Page 1 HP 8921A Cell Site 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 CAUTION: 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.
Page 7 HP from another coun- try. HP warrants that its software and firmware designated by HP for use with an in- strument will execute its programming instructions when properly installed on that instrument.
Page 8: Declaration Of Conformity
RF Communications Test Set / Cell Site Test Set Product Name: Model Number: HP 8920A, HP 8920B, and HP 8921A Product Options: This declaration covers all options of the above product. conforms to the following Product specifications:...
Page 9 If you have used the manuals and still have application questions, contact your lo- cal HP Sales Representative. Repair assistance is available for the HP 8924C CDMA Mobile Test Set from the factory by phone and e-mail. Internal Hewlett-Packard users can contact the factory through HPDesk or cc:Mail©...
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 8921A 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: Table Of Contents
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 Saving and Recalling Instrument Setups 71 Using USER Keys 75 Setting an RF Generator/Analyzer Offset 79 Using Remote Control 80...
Page 16: Table Of Contents
Contents 4 Adjacent Channel Power Screen How the Test Set Measures Adjacent Channel Power (ACP) 86 Field Descriptions 87...
Page 17 Contents 5 AF Analyzer Screen Block Diagram 96...
Page 18: Table Of Contents
Contents 6 Call Processing Subsystem Description of the Call Processing Subsystem 110 Using the Call Processing Subsystem 114 The CALL CONTROL Screen 118 Using the CALL CONTROL Screen to Test Call Processing Functions 129 CALL DATA Screen 139 CALL DATA Screen Message Field Descriptions 144 Using the CALL DATA Screen 153 CALL BIT Screen 161 CALL BIT Screen Message Field Descriptions 167...
Page 19 Contents 7 Configure Screen Field Descriptions 202...
Page 20: Table Of Contents
Contents 8 Signaling Decoder Screen Field Descriptions for Decoder Modes 216 AMPS-TACS, NAMPS-NTACS Decoder 217 Using the AMPS/TACS, NAMPS/NTACS Decoder 222 Continuous Digital Controlled Squelch System Decoder 226 Using the CDCSS Decoder 230 Digital Paging Decoder 231 Dual-Tone Multi-Frequency (DTMF) Decoder 235 Using the DTMF Decoder 240 EDACS Decoder 241 Using the EDACS Decoder 244...
Page 21 Contents 9 Duplex Test Screen Block Diagram 286 Field Descriptions 287...
Page 22: Table Of Contents
Contents 10 Signaling Encoder (AF Generator 2) Field Descriptions for Encoder Modes 300 AMPS-TACS NAMPS-NTACS Encoder 301 Using the AMPS-TACS, NAMPS-NTACS Encoder 313 CDCSS Encoder 314 Using the CDCSS Encoder 318 Digital Paging Encoder 319 DTMF Sequence Encoder 324 EDACS Encoder 328 Using the EDACS Encoder 334 Function Generator Encoder 339 LTR Encoder 342...
Page 23 Contents 11 Help Screen Field Descriptions 382...
Page 24 Contents 12 I/O Configure Screen Field Descriptions 384...
Page 25 Contents 13 Message Screen Field Descriptions 390...
Page 26 Contents 14 Oscilloscope Screen Field Descriptions 392 Using the Oscilloscope 398...
Page 27 Contents 15 Print Configure Screen Field Descriptions 400...
Page 28: Table Of Contents
Contents 16 Radio Interface Screen Radio Interface Functional Description 404 Field Descriptions 406 Using the Radio Interface (Manual Operation) 409 Using The Radio Interface (Remote Operation) 415...
Page 29 Contents 17 RF Analyzer Screen Block Diagram 418 Field Descriptions 419...
Page 30 Contents 18 RF Generator Screen Block Diagram 430 Field Descriptions 431...
Page 31 Contents 19 RX Test Screen Block Diagram 440 Field Descriptions 441...
Page 32 Contents 20 Service Screen Field Descriptions 448...
Page 33 Contents 21 Spectrum Analyzer Screen Field Descriptions 452 Using the Spectrum Analyzer 464...
Page 34: Table Of Contents
Contents 22 Tests Screen Description of the Tests Subsystem 466 TESTS (Main Menu) 468 TESTS (Channel Information) 471 TESTS (Test Parameters) 473 TESTS (Order of Tests) 474 TESTS (Pass/Fail Limits) 476 TESTS (Save/Delete Procedure) 478 TESTS (Execution Conditions) 481 TESTS (External Devices) 484 TESTS (Printer Setup) 487 TESTS (IBASIC Controller) 490 ROM Programs 492...
Page 35 Contents 23 TX Test Screen Block Diagram 496 Field Descriptions 497...
Page 36 Contents 24 Connector, Key, and Knob Descriptions Connector Descriptions 508 Key Descriptions 526 Knob Descriptions 530...
Page 37 Contents 25 Modifications, Accessories, Manuals, Support Modifications 532 Accessories 535 HP Support for Your Instrument 546...
Page 38 Contents...
Page 39 Get Started...
Page 40: Before Connecting A Radio
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: Accessing The Test Set's Screens
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: Changing A Field's Setting
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: How Do I Verify That The Test Set Is Operating Properly
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: Instrument Functional Diagram
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)
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...
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: Interaction Between Screens
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 RF Gen Amplitude Presets to 80 dBm (changeable) 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 Using your Test Set, duplicate the steps in to demonstrate how the figure 7 Priority fields operate. fig2-2.wmf Figure 7 Example of How Priority Fields Work...
Page 57: Displaying Measurements
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: Entering And Changing Numbers
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 units from dBm to V).
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 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 the knob or push of the down-arrow or up-arrow keys, pushing INCR once...
Page 66: Printing A Screen
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: Using Measurement Limit Indicators
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 relese 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: Averaging Measurements
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: Setting A Measurement Reference
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: Saving And Recalling Instrument Setups
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 72 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 73 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 74 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 75: Using User Keys
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 76 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 9 2.
Page 77 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 78 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 79: Setting An Rf Generator/Analyzer Offset
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 80: Using Remote Control
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 81 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 82 Chapter 3, Operating Overview Using Remote Control Table 5 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 83 Chapter 3, Operating Overview Using Remote Control Table 5 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 84 Chapter 3, Operating Overview Using Remote Control...
Page 85: Adjacent Channel Power Screen
Adjacent Channel Power Screen 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. This screen is accessed by selecting AD CH PWR from the menu.
Page 86: How The Test Set Measures Adjacent Channel Power (Acp)
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 87: Field Descriptions
Chapter 4, Adjacent Channel Power Screen Field Descriptions Field Descriptions adchpwr.wmf Figure 10 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 88 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 89 Chapter 4, Adjacent Channel Power Screen Field Descriptions adchpwr1.wmf Figure 11 Relationship Between Tune Freq, Ch Offset, and Channel BW Fields...
Page 90: Ch Offset
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 11 Ext TX key This field controls a switch at the MIC/ACC connector.
Page 91 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 92: Res Bw
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 93 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 94 Chapter 4, Adjacent Channel Power 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’s Amplitude field to off to prevent internal cross-coupling into the power detector while zeroing.
Page 95 AF Analyzer Screen...
Page 96: Block Diagram
Chapter 5, AF Analyzer Screen Block Diagram Block Diagram Figure 12 AF ANALYZER Functional Block Diagram , and fields are not shown. Settling Gain Cntl Ext Load R Variable Frequency Notch if purchased.
Page 97 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 102 The input for the ac level measurement on this screen is always the AUDIO IN connectors.
Page 98: Af Cnt Gate
Chapter 5, AF Analyzer Screen Block Diagram AF Cnt Gate Audio frequency counter gate specifies how long the AF 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. AF Freq This is the default measurement for this measurement field.
Page 99 Chapter 5, AF Analyzer Screen Block Diagram AM Depth This field displays the percent depth of modulation of the AM signal. The field is only visible when the field is set to AF ANL In AM MOD AM DEMOD Audio In Lo This field sets the AUDIO IN LO connector’s state.
Page 100 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 101 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 102 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 103: Gain Cntl
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 104: Notch Freq
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 105 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 106 Chapter 5, AF Analyzer Screen Block Diagram 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 Operating Considerations This is a priority control field.
Page 107: Speaker Alc
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 108 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 109 Call Processing Subsystem...
Page 110: Description Of The Call Processing Subsystem
Chapter 6, Call Processing Subsystem Description of the Call Processing Subsystem Description of the Call Processing Subsystem The Call Processing Subsystem, which comprises five 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 111 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 112 Chapter 6, Call Processing Subsystem Description of the Call Processing Subsystem State: Idle State: Register Annunciator: None Annunciator: Register Meas:RECCW A Meas: None 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 113 Chapter 6, Call Processing Subsystem Description of the Call Processing Subsystem Accessing the Call Processing Subsystem’s Screens The Call Processing Subsystem screens are accessed by selecting CALL CNTL from the menu on the Test Set’s CRT (you may have to choose the To Screen choice to display the choice).
Page 114: Using The Call Processing Subsystem
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 14, "Connecting a Mobile Station to the Test Set,"...
Page 115 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 14 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 116 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 117 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 130 •...
Page 118: The Call Control Screen
Chapter 6, Call Processing Subsystem The CALL CONTROL Screen The CALL CONTROL Screen Figure 15 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 AMPS, TACS, and Figure 15 on page 118 JTACS.
Page 119 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen [] Access When lit, the annunciator indicates the Test Set is signaling the mobile Access station with command information on the forward voice channel. This is a transitory state. The Test Set’s speaker is turned off when in the access state. This is done to eliminate any possible audio feedback which may occur if the mobile station’s microphone is open.
Page 120 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen Called Number: This field displays the called phone number, in decimal form, received from the mobile station on the reverse control channel when the mobile station originates a call. The field is displayed only when the field is set Called Number: Display...
Page 121 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen NOTE: When the CALL CONTROL screen is displayed and the Call Processing Subsystem is in the connected state (Connect annunciator is lit), the Test Set constantly monitors the mobile station’s transmitted carrier power. If the power falls below 0.0005 Watts the Test Set will terminate the call and return to the active state (Active annunciator is lit).
Page 122 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen Figure 16 CALL CONTROL Screen with Decoding Error Message Display Figure 17 AMPS, TACS, and JTACS CALL CONTROL Screen with Meas Selected...
Page 123 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen ESN (dec): This field displays the electronic serial number (ESN), in decimal form, received from the mobile station on the reverse control channel in response to a forward control channel message. The field is displayed only when the ESN (dec): field is set to...
Page 124 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen MS Id This field is used to enter the identification number of the mobile station. The has two fields. The upper field is a one-of-many selection field and is used MS Id to select the format for entering the identification number.
Page 125 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 126 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 127 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 128 Chapter 6, Call Processing Subsystem The CALL CONTROL Screen System Type This field is used to select the type of cellular system (AMPS, TACS, JTACS) which will be simulated. field is an immediate action field. That is, whenever the System Type field is changed, the change is reflected immediately in the System Type physical configuration of the Test Set.
Page 129: Using The Call Control Screen To Test Call Processing Functions
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 130 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 131 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to Test Call Processing Functions 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 132 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to Test Call Processing Functions Turn On The Test Set’s Control Channel 1. If not already done, condition the Test Set. See "Conditioning the Test Set for Call Processing" on page 130 for further information.
Page 133 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 134 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 135 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 136 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to Test Call Processing Functions Change the Transmit Power Level of a Mobile Station 1. Ensure that the Test Set is in the connected state. See "Page a Mobile Station" on page 133 for information on how to bring a mobile station up on a voice channel.
Page 137 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to Test Call Processing Functions Originate a Call from a Mobile Station 1. Ensure that the Test Set is in the active state. See "Turn On The Test Set’s Control Channel"...
Page 138 Chapter 6, Call Processing Subsystem Using the CALL CONTROL Screen to Test Call Processing Functions Send an Alert Order to a Mobile Station 1. Ensure that the Test Set is in the connected state. See "Page a Mobile Station" on page 133 for information on how to bring a mobile station up on a voice channel.
Page 139: Call Data Screen
Chapter 6, Call Processing Subsystem CALL DATA Screen CALL DATA Screen Figure 18 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. Six different decoded messages can be viewed on this screen.
Page 140 Chapter 6, Call Processing Subsystem CALL DATA Screen The messages which can be viewed are: • Reverse Control Channel Messages for Paging, Origination, Orders, and Order Confir- mation. RECCW A - Word A - Abbreviated Address Word RECCW B - Word B - Extended Address Word RECCW C - Word C - Serial Number Word RECCW D - Word D - First Word of the Called-Address RECCW E - Word E - Second Word of the Called-Address...
Page 141 Chapter 6, Call Processing Subsystem CALL DATA Screen [] Access When lit, the annunciator indicates the Test Set is signaling the mobile Access station with command information on the forward voice channel. This is a transitory state. The Test Set’s speaker is turned off when in the access state. This is done to eliminate any possible audio feedback which may occur if the mobile station’s microphone is open.
Page 142 Chapter 6, Call Processing Subsystem CALL DATA Screen Display Word This field is used to select the desired reverse control channel or reverse voice channel message to be viewed. Handoff Order This field is used to send an order on the forward voice channel to the mobile station.
Page 143 Chapter 6, Call Processing Subsystem CALL DATA Screen Register This field is used to initiate a registration of the mobile station connected to the Test Set. The Test Set must be in the active state (that is, the annunciator Active lit) before you can attempt to register a mobile station.
Page 144: Call Data Screen Message Field Descriptions
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 19 RECCW A Message Fields This field displays the first word indication received from the mobile station.
Page 145 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 146 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions RECCW B Message Fields Figure 20 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 147 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 148 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions RECCW C Message Fields Figure 21 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 149 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions RECCW D Message Fields Figure 22 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 150 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions RECCW E Message Fields Figure 23 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 151 Chapter 6, Call Processing Subsystem CALL DATA Screen Message Field Descriptions RVCOrdCon Message Fields Figure 24 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 152 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 153: Using The Call Data Screen
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 154 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 155 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 156 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 144 for a descrip- tion of each of the available reverse channel words.
Page 157 Chapter 6, Call Processing Subsystem Using the CALL DATA Screen 12. Select the Display Word field. A list of reverse channel words which can be dis- played will appear in a Choices: menu. Select the desired word from the list of choices.
Page 158 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 130 for further information.
Page 159 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 160 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 130 for further information.
Page 161: Call Bit Screen
Chapter 6, Call Processing Subsystem CALL BIT Screen CALL BIT Screen Figure 25 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 162 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 163 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Contents that can be Modified Using the CALL BIT screen The contents of eleven different messages can be modified from this screen. The message to be modified is selected using the field.
Page 164 Chapter 6, Call Processing Subsystem CALL BIT Screen [] Active When lit, the annunciator indicates that the control channel of the Test Active Set is turned on. If this annunciator is lit the base station is transmitting system parameter overhead messages on the assigned control channel. If the annunciator is not lit the base station is not active (note that 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).
Page 165 Chapter 6, Call Processing Subsystem CALL BIT Screen NOTE: 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 in the Bits mode. There is no coupling between the Bits mode and the Test Set. For example: if a mobile station was actively connected to the Test Set on a voice channel and the user changed the CHAN field on the forward voice channel mobile station control message (FVC V Mes) and sent that message to the mobile station, the mobile station would change its voice channel assignment.
Page 166 Chapter 6, Call Processing Subsystem CALL BIT Screen A mobile station must be actively connected on a voice channel to the Test Set (that NOTE: is, the annunciator lit) before you can attempt to send an order to a mobile Connect station.
Page 167: Call Bit Screen Message Field Descriptions
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 26 SPC WORD1 Message Fields T1T2...
Page 168 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 169 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions SPC WORD2 Message Fields Figure 27 SPC WORD2 Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message. Digital color code field. This field displays whether the serial number word is sent to the mobile station.
Page 170 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions REGR Registration field for roaming stations. Discontinuous transmission field. N is the number of paging channels in the system. Read-control-filler field. Combined paging/access field. CMAX-1 CMAX is the number of access channels in the system. End indication field.
Page 171 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions ACCESS Message Fields Figure 28 ACCESS Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message. Digital color code field. Global Action Field.
Page 172 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 173 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions REG INC Message Fields Figure 29 REG INC Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message. Digital color code field. Global Action Field.
Page 174 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 175 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions REG ID Message Fields Figure 30 REG ID Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message. Digital color code field. REGID Registration ID field.
Page 176 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 177 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions C-FILMESS Message Fields Figure 31 C-FILMESS Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message. Digital color code field. Control filler message field 1.
Page 178 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions RSVD2 Reserved for future use, all bits must be set as indicated. Control filler message field 3. All bits must be set as indicated. WFOM Wait-for-overhead-message field. Control filler message field 4. All bits must be set as indicated. This field displays the overhead message type.
Page 179 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions MS WORD1 Message Fields Figure 32 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 180 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions MSMessOrd Message Fields Figure 33 MSMessOrd Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message. SAT color code field. MIN2 Second part of the mobile identification number field.
Page 181 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 182 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions MS IntVCh Message Fields Figure 34 MS IntVCh Message Fields T1T2 This field identifies the received message as an order confirmation, an order, or a called address message. SAT color code field. MIN2 Second part of the mobile identification number field.
Page 183 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions FVC O Mes Message Fields Figure 35 FVC O Mes 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.
Page 184 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 185 Chapter 6, Call Processing Subsystem CALL BIT Screen Message Field Descriptions FVC V Mes Message Fields Figure 36 FVC V Mes 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.
Page 186 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.
Page 187: Using The Call Bit Screen
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 188 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 189 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 190 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 191 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 192: Analog Meas Screen
Chapter 6, Call Processing Subsystem ANALOG MEAS Screen ANALOG MEAS Screen Figure 37 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 193 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 106 measurements available.
Page 194 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 195: Using The Analog Meas Screen
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 196 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 130 for further information. 2. If not already done, configure the Test Set. See "Configure the Test Set"...
Page 197 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 130 for further information. 2.
Page 198: Call Configure Screen
Chapter 6, Call Processing Subsystem CALL CONFIGURE Screen CALL CONFIGURE Screen Figure 38 The CALL CONFIGURE Screen This screen is used to set some of the less commonly used Test Set configuration parameters. When the CALL CONFIGURE screen is displayed and the Call Processing Subsystem is in the connect state, the Test Set constantly monitors the mobile station’s transmitted carrier power.
Page 199 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 200 Chapter 6, Call Processing Subsystem CALL CONFIGURE Screen...
Page 201: Configure Screen
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 202 Chapter 7, Configure Screen Field Descriptions Field Descriptions cnfgscrn.wmf Figure 39 The Configure Screen 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 203 Chapter 7, Configure Screen Field Descriptions This field is only used when the field is set to RF Level Offset See Also RF Level Offset field description, on page 211 Base Freq (User Defined) The Base Frequency field sets the RF Generator reference for channel 0 (zero) when the field is set to , and the...
Page 204 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 205 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 206 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 207 None Generator 1 do not interact. When set to (coupled), the settings track each AFGen1 other unless the AF Generator’s frequency is set outside the 300 Hz to 10 kHz limits of the notch filter Optional for the HP 8921A.
Page 208 Chapter 7, Configure Screen Field Descriptions Range Hold 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.
Page 209 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 210 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 211 Chapter 7, Configure Screen Field Descriptions RF In/Out This field is used to indicate losses or gains between the RF IN/OUT port and the device-under-test. • Enter a positive value to indicate a gain (such as an amplifier gain). When the RF IN/OUT port is used as an output, the RF Generator’s (or Tracking Generator’s) lev- el is automatically set the specified amount below what is indicated in the RF Genera- tor’s Amplitude field.
Page 212 Chapter 7, Configure Screen Field Descriptions RF Offset This field is displayed when the RF Display field has Freq selected. This field enables/disables the RF Generator RF Analyzer frequency offset specified in the field below it. (Gen)-(Anl) Operating Considerations When an RF offset is used, changing the RF Generator’s frequency or RF Analyzer’s tune frequency automatically alters the other setting.
Page 213 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 214 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 215 Signaling Decoder Screen...
Page 216: Field Descriptions For Decoder Modes
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 217: Amps-Tacs, Namps-Ntacs Decoder
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 218 Chapter 8, Signaling Decoder Screen AMPS-TACS, NAMPS-NTACS Decoder nmps-de1.wmf Figure 41 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 219 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 220 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 221 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 222: Using The Amps/Tacs, Namps/Ntacs Decoder
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 223 Chapter 8, Signaling Decoder Screen Using the AMPS/TACS, NAMPS/NTACS Decoder amps-de3.wmf Figure 43 Decoding AMPS-TACS Reverse Voice Channel (RVC) Data nmps-de2.wmf Figure 44 Decoding NAMPS-NTACS Reverse Voice Channel (RVC) Data...
Page 224 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 225 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 226: Continuous Digital Controlled Squelch System Decoder
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 45 The CDCSS Sequence Decoder Screen AF Anl In...
Page 227 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 228 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 229 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 230: Using The Cdcss Decoder
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 231: Digital Paging Decoder
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 46 The Digital Paging Decoder Screen...
Page 232 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 233 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 234 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 235: Dual-Tone Multi-Frequency (Dtmf) Decoder
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 47 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 236 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 237 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 238 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 239 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 240: Using The Dtmf Decoder
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 241: Edacs Decoder
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 242 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 243 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 244: Using The Edacs Decoder
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 245 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 246 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 247: Function Generator Decoder
Chapter 8, Signaling Decoder Screen Function Generator Decoder Function Generator Decoder func-dec.wmf Figure 49 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 248 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 249 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 250: Using The Function Generator Decoder
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 251: Ltr Decoder
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 50 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 252 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 253 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 254 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 255: Using The Ltr Decoder
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 256 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 257: Mpt 1327 Decoder
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 258 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 259 Chapter 8, Signaling Decoder Screen MPT 1327 Decoder Table 6 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 260 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 261 •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 262: Nmt Decoder
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 263 Chapter 8, Signaling Decoder Screen NMT Decoder nmt-de1.wmf Figure 52 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 264 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 265 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 266 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 267: Using The Nmt Decoder/Encoder
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 268 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 269 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 270 Chapter 8, Signaling Decoder Screen Using the NMT Decoder/Encoder Required Test Set Settings The following Test Set settings should be made before using the NMT Encoder/ Decoder screens. These settings assume the Test Set is in its preset state. RF Generator Settings AFGen1 To: Audio Out and Off AFGen2 To: FM and 3.5 kHz RF Analyzer Settings...
Page 271 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 272: Creating Nmt Tests
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 273 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 274 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 275 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 276 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 277 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 278 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 279 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 280 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 281: Tone Sequence Decoder
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 53 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 282 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 283 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 284 Chapter 8, Signaling Decoder Screen Tone Sequence Decoder...
Page 285 Duplex Test Screen...
Page 286 Chapter 9, Duplex Test Screen Block Diagram Block Diagram Figure 54 DUPLEX TEST Functional Block Diagram...
Page 287 Chapter 9, Duplex Test Screen Field Descriptions Field Descriptions dxscrn.wmf Figure 55 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 288 "Displaying Measurements"...
Page 288 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 289 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 290 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 291 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 292 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 293 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 294 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 295 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 296 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 297 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 298 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 299 Signaling Encoder (AF Generator 2)
Page 300: Field Descriptions For Encoder Modes
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 301: Amps-Tacs Namps-Ntacs Encoder
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 302 Chapter 10, Signaling Encoder (AF Generator 2) AMPS-TACS NAMPS-NTACS Encoder amps-en3.wmf Figure 57 AMPS-TACS Mode Forward Voice Channel (FVC) nmps-en1.wmf Figure 58 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 303: B/I Delay (Focc)
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 304 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 305 Chapter 10, Signaling Encoder (AF Generator 2) AMPS-TACS NAMPS-NTACS Encoder Filler (FOCC) Figure 59 AMPS-TACS/NAMPS-NTACS FOCC Message and Filler Data Format...
Page 306 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 307 Chapter 10, Signaling Encoder (AF Generator 2) AMPS-TACS NAMPS-NTACS Encoder Message (FOCC) Figure 60 AMPS-TACS/NAMPS-NTACS FOCC Message and Filler Data Format Message streams A and B specify various forward control channel parameters. Operating Considerations Like the filler information, the message information can only be input in full (seven digit) lines.
Page 308 Chapter 10, Signaling Encoder (AF Generator 2) AMPS-TACS NAMPS-NTACS Encoder Message (FVC) Figure 61 AMPS-TACS FVC Message Data Output Format This description applies to the AMPS-TACS mode. The 7 hexadecimal characters of the FVC field represent the 2 type bits Message and 26 information bits in the FVC message word.
Page 309 Chapter 10, Signaling Encoder (AF Generator 2) AMPS-TACS NAMPS-NTACS Encoder Message (FVC) Figure 62 NAMPS-NTACS FVC Message Data output Format This description applies to the NAMP-NTAC mode. The 7 hexadecimal characters (28 bits) of this FVC message are combined with 12 parity bits calculated by the encoder to output a 40-character data stream.
Page 310 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 311 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 312 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 313: Using The Amps-Tacs, Namps-Ntacs Encoder
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 314: Cdcss Encoder
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 315 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 316 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 317 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 318: Using The Cdcss Encoder
Chapter 10, Signaling Encoder (AF Generator 2) Using the CDCSS Encoder Using the CDCSS Encoder The CDCSS Data Stream Figure 64 CDCSS Data Stream Bit Assignments The CDCSS encoder creates a 23-bit digital data stream and Turn Off Code...
Page 319: Digital Paging Encoder
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 320: Error Bit
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 321: Mssg Length
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 322 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 323 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 324: Dtmf Sequence Encoder
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 325 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 326 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 327 Send Selecting this field causes the DTMF sequence to be output.
Page 327 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 328: Edacs Encoder
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 67 The EDACS Trunked Radio Encoder Mode Screen...
Page 329: Control Channel, Number
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 330: Group Id
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 331: Logical Id
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 332: Signaling Dev
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 333 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 334: Using The Edacs Encoder
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 335 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 336 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 337 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 338 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 339: Function Generator Encoder
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 68 The Function Generator Encoder Screen...
Page 340 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 341 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) Universal Noise Gaussian Noise...
Page 342: Ltr Encoder
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 343 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 344: Ltr Message
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 345 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 346: Using The Ltr Encoder
Chapter 10, Signaling Encoder (AF Generator 2) Using the LTR Encoder Using the LTR Encoder Figure 70 How Message 1 and Message 2 Fields are Used to Create Trunking Data...
Page 347 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 348 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 349 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 350: Mpt 1327 Encoder
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 71 The MPT 1327 Trunked Radio Encoder Mode Screen...
Page 351: Aloha Number
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 8 The aloha number is a two-digit decimal integer without leading zeros.
Page 352: Control Channel
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 353 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 354 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 355 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 356 Chapter 10, Signaling Encoder (AF Generator 2) MPT 1327 Encoder A43QA5 ENC : MPT1327 : FILL : DATA 1,’ALH ,,100 , 0 , 0 , 1 ‘ QA9F3DAF9 8APEU3P7 È3QQ7E4D7PÉ 7F5G67P Q5P77F SETTING & DEFAULTS ALH 0,8191 , 100 , 0 , 0 , 1 PFIX = 0 80FFFC02E001 IDENT = 8191...
Page 357 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 358 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 359 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 360 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 361 Chapter 10, Signaling Encoder (AF Generator 2) MPT 1327 Encoder " " " " Figure 76 Forward Control Channel Message Structure " 7R5 È" É È" É È" É Figure 77 Traffic Channel Message Structure...
Page 362 Chapter 10, Signaling Encoder (AF Generator 2) MPT 1327 Encoder Table 10 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 10 Signaling Mode Transitions Table To From...
Page 363: Using The Mpt 1327 Encoder
Chapter 10, Signaling Encoder (AF Generator 2) Using the MPT 1327 Encoder Using the MPT 1327 Encoder Manually Testing MPT 1327 Radios MPT 1327 signals contain complex groupings of digital data that vary in format and function, depending on a number of system operating parameters. To be able to test MPT 1327 radios using this screen, you must be familiar with the theory, applications, and specifications of the MPT 1327 system.
Page 364: Radio Unit Under Test
Chapter 10, Signaling Encoder (AF Generator 2) Using the MPT 1327 Encoder Radio Unit Under Test function uses two input fields; a 7-bit Radio Unit Under Test Prefix field and a 13-bit field. This allows you to enter the prefix and identity of Ident your radio unit (RU).
Page 365 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 366: Nordic Mobile Telephone (Nmt) Encoder
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 367: Access Channel Number
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 368 Chapter 10, Signaling Encoder (AF Generator 2) Nordic Mobile Telephone (NMT) Encoder Table 11 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 369: Alarm Level Low
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 370: Bs Identity
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 371: Calling Channel Number
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 372 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 373: Meas Field Strength
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 374 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 375 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 376 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 377 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 378: Tone Sequence Encoder
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 79 The Tone Sequence Encoder Mode Screen...
Page 379 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 380 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 381 Help Screen...
Page 382 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 383 I/O Configure Screen...
Page 384 Field Descriptions Field Descriptions ioconfig.wmf Figure 80 The I/O Configure Screen The I/O CONFIGURE screen’s fields are used to specify HP-IB and serial communications settings. . This screen is accessed by selecting the field (directly below the More menu), and selecting...
Page 385 This setting is retained when the instrument is turned off. HP-IB Address 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 386 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 387 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 388 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 389 Message Screen...
Page 390 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 391 Oscilloscope Screen...
Page 392 Chapter 14, Oscilloscope Screen Field Descriptions Field Descriptions oscscrn.wmf Figure 81 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 393 Chapter 14, Oscilloscope Screen Field Descriptions Oscilloscope Main Menu Fields oscscrn3.wmf Figure 82 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 394 Chapter 14, Oscilloscope Screen Field Descriptions Oscilloscope Marker Menu Fields oscscrn5.wmf Figure 83 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 395 Chapter 14, Oscilloscope Screen Field Descriptions Marker Measurements oscscrn2.wmf Figure 84 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 396 Chapter 14, Oscilloscope Screen Field Descriptions Oscilloscope Trigger Menu Fields oscscrn4.wmf Figure 85 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 397 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 398: Using The Oscilloscope
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 86 Oscilloscope Input Indicator Using the Scope To Field field in the AF ANALYZER screen allows you to look at the Scope To...
Page 399 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 400: Abort Print
Chapter 15, Print Configure Screen Field Descriptions Field Descriptions prntconf.wmf Figure 87 The Printer Configurations Screen 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 401 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 402 Chapter 15, Print Configure Screen Field Descriptions...
Page 403: Radio Interface Screen
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 404: Radio Interface Functional Description
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 405 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 520 Audio Analyzer The Test Set’s audio analyzer can be accessed through the OPTION INTERFACE connector.
Page 406 Chapter 16, Radio Interface Screen Field Descriptions Field Descriptions riscrn.wmf Figure 88 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.
Page 407 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 408 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 409: Using The Radio Interface (Manual Operation)
Chapter 16, Radio Interface Screen Using the Radio Interface (Manual Operation) Using the Radio Interface (Manual Operation) CAUTION: Do not connect a voltage source in excess of 0.3 V (for example, 0.4 V) to any Parallel Data 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 410 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 411 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 412 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 413 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 Logic Voltage Data Output Output Data (1 of 16) LM 339M Pins 9 - 34 Fixed Ref- erence...
Page 414 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 415: Using The Radio Interface (Remote Operation)
"Setting the Radio Interface’s Logic Level" on page 409. 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 416 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 417 RF Analyzer Screen...
Page 418 Chapter 17, RF Analyzer Screen Block Diagram Block Diagram Figure 91 RF ANALYZER Functional Block diagram...
Page 419 Chapter 17, RF Analyzer Screen Field Descriptions Field Descriptions rfascrn.wmf Figure 92 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 442 AF Anl In field description, on page 97...
Page 420 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 514 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 421 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 422 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 423 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 424 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 425 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 426 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 427 Chapter 17, RF Analyzer 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. RF power must not be applied while zeroing. Set the RF GENERATOR screen Ampli- tude field to off to prevent internal cross-coupling into the power detector while zeroing.
Page 428 Chapter 17, RF Analyzer Screen Field Descriptions...
Page 429 RF Generator Screen...
Page 430 Chapter 18, RF Generator Screen Block Diagram Block Diagram Figure 93 RF GENERATOR Functional Block Diagram...
Page 431 Chapter 18, RF Generator Screen Field Descriptions Field Descriptions rfgscrn.wmf Figure 94 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 432 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 433 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 434 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 435 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 436 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 437 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 297 "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 438 Chapter 18, RF Generator Screen Field Descriptions...
Page 439 RX Test Screen...
Page 440 Chapter 19, RX Test Screen Block Diagram Block Diagram Figure 95 The RX Test Fields and Their Functions...
Page 441 Chapter 19, RX Test Screen Field Descriptions Field Descriptions rxscrn.wmf Figure 96 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 442 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 443 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 444 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 445 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 446 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 Operating Considerations This is a priority control field.
Page 447: Service Screen
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 448 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 449 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 450 Chapter 20, Service Screen Field Descriptions...
Page 451 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 452 Chapter 21, Spectrum Analyzer Screen Field Descriptions Field Descriptions NOTE: The Spectrum Analyzer is optional on some Test Set models. sascrn.wmf Figure 97 The Spectrum Analyzer Screen and Menus...
Page 453 Chapter 21, Spectrum Analyzer Screen Field Descriptions Spectrum Analyzer Main Menu Fields sascrn2.wmf Figure 98 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 454 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 455 Chapter 21, Spectrum Analyzer Screen Field Descriptions RF Generator Menu Fields, Fixed Operation sascrn3.wmf Figure 99 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 456 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 457 Chapter 21, Spectrum Analyzer Screen Field Descriptions RF Generator Menu Fields, Tracking Operation sascrn4.wmf Figure 100 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 458 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 459 Chapter 21, Spectrum Analyzer Screen Field Descriptions Spectrum Analyzer Marker Menu Fields sascrn5.wmf Figure 101 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 460 Chapter 21, Spectrum Analyzer Screen Field Descriptions Marker Measurements sascrn1.wmf Figure 102 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 461 Chapter 21, Spectrum Analyzer Screen Field Descriptions Spectrum Analyzer Auxiliary Menu Fields sascrn6.wmf Figure 103 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 462 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 463 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 464 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 465: Tests Screen
Tests Screen...
Page 466: Description Of The Tests Subsystem
Using program control, the Test Set can run radio tests by itself and control other instruments using the HP-IB or Serial Port. The HP 11807B Cell Site is an example this type of testing.
Page 467 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 468: Tests (Main Menu)
Chapter 22, Tests Screen TESTS (Main Menu) TESTS (Main Menu) tstmain.wmf Figure 104 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 469 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 470 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 471: Tests (Channel Information)
Chapter 22, Tests Screen TESTS (Channel Information) TESTS (Channel Information) tstcinfo.wmf Figure 105 The TESTS (Channel Information) Screen This screen displays the channel frequencies to be tested.
Page 472 Chan# screen). When the cellular radio channel number is entered, the HP 11807B 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 473: Tests (Test Parameters)
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 474: Tests (Order Of Tests)
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 11807B 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 475 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 476: Tests (Pass/Fail Limits)
( ). (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.
Page 477 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 478: Tests (Save/Delete Procedure)
Chapter 22, Tests Screen TESTS (Save/Delete Procedure) TESTS (Save/Delete Procedure) tstsvdel.wmf Figure 109 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 479 This field is used to select where the program (code file) for the test procedure is stored. Code files are the main program files of the software, containing all of the test subroutines. If an HP 11807 memory card is catalogued, the code file is preceded by a lower-case c.
Page 480 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 481: Tests (Execution Conditions)
Chapter 22, Tests Screen TESTS (Execution Conditions) TESTS (Execution Conditions) tstexec.wmf Figure 110 The TESTS (Execution Conditions) Screen The TESTS (Execution Conditions) screen determines how tests are run.
Page 482 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 483 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 484: Tests (External Devices)
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.
Page 485 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 486 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 487: Tests (Printer Setup)
Chapter 22, Tests Screen TESTS (Printer Setup) TESTS (Printer Setup) tstprint.wmf Figure 112 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 488 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 489 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 490: Tests (Ibasic Controller)
Chapter 22, Tests Screen TESTS (IBASIC Controller) TESTS (IBASIC Controller) tstibasc.wmf Figure 113 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 491 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 492: Rom Programs
Chapter 22, Tests Screen ROM Programs ROM Programs Using the Signal Strength Meter sigmeter.wmf Figure 114 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 493 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 494 Chapter 22, Tests Screen ROM Programs...
Page 495 TX Test Screen...
Page 496 Chapter 23, TX Test Screen Block Diagram Block Diagram Figure 115 TX TEST Functional Block Diagram...
Page 497 Chapter 23, TX Test Screen Field Descriptions Field Descriptions txscrn.wmf Figure 116 The TX Test Screen...
Page 498 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 499 Chapter 23, TX Test Screen Field Descriptions AF Freq This is the default measurement for this measurement 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 500 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 501 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 502 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 503 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 504 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 505 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 506 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 507 Connector, Key, and Knob Descriptions...
Page 508 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 509 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 510 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 511 Chapter 24, Connector, Key, and Knob Descriptions Connector Descriptions Chassis Ground The rear-panel chassis ground terminal provides a general chassis connection, as well as providing a safety ground when dc power is used. WARNING: To prevent a potential shock hazard, always connect the chassis ground terminal to earth ground when operating this instrument from a dc power source.
Page 512 The male counterpart to this connector is included in the Connector Kit accessory. ( See "Accessories" on page 535 The following HP parts can also be ordered to assemble the male counterpart to this connector: Connector housing: 1251-4782 (1 required)
Page 513 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 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 514 Chapter 24, Connector, Key, and Knob Descriptions Connector Descriptions HP-IB 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" HP 8920 Programmer’s Guide MEMORY CARD Slot This front-panel opening is where memory cards are inserted.
Page 515 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 516 Chapter 24, Connector, Key, and Knob Descriptions Connector Descriptions mic-con.wmf Figure 117 MIC/ACC Connections See Also Chapter 18, "RF Generator Screen" Chapter 7, "Configure Screen" Chapter 17, "RF Analyzer Screen"...
Page 517 Chapter 24, Connector, Key, and Knob Descriptions Connector Descriptions MODULATION INPUT This connector provides an external modulation connection to the RF Generator. Operating Considerations Input impedance = 600 Maximum input level = 12 V peak Full scale input = 1 V peak field of the RF GENERATOR screen sets the type of modulation Mod In To (AM or FM) and sensitivity (%AM/Vpk or kHz/Vpk) for this connection.
Page 518 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 519 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 520 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 118 on page 519. Pin assignments are as follows: 1. GND 2. No Connection 3. Audio Out •...
Page 521 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 522 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 523: Serial Port
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 524 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 525 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 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 526 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 527 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 528 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 529 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 530 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 531 Modifications, Accessories, Manuals, Support...
Page 532 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 533 OPtion 603: CDMA/CDPD MDBS Cell Site Test System, order HP Option 603 83205 Option 003 a.Replaces C-Message weighting filer, should be ordered for TACS base station test. b. Cannot be installed in HP 8921A with Option 042. c. Cannot be ordered with Option 020.
Page 534 Chapter 25, Modifications, Accessories, Manuals, Support Modifications Firmware Upgrades Table 15 Firmware Upgrades Description HP 8921A Operating System and Signaling ROMs Option 004 Tone/Digital Signaling. For HP8920A/21A with S/N 3546A and includes R98. For HP8920A/21A with S/N 3456A.
Page 535 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 M /7.5pF 10:1)
Page 536 256 KByte OTP Memory Card HP 85703A 512 KByte OTP Memory Card HP 85706A Allows rack mounting of Cellular Adapter (example: HP 83201A) to HP 8920, HP 8921. SRAM = Static Random Access Memory OTP = One Time Programmable (PROM).
Page 537 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 538 Table 17 Manuals Description Language Option HP 8921A Quick Reference Man- English 08920-90010 Quick Reference Card English 08920-90014 HP 8921 User’s Guide English 08921-90022 Instrument BASIC Lan- English E2083-90000 guage Reference Programmer’s Guide English 08920-90204 Assembly Level Repair English 08920-90168 Manual User’s Guide...
Page 539 The Radio Test Software performs automated tests on radios used in various radio communication systems. Each test package is contained on an individual memory card. The HP 11807B Cell Site Test Software performs automated tests on cell site base stations. This Software is used with the HP 8921A. Table 18...
Page 540 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 541 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 542 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 543 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 544 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 545 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 8120-1703 inches, mint gray Used in the following locations Bahrain, British Indian Ocean Territories, Brunei...
Page 546 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 547 601 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 19...
Page 548 Chapter 25, Modifications, Accessories, Manuals, Support HP Support for Your Instrument Table 19 Regional Sales Offices Asia Japan International Sales Branch Head- Sales and Service Sales and Service quarters Hewlett-Packard Asia Ltd. Yokogawa-Hewlett-Packard Ltd. Sales and Service 22-30/F Peregrine Tower 3-29-21, Takaido-Higashi Hewlett-Packard S.A.
Page 549 Error Messages...
Page 550: General Information About Error Messages
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 E2083-90000) •...
Page 551: Positive Numbered Error Messages
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 552 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 553: Ibasic Error Messages
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 554 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 555: Text Only Error Messages
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 556 HP-IB command is received. Many of the messages are displayed on the MESSAGE screen until the instrument is turned off.
Page 557 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 558 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 559 Function Required Hardware LVL_MTR (signal strength meter) A16 Receiver Assembly ROM Program TDMATEST HP 83204A Option 001 - Cellular Adapter HP 83204A Option 002 - Cellular Adapter CDPD TEST TDMA/CDPD TEST HP 83204A Option 003 - Cellular Adapter CDMA TEST...
Page 560 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 561 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 562 Error Messages...
Page 563 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 564: Table Of Contents
DC Level, 100, RF Generator screen, HP-IB, external devices, De-Emp Gain, RX Test screen, De-emphasis, HP-IB, printer, 401, ac level HP-IB, test set, 385, Detector, measurement, key, Distn, peak detector, pager, Ext Load R, AC, access channel, Address Qualifier...
Page 565 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? TX Test screen, Tests (Order of Tests) screen,...
Page 566 Index sensitivity, 423, view of, AF Freq, 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, Filter 1, Area 1 reverse control channel, reverse voice channel, Filter 2,...
Page 567 Index input, RF analyzer, 90, Signaling Encoder screen, EDACS input, spectrum analyzer, mode, B/I Delay (FOCC) manual control, 90, 421, Signaling Encoder screen, Func Gen Signaling Encoder screen, AMPS- attenuator mode, TACS mode, decoder interference, 103, Signaling Encoder screen, LTR mode, Signaling Encoder screen, NAMP- input, 90, 421, NTAC mode,...
Page 568 Index view of, decoding error message, parity, 225, 306, 308, serial data word, Call Data screen cables specifying patter to display, Access annunciator, power, sync word, Active, calibration triggering, Active annunciator, spectrum analyzer, type, 306, Connect annunciator, Call Bit screen Display Word, word sync, 306, Access annunciator,...
Page 569 Index clock radio standard, Channel CCIR2 Signaling Decoder screen, AMPS- time-of-day, radio standard, TACS mode, Clr Scr CCITT Signaling Decoder screen, NAMPS- Tests (IBASIC Controller) screen, radio standard, NTACS mode, CMAX CDCSS decoder mode Signaling Encoder screen, AMPS- Call Configuration screen, TACS mode, Cnfg External Devices AF analyzer settings,...
Page 570 DET OUT, Signaling Encoder screen, EDACS- digital testing, mode, DUPLEX OUT, Control I/O connector EXT SCOPE TRIGGER, description, HEADPHONE, Controls HP-IB, Oscilloscope screen, IQ RF IN, Spectrum Analyzer screen, MIC/ACC, counter MODULATION INPUT, ParallelPort, Counter Connection parts kit, RADIO INTERFACE,...
Page 571 Index description, mode, Signaling Encoder screen, Digi Page DC Level D (direction) mode, AF Analyzer screen, 100, Signaling Decoder screen, NMT mode, Signaling Encoder screen, EDACS Duplex Test screen, mode, RF Analyzer screen, dashes Signaling Encoder screen, LTR mode, RF Generator screen, meaning of, ACP level measurement, RX Test screen, Signaling Encoder screen, NAMP-...
Page 572 Index Call Control screen, filter, description, AF Analyzer functional block, gain, Duplex Test functional block, Display Page input level, 219, 228, 237, 248, RF Analyzer functional block, Signaling Decoder screen, Digi Page off for digital paging, RF Generator functional block, mode, off for NMT decoder, RX Test functional block,...
Page 573 Index Bursts, RF Gen Freq, FM Coupling, SINAD, EDACS decoder mode Off Time, SNR, AF Anl In, On Time, Tune Freq, Arm Meas, Pre-Emp, Tune Mode, Data, Send, TX Freq Error, Input Level, TX Frequency, Send Mode, Polarity, Standard, TX Power, Radio/Repeater, Stop, view of,...
Page 574 Index CDSCC, Signaling Decoder screen, NMT mode, data rate, FCC mobile station control word 2 digital paging, exponents order, DTMF, entering numbers, voice channel assignment, EDACS, Ext Load R, FCC mobile station control, word 1, function generator, AF Analyzer screen, FF at End effect of Audio In Lo, LTR,...
Page 575 Index Signaling Decoder screen, Tone Seq First Frame data rate, Signaling Decoder screen, NMT mode, filler data, AMPS-TACS/NAMPS- mode, NTACS, Freq (marker) first word of called address, menu, Spectrum Analyzer screen, floating input outputting, Freq Channel Information at AUDIO IN LO, FOCC message Tests (Main Menu) screen, data format, AMPS-TACS/NAMPS-...
Page 576 Index frequency, 296, Signaling Encoder screen, Digi Page mode, output port, 296, 445, 456, gain function generator reference frequency, automatic control, waveform, generator, tracking between ANT IN and device-under- Function Generator decoder mode amplitude, test, AF Anl In, frequency, between DUPLEX OUT and device- frequency offset, Arm Meas, under-test,...
Page 577 Index HP-IB control, HP-IB operation Handoff I/O Config squelch effects, Call Control screen, 123, 142, Radio Interface screen, hum and noise handoff I/O Configure screen measuring, mobile station to new voice channel, Data Length, HP-IB Address, Handshake IBASIC Echo, Signaling Encoder screen, EDACS...
Page 578 Index NAMPS-NTACS, 222, RF Analyzer screen, AF Analyzer screen, TX Test screen, input impedance endcoder and decoder radio standards, IF filter bandwidth selecting, selecting, 295, 421, Input Level high-power/low-power measurements, If Unit-Under-Test Fails Signaling Decoder screen, AMPS- Tests (Execution Conditions) screen, TACS mode, Range Hold and other fields, Signaling Decoder screen, CDCSS...
Page 579 Index CURSOR CONTROL, SQUELCH, JTACS k1 through k5, VOLUME, radio standard, k1’ through k3’, simulated system, key sequences for front-panel controls, 81, keyboard external, keying effect on amplitude, 291, 433, 444, 455, external transmitter, 90, 294, 420, keys $Leftarrow$, ADRS, backspace, CANCEL, CONFIG,...
Page 580 Index ID 1, Signaling Encoder screen, EDACS 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 581 Index frequency, DTMF, measurement accuracy, gain control for, frequency, transmitter, 93, 107, 298, Main Menu accuracy, zeroing for, 425, 437, Tests (Channel Information) screen, accuracy, zeroing power for, 94, 427, hum and noise, 472, LTR data rate, Tests (Execution Conditions) screen, arming, analyzer, 221, 229, 234, 238, mobile station receiver, 243, 249, 254, 266,...
Page 582 Index decoding LTR data, digital paging, to view, from mobile station handoff, error, mobile station error, buffer overflow, to view, from mobile station origina- connecting to test set, extended address word, order, tion, contol channel, extended address word, voice channel to view, from mobile station page, receiver test procedure, assignment,...
Page 583 Index System Identity, Model Test Mode, names Print Configure screen, 66, Traffic Chan. Msg., printout, 401, Tests (External Devices) screen, Traffic Channel, registers, Tests (Printer Setup) screen, undisplayed controls, NAMPS-NTACS modifications view of, control channel decoder, MPT 1327 tests hardware, forward control channel, modulation manual,...
Page 584 Index Spectrum Analyzer screen, view of, AFGen2 To, narrowband Alarm Level High, Nordic mobile telephone decoder, signaling standard, Alarm Level Low, decoder, encoder, signaling standard, Area #, encoder, for 900 MHz system, Audio Out, Normalize narrow-band advanced mobile phone ser- basic operation, Spectrum Analyzer screen, Batt Save,...
Page 585 Index Spectrum Analyzer screen, input attenuator, 103, level, markers, Output Results For octal code marker types, Tests (Execution Conditions) screen, for CDCSS encoder, markers, level, Off Time resolution, Tests (Printer Setup) screen, Signaling Decoder screen, DTMF scale, Output Results To mode, signal source, Tests (Execution Conditions) screen,...
Page 586 Index password, peak Signaling Encoder screen, NAMP- Page hold, spectrum analyzer, NTAC mode, Call Control screen, spectrum analyzer marker, polarity Call Data screen, 142, units, 340, 433, radio interface strobe, page peak detector, 101, 104, 293, Port/Sweep (Tracking Gen) selecting, signal source, Spectrum Analyzer screen, Page annunciator...
Page 587 Index PREV key, 292, 293, 424, 432, 433, 436, 443, print 444, 446, 455, 498, 499, 500, radio screens, 66, Proc Save/Delete Procedure connecting, Print All Tests (Main Menu) screen, LTR trunking data, Tests (Channel Information) screen, Procedure Library test software, 472, Tests (Save/Delete Procedure) screen, Radio Frequency Analyzer screen...
Page 588 Index Res BW ZVEI1, receive pace, 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, reference response timing...
Page 589 TX Frequency, SNR, TX Power, TX Freq Error, dectector, 101, 293, TX Frequency, measurement, 97, 431, TX Pwr Meas (HP 8920B), TX Pwr Zero, TX Power, units, 340, 433, view of, view of, RF auto-tuning, 92, 297, 425, RF In/Ant...
Page 590 Index Distn, using screen control keys, Ext Load R, second word of called address, s, 326, Filter 1 and Filter 2, SECURE_IT, S, battery save, functional block diagram, securing files, sampling Output Port, Select Procedure Filename AF counter, priority settings, Tests (Main Menu) screen, RF counter, Select Procedure Location...
Page 591 Index Signaling Decoder screen, AMPS-TACS Signaling Encoder screen, Tone Seq base, mode, beeper volume, mode Sensitivity changing, field, AF Anl In, RF Analyzer screen, date, Arm Meas, Spectrum Analyzer screen, default, 73, Channel, sensitivity meter, Data (hex), power-on, Gate Time, adverse effects on measurements, 423, recalling, Input Level,...
Page 592 Index Mode, CDCSS, On Time, Input Level, 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, Trig Level, Mode, MPT 1327, Arm Meas,...
Page 593: Table Of Contents
Index Bursts, Data Rate, Working Channel, RXFrequency, 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, Audio Out, FM Coupling, Pager Code, Pager NumericMessage, FM Coupling,...
Page 594 Index Span Traffic Channel (Main),Number, mode, 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, Audio Out, Signaling Decoder screen, EDACS speaker mode,...
Page 595 Stop Signaling Decoder screen, NMT mode, digital decoding, Signaling Encoder screen, AMPS- TACS mode, Strobe Pol effects on decoder, effects on HP-IB operation, Signaling Encoder screen, CDCSS Radio Interface screen, effects on oscilloscope, mode, Sub-Audible Dev effects on remote operation,...
Page 596 Index Model, Signaling Decoder screen, DTMF Options, TA1, main traffic area, mode, Output Heading, TA2, alternate traffic area, Signaling Decoder screen, Tone Seq view of, talk & listen, mode, Tests (IBASIC Controller) screen, tariff class information, symbol Clr Scr, TC1, main traffic channel, Continue, for tone sequence, 239, 283, TC2, alternate traffic channel,...
Page 597 Index Symbol Definition, FF at End, for printout, 401, 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 tone length Japan Output Results For, Output Results To,...
Page 598 Duplex Test screen, RF Generator screen, TX Test screen, mode, RF Analyzer 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 599 Voltage TX Frequency, deleting, global assignment, Service screen, TX Power, deleting, local assignment, voltage TX Pwr Meas (HP 8920B), example, measurement, 97, 431, TX Pwr Zero, explanation, RF, across 50 ohm load, Type global, assignment, RF, emf (open circuit),...
Page 600 Index mode, W (watts) Xmt Pace displaying results in, I/O Configure screen, Waveform Xon/Xoff, 386, Signaling Encoder screen, Func Gen mode, waveform Gaussian noise, selecting, sine, square, triangle, universal noise, wideband decoder, signaling standard, encoder, signaling standard, word abbreviated address, extended address, first word of called address, reverse voice channel order confirma-...
Page 601 Index YES key, zero crossing detecting, zero reference tranmitter power, 94, 427, zeroing DCFM, measurement offset, power meter, 94, 130, 427, ZVEI1 radio standard, ZVEI2 radio standard,...

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