Page 1 HP 8920A RF Communications Test Set User’s Guide Firmware Version A.15.00 and above SCREEN CONTROL INSTRUMENT STATE MSSG HELP CONFI HOLD PRINT ADRS SAVE MEAS DUPLE PREV TESTS LOCAL RECAL PRESE USER DATA FUNCTIONS DATA k1’ METER INCR INCR INCR ENTER k2’...
Page 2 Copyright © Hewlett-Packard Company 1995 Notice Information contained in this document is subject to change without notice. All Rights Reserved. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. This material may be reproduced by or for the U.S. Government pursuant to the Copyright License under the clause at DFARS 52.227-7013 (APR 1988).
Page 3 Manufacturer’s Declaration This statement is provided to comply with the requirements of the German Sound Emission Directive, from 18 January 1991. This product has a sound pressure emission (at the operator position) < 70 dB(A). Sound Pressure Lp < 70 dB(A). •...
Page 4 Safety GENERAL Considerations This product and related documentation must be reviewed for familiarization with safety markings and instructions before operation. This product has been designed and tested in accordance with IEC Publication 1010, "Safety Requirements for Electronic Measuring Apparatus," and has been supplied in a safe condition.
Page 5 Safety Considerations for this Instrument WARNING This product is a Safety Class I instrument (provided with a protective earthing ground incorporated in the power cord). The mains plug shall only be inserted in a socket outlet provided with a protective earth contact. Any interruption of the protective conductor inside or outside of the product is likely to make the product dangerous.
Page 6 WARNING: Always use the three-prong ac power cord supplied with this product. Failure to ensure adequate earth grounding by not using this cord may cause product damage. This product is designed for use in Installation Category II and Pollution Degree 2 per IEC 1010 and IEC 664 respectively. For indoor use only. This product has autoranging line voltage input, be sure the supply voltage is within the specified range.
Page 7 3. HP does not warrant that the operation of HP products will be uninterrupted or error free. If HP is unable, within a reasonable time, to repair or replace any product to a condition as warranted, customer will be entitled to a refund of the purchase price upon prompt return of the product.
Page 8 9. TO THE EXTENT ALLOWED BY LOCAL LAW, THE REMEDIES IN THIS WARRANTY STATEMENT ARE CUSTOMER’S SOLE AND EXCLUSIVE REMEDIES. EXCEPT AS INDICATED ABOVE, IN NO EVENT WILL HP OR ITS SUPPLIERS BE LIABLE FOR LOSS OF DATA OR FOR DIRECT, SPECIAL,...
Page 9 24001 E. Mission Avenue declares that the product Liberty Lake, Washington 99019-9599 RF Communications Test Set / Cell Site Test Set Product Name: HP 8920A, HP 8920B, and HP 8921A Model Number: Product Options: This declaration covers all options of the above product.
Page 10 United States of America United States of America United Kingdom U.S. Instrument Support Center Customer Information Center Sales and Service For Test & Measurement Equipment For Assistance On All HP Prod- Hewlett-Packard Ltd. Repair & Calibration. ucts. Cain Road Hewlett-Packard Company Hewlett-Packard Company...
Page 11 Table 1 Regional Sales and Service Offices (Continued) Canada Latin America United Kingdom Service Center Hewlett-Packard Company Sales and Service Hewlett-Packard Ltd. LAHQ Mexico City Hewlett-Packard Ltd. 11120 178 Street Col. Lomas de Virreyes Cain Road Edmonton, Alberta T5S 1P2 11000 Mexico D.F.
Page 12 In this Book The HP 8920A is referred to in this document as "Test Set." Chapter 1, Get Started This chapter describes the basic operation of the Test Set. It also provides a quick check that verifies that the Test Set is operating properly.
Page 13 Contents 1 Get Started Before Connecting a Radio 40 Accessing the Test Set’s Screens 41 Changing A Field’s Setting 43 How do I Verify that the Test Set is Operating Properly? 46 Instrument Functional Diagram 47...
Page 14 Contents 2 Configuring Your Test Set General Operating Information 50...
Page 15 Contents 3 Operating Overview Interaction Between Screens 54 Displaying Measurements 57 Entering and Changing Numbers 63 Printing A Screen 66 Using Measurement Limit Indicators 67 Averaging Measurements 69 Setting A Measurement Reference 70 Using Memory Cards 71 Saving and Recalling Instrument Setups 76 Using USER Keys 80 Setting an RF Generator/Analyzer Offset 84 Using Remote Control 85...
Page 16 Contents 4 Adjacent Channel Power Screen How the Test Set Measures Adjacent Channel Power (ACP) 90 Field Descriptions 91...
Page 17 Contents 5 AF Analyzer Screen Block Diagram 100...
Page 18 Contents 6 Call Processing Subsystem Description of the Call Processing Subsystem 114 Using the Call Processing Subsystem 118 The CALL CONTROL Screen 122 Using the CALL CONTROL Screen to Test Call Processing Functions 140 Using the CALL CONTROL Screen to test AMPS Authentication 151 AUTHENTICATION Screen 162 CALL DATA Screen 165...
Page 19 Contents 7 Configure Screen Field Descriptions 254...
Page 20 Contents 8 Signaling Decoder Screen Field Descriptions for Decoder Modes 270 AMPS-TACS, NAMPS-NTACS Decoder 271 Using the AMPS/TACS, NAMPS/NTACS Decoder 276 Continuous Digital Controlled Squelch System Decoder 280 Using the CDCSS Decoder 284 Digital Paging Decoder 285 Dual-Tone Multi-Frequency (DTMF) Decoder 289 Using the DTMF Decoder 294 EDACS Decoder 295 Using the EDACS Decoder 298...
Page 21 Contents 9 Duplex Test Screen Block Diagram 340 Field Descriptions 341...
Page 22 Contents 10 Signaling Encoder (AF Generator 2) Field Descriptions for Encoder Modes 354 AMPS-TACS NAMPS-NTACS Encoder 355 Using the AMPS-TACS, NAMPS-NTACS Encoder 367 CDCSS Encoder 368 Using the CDCSS Encoder 372 Digital Paging Encoder 373 DTMF Sequence Encoder 378 EDACS Encoder 382 Using the EDACS Encoder 388 Function Generator Encoder 393 LTR Encoder 396...
Page 23 Contents 11 Help Screen Field Descriptions 436...
Page 24 Contents 12 I/O Configure Screen Field Descriptions 438...
Page 25 Contents 13 Message Screen Field Descriptions 444...
Page 26 Contents 14 Oscilloscope Screen Field Descriptions 446 Using the Oscilloscope 452...
Page 27 Contents 15 Print Configure Screen Field Descriptions 454...
Page 28 Contents 16 Radio Interface Screen Radio Interface Functional Description 458 Field Descriptions 460 Using the Radio Interface (Manual Operation) 463 Using The Radio Interface (Remote Operation) 469...
Page 29 Contents 17 RF Analyzer Screen Block Diagram 472 Field Descriptions 473...
Page 30 Contents 18 RF Generator Screen Block Diagram 484 Field Descriptions 485...
Page 31 Contents 19 RX Test Screen Block Diagram 494 Field Descriptions 495...
Page 32 Contents 20 Service Screen Field Descriptions 502...
Page 33 Contents 21 Spectrum Analyzer Screen Field Descriptions 506 Using the Spectrum Analyzer 518...
Page 34 Contents 22 Tests Screen Description of the Tests Subsystem 520 TESTS (Main Menu) 522 TESTS (Channel Information) 525 TESTS (Test Parameters) 527 TESTS (Order of Tests) 528 TESTS (Pass/Fail Limits) 530 TESTS (Save/Delete Procedure) 532 TESTS (Execution Conditions) 535 TESTS (External Devices) 538 TESTS (Printer Setup) 541 TESTS (IBASIC Controller) 544 ROM Programs 546...
Page 35 Contents 23 TX Test Screen Block Diagram 550 Field Descriptions 551...
Page 36 Contents 24 Connector, Key, and Knob Descriptions Connector Descriptions 562 Key Descriptions 580 Knob Descriptions 584...
Page 37 Contents 25 Modifications, Accessories, Manuals, Support Modifications 586 Accessories 589 HP Support for Your Instrument 602...
Page 38 Contents Index 619...
Page 39 Get Started...
Page 40 Chapter 1, Get Started Before Connecting a Radio Before Connecting a Radio The RF IN/OUT port should be used for all transmitter tests when the radio is connected directly to the Test Set. (All UUT transmitter power measurements are made through this port).
Page 41 Chapter 1, Get Started Accessing the Test Set’s Screens Accessing the Test Set’s Screens List of Screens The following table lists all the screens that could be provided by the Test Set. Table 2 Instrument Configuration Analog Measurement Screens Screens Adjacent Channel Power Configure AF Analyzer...
Page 42 Front-panel keys • The front-panel Cursor Control knob (using the To Screen menu, see item 5 in fig- ure 3 on page • HP-IB, using the DISPlay subsystem. Knob Access to Front-Panel Key Screens Access to Screens Knob Access to...
Page 43 Chapter 1, Get Started Changing A Field’s Setting Changing A Field’s Setting There are several types of CRT display fields in the Test Set. This section describes some of the different types of fields. rxscrn.wmf intro4.wmf Figure 3 Different Types of Fields...
Page 44 Chapter 1, Get Started Changing A Field’s Setting Unit-of-Measure Field Unit-of-measure can be changed to display measurements in different values or magnitudes. See item 1 in to see an example of a units-of-measure field. figure 3 To change a unit-of-measure 1.
Page 45 Chapter 1, Get Started Changing A Field’s Setting One-of-Many Field One-of-many fields display a list of choices when selected. See item 3 in figure 3 to see an example of a one-of many field. To make a one-of-many choice 1. Position the cursor at the field. 2.
Page 46 Chapter 1, Get Started How do I Verify that the Test Set is Operating Properly? How do I Verify that the Test Set is Operating Properly? If your Test Set powers-up and displays the RX TEST screen, but you suspect an instrument problem, use the Instrument Quick Check to verify operation of the basic instrument functions.
Page 47 Chapter 1, Get Started Instrument Functional Diagram Instrument Functional Diagram Figure 4 Instrument Functional Diagram (1 of 2)
Page 48 Chapter 1, Get Started Instrument Functional Diagram intr-bd2.wmf Figure 5 Instrument Functional Diagram (2 of 2) S:\HP892XX\USRGUIDE\manual\getstart.fb...
Page 49 Configuring Your Test Set The CONFIGURE and I/O CONFIGURE screens contain a number of settings used to alter instrument operation and hardware communication settings. The HP-IB address, screen intensity, serial communication parameters, and several other settings, are changed in these screens.
Page 50 Chapter 2, Configuring Your Test Set General Operating Information General Operating Information The following configuration information discusses general operating information for some of the fields in these screens. To Set Screen Intensity 1. Access the CONFIGURE screen. 2. Select the Intensity field. 3.
Page 51 Chapter 2, Configuring Your Test Set General Operating Information To Change the Beeper Volume 1. Access the CONFIGURE screen. 2. Select the Beeper field to display the volume choices. 3. Select the desired choice. The beeper alerts you to important operating and measurement conditions. It beeps any time a message is displayed at the top of the screen.
Page 52 Chapter 2, Configuring Your Test Set General Operating Information S:\HP892XX\USRGUIDE\manual\configts.fb...
Page 53 Operating Overview The information in this section discusses some frequently used operating features of the Test Set. From reading you should understand: chapter 1, "Get Started" • What “fields” and “screens” are. • How to use the Cursor Control knob to select different fields and screens.
Page 54 Chapter 3, Operating Overview Interaction Between Screens Interaction Between Screens Most fields operate globally; changing the setting in any screen automatically changes that setting in all screens where it is available. is an AFGen1 Freq example of this field type. Figure 6 Example of How Global Fields Work Priority fields give the RX TEST and TX TEST screens priority control of their...
Page 55 Chapter 3, Operating Overview Interaction Between Screens Table 3 Priority RX TEST and TX TEST Fields Priority Field RX TEST TX TEST Presets to −80 dBm (changeable) RF Gen Amplitude Always Off AFGen1 To Presets to FM (changeable) Always Audio Out AF Anl In Always Audio In Presets to FM Demod (changeable)
Page 56 Chapter 3, Operating Overview Interaction Between Screens fig2-2.wmf Figure 7 Example of How Priority Fields Work S:\HP892XX\USRGUIDE\manual\opoverv.fb...
Page 57 Chapter 3, Operating Overview Displaying Measurements Displaying Measurements scntxrx.wmf Figure 8 Where To Access Measurements...
Page 58 Chapter 3, Operating Overview Displaying Measurements Displaying RF Measurements Transmitter Frequency is displayed when is set to . (Refer to item (1) TX Frequency Tune Mode Auto figure 8 on page 57 Transmitter Frequency Error is displayed when is set to .
Page 59 Chapter 3, Operating Overview Displaying Measurements Displaying AF Measurements FM Deviation, AM Depth, AC Level setting determines the AF Analyzer’s input and the measurement AF Anl In displayed in the top-right corner of the measurement area (see ). These table 4 measurements are available in the TX TEST, DUPLEX TEST, RF GENERATOR, RF ANALYZER, and AF ANALYZER screens.
Page 60 Chapter 3, Operating Overview Displaying Measurements SINAD, Distortion, SNR, AF Frequency, DC Level, DC Current Selecting the currently-displayed measurement causes the menu to be To Screen replaced by a list of measurement choices. Select the new choice to replace the old measurement.
Page 61 Chapter 3, Operating Overview Displaying Measurements To Change the Measurement’s Unit-of-Measure 1. Position the cursor in front of the present unit-of-measurement. 2. Press the key labeled with the desired unit. All measurements allow you to change the associated unit-of- measure. For instance;...
Page 62 Chapter 3, Operating Overview Displaying Measurements To Use the Analog METER Format To display measurement results using the analog meter format, use the following procedure. 1. Position the cursor in front of the unit-of-measure for the measurement you want to dis- play.
Page 63 Chapter 3, Operating Overview Entering and Changing Numbers Entering and Changing Numbers Values for numeric entry fields can be entered and changed using various methods, depending on your testing needs. The unit-of-measure for some of these fields can also be changed (such as changing the RF Generator’s Amplitude µ...
Page 64 Chapter 3, Operating Overview Entering and Changing Numbers Hexadecimal Values Hexadecimal (Hex) values are used for entering some signaling parameters in the ENCODER, such as AMPS data field, and for specifying remote Filler communications parameters, such as the RADIO INTERFACE Output Data field.
Page 65 Chapter 3, Operating Overview Entering and Changing Numbers To Change the Increment or Decrement Setting Using the Pre-Defined Increment/Decrement Keys ×10] ÷10] The INCR and INCR keys change the increment/decrement value by a factor of 10. For example; if the presently changes by 10 MHz for every click of Tune Freq ×10]...
Page 66 Port field to the appropriate type of printer connection. If HP-IB is selected, enter the HP-IB Printer Address of the printer. 3. Select the type of printer you are using in the Model field. If your printer is not listed, configure your printer to emulate one that is listed.
Page 67 Chapter 3, Operating Overview Using Measurement Limit Indicators Using Measurement Limit Indicators The LO LIMIT and HI LIMIT functions are used to define a measurement “window” to alert you to measurements that are outside these limits. When limits are assigned, Lo and/or Hi appear by the measurement. A measurement that goes above or below the defined limits causes three things to happen: 1.
Page 68 Chapter 3, Operating Overview Using Measurement Limit Indicators To Reset or Remove Limits To reset a limit that has been exceeded 1. Position the cursor in front of the measurement’s unit-of-measure. 2. Press and release the SHIFT key, then the down-arrow (or up-arrow key) to access the LO LIMIT (or HI LIMIT) function, then press ENTER or MEAS RESET.
Page 69 For more information on the theory of this filtering technique, refer to the April 1986 issue of the HP Journal, page 24. Example of Using Measurement Averaging This example enables the SINAD measurement to be averaged using 25 samples.
Page 70 Chapter 3, Operating Overview Setting A Measurement Reference Setting A Measurement Reference The REF SET function establishes a measurement reference point. This allows you to make a direct comparison between two measurement results, or between a measurement standard and the actual measurement results. Referenced measurements are displayed in one of two ways, depending on the type of measurement: Displayed value = Measurement −...
Page 71 SRAM memory cards require a battery to maintain stored information. Table 5 Memory Card Part Numbers Memory Type Part Number 32 kilobytes SRAM HP 85700A 128 kilobytes HP 85701A 128 kilobytes SRAM HP 85702A 256 kilobytes HP 85703A 256 kilobytes...
Page 72 Chapter 3, Operating Overview Using Memory Cards Inserting and Removing Memory Cards illustrates how to insert a memory card into the Test Set’s front panel. To Figure 9 remove a memory card, simply pull it out. The Test Set’s memory-card label is marked with an arrow that must be inserted on the same side as the arrow shown on the front-panel slot.
Page 73 Chapter 3, Operating Overview Using Memory Cards Setting the Write-Protect Switch The SRAM memory card’s write-protect switch lets the user secure its contents from being overwritten or erased. The switch has two positions (see figure 10 • Read-write – The memory-card contents can be changed or erased, and new files may written on the card.
Page 74 1 year at 25 C. To retain data, the battery should be replaced annually. SRAM Card Battery Part Numbers - CR2016 or HP 1420-0383 Replacing the Battery Turn the Test Set on and insert the memory card. An inserted memory card takes power from the Test Set, preventing the card’s contents from being lost.
Page 75 Chapter 3, Operating Overview Using Memory Cards WARNING: Do not mutilate, puncture, or dispose of batteries in fire. The batteries can burst or explode, releasing hazardous chemicals. Discard unused batteries according to the manufacturer’s instructions. Memory Card Initialization All new SRAM cards must be initialized before they can be used to store information.
Page 76 Chapter 3, Operating Overview Saving and Recalling Instrument Setups Saving and Recalling Instrument Setups The SAVE and RECALL functions allow you to store different instrument setups and retrieve them later, eliminating the task of re-configuring the Test Set. The number of available save registers depends on how many changes were made to the base instrument setup for each save.
Page 77 Chapter 3, Operating Overview Saving and Recalling Instrument Setups Example of Saving and Recalling an Instrument Setup This example SAVES changes made to the RX TEST screen, and then RECALLS them. The register is saved to wherever the field is set ( Save/Recall internal memory - unless you have changed it).
Page 78 Chapter 3, Operating Overview Saving and Recalling Instrument Setups To Clear All Save Registers 1. Press RECALL. 2. Use the knob to position the cursor in front of the *Clr All* entry in the Recall menu at the bottom-right of the screen. 3.
Page 79 Chapter 3, Operating Overview Saving and Recalling Instrument Setups BASE Settings The BASE register contains any field settings the user has saved that are different from the instrument preset state. It establishes a reference point for all future saves. If a base is not saved, the preset state is used as the reference. When you save an instrument setup, the new setup is compared to the base settings, and any differences are stored under the register name you supply.
Page 80 Chapter 3, Operating Overview Using USER Keys Using USER Keys User keys instantly access instrument settings without using the knob. You can use user keys to move quickly between fields on the same screen, and to access field settings that are not normally available on the screen you are using. Local user keys are used to move between settings on the screen that is displayed.
Page 81 Chapter 3, Operating Overview Using USER Keys To Use the Pre-Assigned Local USER Keys 1. Press and release the SHIFT key, then the k4 key to access the ASSIGN function; then press the ENTER key. The numbers 1 through 5 appear in front of various fields. (See figure 12 2.
Page 82 Chapter 3, Operating Overview Using USER Keys To Assign Local USER Keys 1. Move the cursor to the field you want to assign a local user key to. 2. Press and release the SHIFT key, then the k4 key to access the ASSIGN function. Then press a local USER key (k1-k5).
Page 83 Chapter 3, Operating Overview Using USER Keys To Assign Global USER Keys 1. Move the cursor to the field you want to assign a global user key to. 2. Press and release the SHIFT key, then the k4 key to access the ASSIGN function. Then press SHIFT and a global USER key (k1’...
Page 84 Chapter 3, Operating Overview Setting an RF Generator/Analyzer Offset Setting an RF Generator/Analyzer Offset You can set a fixed frequency offset between the RF Generator and the RF Analyzer. This feature is convenient for testing radios with a fixed transmit/receive frequency offset. To Set an RF Offset 1.
Page 85 HP-IB operation guidelines. Running IBASIC Programs from Memory Cards The documentation shipped with HP 11807 software packages explains how to run those programs from memory cards. Refer to the Programmer’s Guide for detailed information on using memory cards with your own IBASIC programs.
Page 86 Chapter 3, Operating Overview Using Remote Control Using an ASCII Terminal Connecting an ASCII terminal to the serial port allows you to remotely operate the Test Set by entering characters that represent each front-panel control. Before you can use this feature, you must first set the required serial port settings in the I/O CONFIGURE screen, and make any hardware connections.
Page 87 Chapter 3, Operating Overview Using Remote Control Table 6 Equivalent Front-Panel Control Characters Equivalent Equivalent Function Function Character Character CANCEL PERCENT MHZ_V S_KHZ_MV YES_ON_OFF BACKSPACE NO_PPM_W ENTER RELEASE DUPLEX PREV TESTS_MAIN LOCAL RECALL K1_PRIME MEAS_RESET K2_PRIME PRESET K3_PRIME INCR_DIV_10 ASSIGN INCR_SET KNOB_TURN_CCW <...
Page 88 Chapter 3, Operating Overview Using Remote Control Table 6 Equivalent Front-Panel Control Characters (Continued) Equivalent Equivalent Function Function Character Character PLUS_MINUS OHM_PCT_DEL_DBUV DB_GHZ_DBM MS_HZ_UV Alternate sequences for 5 commonly-used functions are also available. Hold down the Cntl (control) key and select the corresponding key for the desired function.
Page 89 Adjacent Channel Power Screen NOTE: This screen is displayed on the Test Set with Option 102, Spectrum Analyzer. This screen is used to measure Adjacent Channel Power. This is a measurement of the power of signals at a specific channel spacing above and below the RF Analyzer’s center frequency.
Page 90 Chapter 4, Adjacent Channel Power Screen How the Test Set Measures Adjacent Channel Power (ACP) How the Test Set Measures Adjacent Channel Power (ACP) When you access this screen, the Test Set automatically starts a multi-step process for measuring ACP: 1.
Page 91 Chapter 4, Adjacent Channel Power Screen Field Descriptions Field Descriptions adchpwr.wmf Figure 13 The Adjacent Channel Power Screen ACP Meas This field selects the format for displaying upper and lower adjacent channel power levels. • Ratio displays the power levels relative to the power around the center frequency (Tune Freq).
Page 92 Chapter 4, Adjacent Channel Power Screen Field Descriptions AFGen1 Freq This field sets the frequency for the first audio frequency sinewave generator. AFGen1 To This field sets two values: • The upper field determines whether the AFGen1 signal modulates the RF Generator or is output through the AUDIO OUT connector.
Page 93 Chapter 4, Adjacent Channel Power Screen Field Descriptions adchpwr1.wmf Figure 14 Relationship Between Tune Freq, Ch Offset, and Channel BW Fields...
Page 94 Chapter 4, Adjacent Channel Power Screen Field Descriptions Ch Offset Use the channel offset field to enter the frequency difference between the Tune setting and the center of the adjacent channels you want to measure. This is Freq an absolute value; only positive values can be entered. See figure 14 Ext TX key This field controls a switch at the MIC/ACC connector.
Page 95 Chapter 4, Adjacent Channel Power Screen Field Descriptions Input Port This field selects the RF IN/OUT or ANT IN port for making RF measurements. The RF IN/OUT port must be used for making TX Power or ACP Level measurements on this screen. Operating Considerations Power levels for each port are printed on the Test Set’s front panel.
Page 96 Chapter 4, Adjacent Channel Power Screen Field Descriptions Res BW The resolution bandwidth field selects the IF filter used when measuring the power of the carrier and the adjacent channels. Operating Considerations Using a narrower bandwidth filter (300 Hz) slows the measurement, but rejects carrier leakage and out of channel spurs.
Page 97 Chapter 4, Adjacent Channel Power Screen Field Descriptions TX Freq Error/TX Frequency This measurement displays Transmitter Frequency Error or absolute Transmitter Frequency. See Also Tune Mode field description (this page) TX Power Transmitter Power measures RF power at the RF IN/OUT port. Operating Considerations Only the RF IN/OUT port can be used for measuring TX Power on this screen.
Page 98 Chapter 4, Adjacent Channel Power Screen Field Descriptions S:\HP892XX\USRGUIDE\manual\acpscrn.fb...
Page 99 AF Analyzer Screen...
Page 100 Chapter 5, AF Analyzer Screen Block Diagram Block Diagram 6AÃ6‡ÃD AHÃ9r€‚q Dƒˆ‡ÃBhv 6AÃ8‡ÃBh‡r Ãqi Avy‡r…Ã Avy‡r…Ã! $ AHÃ9r€‚q A…‚€ÃDAÃAvy‡r…† 6HÃ9r€‚q $xC“ÃGQA $C“ÃCQA TT7Ã9r€‚q A…‚€Ã6V9DPÃPˆ‡ 6ˆqv‚ÃPˆ‡ A…‚€ÃShqv‚ÃD‡r…shpr Shqv‚ÃD‡ 6AÃA…r„Ã8‚ˆ‡ Srh…ÃƒhryÃÃH‚qÃD @‘‡ÃH‚q A…r„ˆrp’ 9v†ƒyh’ A…‚€ÃHD8Ã688 HvpÃH‚q 8‚ˆ‡r… A…‚€Ã6HAH AHÃH‚q H‚qˆyh‡‚…† 6HÃH‚q 6ˆqv‚ÃD A…‚€Ã6V9DPÃDÃCv 9r@€ƒuh†v†...
Page 101 Chapter 5, AF Analyzer Screen Block Diagram Field Descriptions AC Level This measurement displays either rms potential (voltage) or audio power (Watts or dBm). Operating Considerations When the unit-of-measure is changed to measure AF power, the external load resistance must be specified. Refer to the Ext Load R field description, on page 106 The input for the ac level measurement on this screen is always the AUDIO IN connectors.
Page 102 SNR (Signal to Noise Ratio) AF Frequency DC Level Current - DC only(The HP 8920A requires Current Measurement option) Operating Con- siderations This is a priority control field. Accessing the RX TEST or TX TEST screen overrides any changes made to this field in other screens.
Page 103 The current source must be disconnected before zeroing for accurate operation. See Also "DC CURRENT MEASUREMENT" on page 565 "SINAD, Distortion, SNR, AF Frequency, DC Level, DC Current" on page 60 Chapter 24, "Connector, Key, and Knob Descriptions" HP 8920A requires option 103.
Page 104 Chapter 5, AF Analyzer Screen Block Diagram DC Level This field displays the DC voltage entering at the DC input port on the back of the Test Set. De-Emp Gain De-emphasis gain displays and selects the desired AF analyzer de-emphasis amplifier gain.
Page 105 Chapter 5, AF Analyzer Screen Block Diagram Detector This setting selects the type of detector used when measuring and displaying AF signal levels. Detector Types • RMS displays the RMS value of signals. • displays the RMS value of a signal multiplied by •...
Page 106 Chapter 5, AF Analyzer Screen Block Diagram Ext Load R External Load Resistance is used to calculate and display AF power. Power is calculated using the voltage measured at the AUDIO IN connections and the resistance value you enter into this field. Operating Considerations This field is not displayed when the field is set to...
Page 107 Chapter 5, AF Analyzer Screen Block Diagram Gain Cntl AF Analyzer Gain Control specifies whether the AF Analyzer’s gain settings are controlled automatically by AF autoranging ( ), or by manual control ( Auto Hold The following settings are affected by AF autoranging: •...
Page 108 Chapter 5, AF Analyzer Screen Block Diagram Notch Freq This field sets the center frequency for the variable frequency notch filter. It is typically used for distortion and SINAD measurements at frequencies below or above the standard 1 kHz notch filter. This field is not displayed if your Test Set does not have this feature.
Page 109 Chapter 5, AF Analyzer Screen Block Diagram Scope To Oscilloscope To selects the signal source for the Oscilloscope. This allows you to bypass certain sections of the AF analyzer’s circuitry when viewing and measuring a signal. It also allows you to select measurement paths that include additional gain stages, improving the oscilloscope’s resolution when measuring low-level signals.
Page 110 "Interaction Between Screens" on page 54 field is found by selecting the SINAD field on the Test Set display of the AF ANALYZER screen.This field displays the signal to noise ratio of the input audio signal. HP 8920A requires Current Measurement option S:\HP892XX\USRGUIDE\manual\afascrn.fb...
Page 111 Chapter 5, AF Analyzer Screen Block Diagram Speaker ALC Speaker Automatic Level Control enables/disables the ALC function for the instrument’s internal speaker. When is selected, the speaker volume is independent of the signal level being measured. When is selected, the speaker volume is dependent on the signal level being measured.
Page 112 Chapter 5, AF Analyzer Screen Block Diagram TX Power Transmitter Power measures RF power at the RF IN/OUT port. Operating Considerations Maximum signal levels at each port are printed on the front panel. Only the RF IN/OUT port can be used for measuring TX Power on this screen. When the is set to , four dashes (- - - -) appear in place of digits...
Page 113 Call Processing Subsystem...
Page 114 Chapter 6, Call Processing Subsystem Description of the Call Processing Subsystem Description of the Call Processing Subsystem The Call Processing Subsystem, which comprises six call processing screens, allows the Test Set to simulate a cellular base station. The Call Processing Subsystem provides, through host firmware control, the specific signals and protocol messages necessary to automatically establish and maintain a cellular link between the Test Set and a cellular phone (mobile station).
Page 115 Chapter 6, Call Processing Subsystem Description of the Call Processing Subsystem Operational Overview The Test Set simulates a cellular base station by using its hardware and firmware resources to initiate and maintain a link with a mobile station. Unlike a real base station, the Test Set has only one transceiver (its signal generator and RF/AF analyzer) and can support only one mobile station at a time.
Page 116 Chapter 6, Call Processing Subsystem Description of the Call Processing Subsystem State: Idle State: Register Annunciator: None Annunciator: Register Meas: None Meas:RECCW A RECCW B RECCW C Phone Number ESN (hexadecimal) Active Register State: Active Annunciator: Active Meas: None SEND key pressed while Roaming or in Service mode Page...
Page 117 More CALL CNTL Option 004:Tone/Digital Signalling is required in an HP 8920A in order to use the Call Processing Subsystem. Attempting to access the Call Processing Subsystem without Option 004 installed will generate an “Option not installed.” error. Call Processing Subsystem’s Screens The Call Processing Subsystem consists of six screens.
Page 118 Chapter 6, Call Processing Subsystem Using the Call Processing Subsystem Using the Call Processing Subsystem In order to use the Call Processing Subsystem, a mobile station must be powered on, and connected to the Test Set. Connecting A Mobile Station shows a Figure 17, "Connecting a Mobile Station to the Test Set,"...
Page 119 Chapter 6, Call Processing Subsystem Using the Call Processing Subsystem AUDIO OUT AUDIO IN RF IN/OUT ANT IN Speaker Out Microphone In Mobile Station Manufacturer’s Antenna Special Fixture Figure 17 Connecting a Mobile Station to the Test Set NOTE: Do not connect the antenna of the mobile station to the ANT IN port on the front panel of the Test Set;...
Page 120 Chapter 6, Call Processing Subsystem Using the Call Processing Subsystem Mobile Station Audio Out Impedance If the mobile station’s speaker is disconnected when using the manufacturer’s special fixture, the user must ensure that the proper load impedance is applied to the audio output of the mobile station.
Page 121 Chapter 6, Call Processing Subsystem Using the Call Processing Subsystem Generalized Procedures Using the Call Processing Subsystem For general procedures for using the Call Processing Subsystem, see the following sections: • "Conditioning the Test Set for Call Processing" on page 141 •...
Page 122 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen The CALL CONTROL Screen Figure 18 The CALL CONTROL Screen The number of fields displayed on the CALL CONTROL screen depends on the selected system type. S:\HP892XX\USRGUIDE\manual\callscrn.fb...
Page 123 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen The CALL CONTROL screen is the primary Call Processing Subsystem screen. It contains the most often used call processing configuration and command fields. shows the CALL CONTROL screen for NAMPS. Figure 18 on page 122 The top right-hand portion of the CALL CONTROL screen is used to display the following information: •...
Page 124 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen NOTE: The Test Set may still be outputting a modulated RF carrier but the Test Set’s firmware is not active and no communication can occur between a mobile station and the Test Set. AF Freq field is displayed only when the field is set to...
Page 125 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen CC Order The CC Order field is only visible when authentication is activated on the AUTHENTICATION screen. This field is used to send an order on the forward control channel to the mobile station.
Page 126 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen Cntl Channel This field is used to set the control channel number used by the Test Set. field is an immediate action field. That is, whenever the Cntl Channel field is changed, the change is reflected immediately in the Cntl Channel physical configuration of the Test Set (the control channel is immediately de- activated, reconfigured, and then re-activated to reflect the change) and causes an...
Page 127 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen Display This field is used to select the type of mobile station information to be displayed in the upper right-hand portion of the CALL CONTROL screen: • Select Data to display information received from the mobile station on the reverse control channel or reverse voice channel.
Page 128 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen Figure 19 CALL CONTROL Screen with Decoding Error Message Display S:\HP892XX\USRGUIDE\manual\callscrn.fb...
Page 129 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen Figure 20 AMPS CALL CONTROL Screen with Meas Selected...
Page 130 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen Figure 21 NAMPS CALL CONTROL Screen with Meas Selected DSAT: This field is displayed only when the system type is set to NAMPS is divided into two field: DSAT: • The left-hand field displays the DSAT control message identifier being broadcast by the Test Set.
Page 131 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen DSAT/DST (hex) field is displayed only when the field is set to DSAT/DST System Type field is set to NAMPS Display NMeas field displays the received sequence from the mobile DSAT/DST DSAT/DST station on the reverse voice channel.
Page 132 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen NOTE: When the CALL CONTROL screen is displayed, the Test Set’s instrumentation is configured for optimal performance of the signaling decoder. It is recommended that FM deviation measurements be made using either the ANALOG MEAS screen. Using the CALL CONTROL screen to make FM deviation measurements may result in slightly degraded results.
Page 133 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen NOTE: The preset values for the MS Id fields are: • Phone Num = 1111111111 • MIN2 MIN1 = 000000400 An all zero MIN number (000000000), which does not represent a valid phone number, will be converted to the following phone number: 111111?111.
Page 134 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen Order This field is used to send an order on the forward voice channel to the Mobile Station. A mobile station must be actively connected on a voice channel to the Test Set (that is, the annunciator must be lit) before you can send an Connect...
Page 135 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen [] Page When lit, the annunciator indicates that the mobile station connected to the Page Test Set is currently being paged on the forward control channel. Phone Num: This field displays the decoded MIN number received from the mobile station on the reverse control channel in response to a forward control channel message.
Page 136 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen SAT: is divided into two fields: SAT: he left-hand field displays the SAT frequency assigned to the voice channel being used by the Test Set and the mobile station. A numeric value would only be displayed when the Test Set’s Connected annunciator is lit (connected state).
Page 137 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen TX Freq Error This field displays the frequency error (frequency error = assigned carrier frequency - measured carrier frequency) of the RF carrier being transmitted by the mobile station. Four dashes (----) indicate that no RF carrier is present to measure. A numeric value would only be displayed in the connected state (that is, the annunciator is lit).
Page 138 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen TX Power field is displayed only when the field is set to TX Power Display Meas This field displays the measured RF power of the RF carrier being transmitted by the mobile station. A non-zero value would only be displayed when the Test Set’s annunciator is lit).
Page 139 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen VC Order This field is used to send an order on the forward voice channel to the Mobile Station with authentication active. The field is only visible when VC Order authentication is activated and the mobile is assigned a voice channel. The orders available are: •...
Page 140 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to Test Call Processing Functions Using the CALL CONTROL Screen to Test Call Processing Functions The CALL CONTROL screen provides multiple functions for testing a mobile station. The following sections describe how to: •...
Page 141 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to Test Call Processing Functions Conditioning the Test Set for Call Processing Perform the following steps when first entering the Call Processing Subsystem (that is, the first time the CALL CONTROL screen is selected during a measurement session).
Page 142 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to Test Call Processing Functions 2. Couple the variable-frequency notch filter to AFGen1. This step is only required if audio testing is to be done on the mobile station. This step couples the variable-frequency notch filter to the output frequency of AFGen1 (audio frequency generator1).
Page 143 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to Test Call Processing Functions Pwr Lvl: (right-hand field) - Enter the Voice Mobile Attenuation Code (VMAC). The VMAC determines the mobile station power level to be used on the voice channel (See Chan: field description, on page 125 for more information about voice channel).
Page 144 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to Test Call Processing Functions Register a Mobile Station Ensure that the Test Set is in the active state. See "Turn On The Test Set’s Control Channel" on page 143 for information on how to activate the Test Set.
Page 145 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to Test Call Processing Functions Page a Mobile Station There are two methods that can be used to page a mobile station: • Page a mobile station that has registered with the Test Set. •...
Page 146 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to Test Call Processing Functions Paging a Mobile Station That Has Not Registered with the Test Set 1. Ensure that the Test Set is in the active state. See "Turn On The Test Set’s Control Channel"...
Page 147 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to Test Call Processing Functions Handoff a Mobile Station to a New Voice Channel 1. Ensure that the Test Set is in the connect state. See "Page a Mobile Station" on page for information on how to bring a mobile station up on a voice channel.
Page 148 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to Test Call Processing Functions Change the Transmit Power Level of a Mobile Station Ensure that the Test Set is in the connected state. See "Page a Mobile Station" on page for information on how to bring a mobile station up on a voice channel.
Page 149 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to Test Call Processing Functions Originate a Call from a Mobile Station Ensure that the Test Set is in the active state. See "Turn On The Test Set’s Control Channel" on page 143 for information on how to activate the Test Set.
Page 150 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to Test Call Processing Functions Send an Alert Order to a Mobile Station Ensure that the Test Set is in the connected state. See "Page a Mobile Station" on page for information on how to bring a mobile station up on a voice channel.
Page 151 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to test AMPS Authentication Using the CALL CONTROL Screen to test AMPS Authentication The process of testing AMPS authentication (IS-54) through the Call Processing Subsystem requires the user to synchronize the base station and mobile station. This synchronization requires that the base station and the mobile station possess two pieces of shared secret data (SSD) to confirm a valid call.
Page 152 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to test AMPS Authentication Condition the Test Set for Call Processing Perform the following steps when first entering the Call Processing Subsystem (that is, the first time the CALL CONTROL screen is selected during a measurement session).
Page 153 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to test AMPS Authentication Configure the Test Set 1. Select CALL CNTL from the To Screen menu. The CALL CONTROL screen will be displayed. 2. Verify that the Test Set configuration information is appropriate for the mobile station to be tested.
Page 154 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to test AMPS Authentication Turn on the Test Set’s Control Channel 1. If not already done, condition the Test Set. See "Condition the Test Set for Call Pro- cessing" on page 152 for further information.
Page 155 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to test AMPS Authentication 11. Select SSD Upd in the CC Order field. The Access annunciator light will light while the SSD Update order is in progress. If the mobile station responds properly on the reverse control-channel, “SSD Update Order Successful”...
Page 156 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to test AMPS Authentication Page a Mobile Station with Authentication Paging A Mobile Station That Has Registered With The Test Set 1. Ensure that the Test Set is in the active state. See "Turn on the Test Set’s Control Channel"...
Page 157 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to test AMPS Authentication Originate a Call with Authentication 1. Ensure that the Test Set is in the active state. See "Turn On The Test Set’s Control Channel" on page 143 for information on how to activate the Test Set.
Page 158 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to test AMPS Authentication Perform an SSD Update There are two methods that can be used to perform an SSD Update: • SSD Update on the Control Channel • SSD Update on the Voice Channel Performing an SSD Update on the Control Channel 1.
Page 159 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to test AMPS Authentication Performing an SSD Update on the Voice Channel 1. Ensure that the Test Set is in the active state. See "Turn on the Test Set’s Control Channel"...
Page 160 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to test AMPS Authentication Perform a Unique Challenge There are two methods that can be used to perform a Unique Challenge-Response procedure: • Unique Challenge on the Control Channel • Unique Challenge on the Voice Channel Performing a Unique Challenge on the Control Channel 1.
Page 161 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to test AMPS Authentication Performing a Unique Challenge on the Voice Channel 1. Ensure that the Test Set is in the active state. See "Turn on the Test Set’s Control Channel"...
Page 162 Chapter 6, Call Processing Subsystem AUTHENTICATION Screen AUTHENTICATION Screen Figure 22 The AUTHENTICATION Screen The AUTHENTICATION screen allows you to enter parameters for authentication into the Test Set. These parameters are used by the Cave algorithm during Call Processing functions such as registration, page, and originate to verify a valid call.
Page 163 Chapter 6, Call Processing Subsystem AUTHENTICATION Screen A_Key The A_key is a 26-digit decimal number stored in the mobile station’s permanent security and identification memory and is not accessible to the user. The user must obtain a valid from the mobile station’s manufacturer or from the HLR/AC A_Key to test Authentication procedures, otherwise the authentication process will fail.
Page 164 Chapter 6, Call Processing Subsystem AUTHENTICATION Screen RANDSSD_1 RANDSSD_1 is the 24 most significant bits of the random number issued by the base station in the SSD Update Order. RANDSSD_1 is entered as a 6-digit hexadecimal value. RANDSSD_1 is user definable. RANDSSD_2 RANDSSD_2 is the 24 subsequent bits (following RANDSSD_1) of the random number issued by the base station in the SSD Update Order.
Page 165 Chapter 6, Call Processing Subsystem CALL DATA Screen CALL DATA Screen Figure 23 The CALL DATA Screen This screen displays the decoded reverse control channel and reverse voice channel signaling messages received by the Test Set from the mobile station. Thirteen different decoded messages can be viewed on this screen.
Page 166 Chapter 6, Call Processing Subsystem CALL DATA Screen RVCOrdCon - Reverse Voice Channel Order Confirmation Message • Reverse Control Channel Authentication Messages. BSChalOrd - Word C - Base Station Challenge Word AuthWORD - Word C - Authentication Word UniqChCon - Word C - Unique Challenge Order Confirmation Word •...
Page 167 Chapter 6, Call Processing Subsystem CALL DATA Screen Active This field is used to turn on the forward control channel of the Test Set or to force a return to the active state from any other state (register, page, access, connect). If the forward control channel of the Test Set is already active, selecting this field will deactivate and then reactivate the control channel.
Page 168 Chapter 6, Call Processing Subsystem CALL DATA Screen Handoff This field is used to initiate a handoff from the current voice channel assignments to a new set of voice channel assignments. The voice channel number to hand the mobile station off to, the channel location (NAMPS system type only), the initial power level to use on the new voice channel, the DSAT sequence (NAMPS system type only) to transpond on the mobile station, and the SAT tone frequency to transpond on the new voice channel are specified using the...
Page 169 Chapter 6, Call Processing Subsystem CALL DATA Screen Page This field is used to initiate a page to the mobile station connected to the Test Set. The Test Set must be in the active state (that is, the annunciator must be Active lit) and the information field on the CALL CONTROL screen must be...
Page 170 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions CALL DATA Screen Message Field Descriptions This section describes the individual data fields contained in each of the decoded reverse control channel and reverse voice channel messages. RECCW A Message Fields Figure 24 RECCW A Message Fields This field displays the first word indication received from the mobile station.
Page 171 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions This field displays whether the serial number word is received from the mobile station. • Set to ‘1’ if the serial number word is sent. • Set to ‘0’ if the serial number word is not sent. This field displays the extended address word received from the mobile.
Page 172 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions RECCW B Message Fields Figure 25 RECCW B Message Fields This field displays the first word indication received from the mobile station. • A ‘1’ indicates that this is the first word. •...
Page 173 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions This field displays the last-try code field. RSVD Reserved for future use. MIN2 This field displays the second part of the mobile identification number received by the Test Set. Parity This field displays the parity of the received data.
Page 174 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions RECCW C Message Fields Figure 26 RECCW C Message Fields This field displays the first word indication received from the mobile station. • A ‘1’ indicates that this is the first word. •...
Page 175 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions RECCW D Message Fields Figure 27 RECCW D Message Fields This field displays the first word indication received from the mobile station. • A ‘1’ indicates that this is the first word. •...
Page 176 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions RECCW E Message Fields Figure 28 RECCW E Message Fields This field displays the first word indication received from the mobile station. • A ‘1’ indicates that this is the first word. •...
Page 177 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions RVCOrdCon Message Fields Figure 29 RVCOrdCon Message Fields This field displays the first word indication received from the mobile station. • A ‘1’ indicates that this is the first word. •...
Page 178 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions ORDQ This field displays the received order qualifier. The field qualifies the order confirmation to a specific action. Order This field displays the field and identifies the order type received by the Order Test Set.
Page 179 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions RANDBS This field displays the random number used in the SSD update procedure. Parity This field displays the parity of the received data. AuthWORD Message Fields Figure 31 AuthWORD Message Fields This field displays the first word indication received from the mobile station.
Page 180 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions AUTHR Output of the authentication algorithm when responding to a Unique Challenge Order. Parity This field displays the parity of the received data. UniqChCon Message Fields Figure 32 UniqChCon Message Fields This field displays the first word indication received from the mobile station.
Page 181 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions Parity This field displays the parity of the received data. RVCOrd Message Fields Figure 33 RVCOrd Message Fields RVCOrd is a generic order word. It is utilized to receive an order associated with the specific mobile station under test.
Page 182 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions Local This field displays the local control field. This field is specific to each system. The field must be set to local control for this field to be interpreted by the Test ORDER Set.
Page 183 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions This field displays the first word indication received from the mobile station. • A ‘1’ indicates that this is the first word. • A ‘0’ is displayed for all subsequent words. NAWC This field displays the number of additional words coming from the mobile.
Page 184 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions T1T2 This field identifies the received message as an order confirmation, an order, or a called address message. This field indicates the number of additional words coming. Local This field displays the local control field. This field is specific to each system. The field must be set to local control for this field to be interpreted by the Test ORDER Set.
Page 185 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions The Odd/Even data field is used for adjacent channel protection. RSVD Reserved for future use. Parity This field displays the parity of the received data.
Page 186 Chapter 6, Call Processing Subsystem Using the CALL DATA Screen Using the CALL DATA Screen To View the Decoded Reverse Channel Words from a Mobile Station Registration 1. If not already done, condition the Test Set. See "Conditioning the Test Set for Call Processing"...
Page 187 Chapter 6, Call Processing Subsystem Using the CALL DATA Screen To View the Decoded Reverse Channel Words from a Mobile Station Page There are two methods that can be used to view the decoded RVCC words from a mobile station page: •...
Page 188 Chapter 6, Call Processing Subsystem Using the CALL DATA Screen Step 8. and Step 10. in the above procedure can be reversed, that is, the desired word can be selected first, then the mobile station can be paged. If the page is successful, the contents of each display word contained in the reverse control channel’s message stream will be updated when the decoding is complete.
Page 189 Chapter 6, Call Processing Subsystem Using the CALL DATA Screen NOTE: If a word is chosen which was not part of the decoded reverse channel’s message stream, all the fields will be blank when it is displayed. See "CALL DATA Screen Message Field Descriptions" on page 170 for a description of each of the available reverse channel words.
Page 190 Chapter 6, Call Processing Subsystem Using the CALL DATA Screen 11. Select the Handoff field. The Access annunciator will light while the Test Set signals the mobile station with the handoff information. If the mobile responds properly, it will stop transmitting on the current voice channel, switch to the new voice channel assignment, and transpond the new SAT frequency assignment.
Page 191 Chapter 6, Call Processing Subsystem Using the CALL DATA Screen To View the Decoded Reverse Channel Words from a Mobile Station Release 1. If not already done, condition the Test Set. See "Conditioning the Test Set for Call Processing" on page 141 for further information.
Page 192 Chapter 6, Call Processing Subsystem Using the CALL DATA Screen To View the Decoded Reverse Channel Words from an Order to Change the Transmit Power Level of a Mobile Station 1. If not already done, condition the Test Set. See "Conditioning the Test Set for Call Processing"...
Page 193 Chapter 6, Call Processing Subsystem Using the CALL DATA Screen To View The Reverse Channel Words From a Mobile Station Origination 1. If not already done, condition the Test Set. See "Conditioning the Test Set for Call Processing" on page 141 for further information.
Page 194 Chapter 6, Call Processing Subsystem CALL BIT Screen CALL BIT Screen Figure 36 The CALL BIT Screen The CALL BIT screen is designed to give an advanced user the capability to modify the contents of the forward control channel and forward voice channel signaling messages that are used in all processing messaging protocol.
Page 195 Chapter 6, Call Processing Subsystem CALL BIT Screen The CALL BIT screen should not be used to change any parameter that can be set on any other Call Processing Subsystem screen. The contents of the applicable fields on the CALL CONTROL screen and the CALL CONFIGURE screen are not updated to reflect any changes made while using the CALL BIT screen.
Page 196 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Contents that can be Modified Using the CALL BIT screen The contents of twenty nine different messages can be modified from this screen. The message to be modified is selected using the field.
Page 197 Chapter 6, Call Processing Subsystem CALL BIT Screen • NAMPS Forward Voice Channel Messages. • EXT PROT - Extended Protocol mobile station control message • NCH ASN - Extended Protocol Narrow Channel Assignment Message • NMS FVC - Narrow Channel mobile station control message •...
Page 198 Chapter 6, Call Processing Subsystem CALL BIT Screen Data Spec This field is used to determine how the contents of the signaling messages are built. • Std -Use the signaling formats defined in the applicable industry standard to build the forward control channel and forward voice channel signaling messages.
Page 199 Chapter 6, Call Processing Subsystem CALL BIT Screen Order This field is used to send an order type mobile station control message on the forward voice channel to the mobile station. The orders available are: • Change Power to Power Level 0 - 7 •...
Page 200 Chapter 6, Call Processing Subsystem CALL BIT Screen [] Register When lit, the annunciator indicates that the mobile station connected Register to the Test Set is being commanded to register with the base station. Release This field is used to terminate an active voice channel connection to the mobile station.
Page 201 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions CALL BIT Screen Message Field Descriptions This section describes the individual data fields contained in each of the forward control channel and forward voice channel messages. SPC WORD1 Message Fields Figure 37 SPC WORD1 Message Fields T1T2...
Page 202 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions NAWC This field displays the number of additional words coming. This field displays the overhead message type. • A ‘100’ indicates a global action message. • A ‘110’ indicates that this is the first word of the system overhead parameter message. •...
Page 203 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions This field displays whether the serial number word is sent to the mobile station. • Set to ‘1’ if the serial number word is sent. • Set to ‘0’ if the serial number word is not sent. This field displays the extended address word sent to the mobile.
Page 204 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions End indication field. • Set to 1 to indicate the last word of the overhead message train. • Set to 0 if not the last word. This field displays the overhead message type. •...
Page 205 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions Global Action Field. Busy-Idle status field.
Page 206 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions RSVD Reserved for future use, all bits must be set as indicated. End indication field. • Set to 1 to indicate the last word of the overhead message train. •...
Page 207 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions Digital color code field. Global Action Field. REGINCR Registration increment field. RSVD Reserved for future use, all bits must be set as indicated.
Page 208 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions End indication field. • Set to 1 to indicate the last word of the overhead message train. • Set to 0 if not the last word. This field displays the overhead message type. •...
Page 209 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions REGID Registration ID field. End indication field. • Set to 1 to indicate the last word of the overhead message train. • Set to 0 if not the last word.
Page 210 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions This field displays the overhead message type. • A ‘100’ indicates a global action message. • A ‘110’ indicates this is the first word of the system parameter overhead parameter message.
Page 211 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions CMAC Control mobile attenuation field. Indicates the mobile station power level associated with reverse control channel. RSVD1 Reserved for future use, all bits must be set as indicated. Control filler message field 2. All bits must be set as indicated. RSVD2 Reserved for future use, all bits must be set as indicated.
Page 212 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions MS WORD1 Message Fields Figure 43 MS WORD1 Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message. Digital color code field. MIN1 First part of the mobile identification number field.
Page 213 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions MSMessOrd Message Fields Figure 44 MSMessOrd Message Fields Send Word The Send Word field sends the currently defined bits displayed in the MSMessOrd field to the mobile station. T1T2 This field identifies the received message as an order confirmation, an order, or a called address message.
Page 214 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions LOCAL This field is specific to each system. The field must be set to local control ORDER for this field to be interpreted. ORDQ The order qualifier field qualifies the order confirmation to a specific action. ORDER This field identifies the order type.
Page 215 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions MIN2 Second part of the mobile identification number field. VMAC This field displays the voice mobile attenuation code. It shows the mobile station’s power level associated with the designated voice channel. CHAN Channel number field.
Page 216 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions PSCC Present SAT color code. Indicates the SAT color code associated with the present channel. RSVD Reserved for future use, all bits must be set as indicated. LOCAL Local control field. This field is specific to each system. The ORDER field must be set to local control for this field to be interpreted.
Page 217 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions ORDQ Order qualifier field. Qualifies the order to a specific action. ORDER Order field. Identifies the order type. Parity Parity field. The contents of the Parity field cannot be set by the user. The Test Set calculates the parity bits.
Page 218 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions RSVD Reserved for future use, all bits must be set as indicated. VMAC This field displays the voice mobile attenuation code. It shows the mobile station power level associated with the designated voice channel. S:\HP892XX\USRGUIDE\manual\callscrn.fb...
Page 219 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions CHAN Channel number field. Indicates the designated voice channel. Parity Parity field. The contents of the Parity field cannot be set by the user. The Test Set calculates the parity bits. RandChalA Message Fields Figure 48 RandChalA Message Fields...
Page 220 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions End indication field. Set to ‘1’ to indicate the last word of the overhead message train; set to ‘0’ if not last word. Overhead message type field. Set to ‘100’ indicating the global action message. Parity Parity field.
Page 221 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions RANDB The 16 least significant bits of the 32 bit RAND variable stored by a mobile for use in the authentication process. End indication field. • Set to 1 to indicate the last word of the overhead message train. •...
Page 222 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions SAT color code for new channel. RAND_SSD1 The most significant 24-bits of the random number issued by the base station in the SSD Update Order. Parity Parity field. The contents of the Parity field cannot be set by the user. The Test Set calculates the parity bits.
Page 223 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions Parity Parity field. The contents of the Parity field cannot be set by the user. The Test Set calculates the parity bits. RAND SSD3 Message Fields Figure 52 RAND SSD3 Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message.
Page 224 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions Parity Parity field. The contents of the Parity field cannot be set by the user. The Test Set calculates the parity bits. BSChalCon Message Fields Figure 53 BSChalCon Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message.
Page 225 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions Parity Parity field. The contents of the Parity field cannot be set by the user. The Test Set calculates the parity bits. UniqChOrd Message Fields Figure 54 UniqChOrd Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message.
Page 226 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions FVC SSD1 Message Fields Figure 55 FVC SSD1 Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message. RANDSSD_1 The most significant 24-bits of the random number issued by the base station in the SSD Update Order.
Page 227 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions FVC SSD2 Message Fields Figure 56 FVC SSD2 Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message. RANDSSD_2 The subsequent 24-bits (following RANSSSD_1) of the random number issued by the base station in the SSD Update Order.
Page 228 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions FVC SSD3 Message Fields Figure 57 FVC SSD3 Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message. RANDSSD_3 The least significant 8-bits of the random number issued by the base station in the SSD Update Order.
Page 229 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions FVCBSCon Message Fields Figure 58 FVCBSCon Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message. RSVD1 Reserved for future use. AUTHBS Output response of the authentication algorithm initiated by the Base Station Challenge order.
Page 230 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions FVCUniqCh Message Fields Figure 59 FVCUniqCh Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message. RSVD Reserved for future use. RANDU The 24 bit random number issued by the base station in the Unique Challenge Order.
Page 231 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions EXT PROT Message Fields Figure 60 EXT PROT Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message. SAT color code for new channel. MIN2 Second part of the mobile identification number.
Page 232 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions Message Type. Extended Protocol Message Type. Parity Parity field. The contents of the Parity field cannot be set by the user. The Test Set calculates the parity bits. NCH ASN Message Fields Figure 61 NCH ASN Message Fields T1T2...
Page 233 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions Channel number bit 12 set - 10 kHz below channel number in CHAN Field. VMAC This field displays the voice mobile attenuation code. It shows the mobile station power level associated with the designated voice channel. CHAN Channel number field.
Page 234 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions PDSCC Present DSAT color code. Indicates the DAST color code associated with the present channel. Extended protocol order used for multiple word features. RSVD Reserved for future use. The Odd/Even data field is used for adjacent channel protection. LOCAL This field is specific to each system.
Page 235 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions WNHO MESS Message Fields Figure 63 WNHO MESS Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message. SAT color code for new channel. PSCC Present SAT color code.
Page 236 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions Channel number bit 13 set - 10 kHz above channel number in CHAN Field. Channel number bit 12 set - 10 kHz below channel number in CHAN Field. VMAC This field displays the voice mobile attenuation code.
Page 237 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions DSCC DSAT color code for the new channel. Also represents SCC for handoff to a wide analog channel. PDSCC Present DSAT color code. Indicates the DAST color code associated with the present channel.
Page 238 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions Parity Parity field. The contents of the Parity field cannot be set by the user. The Test Set calculates the parity bits. S:\HP892XX\USRGUIDE\manual\callscrn.fb...
Page 239 Chapter 6, Call Processing Subsystem Using the CALL BIT Screen Using the CALL BIT Screen Selecting The Message Content Generation Method The contents (i.e. bit patterns) of the signaling messages sent to the mobile station on the forward control channel and the forward voice channel are generated using one of two methods.
Page 240 Chapter 6, Call Processing Subsystem Using the CALL BIT Screen System Operation When Data Spec Field Set to Std When the field is set to the Test Set builds the signaling Data Spec messages by first examining the fields which contain the information needed to build the messages (i.e.
Page 241 Chapter 6, Call Processing Subsystem Using the CALL BIT Screen System Operation When Data Spec Field Set to Bits When the field is set to , the Test Set builds the signaling Data Spec Bits messages using only the bit patterns set on the CALL BIT screen whenever a call processing function is executed which uses any of the available messages.
Page 242 Chapter 6, Call Processing Subsystem Using the CALL BIT Screen Changing the Content of a Message Field Perform the following steps to change the contents of a message field: 1. Position the cursor on the Data Spec field and select Bits. 2.
Page 243 Chapter 6, Call Processing Subsystem Using the CALL BIT Screen Typical Example The following example illustrates the use of the CALL BIT screen. In this example an AMPS mobile station is brought up on a voice channel and then handed off to a new voice channel assignment. The contents of the FVC V Msg message, which was set when the first handoff occurred, is then modified from the CALL BIT screen.
Page 244 Chapter 6, Call Processing Subsystem ANALOG MEAS Screen ANALOG MEAS Screen Figure 65 The ANALOG MEAS Screen This screen is used to make RF and audio measurements on the mobile station connected to the Test Set while on an active voice channel. The Test Set does not monitor the mobile station’s transmitted carrier power while the ANALOG MEAS screen is displayed.
Page 245 Chapter 6, Call Processing Subsystem ANALOG MEAS Screen AF Freq This field is a one-of-many field used to select the type of measurement to be made by the Audio Frequency Analyzer on the audio signal being measured. Refer to the for descriptions of the SINAD field description, on page 110 measurements available.
Page 246 Chapter 6, Call Processing Subsystem ANALOG MEAS Screen Detector This field is used to select the type of detector used to measure the amplitude of the audio signal being measured. Refer to the Detector field description, on page for descriptions of the detectors available. Filter 1 This field selects one of several standard or optional audio frequency filters which can be used to condition the audio signal before being analyzed by the Audio...
Page 247 ANALOG MEAS screen. The following examples illustrate how to make a typical mobile station receiver measurement (RF Sensitivity) and a typical mobile station transmitter measurement (FM Hum and Noise). Refer to the HP 8920A RF Communications Test Set Applications Handbook, section “Testing FM Radios”...
Page 248 Chapter 6, Call Processing Subsystem Using the ANALOG MEAS Screen To Make an RF Sensitivity Measurement 1. If not already done, condition the Test Set. See "Conditioning the Test Set for Call Processing" on page 141 for further information. 2. If not already done, configure the Test Set. See "Configure the Test Set"...
Page 249 Chapter 6, Call Processing Subsystem Using the ANALOG MEAS Screen To Make an FM Hum and Noise Measurement 1. If not already done, condition the Test Set. See "Conditioning the Test Set for Call Processing" on page 141 for further information. 2.
Page 250 Chapter 6, Call Processing Subsystem CALL CONFIGURE Screen CALL CONFIGURE Screen Figure 66 The CALL CONFIGURE Screen The number of fields displayed on the CALL CONFIGURE screen depends on the selected system type. This screen is used to set some of the less commonly used Test Set configuration parameters.
Page 251 Chapter 6, Call Processing Subsystem CALL CONFIGURE Screen NOTE: In order to ensure that the Test Set makes the correct decisions regarding the presence of the mobile stations’s RF carrier, the Test Set’s RF power meter should be zeroed before using the Call Processing Subsystem.
Page 252 Chapter 6, Call Processing Subsystem CALL CONFIGURE Screen S:\HP892XX\USRGUIDE\manual\callscrn.fb...
Page 253 Configure Screen The CONFIGURE screen defines a number of general operating functions, such as date and time, screen intensity, and beeper volume. It is also used to define some RF signal parameters, such as RF Generator/Analyzer offset, channel standards and characteristics, and signal loss/gain compensation.
Page 254 Chapter 7, Configure Screen Field Descriptions Field Descriptions cnfgscrn.wmf Figure 67 The Configure Screen More cnfg-new.wmf Figure 68 The Configure Screen S:\HP892XX\USRGUIDE\manual\confscrn.fb...
Page 255 Chapter 7, Configure Screen Field Descriptions Antenna In This field is used to indicate losses or gains between the ANT IN port and the device-under-test. Enter a positive value to indicate a gain (such as an amplifier). The Spectrum Analyzer’s marker level ( ) measurement is automatically reduced by that amount.
Page 256 Chapter 7, Configure Screen Field Descriptions See Also Chan Space (User Defined) field description, on page 257 (Gen)-(Anl) field description, on page 259 RF Chan Std field description, on page 262 RF Display field description, on page 263 S:\HP892XX\USRGUIDE\manual\confscrn.fb...
Page 257 Chapter 7, Configure Screen Field Descriptions Beeper This field changes the audio beeper volume by selecting the desired level from a list of choices. The beeper always beeps when the instrument is turned on, regardless of this setting. Operating Considerations The beeper alerts you any time a message is displayed.
Page 258 Date This field specifies the current date for the internal clock. The date can be read by a controller using HP-IB and printed on test results. The format is MMDDYY (Month Day Year), using two digits for each term. When entering months January through September (01-09), the leading zero is not displayed when entered.
Page 259 Chapter 7, Configure Screen Field Descriptions (Gen)-(Anl) This field is used with the field to specify the amount of frequency RF Offset offset between the RF Generator and RF Analyzer. This field is not displayed when the field is set to (the offset is RF Display Chan...
Page 260 These fields enable/disable several autoranging and autotuning routines. enables these routines, providing automatic adjustment when making Auto All AF or RF measurements. disables these routines, requiring you to manually set the affected Hold All settings. Optional for the HP 8920A. S:\HP892XX\USRGUIDE\manual\confscrn.fb...
Page 261 Chapter 7, Configure Screen Field Descriptions The following fields are affected by the field: Range Hold • RX/TX Cntl in the CONFIGURE screen. • Tune Mode in the TX TEST, DUPLEX TEST, and RF ANALYZER screens. • Input Atten in the RF ANALYZER and SPECTRUM ANALYZER screens. •...
Page 262 Chapter 7, Configure Screen Field Descriptions RF Chan Std Use the RF channel standard field to select the channel standard for the radio- under-test. The RF Generator’s and the RF Analyzer’s frequencies are automatically set to correspond to the channel number entered in the RF Channel field.
Page 263 Chapter 7, Configure Screen Field Descriptions RF Display This field selects the format for entering the RF Generator’s and RF Analyzer’s frequencies: • When Freq is selected, you enter the RF Generator’s and the RF Analyzer’s frequencies directly using the keypad or knob. •...
Page 264 Chapter 7, Configure Screen Field Descriptions RF Gen Volts This field specifies whether you want RF voltages expressed as the voltage across a 50 ohm load, or the open circuit voltage (emf). Operating Considerations This setting affects the RF Generator’s and the Tracking Generator’s amplitudes. RF In/Out This field is used to indicate losses or gains between the RF IN/OUT port and the device-under-test.
Page 265 Chapter 7, Configure Screen Field Descriptions RF Level Offset This field enables/disables the RF level offsets entered in the RF In/Out , and fields below it. Duplex Out Antenna In • When set to On, the RF Generator’s amplitude and RF Analyzer’s power measurement are offset by the values entered in these fields.
Page 266 Chapter 7, Configure Screen Field Descriptions RX/TX Cntl This function controls automatic screen changes between the RX TEST and TX TEST screens during radio testing. It is divided into two fields: field enables/disables automatic switching between the RX Auto/Manual TEST and TX TEST screens under certain testing conditions. •...
Page 267 Chapter 7, Configure Screen Field Descriptions Serial No. This field displays the serial number of the Test Set. Time This field sets the time-of-day for the instrument’s 24 hour clock. (Example, 4:53 PM is entered 16:53 Operating Considerations The internal clock still functions when the instrument is turned off. Total RAM This field displays the total amount of RAM available for IBASIC programs and save/recall registers.
Page 268 Chapter 7, Configure Screen Field Descriptions S:\HP892XX\USRGUIDE\manual\confscrn.fb...
Page 269 Signaling Decoder Screen...
Page 270 Chapter 8, Signaling Decoder Screen Field Descriptions for Decoder Modes Field Descriptions for Decoder Modes The Signaling Decoder analyzes different data-encoded signaling formats. The format is selected in the field in any of the decoder’s screens. Mode A list of standards for each format is displayed by selecting the field in Standard any screen.
Page 271 Chapter 8, Signaling Decoder Screen AMPS-TACS, NAMPS-NTACS Decoder AMPS-TACS, NAMPS-NTACS Decoder The AMPS-TACS, NAMPS-NTACS decoder acts like a base station receiver by analyzing Reverse Control Channel (RECC) and Reverse Voice Channel (RVC) message streams for various cellular telephone formats. The decoder can also be used to analyze Forward Control Channel (FOCC) and Forward Voice Channel (FVC) data from the base station.
Page 272 Chapter 8, Signaling Decoder Screen AMPS-TACS, NAMPS-NTACS Decoder nmps-de1.wmf Figure 70 The NAMPS-NTACS Voice Channel Decoder AF Anl In Audio frequency analyzer input selects the source of the signal to be analyzed. Operating Considerations This is a priority control field. Accessing the RX TEST or TX TEST screen overrides any changes made to this field in this screen.
Page 273 Chapter 8, Signaling Decoder Screen AMPS-TACS, NAMPS-NTACS Decoder Data (hex) (AMPS-TACS) This display field lists the decoded data serially as it is received. This field is labeled for the NAMPS/NTACS mode, but performs the RECC Data (hex) identical function. Gate Time This field specifies how long the decoder analyzes a signal after it has been triggered.
Page 274 Chapter 8, Signaling Decoder Screen AMPS-TACS, NAMPS-NTACS Decoder Measure (NAMPS-NTACS: RVC) This field selects the type of decoded data to display: DSAT or DST codes, Message data, or DTMF (Dual-Tone Multi-Frequency) tone data. Num of Bits This field lists the total number of bits displayed. This number is dependent on Data Rate of the signal being decoded, the of the decoder, and the Gate Time...
Page 275 Chapter 8, Signaling Decoder Screen AMPS-TACS, NAMPS-NTACS Decoder Single/Cont This field specifies how long you want the analyzer to decode incoming signals: • Single tells the analyzer to display the information received during one Gate Time (or after one measurement for NAMPS-NTACS RVC data). •...
Page 276 Chapter 8, Signaling Decoder Screen Using the AMPS/TACS, NAMPS/NTACS Decoder Using the AMPS/TACS, NAMPS/NTACS Decoder Interaction With the Encoder The encoder screen’s field tells the decoder how fast the incoming Data Rate message is being sent. Set that field’s value before using the AMPS-TACS or NAMPS-NTACS Decoder.
Page 277 Chapter 8, Signaling Decoder Screen Using the AMPS/TACS, NAMPS/NTACS Decoder amps-de3.wmf Figure 72 Decoding AMPS-TACS Reverse Voice Channel (RVC) Data nmps-de2.wmf Figure 73 Decoding NAMPS-NTACS Reverse Voice Channel (RVC) Data...
Page 278 Chapter 8, Signaling Decoder Screen Using the AMPS/TACS, NAMPS/NTACS Decoder Interpreting Decoded Data The following information refers to all Reverse Control Channel (RECC) measurements, and the AMPS-TACS Reverse Voice Channel (RVC) measurements. See the next section for information about NAMPS-NTACS RVC measurements.
Page 279 Chapter 8, Signaling Decoder Screen Using the AMPS/TACS, NAMPS/NTACS Decoder NAMPS-NTACS Reverse Voice Channel Measurements Three types of RVC information can be decoded; selected using the Measure field. • DSAT displays the 6-digit DSAT (Digital Supervisory Audio Tone) or DST (Digital Signaling Tone) number, depending on the type of signal being received.
Page 280 Chapter 8, Signaling Decoder Screen Continuous Digital Controlled Squelch System Decoder Continuous Digital Controlled Squelch System Decoder The Continuous Digital Controlled Squelch System (CDCSS) Decoder analyzes digital data streams used to turn squelch on and off on digitally-controlled-squelch radios. cdcs-de1.wmf Figure 74 The CDCSS Sequence Decoder Screen AF Anl In...
Page 281 Chapter 8, Signaling Decoder Screen Continuous Digital Controlled Squelch System Decoder Arm Meas Arm measurement prepares the decoder to be triggered by an incoming signal when is selected. Single Code (oct) This field displays all of the code word combinations from the received data stream.
Page 282 Chapter 8, Signaling Decoder Screen Continuous Digital Controlled Squelch System Decoder Input Level This field specifies the signal level that you input (after de-emphasis if used). The higher the level of signal expected by the analyzer, the higher the trigger level is set.
Page 283 Chapter 8, Signaling Decoder Screen Continuous Digital Controlled Squelch System Decoder Single/Cont This field specifies how you want the analyzer to be armed: • Single is used to analyze and display the decoded information once each time Arm Meas is selected. •...
Page 284 Chapter 8, Signaling Decoder Screen Using the CDCSS Decoder Using the CDCSS Decoder AF Analyzer Settings For proper CDCSS decoder operation, make the following AF ANALYZER screen settings: • Filter 1 to <20Hz HPF (Required) • Filter 2 to 3kHz LPF (Recommended) •...
Page 285 Chapter 8, Signaling Decoder Screen Digital Paging Decoder Digital Paging Decoder The is used to test paging system transmitters using various formats, such as POCSAG and GSC (Golay Sequential Code). The field of the TX Tune Freq TEST screen is typically used to tune to the pager channel to be decoded. digi-de1.wmf Figure 75 The Digital Paging Decoder Screen...
Page 286 Chapter 8, Signaling Decoder Screen Digital Paging Decoder Data Display This field displays up to three different decoded parameters after a message has been analyzed: Pager code - the unique pager code number or address. Function - number representing one of the four types of signals that can be sent.
Page 287 Chapter 8, Signaling Decoder Screen Digital Paging Decoder Gate Time This field specifies how long the decoder analyzes a signal after it has been triggered. Up to 65 seconds of gate time can be specified. The minimum gate time should be set long enough to allow the preamble and all necessary data bits to be captured.
Page 288 Chapter 8, Signaling Decoder Screen Digital Paging Decoder Polarity This setting is used to match the polarity of the encoded signal being analyzed. Normal Operation. When this field is set to , a logical high (1) is displayed Norm when a positive peak in the received signal is detected. A negative peak displays a logical low (0).
Page 289 Chapter 8, Signaling Decoder Screen Dual-Tone Multi-Frequency (DTMF) Decoder Dual-Tone Multi-Frequency (DTMF) Decoder The DTMF Sequence Decoder analyzes Dual-Tone Multi-Frequency tone sequences and displays the associated parameters. dtmf-de2.wmf Figure 76 The DTMF Decoder Screen AF Anl In Audio frequency analyzer input selects the source of the signal to be analyzed. Operating Considerations This is a priority control field.
Page 290 Chapter 8, Signaling Decoder Screen Dual-Tone Multi-Frequency (DTMF) Decoder Gate Time This field specifies how long the decoder analyzes a signal after it has been triggered. Hi Tone This for the high frequency tone in each tone pair. The measurement type is selected by selecting the field to display a list of measurement choices.
Page 291 Chapter 8, Signaling Decoder Screen Dual-Tone Multi-Frequency (DTMF) Decoder Input Level This field specifies the signal level that you input (after de-emphasis if used). The higher the level of signal expected by the analyzer, the higher the trigger level is set.
Page 292 Chapter 8, Signaling Decoder Screen Dual-Tone Multi-Frequency (DTMF) Decoder Lo Tone This measurement field lists the frequency or frequency error for the low frequency tone in each tone pair. The measurement type is selected by selecting field to display a list of measurement choices. Freq Operating Considerations Frequency error is calculated by comparing the DTMF Encoder’s frequency...
Page 293 Chapter 8, Signaling Decoder Screen Dual-Tone Multi-Frequency (DTMF) Decoder Stop Meas Selecting this field stops the analyzer when making single measurements. The symbol column corresponds to the DTMF Encoder’s symbols assigned for each tone pair. As each tone pair is analyzed, the corresponding symbol is listed in this column.
Page 294 Chapter 8, Signaling Decoder Screen Using the DTMF Decoder Using the DTMF Decoder Measurement Limits 680 - 960 Hz Lo Tone: 1190 - 1660 Hz Hi Tone: Actual limits are typically slightly wider than this. However, the crossover point between Hi and Lo tone decoding is approximately 1.1 kHz. If incoming tones approach this point, unreliable measurements may be displayed (frequency measurement errors and spurious off times).
Page 295 Chapter 8, Signaling Decoder Screen EDACS Decoder EDACS Decoder This screen decodes the digital signaling data from an Ericsson GE EDACS® (Enhanced Digital Access Communications System) transmitter. This function is provided to test mobile radios, but it is not designed to test EDACS base stations. Before transmitter measurements can be made, the EDACS Encoder must be set up to provide the necessary system information.
Page 296 Chapter 8, Signaling Decoder Screen EDACS Decoder Arm Meas Select this field to prepare the decoder to be triggered by transmitted signaling data. When selected, the field indicates Status: Armed Data This area displays the decoded call request signaling data from your transmitter. The type of data displayed depends on the setting and the type Radio/Repeater...
Page 297 Chapter 8, Signaling Decoder Screen EDACS Decoder Radio/Repeater This field specifies whether the decoder will trigger on the received sync word of a mobile signal ( ), or on the sync word from a repeater ( ). It also Radio Repeater specifies how the received data will be interpreted.
Page 298 Chapter 8, Signaling Decoder Screen Using the EDACS Decoder Using the EDACS Decoder EDACS Transmitter Testing When the mobile is turned on, it automatically tunes to its pre-programmed control channel frequency. The Test Set generates the control channel signal using the RF Generator and the fields of the EDACS Encoder.
Page 299 Chapter 8, Signaling Decoder Screen Using the EDACS Decoder Define the Control Channel Settings 1. Turn AF Generator 1 off by positioning the cursor in front of the 3.00 value of the AFGen1 To field and pressing the ON/OFF key. 2.
Page 300 Chapter 8, Signaling Decoder Screen Using the EDACS Decoder Make Basic Transmitter Measurements 1. Key the mobile’s transmitter and verify that its transmit indicator is on. The call type, Group ID, and Logical ID information transmitted by your mobile is displayed under the Data field.
Page 301 Chapter 8, Signaling Decoder Screen Function Generator Decoder Function Generator Decoder func-dec.wmf Figure 78 The Function Generator Decoder Screen AF Anl In Audio frequency analyzer input selects the source of the signal to be analyzed. Operating Considerations This is a priority control field. Accessing the RX TEST or TX TEST screen overrides any changes made to this field in this screen.
Page 302 Chapter 8, Signaling Decoder Screen Function Generator Decoder Arm Meas Arm measurement prepares the decoder to be triggered by an incoming signal when making single measurements. Frequency This measurement displays the decoded signal’s frequency. Gate Time This field specifies the minimum time the decoder analyzes a signal after it has been triggered.
Page 303 Chapter 8, Signaling Decoder Screen Function Generator Decoder Stop Meas Selecting this field stops the analyzer when making single measurements. Single/Cont This field specifies how you want the analyzer to be armed: • Single is used to analyze and display the decoded information once each time Arm Meas is selected.
Page 304 Chapter 8, Signaling Decoder Screen Using the Function Generator Decoder Using the Function Generator Decoder Decoding Considerations Frequency measurements are affected by the Filter1 Filter2 Settling settings in the AF ANALYZER screen. De-Emphasis Four dashes (- - - -) are displayed if the incoming signal is out of range, or if the is too long for the frequency being measured.
Page 305 Chapter 8, Signaling Decoder Screen LTR Decoder LTR Decoder This decoder mode displays trunked signaling data for mobile radios and repeaters using the EF Johnson LTR® (Logic Trunked Radio) format. Itr-de1.wmf Figure 79 The LTR Trunked Radio Decoder Screen AF Anl In Audio frequency analyzer input selects the source of the signal to be analyzed (almost always for LTR decoding).
Page 306 Chapter 8, Signaling Decoder Screen LTR Decoder Data Rate This display field lists the data rate of the received signal. Operating Considerations This measurement relies on the LTR Encoder screen’s data rate setting. Set the encoder’s field to the expected incoming data rate for accurate Data Rate measurements (typically 297.6 bps).
Page 307 Chapter 8, Signaling Decoder Screen LTR Decoder LTR Display • Radio - displays the mobile’s transmitted trunking data. An example display might look like this: Area : 0 Goto : 2 Home : 2 ID : 128 Free : 31 •...
Page 308 Chapter 8, Signaling Decoder Screen LTR Decoder Single/Cont This field specifies how long you want the analyzer to decode incoming signals: • Single tells the analyzer to display valid LTR information received during one gate time. • Cont is used to automatically re-arm the analyzer and display the measurements on a continual basis until Single is selected.
Page 309 Chapter 8, Signaling Decoder Screen Using the LTR Decoder Using the LTR Decoder Decoding Mobile Radio Signaling Data A transmit channel must be established before a mobile radio is tested (otherwise the transmitter will attempt to transmit but time-out and de-key automatically). A procedure for establishing a trunked transmit channel is provided in "Using the LTR Encoder"...
Page 310 Chapter 8, Signaling Decoder Screen Using the LTR Decoder Decoding Repeater Signaling Data Press the PRESET key. 1. Access the DUPLEX TEST screen. 2. Set the Tune Mode to Manual. 3. Enter your repeater’s transmit frequency in the Tune Freq field. 4.
Page 311 Chapter 8, Signaling Decoder Screen MPT 1327 Decoder MPT 1327 Decoder The MPT 1327 Decoder screen is used with the MPT 1327 Encoder screen to decode and display MPT 1327 data streams. Like the MPT 1327 Encoder, the MPT 1327 Decoder is primarily intended to be controlled using IBASIC programs running on the Test Set’s IBASIC controller or on an external controller.
Page 312 IBASIC control. Decoder Triggering For MPT 1327 signaling detection, the decoder should be configured for repetitive retriggering using the HP-IB command: TRIGger:MODE:RETRigger REPetitive When the decoder is armed it is triggered whenever it receives the synchronization sequence appropriate to the test mode (selected on the MPT 1327 Encoder screen).
Page 313 Chapter 8, Signaling Decoder Screen MPT 1327 Decoder Table 7 Triggering the MPT 1327 Decoder Test Mode Decoder Synchronization Sequence Control SYNC Traffic SYNT 1200Hz 1111 1800Hz 0000 Dotting 1010 The SYNC and SYNT patterns are those defined for the MPT 1327 Encoder. (The defaults are C4D7 and 3B28 respectively.)
Page 314 IBASIC can be informed about the arrival of a message in the decoder buffer. To do this, configure the HP-IB status registers to cause a service request (SRQ) on the negative transition event of bit 12, “Decoder Result Available” in the Hardware Status Register #1.
Page 315 •This mode is selected with the following HP-IB with the command: •DECoder:MPT1327:TIME:MODE ’SLOT • works in the Control and Traffic test modes, it is disabled in all other modes.
Page 316 Chapter 8, Signaling Decoder Screen NMT Decoder NMT Decoder The NMT Encoder and Decoder work together to test Nordic Mobile Telephone equipment used in a number of countries using different NMT standards. As each standard is selected, the Test Set configures the encoder and decoder to create and measure the corresponding RF carrier and digital data structure.
Page 317 Chapter 8, Signaling Decoder Screen NMT Decoder nmt-de1.wmf Figure 81 The NMT Decoder Screen AF Anl In Audio frequency analyzer input selects the input for the analyzer. When selected, this field displays a list of choices: • The output of the AM, FM, or SSB demodulators. •...
Page 318 Chapter 8, Signaling Decoder Screen NMT Decoder Frame Log The Frame Log area lists the recorded frame information generated by the encoder and received by the decoder. Field descriptions for this area are listed together. The Direction column tells if a frame was transmitted by the encoder (T), or received by the decoder (R).
Page 319 Chapter 8, Signaling Decoder Screen NMT Decoder Input Level This field specifies the signal level that you input. The higher the level of signal expected by the analyzer, the higher the trigger level is set. Operating Considerations The unit-of-measure is determined by the setting.
Page 320 Chapter 8, Signaling Decoder Screen NMT Decoder Run Test Selecting this function executes (runs) the NMT test specified in the Load Test field or entered directly into the field. NMT Test Entry Single/Cont This field specifies how you want the test to be run: •...
Page 321 Chapter 8, Signaling Decoder Screen Using the NMT Decoder/Encoder Using the NMT Decoder/Encoder General Encoder Operation The following are fields that are typically used for testing different types of NMT equipment. Refer to the individual field descriptions for detailed information on each field’s function and operating parameters.
Page 322 Chapter 8, Signaling Decoder Screen Using the NMT Decoder/Encoder General Decoder Operation The NMT Decoder screen has several uses: • Entering NMT programming commands. • Loading existing NMT tests from a variety of storage media. • Running NMT tests. • Decoding received NMT signals.
Page 323 Chapter 8, Signaling Decoder Screen Using the NMT Decoder/Encoder Standard Equivalents Only two standards are referred to in this section: STD450 and STD900. All other national standards are based on these two. If a field description says “only used with the STD900 standard”, the field can also be used with other national standards listed under the STD900 equivalents below.
Page 324 Using the NMT Decoder/Encoder Automated NMT Radio Tests The HP 11807A Option 006 NMT Cellular Tests software for the HP 8920A provides comprehensive automated tests of NMT mobile stations. All Test Set RF, AF, and encoder/decoder settings are made automatically, requiring minimal operator inputs.
Page 325 Chapter 8, Signaling Decoder Screen Using the NMT Decoder/Encoder Special Frame Suffixes Some frame designations include a suffix to identify specific encoder screen fields (such as TC2 for Alternate Traffic Channel) or to indicate special frame values affected (such as the S suffix that indicates Battery Save information; example - 1aS).
Page 326 Chapter 8, Signaling Decoder Screen Creating NMT Tests Creating NMT Tests The NMT Encoder outputs signals using programs running in the NMT Decoder. This differs from the Test Set’s other signaling encoder functions that have a “send” function to directly output their signals (such as DTMF and Tone Sequence).
Page 327 Chapter 8, Signaling Decoder Screen Creating NMT Tests Creating NMT Tests Tests can be created and saved using any of these methods: • Writing programs on a connected external controller, downloading them into the Test Set’s IBASIC RAM, and then storing them on mass storage. •...
Page 328 Chapter 8, Signaling Decoder Screen Creating NMT Tests Using Direct Command Entry The decoder’s field allows you to directly enter program NMT Test Entry commands into the decoder’s RAM. Program line numbers are not used, and no LIST or EDIT function is available for programs entered this way. This capability is provided to allow direct entry of small programs without the need of external equipment or the need to store the program for future use.
Page 329 Chapter 8, Signaling Decoder Screen Creating NMT Tests Programming Using an External Computer Writing programs on an external computer using BASIC allows you to write and edit the NMT program, and then store it on mass media (memory card, RAM disk, external disk).
Page 330 To copy a program from your BASIC computer to the Test Set’s RAM, follow these steps: 1. Connect an HP-IB cable from your BASIC computer to the Test Set. 2. Load the program into your computer. 3. Set the HP-IB Mode field in the I/O CONFIGURE screen to Talk&Listen.
Page 331 Chapter 8, Signaling Decoder Screen Creating NMT Tests Program Command Syntax The following list describes the NMT command syntax and parameters. Commands can be entered directly into the decoder’s field, or NMT Test Entry used in test programs saved on mass storage. All commands can be preceded by an integer as a label for branching purposes.
Page 332 Chapter 8, Signaling Decoder Screen Creating NMT Tests GOTO l Unconditionally jump to the label reference l. Valid entries for the parameter l are integers from 0 to 255. The label reference must exist within the program or an error will occur after the END statement is entered.
Page 333 Chapter 8, Signaling Decoder Screen Creating NMT Tests SEND f Send the designated frame Valid entries for the parameter f are as follows: 1A, 1A’ or 1AP, 1A’’ or 1APP, 1AS, 1A’S or 1APS, 1A’’S or 1APPS, 1B, 1BS, 1BTA1, 1BTA2, 2A, 2A’ or 2AP, 2A’’ or 2APP, 2B, 2B’...
Page 334 Chapter 8, Signaling Decoder Screen Creating NMT Tests CLEAR Clear the received frame register. This statement should appear before an IF f l statement in the test program. SET n m Set the counter n to the value m. Valid entries for the parameter n are integers 1 and 2. Valid entries for m are integers from 0 to 255.
Page 335 Chapter 8, Signaling Decoder Screen Tone Sequence Decoder Tone Sequence Decoder The Tone Sequence Decoder analyzes sequential tone signals and displays the associated parameters. tone-dec.wmf Figure 82 The Tone Sequence Decoder Screen AF Anl In Audio frequency analyzer input selects the source of the signal to be analyzed. Operating Considerations This is a priority control field.
Page 336 Chapter 8, Signaling Decoder Screen Tone Sequence Decoder Freq This measurement column lists the tone frequency for each symbol received in the tone sequence. Freq Error This measurement column lists the frequency difference between the tone frequency specified for each symbol in the Tone Sequence Encoder screen and the frequency measured for each symbol in the Tone Sequence Decoder screen.
Page 337 Chapter 8, Signaling Decoder Screen Tone Sequence Decoder Off Time This measurement column lists the length of time each tone was “off” prior to the next tone being received. On Time This measurement column lists the length of time each tone was “on.” Single/Cont This field specifies how you want the analyzer to be armed: •...
Page 338 Chapter 8, Signaling Decoder Screen Tone Sequence Decoder S:\HP892XX\USRGUIDE\manual\decoscrn.fb...
Page 339 Duplex Test Screen...
Page 340 Chapter 9, Duplex Test Screen Block Diagram Block Diagram Dƒˆ‡ÃQ‚…‡ DAÃAvy‡r… SAÃDI6…‡ !"ÃxC“ 6IUÃDI TU6B@T TU6B@T SAÃDI CvtuÃQ‚r… 6‡‡rˆh‡‚… UˆrÃH‚qr UˆrÃA…r„ 6ˆ‡‚ÃÃHhˆhy $ HC“ 6AÃ6yÃD UYÃQ‚r… AHÃ9r€‚q Hrh†ˆ…r€r‡ UYÃQ…Ãar…‚ Srsr…rpr ar…‚ AHÃ9r‚q Avy‡r…Ã Avy‡r…Ã! 6HÃ9r€‚q $C“ÃCQA $xC“ÃGQA TT79r€‚q A…‚€Ã6V9DPÃDI 6ˆqv‚ÃD A…‚€ÃShqv‚ÃD‡r…shpr Shqv‚ÃD‡...
Page 341 Chapter 9, Duplex Test Screen Field Descriptions Field Descriptions dxscrn.wmf Figure 84 The Duplex Test Screen AC Level This is the default measurement for this field. The type of measurement shown is dependent on the settings. AF Anl In See Also AF Anl In field description, on page 342 "Displaying Measurements"...
Page 342 Chapter 9, Duplex Test Screen Field Descriptions AF Anl In Audio frequency analyzer input selects the input for the analyzer. When selected, this field displays a list of choices. Signals can be analyzed from three different types of inputs: • the output of the AM, FM, or SSB demodulators •...
Page 343 Chapter 9, Duplex Test Screen Field Descriptions AF Freq This is the default measurement for this field. Selecting this field displays the following measurement choices: SINAD Distortion SNR (Signal to Noise Ratio) AF Frequency DC Level Current - DC only Operating Considerations This is a priority control field.
Page 344 Chapter 9, Duplex Test Screen Field Descriptions AFGen1 Freq This field sets the frequency for the first audio frequency sinewave generator. AFGen1 To This field is used to set two values for the first audio frequency generator: • The upper field determines whether the AF signal modulates the RF Generator, or is output through the AUDIO OUT connector.
Page 345 Chapter 9, Duplex Test Screen Field Descriptions Amplitude This field adjusts the amplitude of the RF Generator. Operating Considerations This is a priority control field. Accessing the RX TEST or TX TEST screen overrides any changes made to this field in other screens. If a microphone is connected, and the amplitude is set to , keying the microphone causes the amplitude to turn on to its previous level until the...
Page 346 Chapter 9, Duplex Test Screen Field Descriptions Audio Out This field selects ac or dc coupling to the AUDIO OUT connector. De-Emphasis This setting selects or bypasses the 750 ms de-emphasis networks in the audio analyzer and internal speaker circuitry. Operating Considerations This is a priority control field.
Page 347 Chapter 9, Duplex Test Screen Field Descriptions Detector This setting selects the type of detector used when measuring and displaying AF signal levels. Detector Types • RMS displays the RMS value of signals. • displays the RMS value of a signal multiplied by the square-root-of-2. •...
Page 348 Chapter 9, Duplex Test Screen Field Descriptions Ext TX Key This field controls a switch at the MIC/ACC connector. Its intended use is to “key” an external transmitter. See Also "Interaction Between Screens" on page 54 FM Coupling This field selects ac or dc coupling between the RF Generator’s frequency modulator and the rear-panel MODULATION INPUT connector.
Page 349 Chapter 9, Duplex Test Screen Field Descriptions IF Filter This field selects the desired IF filter bandwidth for modulated signals being analyzed. Input Port This field selects the RF IN/OUT or ANT IN connector for making RF measurements. The RF IN/OUT port must be used for making TX Power measurements on this screen.
Page 350 Chapter 9, Duplex Test Screen Field Descriptions Output Port This field selects the RF Generator’s output port. Operating Considerations Maximum signal levels at each port are printed on the front panel. Applying reverse RF power to the DUPLEX OUT connector can damage the CAUTION: instrument.
Page 351 Chapter 9, Duplex Test Screen Field Descriptions Tune Freq RF analyzer tune frequency sets the center frequency for the RF signal to be analyzed. Operating Considerations If the field is set to , the frequency is set by the instrument. Tune Mode Auto If the...
Page 352 Chapter 9, Duplex Test Screen Field Descriptions TX Freq Error/TX Frequency This measurement displays transmitter frequency error or absolute Transmitter Frequency, depending on the setting. Tune Mode See Also Tune Mode field description (this page) TX Power Transmitter power measures RF power at the RF IN/OUT port. Operating Considerations Maximum signal levels at each port are printed on the front panel.
Page 353 Signaling Encoder (AF Generator 2)
Page 354 Chapter 10, Signaling Encoder (AF Generator 2) Field Descriptions for Encoder Modes Field Descriptions for Encoder Modes The Encoder (AF Generator 2) uses several screens to generate various signaling formats. These screens are accessed by selecting from the ENCODER To Screen menu, and then selecting the field.
Page 355 Chapter 10, Signaling Encoder (AF Generator 2) AMPS-TACS NAMPS-NTACS Encoder AMPS-TACS NAMPS-NTACS Encoder • AMPS = Advanced Mobile Phone Service. • NAMPS = Narrowband Advanced Mobile Phone Service. • TACS = Total Access Communications Systems. • JTACS = Total Access Communications System for Japan. •...
Page 356 Chapter 10, Signaling Encoder (AF Generator 2) AMPS-TACS NAMPS-NTACS Encoder amps-en3.wmf Figure 86 AMPS-TACS Mode Forward Voice Channel (FVC) nmps-en1.wmf Figure 87 NAMPS-NTACS Mode Forward Voice Channel (FVC) AFGen2 To This field determines whether the data stream modulates the RF Generator, or is output through the AUDIO OUT connector.
Page 357 Chapter 10, Signaling Encoder (AF Generator 2) AMPS-TACS NAMPS-NTACS Encoder Busy/Idle (FOCC) This field selects the busy/idle status information to be included in the signaling sequence. • Idle sets the busy/idle bits of the forward control channel information to indicate an idle state.
Page 358 Chapter 10, Signaling Encoder (AF Generator 2) AMPS-TACS NAMPS-NTACS Encoder Data Rate This setting determines the rate that the FOCC and FVC information are output. Operating Considerations This field specifies the data rate for the signal being decoded, and must be set before using the AMPS-TACS/NAMPS-NTACS Decoder.
Page 359 Chapter 10, Signaling Encoder (AF Generator 2) AMPS-TACS NAMPS-NTACS Encoder Filler (FOCC) UurÃqh‡hÃ’‚ˆÃr‡r…Ãur…r AP88 T‡…rh€Ã7 T‡…rh€Ã6 Avyyr… Avyyr… Hr††htr Hr††htr Qh…v‡’ Qh…v‡’ Ds‚…€h‡v‚ !Ã7v‡† !%Ã7v‡† !Ã7v‡† 8‚‡r‡†Ã‚sÃ‡urÃHr††htrÃ‚…ÃAvyyr…ÃAvryq XPS9Ã7 XPS9Ã6 v†Ã‚ˆ‡ƒˆ‡ÃvÃ‡uv†Ã†r„ˆrpr Ã7v‡† Ã7v‡† #Ã7v‡† #Ã7v‡† #Ã7v‡† XPS9 S@Q@6UÃ S@Q@6UÃ S@Q@6UÃ! 9PUUDIB T`I8 XPS9Ã6...
Page 360 Chapter 10, Signaling Encoder (AF Generator 2) AMPS-TACS NAMPS-NTACS Encoder Each field contains 7 hexadecimal characters representing the 2 type bits Filler and 26 information bits of the control filler/message word. The dotting, word sync, and parity bits are generated automatically. Operating Considerations The control filler is sent continuously when is selected, or after a...
Page 361 Chapter 10, Signaling Encoder (AF Generator 2) AMPS-TACS NAMPS-NTACS Encoder Message (FOCC) UurÃqh‡hÃ’‚ˆÃr‡r…Ãur…r AP88 T‡…rh€Ã6 T‡…rh€Ã7 Avyyr… Avyyr… Hr††htr Hr††htr Qh…v‡’ Qh…v‡’ Ds‚…€h‡v‚ !Ã7v‡† !%Ã7v‡† !Ã7v‡† 8‚‡r‡†Ã‚sÃ‡urÃHr††htrÃ‚…ÃAvyyr…ÃAvryq XPS9Ã7 XPS9Ã6 v†Ã‚ˆ‡ƒˆ‡ÃvÃ‡uv†Ã†r„ˆrpr Ã7v‡† Ã7v‡† #Ã7v‡† #Ã7v‡† #Ã7v‡† XPS9 S@Q@6UÃ S@Q@6UÃ S@Q@6UÃ! 9PUUDIB T`I8 XPS9Ã6...
Page 362 Chapter 10, Signaling Encoder (AF Generator 2) AMPS-TACS NAMPS-NTACS Encoder Message (FVC) 7KH GDWD \RX HQWHU KHUH AÃWÃ8 Qh…v‡’ Hr††htrÃ Ds‚…€h‡v‚ !Ã7v‡† !%Ã7v‡† !Ã7v‡† 8‚‡r‡†Ã‚sÃ‡urÃHr††htrÃ‚…ÃAvryq 0HVVDJH :RUG LV RXWSXW LQ WKLV VHTXHQFH Ã7v‡† Ã7v‡† #Ã7v‡† Ã7v‡† #Ã7v‡† "&Ã7v‡† 5(3($7 5(3($7 '277,1*...
Page 363 Chapter 10, Signaling Encoder (AF Generator 2) AMPS-TACS NAMPS-NTACS Encoder Message (FVC) Hr††htr 9T6U !"#$%& !$$%7 Trq 9T6U 9T6U 9T6U 9T6U Hr††htrÃDs‚ Qh…v‡’ T’pÃ‚…q !#iv‡† !#iv‡† !#iv‡† !#iv‡† "iv‡† !'iv‡† !iv‡† 9h‡hÃ9v…rp‡v‚ Figure 91 NAMPS-NTACS FVC Message Data output Format This description applies to the NAMP-NTAC mode.
Page 364 Chapter 10, Signaling Encoder (AF Generator 2) AMPS-TACS NAMPS-NTACS Encoder Message/DST (FVC) This field is available only in NAMP-NTAC mode. This field determines what type of data is sent when is selected: Send 1. Selecting Message causes the contents of the Message field to be output. 2.
Page 365 Chapter 10, Signaling Encoder (AF Generator 2) AMPS-TACS NAMPS-NTACS Encoder SAT Freq (FVC) This field is available only in AMPS-TACS mode. This field sets the supervisory audio tone’s frequency. This signal is sent continuously whenever the FVC is selected, except while the Message is being sent.
Page 366 Chapter 10, Signaling Encoder (AF Generator 2) AMPS-TACS NAMPS-NTACS Encoder Send Mode This field selects the mode used when is selected to output the message. Send • Single outputs the entire message once. • Burst outputs the Message the number of times specified in the Bursts field. •...
Page 367 Chapter 10, Signaling Encoder (AF Generator 2) Using the AMPS-TACS, NAMPS-NTACS Encoder Using the AMPS-TACS, NAMPS-NTACS Encoder Using This Information This screen is used to create various types of cellular telephone data streams. Selecting the field displays a list of the supported signaling formats. Standards The theory and applications of cellular telephone systems are beyond the scope of this manual.
Page 368 Chapter 10, Signaling Encoder (AF Generator 2) CDCSS Encoder CDCSS Encoder The Continuous Digital Controlled Squelch System (CDCSS) Encoder generates signals to test radios that use a digitally-encoded signal to turn squelch on and off. The encoder can be used to modulate the RF Generator, or it can be output through the front-panel AUDIO OUT connector.
Page 369 Chapter 10, Signaling Encoder (AF Generator 2) CDCSS Encoder AFGen2 To This audio frequency generator control contains two fields: • The upper field determines whether the CDCSS Encoder modulates the RF Generator, or is output through AUDIO OUT. • The lower field sets the amplitude (including Off). Audio Out Audio out coupling selects ac or dc coupling of the encoder to the AUDIO OUT connector when the upper...
Page 370 Chapter 10, Signaling Encoder (AF Generator 2) CDCSS Encoder FM Coupling This field alters the FM modulator to allow DCFM from internal and external modulation sources. This field also selects ac or dc coupling between the RF Generator’s frequency modulator and the rear-panel MODULATION INPUT connector.
Page 371 Chapter 10, Signaling Encoder (AF Generator 2) CDCSS Encoder Send Mode This field selects the output format used when is selected to output a Send sequence. • Single outputs the entire sequence once. • Burst outputs the sequence the number of times specified in the Bursts field. •...
Page 372 Chapter 10, Signaling Encoder (AF Generator 2) Using the CDCSS Encoder Using the CDCSS Encoder The CDCSS Data Stream 'DWD LV 6KLIWHG2XW 7KLV 'LUHFWLRQ (UURU 'HWHFWLRQ &RGH )L[HG 'LJLW &RGH <RX...
Page 373 Chapter 10, Signaling Encoder (AF Generator 2) Digital Paging Encoder Digital Paging Encoder The Digital Paging Encoder outputs signals to test pagers using a variety of digital access formats and frequencies. The signal can be used to modulate the RF Generator, or it can be output through the front-panel AUDIO OUT connector.
Page 374 Chapter 10, Signaling Encoder (AF Generator 2) Digital Paging Encoder AFGen2 To This field, audio frequency generator 2 to, contains two fields: • The upper field determines whether the Digital Paging Encoder’s signal modulates the RF Generator, or is output through the AUDIO OUT connector. •...
Page 375 Chapter 10, Signaling Encoder (AF Generator 2) Digital Paging Encoder FM Coupling This field alters the FM modulator to allow DCFM from internal and external modulation sources. This field also selects ac or dc coupling between the RF Generator’s frequency modulator and the rear-panel MODULATION INPUT connector.
Page 376 Chapter 10, Signaling Encoder (AF Generator 2) Digital Paging Encoder Pager Alpha-Numeric Message This field specifies the message you are sending to an alpha-numeric format pager. This field is only displayed when the is set to Pager Type Numeric Alpha-Num Pager Code This field is used to identify the individual code number (address) of the pager you are testing.
Page 377 Chapter 10, Signaling Encoder (AF Generator 2) Digital Paging Encoder Send Selecting this field causes the entire data stream to be output (including the preamble, address, and message). Send Mode This field selects the output format used when is selected to output a Send sequence.
Page 378 Chapter 10, Signaling Encoder (AF Generator 2) DTMF Sequence Encoder DTMF Sequence Encoder The DTMF Sequence Generator creates Dual-Tone Multi-Frequency tone sequences of variable frequency, amplitude, and duration. It’s signal can be used to modulate the RF Generator, or it can be output through the front-panel AUDIO OUT connector.
Page 379 Chapter 10, Signaling Encoder (AF Generator 2) DTMF Sequence Encoder AFGen2 To This audio frequency generator control contains two fields: • The upper field determines whether the DTMF sequence modulates the RF Generator, or is output through the front-panel AUDIO OUT connector. •...
Page 380 Chapter 10, Signaling Encoder (AF Generator 2) DTMF Sequence Encoder Pre-Emp This field determines whether the encoder’s signal passes through or bypasses the 750 ms pre-emphasis network. Pre-emphasis may be required when testing some FM receivers. See Also Twist field description, on page 381 Send Selecting this field causes the DTMF sequence to be output.
Page 381 Chapter 10, Signaling Encoder (AF Generator 2) DTMF Sequence Encoder Twist Twist is the ratio of amplitudes (in dB) between the high frequency and low frequency tone in each DTMF pair. A positive value indicates a higher amplitude for the high frequency tones. A negative value indicates a higher amplitude for the low frequency tones.
Page 382 Chapter 10, Signaling Encoder (AF Generator 2) EDACS Encoder EDACS Encoder This encoder simulates an Ericsson/GE EDACS® (Enhanced Digital Access Communications System) repeater site to test trunked mobile radios using that format. edac-en1.wmf Figure 96 The EDACS Trunked Radio Encoder Mode Screen S:\HP892XX\USRGUIDE\manual\encoscrn.fb...
Page 383 Chapter 10, Signaling Encoder (AF Generator 2) EDACS Encoder AFGen2 To This audio frequency generator control is used to specify where the encoder’s data is sent: • FM is used to frequency modulate the RF Generator. This is the normally-used setting. (Refer to the FM Coupling field description.) •...
Page 384 Chapter 10, Signaling Encoder (AF Generator 2) EDACS Encoder Data Rate This field sets the data rate (in bits-per-second) for the high-speed signaling. The value can be changed using the keypad, or by selecting a value from the field. However, the 9600 bps rate is the EDACS default, and should Standard not be changed under most circumstances.
Page 385 Chapter 10, Signaling Encoder (AF Generator 2) EDACS Encoder Logical ID This field is used to specify the identification number of the calling radio. It should be set to the Logical ID of the radio being tested when performing transmitter tests. Generally, when performing receiver tests, it must be set to a Logical ID different from that of the radio being tested.
Page 386 Chapter 10, Signaling Encoder (AF Generator 2) EDACS Encoder Signaling Dev This field is used to specify the high-speed data level. The unit-of-measure used depends on the setting. AFGen2 To • When AFGen2 To is set to FM, the displayed units are kHz or Hz. This is the normal- ly-used setting for testing EDACS radios.
Page 387 Chapter 10, Signaling Encoder (AF Generator 2) EDACS Encoder Status This field indicates what the encoder is doing. Idle is displayed when no data is being sent. Control is displayed when control channel data is being output. Working is displayed when a handshake has been performed and working channel data is being sent.
Page 388 Chapter 10, Signaling Encoder (AF Generator 2) Using the EDACS Encoder Using the EDACS Encoder Automated Test Software Hewlett-Packard offers software packages to fully test your EDACS radio in a fraction of the time normally required for complete manual testing. Under software control, you can perform receiver and transmitter tests on several channels in succession very quickly.
Page 389 Chapter 10, Signaling Encoder (AF Generator 2) Using the EDACS Encoder Testing EDACS Mobiles When the mobile is turned on, it automatically tunes to its pre-programmed control channel frequency. The Test Set generates the control channel’s carrier and site identification data using the RF Generator’s and the EDACS Encoder’s settings.
Page 390 Chapter 10, Signaling Encoder (AF Generator 2) Using the EDACS Encoder Mobile Receiver Test Procedure The following procedure establishes a control channel connection between the Test Set and your mobile, and then performs a handshake to pass the mobile to a working channel.
Page 391 Chapter 10, Signaling Encoder (AF Generator 2) Using the EDACS Encoder Get the Mobile Up on the Control Channel 1. Turn AF Generator 1 Off (to disable the default 3 kHz FM deviation). To do this, po- sition the cursor in front of the 3.00 value in the AFGen1 To field on the RF GEN- ERATOR or DUPLEX TEST screen and press the ON/OFF key.
Page 392 Chapter 10, Signaling Encoder (AF Generator 2) Using the EDACS Encoder Make Receiver Measurements 1. Press the RX key to access the RX TEST screen. 2. Turn AF Generator 1 On. (Position the cursor in front of the Off entry in the lower part of the AFGen1 To field, and press the ON/OFF key.) The entry should now read 3.00.
Page 393 Chapter 10, Signaling Encoder (AF Generator 2) Function Generator Encoder Function Generator Encoder The Function Generator provides single-tone audio frequency signals of various waveforms, amplitudes, and frequencies. Its signal can be used to modulate the RF Generator, or it can be output through the front-panel AUDIO OUT connector. func-ec.wmf Figure 97 The Function Generator Encoder Screen...
Page 394 Chapter 10, Signaling Encoder (AF Generator 2) Function Generator Encoder AFGen2 Freq This field sets the tone frequency for the Function Generator. AFGen2 To This audio frequency generator control contains two fields: • The upper field determines whether the Function Generator’s signal modulates the RF Generator, or is output through the AUDIO OUT connector.
Page 395 Chapter 10, Signaling Encoder (AF Generator 2) Function Generator Encoder Waveform This field selects the desired waveform for AF Generator 2. The available waveforms are as follows: Sine wave Square wave Triangle wave Ramp (positive-going and negative-going) DC± Universal Noise Gaussian Noise...
Page 396 Chapter 10, Signaling Encoder (AF Generator 2) LTR Encoder LTR Encoder This Encoder mode is used to test trunked mobile radios that use the EF Johnson LTR® (Logic Trunked Radio) format. Two different trunking messages can be used (Message1 and Message 2) to allow you to change radio operation while the encoder is running.
Page 397 Chapter 10, Signaling Encoder (AF Generator 2) LTR Encoder AFGen2 To This audio frequency generator control contains two fields: • The upper field determines whether the LTR Encoder’s signal modulates the RF Gen- erator, or is output through AUDIO OUT (normally set to FM for LTR signaling). •...
Page 398 Chapter 10, Signaling Encoder (AF Generator 2) LTR Encoder Free 1, Free 2 Enter the repeater number to transmit to when the radio is keyed. When channel switching is performed, you would specify any of the other repeaters in the system.
Page 399 Chapter 10, Signaling Encoder (AF Generator 2) LTR Encoder Send Mode This field selects the output format used when is selected to output a Send sequence. is typically used for LTR radio testing. Cont • Single outputs Message 1 or Message 2 once. •...
Page 400 Chapter 10, Signaling Encoder (AF Generator 2) Using the LTR Encoder Using the LTR Encoder 'DWD 'LUHFWLRQ ELWV ELWV ELWV ELWV ELWV ELWV ELWV +20( &+$11(/ ,' &2'( 2) )5(( *272 5(3($7(5 (5525 &+(&. 6<1&...
Page 401 Chapter 10, Signaling Encoder (AF Generator 2) Using the LTR Encoder Radio Test Examples The following procedures establish a receiver or transmitter trunked channel on the home channel. To Test Your Receiver To establish a trunked receiver channel on the home channel, 1.
Page 402 Chapter 10, Signaling Encoder (AF Generator 2) Using the LTR Encoder To make a 12 dB SINAD measurement 1. Set Filter 1 to 300Hz HPF and Filter 2 to 3kHz LPF. 2. Decrease the Amplitude until approximately 12 dB SINAD is displayed. 3.
Page 403 This procedure must be done very quickly to work. The best way to perform a channel change is to use an HP-IB or IBASIC program to change the RF Generator’s frequency to the new channel frequency immediately after the appropriate message has been output.
Page 404 Chapter 10, Signaling Encoder (AF Generator 2) MPT 1327 Encoder MPT 1327 Encoder This encoder is used to test trunked mobile radios that use the MPT 1327 standard. It is primarily intended to be controlled using IBASIC programs running on the Test Set’s IBASIC controller or on an external controller. mpt-en1.wmf Figure 100 The MPT 1327 Trunked Radio Encoder Mode Screen...
Page 405 Chapter 10, Signaling Encoder (AF Generator 2) MPT 1327 Encoder Aloha Number field allows you to enter the aloha number. The aloha Aloha Number number defines the number of timeslots in the random access frames on the forward control channel. The value entered in this field is translated to a frame length according to table 9 The aloha number is a two-digit decimal integer without leading zeros.
Page 406 Chapter 10, Signaling Encoder (AF Generator 2) MPT 1327 Encoder Control Channel field allows you to enter the Control Channel number. Control Channel Radio units (RU) are programmed to look for control channel signaling on a restricted set of radio channels, known as the hunt group. It is essential that the channel number on which the Test Set transmits the control channel signaling matches one of the channels in the RU’s hunt group.
Page 407 Undisplayed Controls Some MPT 1327 controls are not displayed on the encoder screen; they are only accessed using IBASIC commands over HP-IB. These controls include the delay parameter, the SYNC and SYNT synchronization codewords, and the message and filler buffers.
Page 408 Chapter 10, Signaling Encoder (AF Generator 2) MPT 1327 Encoder Forward Control Channel Message and Filler Buffers This control is only available using IBASIC commands; it is not displayed on the MPT 1327 Encoder screen. The encoder screen field selects the type of signal being transmitted Test Mode by the signaling hardware (as explained in ).
Page 409 Chapter 10, Signaling Encoder (AF Generator 2) MPT 1327 Encoder The control channel filler buffer comprises 32 individual timeslots. It is accessed only through the HP-IB with the following command: ENCoder:MPT1327:FILLer:DATA n,string Where • n is the location selector and has the range 1 through 32.
Page 410 Chapter 10, Signaling Encoder (AF Generator 2) MPT 1327 Encoder ,%$6,& ENC : MPT1327 : FILL : DATA 1,’ALH ,,100 , 0 , 0 , 1 ‘ 6,*1$/,1* ),50:$5( $66(0%/(5 (1&2'(5 6&5((1 SETTING & DEFAULTS ALH 0,8191 , 100 , 0 , 0 , 1 PFIX = 0 80FFFC02E001 IDENT = 8191...
Page 411 Chapter 10, Signaling Encoder (AF Generator 2) MPT 1327 Encoder If the signaling command has the data codeword extension, DCW2 DCW4 subsequent timeslot locations are overwritten with the data codewords. If this results in a write to a timeslot greater than 32, the write will wrap back to timeslot one.
Page 412 If the signaling command has one of the data codeword extensions (DCW2 or DCW4), subsequent timeslot loca- tions are overwritten with the data codewords. The control channel message buffer is activated by the following HP-IB command: ENCoder:SEND If the encoder is configured for single operation, the message buffer contents will be sent once.
Page 413 Chapter 10, Signaling Encoder (AF Generator 2) MPT 1327 Encoder TIMESLOT 1 7721B4C0 . . D9 5439AB12 . . 01 666430CB . . AD 098BB27A . . 01 201759BC . . A8 7492AB40 . . 00 449DDE30 . . 02 91032000 .
Page 414 Chapter 10, Signaling Encoder (AF Generator 2) MPT 1327 Encoder When is set to , the control channel filler and message Test Mode Traffic buffers are disabled, and a traffic channel message buffer is enabled. A message is sent from the traffic channel message buffer on demand by use of ENC:SEND. Only messages in message buffer timeslot 1 and any contiguous timeslots are sent.
Page 415 Chapter 10, Signaling Encoder (AF Generator 2) MPT 1327 Encoder QS@6H7G@ H@TT6B@ 3% % 6666 UDH@TGPU !'Ã7DUT !iƒ†Ã2Ã %'€† T`I8 88T8 699S@TTÃ8P9@XPS9 699S@TTÃ8P9@XPS9 %# % %# %# 8#9& QS@6H7G@ Q6SDU` Q6SDU` 8P9@XPS9ÃH@TT6B@ % % % % #& %...
Page 416 Chapter 10, Signaling Encoder (AF Generator 2) MPT 1327 Encoder Table 11 describes the signaling encoder as it is changed between the various test modes. Particular reference is made to how the control and traffic channel message structures are started and stopped. Table 11 Signaling Mode Transitions Table To From...
Page 417 Using Automated Test Software The HP 11807A Option 012 MPT 1327 Trunked Radio Tests software provides comprehensive automated tests of MPT 1327 radios. All Test Set RF, AF, and Encoder/Decoder controls are automatically set, requiring minimal operator inputs.
Page 418 Chapter 10, Signaling Encoder (AF Generator 2) Using the MPT 1327 Encoder System Identity uses two areas to enter the system identity number as System Identity either a decimal or hexadecimal value. When a value is entered in either field, the corresponding value is automatically entered in the other field.
Page 419 Chapter 10, Signaling Encoder (AF Generator 2) Using the MPT 1327 Encoder Simulated Calling Unit function uses two input fields; a 7-bit Simulated Calling Unit Prefix field and a 13-bit field. This allows you to enter the prefix and identity of Ident the calling unit.
Page 420 Chapter 10, Signaling Encoder (AF Generator 2) Nordic Mobile Telephone (NMT) Encoder Nordic Mobile Telephone (NMT) Encoder The NMT Encoder screen is used to create the different signals used to communicate between the Mobile Station (MS), Base Station (BS), and Mobile Telephone Exchange (MTX).
Page 421 Chapter 10, Signaling Encoder (AF Generator 2) Nordic Mobile Telephone (NMT) Encoder Access Channel Number This field defines the channel number for the signal that initiates a call from the MS to the MTX. Valid Entry Range: 1 through 2023 NMT Frames Affected: 3d, 3dTA2, 4b, 4bTA2, 10aAC Operating Considerations This field is only used with the STD900 standard.
Page 422 Chapter 10, Signaling Encoder (AF Generator 2) Nordic Mobile Telephone (NMT) Encoder Table 12 NMT Additional Information Bits Frames Content of Additional Information Digits 1a, 1a', 1a H1H2H3H4H5H6H7H8H9H10 All from Add Info field 1aS, 1a'S, 1a''S H1H2H4H5H6H7H8H9H10 From Add Info field H3 From Bate Save field 1b, 1bTA1,1bTA2 H1H2H3H4H5H6H7 From Add Info field...
Page 423 Chapter 10, Signaling Encoder (AF Generator 2) Nordic Mobile Telephone (NMT) Encoder Alarm Level Low This field sets the lower trigger level for the signal-strength measurement’s alarm for the Phi signal. Valid Entry Range: 0 through F (hex) NMT Frames Affected: 20, 25. Operating Considerations This field is only used with the STD900 standard.
Page 424 Chapter 10, Signaling Encoder (AF Generator 2) Nordic Mobile Telephone (NMT) Encoder Audio Out Audio out coupling selects ac or dc coupling of the encoder to the AUDIO OUT connector when the upper field is set to AFGen2 To Audio Out BS Identity The base station identity field provides the 3-digit hex code that identifies which BS an MTX is communicating with.
Page 425 Chapter 10, Signaling Encoder (AF Generator 2) Nordic Mobile Telephone (NMT) Encoder Calling Channel Number This number setting when initiating a call from the BS to the MS. Valid Entry Range: 1 through 2023 NMT Frames Affected: 1a, 1a’, 1a’’, 1aS, 1a’S, 1a’’S, 1b, 1bS, 2a, 2a’, 2a’’, 2b, 2b’, 2b’’, 2c, 2c’, 2c’’, 2d, 2d’, 2d’’, 2e, 2f, 10a, 10d, 11b.
Page 426 Chapter 10, Signaling Encoder (AF Generator 2) Nordic Mobile Telephone (NMT) Encoder The device-under-test field defines the device you are testing. Valid Entries: MS, BS, MTX NMT Frames Affected: None Operating Considerations This field affects the RF generator and analyzer frequencies used for the NMT TCHAN and RCHAN program commands.
Page 427 Chapter 10, Signaling Encoder (AF Generator 2) Nordic Mobile Telephone (NMT) Encoder Meas Field Strength This field specifies the Phi Signal strength measurement that is sent from the BS to the MTX. Valid Entry Range: 0 through 99 NMT Frames Affected: 26 Mgmt/Maint The management/maintenance field is used to send system status information.
Page 428 Chapter 10, Signaling Encoder (AF Generator 2) Nordic Mobile Telephone (NMT) Encoder Password This field specifies the 3-digit code added to the end of the MSN to prevent unauthorized use of a subscriber number. Valid Entry Range: 000 through FFF (hex) NMT Frames Affected: 10b, 10c, 11a, 12.
Page 429 Chapter 10, Signaling Encoder (AF Generator 2) Nordic Mobile Telephone (NMT) Encoder Standard This NMT system standard for equipment you are testing. When a standard is chosen, the Test Set automatically alters several corresponding parameters. Operating Considerations Each standard affects the following conditions: •...
Page 430 Chapter 10, Signaling Encoder (AF Generator 2) Nordic Mobile Telephone (NMT) Encoder Traffic Area - Main This field specifies the main traffic area code that identifies the base stations used to simultaneously transmit a calling signal to an MS. Valid Entry Range: 0 through FF (hex) NMT Frames Affected: 1a, 1a’, 1a’’, 1aS, 1a’S, 1a’’S, 1b, 1bS, 1bTA1, 2a, 2a’, 2a’’, 2b, 2b’, 2b’’, 2c, 2c’, 2c’’, 2d, 2d’, 2d’’, 2e, 2f, 3a1, 3a2, 3b, 3bTC2, 3c, 3d, 4, 4b, 5a, 5b, 7, 10a, 10aAC, 10b, 10c, 10d, 11a, 11b, 12, 20, 21b, 21c, 22, 30.
Page 431 Chapter 10, Signaling Encoder (AF Generator 2) Nordic Mobile Telephone (NMT) Encoder Traffic Channel (Main) Number This field specifies the main traffic channel used for conversation after communications have been established. Valid Entry Range: 1 through 2023 NMT Frames Affected: 1bTA1, 1bTA2, 2b, 2b’, 2b’’, 3a1, 3a2, 3b, 3bTA2, 3d, 3dTA2, 4, 4TA2, 5a, 5b, 7, 10b, 10c, 11, 11a, 12, 13a, 13b, 14a, 14b, 16, 20, 21b, 21C, 22, 25, 26, 27, 28, 30.
Page 432 Chapter 10, Signaling Encoder (AF Generator 2) Tone Sequence Encoder Tone Sequence Encoder The Tone Sequence Generator outputs sequences of tones of variable frequency, amplitude, and duration. Its signal can be used to modulate the RF Generator, or can be output through the front-panel AUDIO OUT connector. tone-ec.wmf Figure 108 The Tone Sequence Encoder Mode Screen...
Page 433 Chapter 10, Signaling Encoder (AF Generator 2) Tone Sequence Encoder Bursts This field defines the number of sequences output each time is selected. Send This function works only when the field is set to Send Mode Burst FM Coupling This field alters the FM modulator to allow DCFM from internal and external modulation sources.
Page 434 Chapter 10, Signaling Encoder (AF Generator 2) Tone Sequence Encoder Symbol Definition This table specifies three types of information: • Sym, symbol numbers, indicate the hexadecimal number that represents each tone when creating a tone sequence. These numbers cannot be changed. •...
Page 435 Help Screen...
Page 436 Chapter 11, Help Screen Field Descriptions Field Descriptions The HELP screen is used to access tutorial information for a wide variety of instrument functions. After this screen is accessed, push the cursor-control knob to display the help Index. The knob is then used to select the desired topic. Once you have accessed the desired information, you can return to the Help Index by pushing the cursor-control knob.
Page 437 I/O Configure Screen...
Page 438 Field Descriptions ioconfig.wmf Figure 109 The I/O Configure Screen The I/O CONFIGURE screen’s fields are used to specify HP-IB and serial communications settings.(HP 8920As must be equipped with option 003) This screen is accessed by selecting the field (directly below the...
Page 439 This setting is retained when the instrument is turned off. HP-IB Adrs This field is used to display and change the HP-IB address of the Test Set. Operating Considerations The address can be set from 0 to 30 by using the DATA keys, or by pushing and then turning the cursor-control knob.
Page 440 Chapter 12, I/O Configure Screen Field Descriptions Mode This field sets the HP-IB operating mode. is used for “normal” HP- Talk&Lstn IB operation. is used to control external instruments using the Test Set. Control This setting is retained when the instrument is turned off.
Page 441 Disk is used with external disk drives. The Mode field must be set to Control to access the drive. Also, the HP-IB address of the drive must be entered in the External Disk Specification field of the TESTS (External Devices) screen.
Page 442 Chapter 12, I/O Configure Screen Field Descriptions Serial In This field selects the destination of characters received by the Test Set on the serial port. • Inst configures the serial port to connect to an external ASCII terminal or computer to enter IBASIC programs, or to control the Test Set using an external keyboard.
Page 443 Message Screen...
Page 444 Chapter 13, Message Screen Field Descriptions Field Descriptions The MESSAGE screen lists any error or operation messages that have occurred since the instrument was turned on. The type of error and the time it occurred are listed. If one error occurs more than once before a different error is encountered, the number of times it occurred, and when it occurred, are displayed.
Page 445 Oscilloscope Screen...
Page 446 Chapter 14, Oscilloscope Screen Field Descriptions Field Descriptions oscscrn.wmf Figure 110 The Oscilloscope Screen and Menus The OSCILLOSCOPE screen’s controls are arranged by menu. The menus are accessed using the field. The field descriptions are grouped by menu Controls names. Assigning global USER keys to the most-used functions on the menus allows you to access the functions without having to change menus during operation.
Page 447 Chapter 14, Oscilloscope Screen Field Descriptions Oscilloscope Main Menu Fields oscscrn3.wmf Figure 111 Oscilloscope Main Functions Time/div This field selects the horizontal sweep time per division. Operating Considerations The time-per-division is selected from a list of choices. Vert Offset Vertical offset moves the displayed signal above or below the oscilloscope’s fixed centerline.
Page 448 Chapter 14, Oscilloscope Screen Field Descriptions Oscilloscope Marker Menu Fields oscscrn5.wmf Figure 112 Markers on the Oscilloscope How the Oscilloscope Displays Measurements The digital oscilloscope screen is 417 pixels wide. Several measurement samples may be taken for each pixel as a signal is processed (at 100 ns/sample). The number of samples depends on the sweep speed ( ), and can vary from Time/div...
Page 449 Chapter 14, Oscilloscope Screen Field Descriptions Marker Measurements oscscrn2.wmf Figure 113 Reading Measurement Results at the Oscilloscope’s Markers Marker: Lvl This measurement field displays the signal level of the current marker position. Operating Considerations The unit-of-measure for this field is dependent on the source of the signal being measured.
Page 450 Chapter 14, Oscilloscope Screen Field Descriptions Oscilloscope Trigger Menu Fields oscscrn4.wmf Figure 114 Oscilloscope Triggering Internal This field selects the trigger source. • Internal uses the signal being displayed for triggering. • External uses the rear-panel EXT SCOPE TRIGGER INPUT for triggering. This is a TTL level trigger (approximately 2.5 V).
Page 451 Chapter 14, Oscilloscope Screen Field Descriptions Cont/Single This field specifies whether the oscilloscope is continuously triggered ( ), or Cont if it is only triggered each time is selected ( Reset Single Level (div) This control is divided into two fields: The upper field ( ) sets the internal trigger level as a function of vertical 0.00...
Page 452 Chapter 14, Oscilloscope Screen Using the Oscilloscope Using the Oscilloscope Selecting the Oscilloscope’s Input The oscilloscope’s input is determined by the field setting in the AF AF Anl In ANALYZER, TX TEST, or DUPLEX TEST screens. oscscrn1.wmf Figure 115 Oscilloscope Input Indicator Using the Scope To Field field in the AF ANALYZER screen allows you to look at the Scope To...
Page 453 Images are printed using either the front-panel PRINT function (see “Printing a Screen” in volume 1) or the USER key available on some TESTS Print All environment screens. Refer to your HP 11807 software manual for information on how to use your printer to print automated test results.
Page 454 Figure 116 The Printer Configurations Screen NOTE: This screen is displayed on HP 8920As only if your instrument has Option 103. Abort Print Select this field to interrupt the print in progress. FF at End This field can only be controlled programmatically. It is used to specify if you want a form feed at the end of printing.
Page 455 Choices one of those that is listed. Printer Address This field is used to specify the address of an HP-IB printer. This field is only displayed if the field is set to HP-IB. Printer Port...
Page 456 Chapter 15, Print Configure Screen Field Descriptions S:\HP892XX\USRGUIDE\manual\prinscrn.fb...
Page 457 Radio Interface Screen The RADIO INTERFACE screen controls the digital functions of the rear-panel RADIO INTERFACE parallel connector. A functional description of the radio interface, followed by field descriptions and operating instructions is included in this chapter. For more information see chapter 24, "Connector, Key, and Knob and the Programmer’s Guide.
Page 458 Data transfer is asynchronous, meaning that each block of data is transferred after a key is pressed on the Test Set’s front panel, or an HP-IB command is sent. Data transfer is also “half-duplex”, meaning that data input and output cannot occur simultaneously.
Page 459 Chapter 16, Radio Interface Screen Radio Interface Functional Description Audio Source The Test Set has two audio sources, AFGen 1 and AFGen 2. Either or both of these sources can be routed to the OPTION INTERFACE connector. See "Audio Out" on page 574 Audio Analyzer The Test Set’s audio analyzer can be accessed through the OPTION INTERFACE connector.
Page 460 Chapter 16, Radio Interface Screen Field Descriptions Field Descriptions riscrn.wmf Figure 117 The Radio Interface Screen Input Data This field trips the Test Set to latch the data on the parallel data pins that have been designated as inputs. S:\HP892XX\USRGUIDE\manual\radscrn.fb...
Page 461 Operating Considerations The field can be queried directly in an IBASIC or HP-IB program, or it can be monitored with the HP-IB status reporting system. This is done by reading bit 5 of the status byte and then reading bit 13 of the Hardware 1 status register. The Interrupt 1 pin can also be set as the HP-IB SRQ mask.
Page 462 Chapter 16, Radio Interface Screen Field Descriptions I/O Config This field designates which of the 16 parallel data pins will be used as inputs. Pins designated as inputs are pulled high internally. They can be left high for a logic 1 or pulled low for a logic 0.
Page 463 Chapter 16, Radio Interface Screen Using the Radio Interface (Manual Operation) Using the Radio Interface (Manual Operation) Do not connect a voltage source in excess of −0.3 V (for example, −0.4 V) to any Parallel Data CAUTION: pin. Also, do not connect a voltage source that exceeds 5.7 V, unless the logic voltage has been set to a level other than the default.
Page 464 Chapter 16, Radio Interface Screen Using the Radio Interface (Manual Operation) Input Data Line (1 of 16) Output Data Line (1 of 16) Pin 9 Logic Voltage Fixed Ref- 3.16 k 56.2 k Pins 19-34 erence LM 339M Parallel 5.1 V Input Data Out 31.6 k...
Page 465 Chapter 16, Radio Interface Screen Using the Radio Interface (Manual Operation) Inputting Data Data can only be input through parallel data bus lines that are configured as inputs. Data bus lines are configured as inputs by setting the output comparators to their logic-high states (positive output level).
Page 466 Chapter 16, Radio Interface Screen Using the Radio Interface (Manual Operation) Outputting Data Outputting data is accomplished by entering the appropriate hex value in the field, and then selecting the field. Output Data Send Data The output data value can be incremented or decremented by turning the cursor control knob with the field highlighted.
Page 467 Chapter 16, Radio Interface Screen Using the Radio Interface (Manual Operation) Parallel Data Strobe Logic Voltage Strobe POL High/Low Parallel Data Strobe LM 339M Pin 13 Output Data Line 5 µ S Logic Voltage Data Output Output Data (1 of 16) LM 339M Pins 9 - 34 Fixed Ref-...
Page 468 Chapter 16, Radio Interface Screen Using the Radio Interface (Manual Operation) Using Interrupts There are two interrupt lines that, when armed, allow monitoring of interrupt conditions. An interrupt is tripped when a logic low, determined by the same Logic Voltage as described in "Setting the Radio Interface’s Logic Level"...
Page 469 "Setting the Radio Interface’s Logic Level" on page 463. HP-IB Command Summary The HP-IB command mnemonics can be found in the Programmer’s Guide, under Radio Interface. Inputting Data over HP-IB Use the following commands to configure the eight least significant parallel data bus lines as inputs by writing logic 1’s to them.
Page 470 Chapter 16, Radio Interface Screen Using The Radio Interface (Remote Operation) Outputting Data over HP-IB Use one of the following commands to output 1’s to the 8 most significant bits on the parallel data bus. DISP RINT;RINTerface:PARallel:OUTPut 65280 ;SEND (decimal) DISP RINT;RINTerface:PARallel:OUTPut #HFF00;SEND (hex)
Page 471 RF Analyzer Screen...
Page 472 Chapter 17, RF Analyzer Screen Block Diagram Block Diagram Hrh†ˆ…r€r‡Ã9v†ƒyh’Ã6…rh UˆrÃH‚qr AHÃ9r‰vh‡v‚ UYÃA…r„Ã@……‚… 6ˆ‡‚Hhˆhy 6HÃ9rƒ‡u UYÃA…r„ˆrp’ 68ÃGr‰ry UYÃQ‚r… TDI69ÃTIS 9v†‡ TDI69 6AÃA…r„ 98ÃGr‰ry UYÃQ‚r… 8ˆ……r‡ Hrh†ˆ…r€r‡ 0,6$&& UYÃQ…Ãar…‚ Srsr…rpr ar…‚ @YUÃFr’ PPss Dƒˆ‡Ã6‡‡r Dƒˆ‡ÃQ‚…‡ 6ˆ‡‚ÃÃC‚yq DAÃAvy‡r… SAÃDÃÃ6‡ Ãqi !"ÃxC“ SAÃDI Ãqi !Ãqi TU6B@T...
Page 473 Chapter 17, RF Analyzer Screen Field Descriptions Field Descriptions rfascrn.wmf Figure 121 The RF Analyzer Screen AC Level This is the default measurement for this field. The type of measurement listed here is dependent on the settings. AF Anl In See Also AC Level field description, on page 496 AF Anl In field description, on page 101...
Page 474 Chapter 17, RF Analyzer Screen Field Descriptions Ext TX key This field controls a switch at the MIC/ACC connector. Its intended use is to “key” an external transmitter. See Also "MIC/ACC" on page 568 Distn This field displays the percent of distortion for a 1 kHz signal tone. FM Deviation This measurement field displays the frequency deviation between the FM signal and the carrier.
Page 475 Chapter 17, RF Analyzer Screen Field Descriptions IF Filter This field selects the desired IF Filter bandwidth for modulated signals being analyzed. Input Atten Input attenuation sets the amount of input attenuation for the RF IN/OUT and ANT IN connectors. This function controls two settings: •...
Page 476 Chapter 17, RF Analyzer Screen Field Descriptions Input Port This field selects the RF IN/OUT or ANT IN port for making RF measurements. The RF IN/OUT port must be used for making measurements on this TX Power screen. Operating Considerations Maximum signal levels at each port are printed on the front panel.
Page 477 Chapter 17, RF Analyzer Screen Field Descriptions RF Cnt Gate RF counter gate specifies how long the RF counter samples the signal before displaying the frequency. Specifying a shorter gate time may enable you to see frequency fluctuations that might not be seen using a longer gate time. Sensitivity RF Analyzer sensitivity adds about 6 dB of sensitivity for the ANT IN port when is selected.
Page 478 Chapter 17, RF Analyzer Screen Field Descriptions Trying to read a squelched measurement using HP-IB will cause your program to halt until the squelch is either turned down, a measurement is made, or until a program time-out aborts the measurement process.
Page 479 Chapter 17, RF Analyzer Screen Field Descriptions Tune Freq RF Analyzer tune frequency sets the center frequency for the RF signal to be analyzed. See Also Tune Mode field description (this page) Tune Mode This field selects automatic or manual tuning of the RF Analyzer. causes the RF Analyzer to find the signal with the greatest amplitude Auto >-36 dBm, and set the tune frequency for that signal.
Page 480 Chapter 17, RF Analyzer Screen Field Descriptions TX Power Transmitter power measures RF power at the RF IN/OUT port. Operating Considerations Maximum signal levels at each port are printed on the front panel. Only the RF IN/OUT port can be used for measuring TX power on this screen. When the is set to , four dashes (- - - -) appear in place of digits...
Page 481 Chapter 17, RF Analyzer Screen Field Descriptions When alternately making high and low power measurements, always zero the power meter immediately before making the low power measurements to provide the best measurement accuracy.
Page 482 Chapter 17, RF Analyzer Screen Field Descriptions S:\HP892XX\USRGUIDE\manual\rfanscrn.fb...
Page 483 RF Generator Screen...
Page 484 Chapter 18, RF Generator Screen Block Diagram Block Diagram 6€ƒyv‡ˆqr SAÃBrÃA…r„ HvpÃQ…r@€ƒ ' 6ˆ‡‚C‚yq q7€ HC“ PPss SAÃPˆ‡ &$ÃˆT 9ˆƒyr‘ÃPˆ‡ HD8688 Pˆ‡ƒˆ‡ÃQ‚…‡ 6‡‡rÃC‚yq SAÃPˆ‡ÃÃ9ˆƒy PÃÃPss H‚qˆyh‡v‚ Dƒˆ‡ Srh…ÃQhry H‚qÃDÃU‚ AHWƒx AHÃ8‚ˆƒyvt 68ÃÃ98 98ÃAHÃar…‚ 6AÃBrÃ ÃU‚ 6AÃBrÃ ÃA…r„ " xC“...
Page 485 Chapter 18, RF Generator Screen Field Descriptions Field Descriptions rfgscrn.wmf Figure 123 The RF Generator Screen AC Level This measurement displays either rms potential (voltage) or audio power (Watts or dBm). Operating Considerations When the unit-of-measure is changed to measure AF power, the external load resistance must be specified.
Page 486 Chapter 18, RF Generator Screen Field Descriptions AFGen1 Freq This Audio Frequency Generator control sets the frequency for the first audio frequency sinewave generator. AFGen2 Freq This Audio Frequency Generator control sets the frequency for the second audio frequency sinewave generator. It can also be used to set the Function Generator’s frequency when the signaling encoder is used.
Page 487 Chapter 18, RF Generator Screen Field Descriptions AFGen2 To This Audio Frequency Generator control is used to set two values: • The upper field determines whether the AF signal modulates the RF Generator, or is output through the AUDIO OUT connector. •...
Page 488 Chapter 18, RF Generator Screen Field Descriptions Atten Hold Attenuator hold prevents the fixed RF output attenuators from switching in and out, eliminating the loss of the output signal as the level is changed. This function is helpful when making squelch measurements. Operating Considerations When this function is set to , the RF output level is restricted to a range above...
Page 489 Chapter 18, RF Generator Screen Field Descriptions Mod In To This modulation input field defines how an external modulation source is used with the RF Generator. Two fields are used: • The upper field determines whether the rear-panel MODULATION INPUT signal is set for AM or FM modulation of the RF GENERATOR.
Page 490 Chapter 18, RF Generator Screen Field Descriptions SINAD This is the default measurement for this field. Selecting this field displays the following measurement choices: SINAD Distortion SNR (Signal to Noise Ratio) AF Frequency DC Level Current - DC only Operating Considerations This is a priority control field.
Page 491 Chapter 18, RF Generator Screen Field Descriptions TX Freq Error TX Frequency This measurement displays transmitter frequency error or absolute transmitter frequency. See Also Tune Mode field description, on page 351 "Displaying Measurements" on page 57 TX Power Transmitter power measures RF power at the RF IN/OUT port. Operating Considerations Maximum signal levels at each port are printed on the front panel.
Page 492 Chapter 18, RF Generator Screen Field Descriptions S:\HP892XX\USRGUIDE\manual\rfgscrn.fb...
Page 493 RX Test Screen...
Page 494 Chapter 19, RX Test Screen Block Diagram Block Diagram 6€ƒyv‡ˆqr SAÃBrÃA…r„ ' q7€ HC“ SAÃPˆ‡ 9ˆƒyr‘ÃPˆ‡ Pˆ‡ƒˆ‡ÃQ‚…‡ 6‡‡rÃC‚yq SAÃPˆ‡ÃÃ9ˆƒy PÃÃPss 6AÃBrÃ ÃU‚ 6AÃBrÃ ÃA…r„ " xC“ xC“ 6AÃBrÃ!ÃU‚ 6AÃBrÃ!A…r„ xC“ 6ˆqv‚ÃPˆ‡ TDI69 Avy‡r…Ã! Hrh†ˆ…r€r‡†Ã9v†ƒyh’Ã6…rh Avy‡r…Ã 6,1$' $& /HYHO $C“ÃCQA $xC“ÃGQA $) )UHT...
Page 495 Chapter 19, RX Test Screen Field Descriptions Field Descriptions rxscrn.wmf Figure 125 The RX Test Screen NOTE: Since most of the measurements displayed are dependent on different field settings, the settings and values shown in the diagrams use the Test Set’s preset conditions.
Page 496 Chapter 19, RX Test Screen Field Descriptions AC Level This measurement displays either rms potential (voltage) or audio power (Watts or dBm). Operating Considerations When the unit-of-measure is changed to measure AF power, the external load resistance must be specified. (Refer to the Ext Load R field description, on page The input for the ac level measurement on this screen is always the AUDIO IN connectors.
Page 497 Chapter 19, RX Test Screen Field Descriptions AFGen1 To This Audio Frequency Generator control is used to set two values: • The upper field determines whether the AF signal modulates the RF Generator or is out- put through the AUDIO OUT connector. •...
Page 498 Chapter 19, RX Test Screen Field Descriptions Amplitude The amplitude field adjusts the amplitude of the RF Generator. Operating Considerations This is a priority control field. Accessing the RX TEST or TX TEST screen overrides any changes made to this field in other screens. If a microphone is connected, and the amplitude is off, keying the microphone causes the amplitude to turn on to its previous level until the microphone is no longer keyed.
Page 499 Chapter 19, RX Test Screen Field Descriptions Filter 1 and Filter 2 Filters 1 and 2 select a variety of standard and optional filters. Selecting either field lists the choices available for that field. See Also Chapter 5, "AF Analyzer Screen" Output Port Output port selects the desired RF Generator output port.
Page 500 Chapter 19, RX Test Screen Field Descriptions SINAD This measurement field is used to select and display any one of the following measurements: SINAD Distortion SNR (Signal to Noise Ratio) AF Frequency DC Level Current - DC only (requires Current Measurement option) Operating Considerations This is a priority control field.
Page 501 Service Screen NOTE: This screen is used for component-level troubleshooting by the manufacturer. This method of troubleshooting is not currently supported outside of the factory. This screen allows you to monitor individual circuit node measurements and change various MUX and DAC latch settings for isolating faulty modules. To access the SERVICE screen, you must first access the CONFIGURE screen, then select from the...
Page 502 Chapter 20, Service Screen Field Descriptions Field Descriptions Counter Connection This field selects the desired circuit node to connect to the frequency counter. Frequency This measurement field displays the frequency measurement for the circuit node shown in the field. Counter Connection Gate Time This field is used to adjust the frequency counter’s gate time.
Page 503 Chapter 20, Service Screen Field Descriptions RAM Initialize Selecting this field clears all SAVE registers and test programs that may be in RAM and resets all latches to their factory power-up configuration. Operating Considerations If you have saved one or more instrument setups using the SAVE function, using this function will permanently remove them.
Page 504 Chapter 20, Service Screen Field Descriptions S:\HP892XX\USRGUIDE\manual\servscrn.fb...
Page 505 Spectrum Analyzer Screen The SPECTRUM ANALYZER screen’s controls are arranged in four menus. The menus are accessed using the field. The field descriptions are grouped Controls by menu names. Assigning global USER keys to the most-used functions on the menus allows you to access the functions without having to change menus.
Page 506 Chapter 21, Spectrum Analyzer Screen Field Descriptions Field Descriptions NOTE: The Spectrum Analyzer is optional on some Test Set models. sascrn.wmf Figure 126 The Spectrum Analyzer Screen and Menus S:\HP892XX\USRGUIDE\manual\specscrn.fb...
Page 507 Chapter 21, Spectrum Analyzer Screen Field Descriptions Spectrum Analyzer Main Menu Fields sascrn2.wmf Figure 127 Spectrum Analyzer Main functions Center Freq This field sets the tune frequency for the center of the screen. Operating Considerations This field also changes the frequency of the Tracking Generator’s and the RF Analyzer’s center frequency.
Page 508 Chapter 21, Spectrum Analyzer Screen Field Descriptions RF In/Ant This field selects the input port for the analyzer. Operating Considerations Maximum signal levels at each port are printed on the front panel. CAUTION: Connecting a signal of >200 mW to the ANT IN port can cause instrument damage (although internal protection circuits can typically withstand a short-duration signal of 1 or 2 Watts).
Page 509 Chapter 21, Spectrum Analyzer Screen Field Descriptions RF Generator Menu Fields, Fixed Operation sascrn3.wmf Figure 128 Using the Spectrum Analyzer with the RF Generator Amplitude This field sets the amplitude of the RF Generator. Operating Considerations This is a priority control field. Accessing the RX TEST screen overrides the Amplitude setting on this screen.
Page 510 Chapter 21, Spectrum Analyzer Screen Field Descriptions Output Port This field selects the output port for the RF Generator. Operating Considerations Maximum signal levels at each port are printed on the front panel. CAUTION: Applying reverse RF power to the DUPLEX OUT connector can damage the instrument. (A message is displayed when an overpower conditions occurs.) Whenever possible when testing transceivers, use the RF IN/OUT connector to prevent damage from accidental transmitter keying.
Page 511 Chapter 21, Spectrum Analyzer Screen Field Descriptions RF Generator Menu Fields, Tracking Operation sascrn4.wmf Figure 129 Using the Spectrum Analyzer with the Tracking Generator The Tracking Generator performs a frequency sweep operation. The start and stop frequencies are determined by the Main Menu setting.
Page 512 Chapter 21, Spectrum Analyzer Screen Field Descriptions Offset Freq Frequency offset (RF Generator) sets the difference between the instantaneous frequencies of the Tracking Generator and the center frequency of the Spectrum Analyzer. Operating Considerations The offset can be a positive or negative value. When set to zero, the Tracking Generator produces a sweeping signal that matches the Spectrum Analyzer’s tune frequency.
Page 513 Chapter 21, Spectrum Analyzer Screen Field Descriptions Spectrum Analyzer Marker Menu Fields sascrn5.wmf Figure 130 Setting Markers on the Spectrum Analyzer Marker To: • Peak moves the marker to the highest peak and enters the location in the Position field. •...
Page 514 Chapter 21, Spectrum Analyzer Screen Field Descriptions Marker Measurements sascrn1.wmf Figure 131 Reading Measurement Results at the Spectrum Analyzer’s Markers Marker: Freq Marker frequency displays the frequency at the marker’s present position. Marker: Lvl Marker level displays the amplitude at the marker’s present position. Operating Considerations The marker’s level can be displayed in various units of measure.
Page 515 Chapter 21, Spectrum Analyzer Screen Field Descriptions Spectrum Analyzer Auxiliary Menu Fields sascrn6.wmf Figure 132 Spectrum Analyzer Auxiliary Functions Input Atten Input attenuation sets the amount of input attenuation for the RF IN/OUT and ANT IN ports. This field performs two functions: •...
Page 516 Chapter 21, Spectrum Analyzer Screen Field Descriptions Normalize This area performs three display operations: • Save B saves the currently-displayed trace for the A-B operation. • A only provides a continuously-updated display (the “normal” mode of operation). • A-B displays the difference between the trace saved using Save B and the currently displayed trace.
Page 517 Chapter 21, Spectrum Analyzer Screen Field Descriptions No Pk/Avg This field performs two functions: (peak hold) prevents the Spectrum Analyzer from erasing the previous Pk Hold trace each time it sweeps. This causes the traces to ‘build-up’ on the screen until or the MEAS RESET key is selected.
Page 518 Chapter 21, Spectrum Analyzer Screen Using the Spectrum Analyzer Using the Spectrum Analyzer Automatic Calibration During operation, the Spectrum Analyzer pauses for approximately 2 seconds every 5 minutes to recalibrate itself. This does not affect the accuracy of displayed measurements, but does cause a brief interruption of the displayed information during the process.
Page 519 Tests Screen...
Page 520 Tests can be run from memory cards, the Test Set’s internal ROM or RAM, or from an external disk drive. Test programs are written in the HP Instrument BASIC (IBASIC) programming language. For detailed (step-by-step) instructions about using the TESTS screens, see your Radio Test Software’s documentation or the Test Set’s Programmer’s Guide.
Page 521 Chapter 22, Tests Screen Description of the Tests Subsystem Tests Subsystem Screens When you press the TESTS key, you access the main TESTS screen. The other screens of the subsystem are accessed using the CUSTOMIZE TEST PROCEDURE: lists at the bottom of this screen. SET UP TEST SET: TESTS Subsystem Screens •...
Page 522 Chapter 22, Tests Screen TESTS (Main Menu) TESTS (Main Menu) tstmain.wmf Figure 133 The TESTS (Main Menu) Screen Cnfg External Devices Selecting this field displays the TESTS (External Devices) screen. Continue This field is used to restart a paused test. Description This field displays a description of the file chosen in the Select Procedure...
Page 523 Chapter 22, Tests Screen TESTS (Main Menu) Freq Channel Information Selecting this field displays the TESTS (Channel Information) screen. IBASIC IBASIC Cntrl Selecting this field displays the TESTS (IBASIC Controller) screen. Library This field displays the library information of the file chosen in the Select field.
Page 524 Chapter 22, Tests Screen TESTS (Main Menu) Proc Save/Delete Procedure Selecting this field displays the TESTS (Save/Delete Procedure) screen. Program This field displays program information for the file chosen in the Select field. Procedure Filename: Run Test Selecting this field loads and runs the test chosen in the Select Procedure field.
Page 525 Chapter 22, Tests Screen TESTS (Channel Information) TESTS (Channel Information) tstcinfo.wmf Figure 134 The TESTS (Channel Information) Screen This screen displays the channel frequencies to be tested.
Page 526 Chan# screen). When the cellular radio channel number is entered, the HP 11807A software automatically sets the channel frequencies when testing. You do not need to enter the RX and TX frequencies because they correspond directly to the channel numbers.
Page 527 NOTE: The tests you select determine the parameters that are required. Your radio test documentation provides details if you are using HP 11807 software. Print All This field allows you to print the Test Set’s screen image.
Page 528 The order of tests is set up by selecting one or more tests from the complete list of available tests (such as selecting a subset of an entire HP 11807A package). The TESTS (Order of Tests) menu lets you select the radio tests you want to perform and the order in which the tests are done.
Page 529 Chapter 22, Tests Screen TESTS (Order of Tests) Delet Stp This field allows you to delete a step from the test list at the bottom of the screen. Insrt Stp This field allows you to enter a step in the test list at the bottom of the screen. Operating Considerations When inserting a new test, you must select the where you want to insert a...
Page 530 ( ). (Pass/Fail limits None are sometimes referred to as specifications.) NOTE: The tests you select determine the specifications that are required. The HP 11807 documentation provides details if you are using HP 11807 software. S:\HP892XX\USRGUIDE\manual\testscrn.fb...
Page 531 Chapter 22, Tests Screen TESTS (Pass/Fail Limits) Check This field is used to select whether the test will verify only upper, only lower, both, or none of the specified limits. Operating Considerations Selecting both upper and lower limits increases test time, but may be required for some tests.
Page 532 Chapter 22, Tests Screen TESTS (Save/Delete Procedure) TESTS (Save/Delete Procedure) tstsvdel.wmf Figure 138 The TESTS (Save/Delete Procedure) Screen After selecting a test sequence and defining the appropriate specifications, parameters, frequencies, and system configuration, you can save all that information as a procedure file for later use. This screen is also used to delete procedures.
Page 533 Other IBASIC programs may not require an associated library file. Library files contain all of the channel, parameter, and test name information used with the code file. If an HP 11807 memory card is catalogued, the library file is preceded by a lower-case l.
Page 534 A procedure file is not a directly-executable file for HP 11807 tests; it requires the code and library files to be present before running. To save a file to an external disk drive, you must enter the drive’s HP-IB address into the...
Page 535 Chapter 22, Tests Screen TESTS (Execution Conditions) TESTS (Execution Conditions) tstexec.wmf Figure 139 The TESTS (Execution Conditions) Screen The TESTS (Execution Conditions) screen determines how tests are run.
Page 536 Chapter 22, Tests Screen TESTS (Execution Conditions) Autostart Test Procedure on Power-Up When set to , this field automatically loads and runs the specified procedure whenever the Test Set is turned on. If this field is set to or the specified procedure cannot be loaded for any reason (such as, memory card not inserted, disk drive not connected), the Test Set will default to its normal power-on state.
Page 537 Chapter 22, Tests Screen TESTS (Execution Conditions) Output Results For This field selects which test results are output. The underlined entry is the active choice. • All outputs all test results on to the location selected in the Output Results To: field.
Page 538 Most external devices use the HP-IB port for control. A serial printer can be connected to the serial port for printing test results. NOTE: HP-IB Mode. The Mode field on the I/O CONFIGURE screen must be set to Control to access connected HP-IB instruments. S:\HP892XX\USRGUIDE\manual\testscrn.fb...
Page 539 Chapter 22, Tests Screen TESTS (External Devices) Addr This field is used to enter the instrument’s remote address. For HP-IB instruments, enter the full 3-digit address (such as 704). Calling Name field is used to enter the instrument’s function (in upper-case Calling Name letters).
Page 540 Chapter 22, Tests Screen TESTS (External Devices) Inst# field lists the number of external devices that are configured for the Inst# tests in the current procedure. Main Menu Selecting this field returns you to the TESTS (Main Menu) screen. Model This field is used to enter the instrument’s model number.
Page 541 Chapter 22, Tests Screen TESTS (Printer Setup) TESTS (Printer Setup) tstprint.wmf Figure 141 The TESTS (Printer Setup) Screen The TESTS (Printer Setup) screen determines how tests are run. Continue This field is used to restart a paused test. FF at End: This field can only be controlled programmatically.
Page 542 Chapter 22, Tests Screen TESTS (Printer Setup) Lines/Page: This field is used to specify how many lines are printed per page. Main Menu Selecting this field returns you to the TESTS (Main Menu) screen. Model: This field is used to specify the type of printer used. If your printer is not listed in menu when you select this field, configure your printer to emulate Choices one of those that is listed.
Page 543 Chapter 22, Tests Screen TESTS (Printer Setup) Printer Address: This field is used to specify the address of an HP-IB printer. This field is only displayed if the field is set to HP-IB. Printer Port: Printer Port: This field is used to select the port your printer is connected to.
Page 544 Chapter 22, Tests Screen TESTS (IBASIC Controller) TESTS (IBASIC Controller) tstibasc.wmf Figure 142 The TESTS (IBASIC Controller) Screen The IBASIC controller is used to run IBASIC programs. This screen is also used as a stand-alone IBASIC computer. See the Instrument BASIC documentation for information about writing your own tests for the Test Set.
Page 545 Chapter 22, Tests Screen TESTS (IBASIC Controller) Clr Scr This field is used to clear the IBASIC controller screen. Continue This field is used to restart a paused test. Main Menu Selecting this field returns you to the TESTS (Main Menu) screen. Selecting this field runs the IBASIC program.
Page 546 Chapter 22, Tests Screen ROM Programs ROM Programs Using the Signal Strength Meter sigmeter.wmf Figure 143 The Signal Strength Meter Screen The Signal Strength Meter is accessed by loading and running the LVL_MTR program. 1. Select the TESTS (Main Menu) screen. 2.
Page 547 Chapter 22, Tests Screen ROM Programs Securing a Test Procedure The password option for securing a test procedure is accessed by loading and running the ROM program. This program is accessed by running the SECURE_IT program. IB_UTIL The password option for securing a test procedure is accessed by loading and running the ROM program.
Page 548 Chapter 22, Tests Screen ROM Programs S:\HP892XX\USRGUIDE\manual\testscrn.fb...
Page 549 TX Test Screen...
Page 550 Chapter 23, TX Test Screen Block Diagram Block Diagram Dƒˆ‡ÃQ‚…‡ DAÃAvy‡r… SAÃDÃÃ6‡ !"ÃxC“ 6IUÃDI TU6B@T TU6B@T SAÃDI CvtuÃQ‚r… 6‡‡rˆh‡‚… UˆrÃH‚qr UˆrÃA…r„ $ 6ˆ‡‚ÃÃHhˆhy HC“ UYÃQ‚r… 6AÃ6yÃD Hrh†ˆ…r€r‡ 6ˆ‡‚ÃÃHhˆhy UYÃQ…Ãar…‚ Srsr…rpr ar…‚ AHÃ9r€‚q Avy‡r…Ã Avy‡r…Ã! 6HÃ9r€‚q $C“ÃGQA $C“ÃCQA TT7Ã9r€‚q A…‚€Ã6V9DPÃDI 6ˆqv‚ÃDI A…‚€ÃShqv‚ÃD‡r…shpr Shqv‚ÃD‡...
Page 551 Chapter 23, TX Test Screen Field Descriptions Field Descriptions txscrn.wmf Figure 145 The TX Test Screen...
Page 552 Chapter 23, TX Test Screen Field Descriptions AF Anl In Audio Frequency Analyzer input selects the input for the analyzer. When selected, this field displays a list of choices. Signals can be analyzed from three different types of inputs: • The output of the AM, FM, or SSB demodulators.
Page 553 SNR (Signal to Noise Ratio) AF Frequency DC Level Current - DC only (HP 8920A requires Current Measurement option) Operating Considerations This is a priority control field. Accessing the RX TEST or TX TEST screen overrides any changes made to this field in other screens.
Page 554 Chapter 23, TX Test Screen Field Descriptions AFGen1 Freq This Audio Frequency Generator control sets the frequency for the first audio frequency sinewave generator. AFGen1 Lvl This Audio Frequency Generator control sets the level out the AUDIO OUT connector in volts rms (across a low-impedance output), or in mW, W, or dBm across a 600-ohm load (mW is selected by pressing [SHIFT], [ENTER]).
Page 555 Chapter 23, TX Test Screen Field Descriptions Detector This setting selects the type of detector used when measuring and displaying AF signal levels. Detector Types • RMS displays the RMS value of signals. • RMS*SQRT2 displays the RMS value of a signal multiplied by •...
Page 556 Chapter 23, TX Test Screen Field Descriptions Distn This field displays the percent of distortion. The Distortion measurement is only for a 1 kHz signaling tone. Ext TX Key This field controls a switch at the MIC/ACC connector. Its intended use is to “key”...
Page 557 Chapter 23, TX Test Screen Field Descriptions Input Port This field selects the RF IN/OUT or ANT IN port for making RF measurements. The RF IN/OUT port must be used for making measurements on this TX Power screen. Operating Considerations Maximum signal levels at each port are printed on the front panel.
Page 558 Chapter 23, TX Test Screen Field Descriptions SINAD This field is only visible when SINAD is selected from the AF Freq field on the display area of the TX TEST screen. This field displays the measured SINAD of the input signal. Tune Freq RF Analyzer tune frequency sets the center frequency for the RF signal to be analyzed.
Page 559 Chapter 23, TX Test Screen Field Descriptions TX Freq Error, TX Frequency This measurement area is used to display transmitter frequency error or transmitter frequency. See Also Tune Mode field description (this page) TX Power Transmitter power measures RF power at the RF IN/OUT port. Operating Considerations Maximum signal levels at each port are printed on the front panel.
Page 560 Chapter 23, TX Test Screen Field Descriptions TX Pwr Zero The transmitter power zero function establishes a 0.0000 W reference for measuring RF power at the RF IN/OUT port. CAUTION: RF power must not be applied while zeroing. Set the RF GENERATOR screen Amplitude field to off to prevent internal cross-coupling into the power detector while zeroing Operating Considerations When power is applied to the RF IN/OUT connector, the temperature of the...
Page 561 Connector, Key, and Knob Descriptions...
Page 562 Chapter 24, Connector, Key, and Knob Descriptions Connector Descriptions Connector Descriptions ANT IN ≤ The antenna input is used for analyzing low-power RF signals ( 200 mWatts), and is typically used for off-the-air measurements. This port can be selected in the TX TEST, DUPLEX TEST, RF ANALYZER, or SPECTRUM ANALYZER screens.
Page 563 Chapter 24, Connector, Key, and Knob Descriptions Connector Descriptions AUDIO IN Two connectors are used to input audio signals to the AF Analyzer: • HI is the main audio signal input connection. • LO is used for the audio signal reference. Three choices are available using the AF AN- ALYZER screen’s Audio In Lo field: •...
Page 564 Chapter 24, Connector, Key, and Knob Descriptions Connector Descriptions AUDIO MONITOR OUTPUT This connector provides an external output from various tap points in the AF Analyzer. Operating Considerations field in the AF ANALYZER screen determines the source of this Scope To signal.
Page 565 Examples of this type of monitor include - Mitsubishi Diamond Scan, NEC 3D, Leading Edge CMC-141M, and Sony CPD-1302. DC CURRENT MEASUREMENT This connector is optional on the HP 8920A. These connectors are used in series with a DC supply and load to provide a 0 to 10 amp DC current meter.
Page 566 The male counterpart to this connector is included in the Connector Kit accessory. ( See "Accessories" on page 589 The following HP parts can also be ordered to assemble the male counterpart to this connector: Connector housing: 1251-4782 (1 required)
Page 567 Chapter 24, Connector, Key, and Knob Descriptions Connector Descriptions DUPLEX OUT This connection is an output for the RF Generator and Tracking Generator. Operating Considerations Ω Output impedance = 50 The RF Generator’s output is selected in the field. This field is Output Port available in the RX TEST, DUPLEX TEST, RF GENERATOR, and SPECTRUM ANALYZER screens.
Page 568 Chapter 24, Connector, Key, and Knob Descriptions Connector Descriptions HP-IB This connector is optional on the HP 8920A. This connector allows communication between the Test Set and other instruments or computers using the Hewlett-Packard Interface Bus (HP-IB). See Also Chapter 12, "I/O Configure Screen"...
Page 569 Chapter 24, Connector, Key, and Knob Descriptions Connector Descriptions To Use the Microphone To modulate the RF Generator using the optional microphone (HP part number 08920-61059): 1. Connect the microphone to the MIC/ACC connector. 2. Access the RF GENERATOR screen.
Page 570 Chapter 24, Connector, Key, and Knob Descriptions Connector Descriptions mic-con.wmf Figure 146 MIC/ACC Connections See Also Chapter 18, "RF Generator Screen" Chapter 7, "Configure Screen" Chapter 17, "RF Analyzer Screen" S:\HP892XX\USRGUIDE\manual\connkeys.fb...
Page 571 FM operation. Parallel Port This port is optional on the HP 8920A. This port is used with printers requiring a parallel interface when printing screen images or test results. Set the...
Page 572 Chapter 24, Connector, Key, and Knob Descriptions Connector Descriptions 1. nStrobe 2. Data 1 (Least Significant Bit) 3. Data 2 4. Data 3 5. Data 4 6. Data 5 7. Data 6 8. Data 7 9. Data 8 (Most Significant Bit) 10.
Page 573 Chapter 24, Connector, Key, and Knob Descriptions Connector Descriptions RADIO INTERFACE This connector is optional on all Test Sets. This connector provides parallel communications between the Test Set and external radio equipment. The connector provides a 16-line parallel digital interface that you can configure as inputs, outputs, or a combination of inputs and outputs.
Page 574 Chapter 24, Connector, Key, and Knob Descriptions Connector Descriptions The pin numbers for the radio interface connector are listed on the connector and in figure 147 on page 573. Pin assignments are as follows: 1. GND 2. No Connection 3. Audio Out •...
Page 575 The status of the interrupt lines can be read from the RADIO INTERFACE screen or by an HP-IB or IBASIC program. Al- so, one of the interrupts can be designated as the HP-IB service request (SRQ) in- dicator.
Page 576 Chapter 24, Connector, Key, and Knob Descriptions Connector Descriptions 15. Parallel Data In/Out • You can designate these pins as outputs or inputs with the I/O CONFIG field of the RADIO INTERFACE screen. Pins designated as inputs are pulled high by the Test Set.
Page 577 RJ-11 Connectors. RJ-11 cables and adapters can be wired several ways. If you buy a cable or adapter other than the HP parts listed, verify the connections for the pins indicated in the following table before connecting cables to the instruments.
Page 578 Chapter 24, Connector, Key, and Knob Descriptions Connector Descriptions The following table lists connections for the primary serial port (address 9). When using both ports at the same time, you need to locate or fabricate an adapter to provide the necessary connections. Test Set RJ-11 Terminal/PC Terminal/PC...
Page 579 Chapter 24, Connector, Key, and Knob Descriptions Connector Descriptions 10 MHz REF INPUT This connection allows you to input an external reference. Operating Considerations Input frequency = 1, 2, 5, or 10 MHz Input level >0.15 V rms Ω Input impedance approximately 50 When a valid signal is applied to the 10 MHz REF INPUT, the Test Set automatically switches from internal to external reference.
Page 580 Chapter 24, Connector, Key, and Knob Descriptions Key Descriptions Key Descriptions DATA Keys The DATA keys have four main uses: • The [0] to [9], [ . ], [+/-], and A to F keys are for entering and changing values. •...
Page 581 Chapter 24, Connector, Key, and Knob Descriptions Key Descriptions DATA FUNCTIONS Keys [INCR ³10], [INCR SET], and [INCR ×10] are used to change the increment or decrement a value when changing field values. • Up-arrow and down-arrow keys increment or decrement field values. These keys are also used to select alternate field entries without displaying the Choices menu used by some fields.
Page 582 Chapter 24, Connector, Key, and Knob Descriptions Key Descriptions INSTRUMENT STATE Keys [LOCAL] returns the instrument to manual control after HP-IB control is used. • [RECALL] lists any instrument setups that were saved. • [MEAS RESET] clears the measurement “history” for all of the instrument’s measure- ment algorithms (such as the averaging function) to restart all measurements that are in progress.
Page 583 Chapter 24, Connector, Key, and Knob Descriptions Key Descriptions Miscellaneous Keys and Buttons • [SHIFT] is used to select the blue-labeled functions listed above some keys (such as PRINT, CONFIG, RELEASE, EEX and so forth). • [CANCEL] is used to cancel an entry in progress, or to stop a running IBASIC program. For example, if you press [RECALL] to recall an instrument setup, and then decide not to recall a setting, pressing [CANCEL] exits the recall procedure.
Page 584 Chapter 24, Connector, Key, and Knob Descriptions Knob Descriptions Knob Descriptions • CURSOR CONTROL has three functions: 1. Moving the cursor. 2. Selecting fields, screens, and settings from a list of choices. 3. Changing numeric field values. • VOLUME controls the speaker volume for monitoring the AF Analyzer’s selected in- put.
Page 585 Modifications, Accessories, Manuals, Support...
Page 586 Hardware Upgrades and Modifications You can install several options in your Test Set or have Hewlett-Packard install them for you. If you want HP to install the options, contact the nearest regional sales office listed at the end of this chapter.
Page 587 Option 102: Spectrum Analyzer with Tracking Generator Option 103: HP-IB/RS-232/Parallel Port/DC Current Measurement a. This option reduces the maximum input power of the HP 8920A from 60 watts to 2.4 watts. It cannot be ordered with Option 008 or H08.
Page 588 Chapter 25, Modifications, Accessories, Manuals, Support Modifications Firmware Upgrades Table 16 Firmware Upgrades Description HP 8920A Operating System and Signaling ROMs Option 004 Tone/Digital Signaling. S:\HP892XX\USRGUIDE\manual\accessor.fb...
Page 589 DC Power Connector Housing (Qty 1) 1251-4782 DC Power Connector Contacts 1252-0385 (Qty 2) System Rack Mount Flange Kit (Option 908) 5061-4846 Rack mount kit for HP 8920D or 08921-61037 HP 8921D Padded Carrying Case 1540-1130 Hardshell Transit Case 08920-90033 Passive Oscilloscope Probe HP 10435A (1 MΩ/7.5pF 10:1)
Page 590 HP 85701A 256 KByte OTP Memory Card HP 85703A 512 KByte OTP Memory Card HP 85706A Allows rack mounting of Cellular Adapter (example: HP 83201A) to HP 8920A. SRAM = Static Random Access Memory OTP = One Time Programmable (PROM). S:\HP892XX\USRGUIDE\manual\accessor.fb...
Page 591 Chapter 25, Modifications, Accessories, Manuals, Support Accessories External Monitor The CRT’s Video Output drives a multisync monitor at 19.2 kHz (analog). Examples of this type of monitor include the Electrohome ECM 1410-DMS 14-inch color monitor and the EVM 1242-P4VID 12-inch monochrome monitor.
Page 592 Table 18 Manuals Description Language Option HP 8920A Quick Reference Manual English 08920-90010 Quick Reference Card English 08920-90014 HP 8920 User’s Guide English 08920-90203 Instrument BASIC Language Reference English E2083-90000 Programmer’s Guide English 08920-90204 Assembly Level Repair Manual English 08920-90168...
Page 593 Chapter 25, Modifications, Accessories, Manuals, Support Accessories Table 18 Manuals (Continued) Description Language Option HP 8920A Applications Handbook Korean 08920-90145 Quick Reference Manual Finnish 08920-90039 Shipped inside instrument impact cover Each non-English Quick Reference Manual includes a Quick Reference Card, and a Quick Start Label.
Page 594 System Support Tests (frequency scanning, cable fault location, field strength, intermodula- tion products programs). a. HP 8920A requires Option 004 Tone/Digital Signaling b. Requires an HP 83201A Dual Mode Cellular Adapter c. Requires options 1013, 004, 005, 013, 050, and the HP 89201A to perform the TDMA tests. S:\HP892XX\USRGUIDE\manual\accessor.fb...
Page 595 Chapter 25, Modifications, Accessories, Manuals, Support Accessories Power Cables Plug Descriptions HP Part # Plug Type Cable Descriptions male/female (cable &plug) Straight/Straight 8120-1689 79 inches, mint gray 79 inches, Straight/90° 8120-1692 mint gray Used in the following locations Afghanistan, Albania, Algeria, Angola, Armenia, Austria, Azerbaijan, Azores...
Page 596 Chapter 25, Modifications, Accessories, Manuals, Support Accessories Plug Descriptions HP Part # Plug Type Cable Descriptions male/female (cable &plug) Straight/Straight 8120-0698 90 inches, black Used in the following locations Peru Plug Descriptions HP Part # Plug Type Cable Descriptions male/female (cable &plug)
Page 597 Chapter 25, Modifications, Accessories, Manuals, Support Accessories Plug Descriptions HP Part # Plug Type Cable Descriptions male/female (cable &plug) Straight/Straight 8120-1378 90 inches, jade gray 125V Straight/90° 8120-6177 90 inches, jade gray Straight/Straight 8120-1751 90 inches, jade gray Used in the following locations...
Page 598 Chapter 25, Modifications, Accessories, Manuals, Support Accessories Plug Descriptions HP Part # Plug Type Cable Descriptions male/female (cable &plug) Straight/Straight 8120-4753 90 inches, dark JIS C 8303, 100 V Straight/90° 8120-4754 gray 90 inches, dark gray Used in the following locations...
Page 599 Chapter 25, Modifications, Accessories, Manuals, Support Accessories Plug Descriptions HP Part # Plug Type Cable Descriptions male/female (cable &plug) Straight/Straight 8120-4211 79 inches, mint gray Straight/90° 8120-4600 79 inches, mint gray Used in the following locations Botswana India Lesotho Malawi...
Page 600 Chapter 25, Modifications, Accessories, Manuals, Support Accessories Plug Descriptions HP Part # (cable& Plug Type (Male) Cable Descriptions male/female plug) 90°/Straight 90°/ 8120-1351 90 inches, mint gray 90° 8120-1703 inches, mint gray Used in the following locations Bahrain, British Indian Ocean Territories, Brunei...
Page 601 Chapter 25, Modifications, Accessories, Manuals, Support Accessories Plug Descriptions HP Part # Plug Type Cable Descriptions male/female (cable &plug) Straight/Straight 8120-1369 79 inches, gray Straight/90° 8120-0696 80 inches, gray Used in the following locations Argentina, Australia China (People’s Republic) New Zealand...
Page 602 602 Customer Training Hewlett-Packard offers customers a variety of training materials and classes that explain the theory and applications of many HP products. Contact your HP regional sales office to arrange training for you or your group. Table 20...
Page 603 Chapter 25, Modifications, Accessories, Manuals, Support HP Support for Your Instrument Table 20 Regional Sales Offices Asia Japan International Sales Branch Head- Sales and Service Hewlett-Packard Japan, Ltd. quarters Hewlett-Packard Asia Ltd. Measurement Assistance Center Sales and Service 22-30/F Peregrine Tower 9-1, Takakura-Cho, Hachioji-Shi Hewlett-Packard S.A.
Page 604 Chapter 25, Modifications, Accessories, Manuals, Support HP Support for Your Instrument S:\HP892XX\USRGUIDE\manual\accessor.fb...
Page 605 Error Messages...
Page 606 HP 8920A, HP 8920B, or HP 8921A User’s Guides • HP 8920A, HP 8920B, or HP 8921A Programmer’s Guide • HP 8920A, HP 8920B, or HP 8921 Assembly Level Repair Manual • HP Instrument BASIC User’s Handbook: • HP 8920A or HP 8921A: HP Instrument BASIC Users Handbook (HP P/N E2083-90601) •...
Page 607 Error Messages Positive Numbered Error Messages Positive numbered error messages are generally associated with IBASIC. Refer to the HP Instrument BASIC User’s Handbook for information on IBASIC error messages. Positive numbered error messages take the form: ERROR XX For example: •...
Page 608 Standard Commands for Programmable Instruments (SCPI). For more information on SCPI, order the following book, A Beginner’s Guide to SCPI Addison-Wesley Publishing Company ISBN 0-201-56350-9 HP P/N 5010-7166 or contact, Fred Bode, Executive Director SCPI Consortium 8380 Hercules Drive, Suite P3...
Page 609 IBASIC Error Messages IBASIC Error Messages are associated with IBASIC operation. IBASIC error messages can have both positive and negative numbers. Refer to the HP Instrument BASIC User’s Handbook for information on positive numbered error messages. Refer to the HP-IB Error Messages section of the Programmer’s Guide for information on negative numbered error...
Page 610 Error Messages HP-IB Error Messages HP-IB Error Messages are associated with HP-IB operation. Refer to the Programmers Guide for information on HP-IB error messages. HP-IB error messages take the form: HP-IB Error: -XX or HP-IB Error For example: HP-IB Error: -410 Query INTERRUPTED.
Page 611 Error Messages Text Only Error Messages Text only error messages are generally associated with manual operation of the Test Set. This manual contains information on text only error messages. Text only error messages can also be displayed while running the Test Set’s built-in diagnostic or calibration utility programs.
Page 612 HP-IB command is received. Many of the messages are displayed on the MESSAGE screen until the instrument is turned off.
Page 613 Error Messages Non-Recoverable Firmware Error The non-recoverable firmware error is very important. It appears when an unanticipated event occurs that the Test Set’s firmware cannot handle. The message appears in the center of the Test Set’s display and (except for the two lines in the second paragraph) has the form: Non-recoverable firmware error.
Page 614 You selected a function that requires optional hardware that is not present for example, selecting TDMA TEST from the To Screen menu when you do not have an HP 83201A or HP 83201B Cellular Adapter connected to the Test Set.
Page 615 SPEC ANL (Spectrum Analyzer) Option 102 - SpectrumAnalyzer LVL_MTR (signal strength meter) A16 Receiver Assembly ROM Program TDMA TEST HP 83201A/B Cellular Adapter PDC TEST, PHP TEST HP 83201B Cellular Adapter TDMA HP 83204 Cellular Adapter HP 83236B Interface CDMA TEST...
Page 616 Error Messages Turn off either AM or FM settings. You tried to create simultaneous AM and FM (using any combination of AFGen1, AFGen2, and the Mod In To field). The Test Set does not provide simultaneous AM and FM. Squelch interrupt overflow. Press MEAS RESET. The Test Set temporarily interrupts audio measurements when squelch is first broken to prevent internal switching transients from influencing measurements (except when using the OSCILLOSCOPE, SPECTRUM ANALYZER, DECODER, or SERVICE screens).
Page 617 Error Messages One or more self tests failed. Error code: XXXX An instrument failure was detected when the Test Set was turned on. (For example, having a stuck front-panel key during turn on.) The numbered error message corresponds to a binary-weighted group of errors listed in the *TST Common Command description in the Programmer’s Guide.
Page 618 Error Messages S:\HP892XX\USRGUIDE\manual\errormsg.fb...
Page 619 Index - - - - Symbols Numerics meaning of, ACP level measurement, (Gen)-(Anl) 10 MHz REF INPUT connector Configure screen, description, meaning of, AF frequency, 10 MHz REF OUTPUT connector meaning of, FM deviation, description, meaning of, squelch, 114.3 MHz IF OUT connector meaning of, TX frequency error, description, meaning of, TX power measurement,...
Page 620 DC Level, 104, RF Generator screen, HP-IB, external devices, De-Emp Gain, RX Test screen, HP-IB, printer, 455, De-emphasis, ac level HP-IB, test set, 439, Detector, measurement, key, Distn, peak detector, pager, Ext Load R, AC, access channel, Address Qualifier...
Page 621 Index TACS mode, AFGen1 Freq Signaling Decoder screen, CDCSS Adjacent Channel Power screen, mode, Analog Meas screen, disabling, Signaling Decoder screen, Digi Page Duplex Test screen, internal speaker, mode, RF Generator screen, alert order, Signaling Decoder screen, DTMF RX Test screen, All Chans? mode, TX Test screen,...
Page 622 Index view of, AF Freq, sensitivity, 477, AMPS-TACS AFGen1 Freq, Antenna In control channel decoder, AFGen1 To, Configure screen, forward control channel, Amplitude, Area # forward voice channel, De-Emphasis, Signaling Encoder screen, NMT mode, radio standard, Detector, reverse control channel, Filter 1, Area 1 reverse voice channel,...
Page 623 Index input, RF analyzer, 94, mode, AVG, 69, input, spectrum analyzer, Signaling Encoder screen, EDACS Avg 1-100 manual control, 94, 475, mode, Spectrum Analyzer screen, attenuator Signaling Encoder screen, Func Gen decoder interference, 107, mode, input, 94, 475, Signaling Encoder screen, LTR mode, oscilloscope interference, 107, attenuator hold, 345, 488, Signaling Encoder screen, NAMP-...
Page 624 Index information, 360, NTAC mode, LTR data rate, B/I Delay (FOCC) message, Signaling Encoder screen, AMPS- NMT data rate, TACS mode, parity, 279, 360, 362, Signaling Encoder screen, NAMP- serial data word, NTAC mode, specifying patter to display, backspace key, sync word, bandwidth triggering,...
Page 625 Index Release, RECCW C, SAT, RECCW D, cables SCM, RECCW E, power, SID, RVCBSChal, calibration System Type, RVCOrd, spectrum analyzer, TX Freq Error, RVCOrdCon, Call Bit screen TX Power, UniqChCon, Access annunciator, view of, decoding error message, CANCEL key, Active, view of, measurement display, 129, card Active annunciator,...
Page 626 Index TOC Time, measuring, radio interface inputs, view of, ratio, serial port, cellular adapter channel standard test set, connectors, AMPS (MS, LS), Configure screen cellular telephone, ETACS (MS, LS), (Gen)-(Anl), Center Freq JTACS (MS, LS), Antenna In, Spectrum Analyzer screen, LTR800/900 (MS, LS), Base Freq, center frequency...
Page 627 Control I/O connector meaning of, squelch, DUPLEX OUT, description, meaning of, TX power measurement, EXT SCOPE TRIGGER, Controls 58, 91, 97, 112, 352, 480, 491, HP-IB, Oscilloscope screen, Data IQ RF IN, Spectrum Analyzer screen, Signaling Decoder screen, EDACS MIC/ACC, counter...
Page 628 Index mode, description, filter, description, Signaling Encoder screen, Digi Page DC Level gain, mode, AF Analyzer screen, 104, input level, 273, 282, 291, 302, Signaling Encoder screen, EDACS Duplex Test screen, off for digital paging, mode, RF Analyzer screen, off for NMT decoder, Signaling Encoder screen, LTR mode, RF Generator screen, selecting, 104, 346,...
Page 629 Index AF Analyzer functional block, Display outputting, Duplex Test functional block, Call Control screen, DTMF Sequence encoder mode RF Analyzer functional block, Display Page AFGen2 To, RF Generator functional block, Signaling Decoder screen, Digi Page Audio Out, RX Test functional block, mode, Bursts, TX Test functional block,...
Page 630 Index functional block diagram, CDSCC, IF Filter, data rate, EDACS decoder mode Input Port, digital paging, AF Anl In, Output Port, DTMF, Arm Meas, RF Gen Freq, EDACS, Data, SINAD, function generator, Input Level, SNR, LTR, Polarity, Tune Freq, MPT 1327, Radio/Repeater, Tune Mode, NAMPS-NTACS,...
Page 631 Index Exit Status Firmware revision number Signaling Decoder screen, NMT mode, Configure screen, FCC mobile station control word 2 First Frame order, exponents Signaling Decoder screen, NMT mode, voice channel assignment, entering numbers, FCC mobile station control, word 1, Ext Load R, first word of called address, FF at End AF Analyzer screen,...
Page 632 Index FOCC DTMF, high tone, AMPS-TACS/NAMPS-NTACS, Freq DTMF, low, 279, data rate, Signaling Decoder screen, Tone Seq Function filler data, AMPS-TACS/NAMPS- mode, Signaling Encoder screen, Digi Page NTACS, Freq (marker) mode, menu, Spectrum Analyzer screen, function generator outputting, Freq Channel Information waveform, FOCC message Tests (Main Menu) screen,...
Page 633 Index 235, frequency, 350, output port, 350, 499, 510, gain reference frequency, automatic control, generator, tracking between ANT IN and device-under- amplitude, test, frequency, between DUPLEX OUT and device- frequency offset, under-test, output port, between RF IN/OUT and device-un- RF offset, der-test, sweep, de-emphasis,...
Page 634 HP 11807A software, running, mobile station subscriber, HP 8920A Memory Card Part Numbers, mobile telephone exchange, octal code for radio, HP 8920B Memory Card Part Numbers, subscriber identity security challenge, HP-IB subscriber identity security response,...
Page 635 Index IF Filter oscilloscope interference, 107, interactions Duplex Test screen, Input Data between fields, RF Analyzer screen, Radio Interface screen, between screens, TX Test screen, Input Gain encoder/decoder, AMPS-TACS/ IF filter bandwidth AF Analyzer screen, NAMPS-NTACS, 276, selecting, 349, 475, input impedance endcoder and decoder radio standards, If Unit-Under-Test Fails...
Page 636 Index CURSOR CONTROL, SQUELCH, JTACS k1 through k5, VOLUME, radio standard, k1’ through k3’, simulated system, key sequences for front-panel controls, 86, keyboard external, keying effect on amplitude, 345, 487, 498, 509, external transmitter, 94, 348, 474, keys $Leftarrow$, ADRS, backspace, CANCEL, CONFIG,...
Page 637 Index Signaling Encoder screen, EDACS ID 1, mode, ID 2, Latch loss LTR message, Service screen, between ANT IN and device-under- Polarity, leakage test, Send, ACP measurement, between DUPLEX OUT and device- Send Mode, left arrow key, under-test, Standard, level between RF IN/OUT and device-un- Stop, der-test,...
Page 638 Index distortion, 60, 102, 110, 343, 478, 490, Meas Field Strength 500, Main Menu Signaling Encoder screen, NMT mode, DTMF decoder limits, Tests (Channel Information) screen, EDACS transmitter, 526, MEAS RESET key, FM deviation, 59, 106, 348, 474, Tests (Execution Conditions) screen, Measure frequency error, DTMF, Signaling Decoder screen, NAMPS-...
Page 639 Index memory overflow error, output, FVC, dc current, Message query, signal strength, Signaling Encoder screen, AMPS- RECCW A, Mgmt/Maint TACS mode, 361, RECCW B, Signaling Encoder screen, NMT mode, Signaling Encoder screen, NAMP- RECCW C, NTAC mode, 361, RECCW D, Mic Pre-Emp message RECCW E,...
Page 640 Index Signaling Decoder screen, NAMPS- description, NTACS, for modulating RF generator, names Signaling Decoder screen, NMT, modulation quality printout, 455, Signaling Decoder screen, Tone Seq, AF frequency, registers, FM deviation, NAMPS-NTACS Signaling Encoder screen, AMPS- transmitter frequency error, control channel decoder, TACS mode, transmitter power, forward control channel,...
Page 641 Index view of, Add Info, NO key, narrowband AFGen2 To, No Pk/Avg decoder, signaling standard, Alarm Level High, Spectrum Analyzer screen, encoder, signaling standard, Alarm Level Low, Nordic mobile telephone for 900 MHz system, Area #, decoder, narrow-band advanced mobile phone ser- Audio Out, encoder, vice...
Page 642 Index input, RX Test screen, input attenuator, 107, Spectrum Analyzer screen, octal code level, markers, Output Results For for CDCSS encoder, marker types, Tests (Execution Conditions) screen, Off Time markers, level, Signaling Decoder screen, DTMF resolution, Tests (Printer Setup) screen, mode, scale, Output Results To...
Page 643 Index password, Signaling Encoder screen, LTR mode, PCMCIA card (see Memory card), Page peak Signaling Encoder screen, NAMP- Call Control screen, hold, spectrum analyzer, NTAC mode, Call Data screen, 169, spectrum analyzer marker, polarity page units, 394, 487, radio interface strobe, selecting, peak detector, 105, 108, 347, Port/Sweep (Tracking Gen)
Page 644 Index Oscilloscope screen, priority fields, 55, 92, 101, 102, 110, 272, PREV key, 289, 301, 335, 342, 343, 344, 345, radio print 346, 347, 478, 486, 487, 490, 497, connecting, screens, 66, 498, 500, 509, 552, 553, 554, LTR trunking data, Print All Proc Save/Delete Procedure test software,...
Page 645 Index ZVEI1, receive pace, Res BW ZVEI2, Ref indicator, Adjacent Channel Power screen, Radio Unit Under Test Ref Level resolution Signaling Encoder screen, MPT 1327 Spectrum Analyzer screen, bandwidth, ACP measurement, mode, REF SET, bandwidth, spectrum analyzer, REF SET key, oscilloscope, for NMT decoder tests, reference...
Page 646 TX Freq Error, SINAD, Configure Screen, TX Frequency, SNR, TX Power, TX Freq Error, dectector, 105, 347, TX Pwr Meas (HP 8920B), TX Frequency, measurement, 101, 485, TX Pwr Zero, TX Power, units, 394, 487, view of, view of, RF auto-tuning, 96, 351, 479,...
Page 647 Index AFGen2 Freq, RX/TX screen interactions, AFGen2 To, setting intensity, 50, s, 380, Amplitude, using screen control keys, S, battery save, Atten Hold, second word of called address, sampling Current, SECURE_IT, AF counter, DC Level, securing files, RF counter, Distn, Select Procedure Filename Ext Load R, Tests (Main Menu) screen,...
Page 648 Index Signaling Encoder screen, NAMP- Call Bit screen, Mode, Tone Seq, NTAC mode, settings Signaling Decoder screen, AMPS-TACS Signaling Encoder screen, Tone Seq base, mode mode, beeper volume, AF Anl In, Sensitivity changing, field, Arm Meas, RF Analyzer screen, date, Channel, Spectrum Analyzer screen, default, 78,...
Page 649 Index Off Time, Channel, Mode, AMPS-TACS, On Time, Input Level, Mode, CDCSS, Single/Cont, Measure, Mode, Digi Page, Stop Meas, Num of Bits, Mode, DTMF, Sym, RECC Data, Mode, EDACS, Signaling Decoder screen, EDACS mode Single/Cont, Mode, Func Gen, AF Anl In, Stop Meas, Mode, LTR, Arm Meas,...
Page 650 Index Bursts, Working Channel, Number, B/I Delay (FOCC), Data Rate, Working Channel, RXFrequency, Bursts, Error Bit, Working Channel, TXFrequency, Busy/Idle, FM Coupling, Signaling Encoder screen, Func Gen Channel, Function, mode Data Level, Mssg Length, AFGen2 Freq, Data Rate, Pager Alpha-NumericMessage, AFGen2 To, DSAT, Pager Code,...
Page 651 Index Traffic Channel (Alt),Power, Signaling Decoder screen, CDCSS peak detector, Traffic Channel (Main),Number, mode, Span Traffic Channel (Main),Power, Signaling Decoder screen, Digi Page Spectrum Analyzer screen, Signaling Encoder screen, Tone Seq mode, span mode Signaling Decoder screen, DTMF effect on AF analyzer, AFGen2 To, mode, spectrum analyzer,...
Page 652 Stop Signaling Decoder screen, NMT mode, digital decoding, Signaling Encoder screen, AMPS- effects on decoder, TACS mode, Strobe Pol effects on HP-IB operation, Signaling Encoder screen, CDCSS Radio Interface screen, effects on oscilloscope, mode, Sub-Audible Dev effects on remote operation,...
Page 653 Index tracking generator, Model, Options, TA1, main traffic area, Signaling Decoder screen, DTMF Output Heading, TA2, alternate traffic area, mode, view of, talk & listen, Signaling Decoder screen, Tone Seq Tests (IBASIC Controller) screen, tariff class information, mode, Clr Scr, TC1, main traffic channel, symbol Continue,...
Page 654 Index FF at End, for printout, 455, Symbol Definition, FF at Start, Symbol Sequence, Lines/Page, defined, view of, Main Menu, TOC Time tone-only operation Model, Signaling Encoder screen, CDCSS digital paging, Output Heading, mode, total access communication system for Output Results For, tone length Japan Output Results To,...
Page 655 Duplex Test screen, RF Generator screen, mode, RF Analyzer screen, TX Test screen, Trigger Pattern (bin) TX Test screen, TX Pwr Meas (HP 8920B) Signaling Decoder screen, AMPS- Tune Mode RF Analyzer screen, TACSmode, Adjacent Channel Power screen, TX Test screen,...
Page 656 Voltage TX Frequency, clearing, global assignment, Service screen, TX Power, clearing, local assignment, voltage TX Pwr Meas (HP 8920B), deleting, global assignment, measurement, 101, 485, TX Pwr Zero, deleting, local assignment, RF, across 50 ohm load, Type example,...
Page 657 Index Working Channel, TX Frequency Signaling Encoder screen, EDACS- W (watts) Xmt Pace mode, displaying results in, I/O Configure screen, Write-protect switch, Waveform Xon/Xoff, 440, Signaling Encoder screen, Func Gen mode, waveform Gaussian noise, selecting, sine, square, triangle, universal noise, wideband decoder, signaling standard, encoder, signaling standard,...
Page 658 Index YES key, zero crossing detecting, zero reference tranmitter power, 97, 480, zeroing DCFM, measurement offset, power meter, 97, 141, 152, 480, ZVEI1 radio standard, ZVEI2 radio standard,...

HP 8920A User Manual

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