Anritsu MS2711B User Manual
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Anritsu MS2711B User Manual

Anritsu MS2711B User Manual

Hand held spectrum analyzer for measuring, monitoring and analyzing signal environments
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MS2711B
Hand Held
Spectrum Analyzer
User's Guide
Hand-Held Spectrum Analyzer for Measuring,
Monitoring and Analyzing Signal Environments

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  • Page 1 MS2711B Hand Held Spectrum Analyzer User's Guide Hand-Held Spectrum Analyzer for Measuring, Monitoring and Analyzing Signal Environments...
  • Page 2 Anritsu Company. UPDATES Updates to this manual, if any, may be downloaded from the Anritsu internet site at: http://www.us.anritsu.com.

  • Page 4: Table Of Contents

    ESD Cautions ....... . . 1-8 Anritsu Service Centers ......1-9 Chapter 2 - Quick Start Guide Introduction .
  • Page 5 Chapter 4 - Measurement Fundamentals Introduction ........4-1 Measurement Fundamentals.

  • Page 6: Chapter 1 - General Information

    10 measurement setups. A large, high-resolution liquid crystal display (LCD) provides easy viewing in a variety of lighting conditions. The Anritsu HHSA is capable of up to two and one-half hours of continuous operation from a fully charged battery and can be operated from a 12.5 Vdc source (which will also simultaneously charge the battery).

  • Page 7: Options

    Chapter 1 General Information The following standard accessories are supplied with the MS2711B: · Soft Carrying Case · AC-DC Adapter · Automotive Cigarette Lighter 12 Volt DC Adapter · CD ROM containing the Software Tools program. · Serial Interface Cable (Null Modem Type) ·...

  • Page 8: Optional Accessories

    Chapter 1 General Information Optional Accessories Optional Accessories are shown in Table 1-1. Table 1-1. Optional Accessories Part Number Description 5400-71N50 RF Detector, N(m), 50 ohm, 1 to 3000 MHz 42N50A-30 Attenuator, 30 dB, 50 Watt, bi-directional 15NN50-1.5C Test Port Cable Armored, 1.5 meter, N(m) to N(m), 6 GHz 15NN50-3.0C Test Port Cable Armored, 3.0 meter, N(m) to N(m), 6 GHz 15NN50-5.0C...
  • Page 9 Spare Automotive Cigarette Lighter/12 Volt DC adapter 800-441 Spare Serial Interface Cable 551-1691 USB to Serial Adapter 760-215A Transit Case for Anritsu Hand Held Spectrum Analyzer 633-27 Rechargeable Battery, NiMH 2300-347 Anritsu Hand Held Spectrum Analyzer Software Tools 10580-00074 Anritsu HHSA User’s Guide, Model MS2711B...

  • Page 10: Performance Specifications

    Chapter 1 General Information Performance Specifications Performance specifications are provided in Table 1-2. Unless otherwise noted, specified values are obtained after a five minute warmup period at a constant ambient temperature. The typical values are provided for reference, and are not guaranteed. Table 1-2.
  • Page 11 Chapter 1 General Information Table 1-2. Performance Specifications (2 of 3) Description Value Display Type Monochrome LCD with back light capability 640 ´ 480 Resolution Marker Modes Standard delta marker to peak marker to center (M1 to M4 only) marker to valley (M5 & M6 only) Memory Trace Storage 200 traces...
  • Page 12 Chapter 1 General Information Table 1-2. Performance Specifications (3 of 3) Description Value Preamplifier Frequency Range 1.0 MHz to 3.0 GHz Amplitude Gain 20 dB, 1.0 MHz to 3.0 GHz typical Measurement Range –25 dBm to –115 dBm (typical with preamplifier on) Maximum Input Level +13 dBm, without damage ±50 VDC...

  • Page 13: Preventive Maintenance

    JEDEC-625 (EIA-625), MIL-HDBK-263, and MIL-STD-1686, which pertain to ESD and ESDS devices, equipment, and practices. As these apply to the MS2711B, it is recommended to dissipate any static charges that may be present before connecting the coaxial cables or antennas to the MS2711B. This may be as simple as temporarily attaching a short or load device to the cable or antenna prior to at- taching to the MS2711B.

  • Page 14: Anritsu Service Centers

    Chapter 1 General Information Anritsu Service Centers Table 1-3 provides a listing of the Anritsu Service Centers. Table 1-3. Anritsu Service Centers UNITED STATES GERMANY SOUTH AFRICA ANRITSU COMPANY ANRITSU GmbH ETESCSA 685 Jarvis Drive Grafenberger Allee 54-56 12 Surrey Square Office Park...

  • Page 15: Chapter 2 - Quick Start Guide

    The Anritsu MS2711B HHSA can also be operated from a 12.5 Vdc source (which will also simultaneously charge the battery). This can be achieved with either the Anritsu AC-DC Adapter (P/N 40-115) or 12.5 Vdc Automotive Cigarette Lighter Adapter (P/N 806-62).

  • Page 16: Front Panel Overview

    Chapter 2 Quick Start Guide The Anritsu HHSA is now ready for operation. No additional keystrokes or installation are required. For information on making measurements with the Anritsu HHSA, refer to “Making a Basic Measurement,” on page 2-15. For advanced applications, refer to Chapter 4, Measurement Fundamentals, Chapter 6, Preamplifier, and Chapter 7, Tracking Genera- tor.

  • Page 17: Display Overview

    Chapter 2 Quick Start Guide Display Overview Figure 2-3 illustrates some of the key information areas of the MS2711B display. TITLE BAR SWEEP MODE RF INPUT PORT IMPEDANCE CURRENT MENU DETECTION METHOD PREAMPLIFIER STATE MESSAGE AREA Figure 2-3. Display Overview Figures 2-4 through 2-7 illustrate the menu structures and soft key labels for each menu se- lection.
  • Page 18 Chapter 2 Quick Start Guide MODE MENU SOFT KEYS SPECTRUM ANALYZER FREQ/SPAN CENTER SPAN START STOP (DEFAULT) CENTER START STOP SPAN SPAN SPAN EDIT FULL ZERO DOWN BACK 1-2-5 1-2-5 AMPLITUDE SCALE ATTEN UNITS LEVEL LEVEL OFFSET ATTEN AUTO MANUAL DYNAMIC BACK dBmV...
  • Page 19 Chapter 2 Quick Start Guide MODES MENU SOFT KEYS TRACKING GENERATOR FREQ/SPAN FREQ CENTER SPAN START STOP TG-FAST TUNE OFFSET CENTER FREQ START OFFSET STOP SPAN SPAN SPAN EDIT FULL ZERO DOWN BACK 1-2-5 1-2-5 AMPLITUDE SCALE ATTEN UNITS LEVEL OUTPUT LEVEL OFFSET...
  • Page 20 Chapter 2 Quick Start Guide MODE MENU SOFT KEYS SPECTRUM A - B A + B NORMAL- TRACE TRACE ANALYZER TRACE A->B -> -> (DEFAULT) NORMAL- TRACE RESET BACK ON/OFF RECALL TRACE VIEW CLEAR TRACE BACK ->B CHANNEL FIELD MEAS ACPR PREAMP MORE...
  • Page 21 M3&M4 M3&M4 SELF Language OPTIONS CLOCK 50 W 75 W TEST ENGLISH CHANGE DATE OPTIONS PRINTER BACK FORMAT CLOCK HOUR MINUTE MONTH YEAR BACK ANRITSU OTHER 75 W 12N50- ADAPTER BACK OFFSET Figure 2-7. Keypad Hard Keys Menu Structure (continued)

  • Page 22: Test Panel Connectors

    RS232 DB9 interface to a COM port on a personal computer (for use with the Interface Anritsu Software Tools program). Also provides a serial interface to a printer. 50 W RF input for spectrum analysis and stimulus-response measurements. RF In RF Out 50W RF output for Tracking Generator measurements (Option 20).

  • Page 23: Making Spectrum Analyzer Measurements

    Chapter 2 Quick Start Guide Making Spectrum Analyzer Measurements Required Equipment MS2711B Hand Held Spectrum Analyzer Test Port Extension Cable, Anritsu 15NNF50-1.5C Selecting Spectrum Analyzer Mode Step 1. Press the ON/OFF key. Step 2. Press the MODE key and use the Up/Down arrow key to select Spectrum Ana- lyzer mode.
  • Page 24 Chapter 2 Quick Start Guide Selecting the Amplitude Step 1. Press the AMPLITUDE key. Step 2. Press the UNITS soft key and select the desired units from the soft keys pre- sented. Press the BACK soft key to return to the Amplitude menu. Step 3.
  • Page 25 Chapter 2 Quick Start Guide Detection Method Each display point represents some number of measurements combined by a detection method. The number of measurements per display point is affected by the span and the res- olution bandwidth. The three available detection methods are Positive Peak, Average, and Negative Peak.
  • Page 26 Chapter 2 Quick Start Guide Step 5. Repeat the steps for markers M2, M3, M4, M5 and M6. Adjusting Limits The MS2711B offers two types of limits: a single horizontal limit line and segmented lim- its. Adjusting a Single Limit Step 1.
  • Page 27 Step 13. When the final segment is defined, press the EDIT soft key again to end the edit- ing process. The MS2711B does not allow overlapping limit segments of the same type. That is, two up- per limit segments cannot overlap and two lower limit segments cannot overlap.
  • Page 28 Setting the System Impedance The MS2711B RF In and RF Out ports both have 50 W impedance. The firmware of the MS2711B can compensate for a 50 to 75 W adapter on the RF In port.

  • Page 29: Making A Basic Measurement

    0 <DEFAULT> to recall the factory preset state. Step 1. Press the ON/OFF key, then the ENTER key when prompted. Step 2. Connect a signal generator to the input of the Anritsu HHSA and configure it to provide a -10 dBm, 900 MHz signal.
  • Page 30 Chapter 2 Quick Start Guide Set the center frequency Step 1. Press the FREQ/SPAN key. Step 2. Press the CENTER frequency soft key. NOTE: To set the center frequency to 900 MHz, use the numerical keypad to the right of the display. The data keys allow you to select the exact numeric value of the active function, which in this example is the center frequency.
  • Page 31 Automatically Set Full Span Press the FULL soft key. The span will automatically be set to the full range of the MS2711B. Automatically Set Zero Span Press the ZERO soft key. The span will automatically be set to zero, centered at the current center frequency.
  • Page 32 Chapter 2 Quick Start Guide Set the Amplitude Generally, placing the signal peak at the reference level provides the best measurement ac- curacy. The following steps will adjust the signal peak to the reference level (Figure 2-10). Step 1. Press the AMPLITUDE key. Step 2.
  • Page 33 Chapter 2 Quick Start Guide Activate the Marker The marker reads both the frequency and the amplitude, and it displays these values in the message area at the bottom of the display. In this case, the marker will read 900 MHz and –10.00 dBm, as shown in Figure 2-11.

  • Page 34: Save And Recall Display

    Chapter 2 Quick Start Guide Save and Recall Display The MS2711B can store up to 200 trace displays in internal memory. Stored traces can be recalled to the display or uploaded to a PC using the Software Tools program (see Chapter 8, Software Tools).
  • Page 35 Chapter 2 Quick Start Guide Set the switches, SW1, SW2, and SW3, on the Seiko DPU-414 thermal printer as follows: Switch Printer Setup Step 1. Connect the printer as shown in Figure 2-12. SEIKO PRINTER SERIAL CABLE 2000-756 HP 350 DESKJET SERIAL-TO-PARALLEL INTERFACE CABLE...

  • Page 36: Battery Information

    The battery can be charged while installed in the HHSA. Step 1. Turn the HHSA off. Step 2. Connect the AC-DC adapter (Anritsu part number: 40-115) to the HHSA DC power input port. Step 3. Connect the AC adapter to a 120 VAC or 240 VAC power source as appropriate for your application.

  • Page 37: Determining Remaining Battery Life

    A blinking red light indicates less than 13 VDC is being supplied to the charger stand. Check that the correct AC charger adapter is connected to the charger stand. If the battery fails to charge, contact your nearest Anritsu Service Center. Determining Remaining Battery Life When the AC-DC adapter is disengaged, a battery indicator symbol is continuously dis- played at the top-left corner of the display (Figure 2-13).
  • Page 38 Chapter 2 Quick Start Guide During operation, the battery condition can be viewed by pressing the SYS key and select- ing the SELF TEST soft key. The battery condition will be displayed as a percentage of charge remaining. SELFTEST VOLTAGE ..BATTERY 11.1V TEMPERATURE .
  • Page 39 · Recharge the battery only in the HHSA or in an Anritsu approved charger. · When the HHSA or the charger is not in use, disconnect it from the power source.

  • Page 40: Symbols

    Self Test At turn-on, the Anritsu HHSA runs through a series of quick checks to ensure the system is functioning properly. Note that the battery voltage and temperature are displayed in the lower left corner below the self test message. If the battery is low, or if the ambient temper- ature is not within the specified operational range, Self Test will fail.

  • Page 41: Error Messages

    Contact your near- est Anritsu Service Center. NOTE: A listing of current Anritsu service centers is given in Table 1-3 , page 1-9. Operation Error Messages The following tables list possible error messages that could occur during operation of the HHSA.
  • Page 42 SELECT A PRINTER CANNOT ZERO Attempting to perform a Power Monitor zero adjust function with no NO DETECTOR RF detector connected to the Anritsu HHSA. INSTALLED CANNOT ZERO Attempting to perform a Power Monitor zero adjust function with an INPUT SIGNAL input of greater than –20 dBm.

  • Page 43: Using The Soft Carrying Case

    Using the Soft Carrying Case The soft carrying case has been designed such that the strap can be unsnapped to allow the case to be easily oriented horizontally; thus allowing the Anritsu controls to be more easily accessed (Figure 2-16).

  • Page 44: Chapter 3 - Key Functions

    Key Functions Introduction This chapter provides a description of the Anritsu MS2711B Hand Held Spectrum Analyzer keypad controls. There are two kinds of keys available on the MS2711B front panel: Hard Keys and Soft Keys. Hard Keys Hard keys are those keys on the front panel that are labeled in black and blue and perform specific functions as explained below.
  • Page 45 ENTER Implements the current action or parameter selection. Turns the Anritsu HHSA on or off. When turned on, the last saved system state is restored. If the ESCAPE/CLEAR key is held down while the ON/OFF key is pressed, the factory preset state will be restored.
  • Page 46 CONT gle sweep mode. The default is continuous sweep. When single sweep is selected, the Anritsu HHSA will sweep once and hold until activated again by pressing the ENTER key. The currently selected sweep mode appears on the LCD. Single sweep mode can be used to conserve battery power.

  • Page 47: Soft Keys

    Pressing the MODE key activates a menu of mode related choices. Use the Up/Down ar- row key to highlight the desired mode and press ENTER to select. The selections available on this menu will vary depending upon which options are installed in the MS2711B. SPECTRUM Selects Spectrum Analyzer mode of operation.
  • Page 48 Enter the desired scale using the keypad or up/down arrow key. Press ENTER to accept. ATTEN Sets the Anritsu HHSA input attenuator so that it is either coupled auto- matically to the reference level (AUTO), manually adjustable (MAN- UAL), or dynamically controlled (DYNAMIC).
  • Page 49 Chapter 3 Key Functions IMPORTANT! Attenuation is normally a coupled function and is automatically adjusted when the reference level changes. The reference level will not change however, when the attenuator changes. The attenuator should be adjusted so that the maximum signal amplitude at the input mixer is –30 dBm or less. For example, if the reference level is + 20 dBm, the attenuation should be 50 dB for an input signal of –30 dBm at the mixer (+20 –...
  • Page 50 Chapter 3 Key Functions Bandwidth/Sweep Menu Pressing BW/SWEEP activates a menu of bandwidth and sweep related functions. Use the corresponding softkey to select the desired function. Sets the resolution bandwidth so that it is either coupled automatically to the span (AUTO) or manually adjustable (MANUAL) using the Up/down arrow key.
  • Page 51 Chapter 3 Key Functions Trace Menu Pressing the TRACE key activates a menu of trace related functions. Use the corresponding softkey to select the desired trace function. NOTE: For this function, Trace A is always the runtime trace, and Trace B is al- ways a saved trace.
  • Page 52 READOUT selection in the UNITS menu. CENTER FREQ – Activates the center frequency function, and sets the center frequency of the Anritsu HHSA for the channel power measure- ment. INT BW – Sets the integration bandwidth for channel power measure- ment.
  • Page 53 Press this key to turn the preamplifier on and off (if Option 8 is installed). NOTE: If the MS2711B is equipped with the Preamplifier option (Option 8) and the preamplifier is ON, the RF power in should be less than or equal to –50 dBm (with 0 dB of internal attenuation and never more than –25 dBm regard-...
  • Page 54 Chapter 3 Key Functions When the value is 0 and is scrolled down, the frequency will be adjusted up by 1 kHz and the BFO value will be set to 128. If the value is 255 and is scrolled up, the frequency will be adjusted down by 1 kHz and the BFO value will be set to 128.
  • Page 55 Chapter 3 Key Functions SEGMENT 1 - View/edit the lower limit segment 1 SEGMENT 2 - View/edit the lower limit segment 2 SEGMENT 3 - View/edit the lower limit segment 3 SEGMENT 4 - View/edit the lower limit segment 4 SEGMENT 5 - View/edit the lower limit segment 5 BACK - Return to the previous menu.
  • Page 56 Chapter 3 Key Functions Selects the M6 marker parameter and opens the M6 marker second level menu with M6 highlighted. ALL OFF Turns off all markers. Markers Second Level Menu The markers second level menu is used to turn the markers on or off, and to edit marker pa- rameters and values.
  • Page 57 Toggles between continuous and single sweep modes, as indicated to the left side of the dis- play. The default is continuous sweep. When single sweep is activated, the Anritsu HHSA will sweep once and hold until a new trace is activated by pressing the ENTER key. Single sweep mode can be used to conserve battery power.
  • Page 58 Chapter 3 Key Functions ANRITSU 12N50-75B - Sets the loss setting for the Anritsu 12N50-75B adapter. Pressing this soft key will compensate 7.5 dB for the loss of the adapter. OTHER ADAPTER OFFSET – This key allows the users to enter other adapter offset values.
  • Page 59 Chapter 3 Key Functions Power Monitor Menu When the mode of operation is changed to Power Monitor, the power monitor menu provides for setting power monitor parameters. UNITS Toggles between dBm and Watts. Turns relative mode OFF, if currently ON. If Relative mode is currently OFF, turns it ON and causes the power level to be measured and saved as the base level.

  • Page 60: Chapter 4 - Measurement Fundamentals

    This chapter demonstrates spectrum analyzer measurement techniques using the Anritsu HHSA, with measurement techniques and examples of typical applications. Each applica- tion focuses on different features of the Anritsu HHSA. Measurement applications and pro- cedures covered in this section include:...
  • Page 61 “smeared” look to it, with the spectral lines being wider than normal and shifted to the right. Fortunately, the Anritsu Hand Held Spectrum Analyzer has mechanisms designed into it that unburden the user from having to calculate the sweep rate.
  • Page 62 Connect two signal sources to the spectrum analyzer input through a signal combiner/split- ter and set the frequency of one source to 900.0 MHz and the other source to 900.030 MHz. Set both sources to the same amplitude, preferably –20 dBm. On the MS2711B HHSA: Step 1. Set attenuator coupling to AUTO.
  • Page 63 Chapter 4 Measurement Fundamentals It should be difficult to discern the presence of two signals. Figure 4-1. shows the results of the example using a signal combiner/splitter with a loss of 6 dB. Figure 4-1. Measurement of Two Signals Having Equal Amplitudes , RBW = 30 kHz Step 6.
  • Page 64 Chapter 4 Measurement Fundamentals Measurement of Two Signals Having Unequal Amplitudes Typically, in real world environments, closely spaced signals do not have equal amplitudes. Often, the difference between closely spaced signals can be as much as –60 dB. To resolve two signals of unequal amplitude, the resolution bandwidth must be less than or equal to the frequency separation of the two signals (the same as resolving two equal amplitude signals).
  • Page 65 Chapter 4 Measurement Fundamentals Step 6. Change the frequency in the second source from 1900.100 MHz to 1900.050 MHz gradually and observe the effect. Figure 4-4 shows the results with the two signals spaced 50 kHz apart using a signal combiner/splitter with a loss of 6 dB. Figure 4-4.
  • Page 66 It also demonstrates setting a signal to center frequency using a marker. Example Step 1. Reset the MS2711B to the factory default settings if a known starting state is de- sired. If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF key.
  • Page 67 Chapter 4 Measurement Fundamentals Step 16. Press the MARKER key and select the M2 soft key. Step 17. Press the EDIT soft key to turn Marker M2 ON and use Up/down arrow key to place Marker M2 at the center of the second harmonic. Press ENTER to set the marker position.
  • Page 68 It shows how to tune the signal on the spectrum analyzer display. Amplitude Modulation Step 1. Reset the MS2711B to the factory default settings if a known starting state is de- sired. If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF key.
  • Page 69 50 kHz, carrier power to –10 dBm, and deviation to 25 kHz. Step 5. Set the center frequency of the MS2711B to 100 MHz, span to 500 kHz, resolu- tion bandwidth to 10 kHz, and video bandwidth to 1 kHz.
  • Page 70 AM/FM demodulator. Example Step 1. Reset the MS2711B to the factory default settings if a known starting state is de- sired. If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF key.
  • Page 71 Chapter 4 Measurement Fundamentals Step 8. Position Marker 1 on the signal of interest. If the signal of interest is the highest in amplitude, press MARKER TO PEAK directly, then MARKER FREQ TO CENTER to center the peak signal on the display. Step 9.
  • Page 72 Chapter 4 Measurement Fundamentals Example 5: Field Strength Measurements All antennas have loss or gain that can cause errors in measurements. The MS2711B can correct for antenna loss or gain errors using Field Strength Measurements. The antenna factors must be uploaded to the MS2711B using the Anritsu Software Tools provided with the unit.
  • Page 73 To aid users in establishing limits, the Anritsu HHSA features both single limit and multi- ple limit functions. Example Step 1. Reset the MS2711B to the factory default settings if a known starting state is de- sired. If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF key.
  • Page 74 Chapter 4 Measurement Fundamentals Figure 4-11 shows the resulting display. The mask created in this example serves as an up- per bound on the measurement results. Any of the data points appearing above the line indi- cates a failed measurement. Figure 4-11.
  • Page 75 The MS2711B HHSA can be used to compare frequency spectrums. Example: Step 1. Reset the MS2711B to the factory default settings if a known starting state is de- sired. If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF key.

  • Page 76: Chapter 5 - Field Measurements

    Test Port extension cable, Anritsu 15NNF50 – 1.5C Procedure Step 1. Reset the MS2711B to the factory default settings if a known starting state is de- sired. If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF key.
  • Page 77 Chapter 5 Field Measurements Step 3. If the MS2711B is not currently in Spectrum Analyzer mode, press the MODE key, scroll to SPECTRUM ANALYZER mode, and press ENTER. Step 4. Select the CENTER soft key and enter the center frequency of the measurement using the keypad.

  • Page 78: Channel Power Measurement

    Test Port extension cable, Anritsu 15NNF50 – 1.5C Procedure Step 1. Reset the MS2711B to the factory default settings if a known starting state is de- sired. If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF key.
  • Page 79 An hourglass is displayed as the calculations are performed. NOTE: The channel span must be set equal to or larger than the integration bandwidth. If not, MS2711B will set the channel span equal to the integration bandwidth. When the integration bandwidth and channel span are set to the same value, the MS2711B uses all the sampling points for integration, providing the most accurate measurements.

  • Page 80: Gsm Channel Power Measurement

    Test Port extension cable, Anritsu 15NNF50 – 1.5C Procedure Step 1. Reset the MS2711B to the factory default settings if a known starting state is de- sired. If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF key.
  • Page 81 An hourglass is displayed as the calculations are performed. NOTE: The channel span must be set equal to or larger than the integration bandwidth. If not, MS2711B will set the channel span equal to the integration bandwidth. When the integration bandwidth and channel span are set to the...

  • Page 82: Amps Channel Power Measurement

    Test Port extension cable, Anritsu 15NNF50 – 1.5C Procedure Step 1. Reset the MS2711B to the factory default settings if a known starting state is de- sired. If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF key.
  • Page 83 An hourglass is displayed as the calculations are performed. NOTE: The channel span must be set equal to or larger than the integration bandwidth. If not, MS2711B will set the channel span equal to the integration bandwidth. When the integration bandwidth and channel span are set to the same value, the MS2711B uses all the sampling points for integration, providing the most accurate measurements.

  • Page 84: Adjacent Channel Power Ratio

    Test Port extension cable, Anritsu 15NNF50 – 1.5C Procedure Step 1. Reset the MS2711B to the factory default settings if a known starting state is de- sired. If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF key.
  • Page 85 Average. Solid vertical lines are drawn on the display to indicate the main channel. Dashed vertical lines define the adjacent channels. The MS2711B will display the measurement results in the message area. Figure 5-4 displays the results of the measurement using a CDMA signal generator with an output power level of –25 dBm.

  • Page 86: Gsm Adjacent Channel Power Measurement

    Test Port extension cable, Anritsu 15NNF50 – 1.5C Procedure Step 1. Reset the MS2711B to the factory default settings if a known starting state is de- sired. If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF key.
  • Page 87 Chapter 5 Field Measurements Figure 5-5 shows the results of the measurement using a GSM signal source with an output power level of –35 dBm. Figure 5-5. GSM Adjacent Channel Power Measurement Adjacent Channel Power Ratio is a constant measurement. Once it is turned on, it will re- main on until it is turned off by pressing the MEASURE ON/OFF key again.

  • Page 88: Amps (Tdma) Adjacent Channel Power Measurement

    Test Port extension cable, Anritsu 15NNF50 – 1.5C Procedure Step 1. Reset the MS2711B to the factory default settings if a known starting state is de- sired. If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF key.

  • Page 89: Out-Of-Band Spurious Emissions

    Test Port extension cable, Anritsu 15NNF50 – 1.5C Procedure Step 1. Reset the MS2711B to the factory default settings if a known starting state is de- sired. If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF key.
  • Page 90 Chapter 5 Field Measurements Step 8. Press the MARKER key and press the M1 soft key. Step 9. Press the EDIT soft key. Use the Up/down arrow key to move the marker over one of the spurs. Press the ENTER key to set the marker. Step 10.

  • Page 91: In-Band/Out-Of-Channel Measurements

    Test Port extension cable, Anritsu 15NNF50 – 1.5C Procedure Step 1. Reset the MS2711B to the factory default settings if a known starting state is de- sired. If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF key.
  • Page 92 In-band Spurious Measurement NOTE: The resolution bandwidth of a spectrum analyzer is determined by the intermediate frequency (IF) filter bandwidth. The MS2711B traces the shape of the IF filter as it sweeps past a signal. Therefore, if two equal-amplitude signals...

  • Page 93: Field Strength

    Step 1. Use the Antenna Editor feature of the Software Tools to define an antenna (see page 8-8). Step 2. Reset the MS2711B to the factory default settings if a known starting state is de- sired. If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF key.
  • Page 94 Chapter 5 Field Measurements Figure 5-9 shows the results of a measurement using an R&S HE200 antenna. Figure 5-9. Field Strength Antenna Calculations The following is a list of various antenna calculations should you find it necessary to con- vert from one to another: Conversion of signal levels from W to V in a 50-ohm system: where: P = power in Watts...

  • Page 95: Making Power Measurements With The Power Monitor (Option 5)

    Measuring High Input Power Levels Step 1. Insert an attenuator between the DUT and the RF detector, sufficient to insure that the input power to the MS2711B is no greater than +20 dBm. Refer to Fig- ure 5-10. Step 2. Press the OFFSET soft key.
  • Page 96 Chapter 5 Field Measurements ATTENUATOR RF DETECTOR PORT (Option 5) MS2711B ESCAPE CLEAR TRACE MEAS SAVE RECALL SETUP SETUP LIMIT MARKER ENTER SAVE RECALL SINGLE DISPLAY CONT DISPLAY PRINT MODE FREQ / SPAN AMPLITUDE BW/SWEEP MS2711B Figure 5-10. Power Monitor Measurement Setup...

  • Page 97: Dynamic Attenuation Control

    A PCS band Pass Filter, such as K & L Electronics 5DR30-921 or equivalent A PCS band antenna Procedure Step 1. Reset the MS2711B to the factory default settings if a known starting state is de- sired. If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF key.
  • Page 98 During this time, the MS2711B will be adjusting parameters and collecting data to determine the optimal configuration for the current input signal. Measurement results will not be dis- played on the screen until the correct combination of parameters is determined.
  • Page 99 Chapter 5 Field Measurements Figure 5-12 shows the results with dynamic attenuation enabled. Note that in this case, the optional preamplifier was automatically turned on. Figure 5-12. Dynamic Attenuation NOTE: Decreasing the VBW to 100 kHz or lower will reduce noise around PCS signals.

  • Page 100: Chapter 6 - Preamplifier

    Preamplifier Operation To turn the preamplifier on or off: Step 1. Reset the MS2711B to the factory default settings if a known starting state is de- sired. If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF key.

  • Page 101: Preamplifier Measurement Example

    When the key is pressed, a Recall Trace selection box appears on the display. Select setup location 0 to recall the factory preset state. Step 2. Connect the RF output of the signal source to the RF In port of the MS2711B. Step 3. If necessary, set the MS2711B to Spectrum Analyzer mode.
  • Page 102 Chapter 6 Preamplifier Figure 6-1 shows the measurement results with the preamplifier off. Figure 6-1. Preamplifier OFF Step 12. Turn the preamplifier on. When the preamplifier is ON, the word AMP should appear in the lower left corner of the display. The displayed noise level should be lowered by approximately 20 dB on the dis- play, and the signal should appear on top of the displayed noise.

  • Page 103: Chapter 7 - Tracking Generator

    In the Tracking Generator - Fast Tune mode, the MS2711B selects the best combination of RBW and VBW settings and makes only one measurement per display point to provide a faster measurement.
  • Page 104 Chapter 7 Tracking Generator Tracking Generator Output Level To select the TG output level, press the AMPLITUDE key and select the TG OUTPUT LEVEL soft key. Use the Up/Down arrow key or the keypad to enter the desired TG output level (0.0 to –60.0 dBm) and press ENTER to confirm the entry.
  • Page 105 Step 7. Press the TRACE key and select the NORMALIZE softkey. After the MS2711B has finished sweeping over the frequency range, a straight line should appear at the top of the LCD display and the message NORMALIZATION DONE will be displayed momentarily in the center of the screen.
  • Page 106 MS2711B. If the MS2711B is equipped with the Preamplifier option (Option 8) and the preamplifier is ON, the RF power in should be less than or equal to –50 dBm.
  • Page 107 When the key is pressed, a Recall Trace selection box appears on the display. Select setup location 0 to recall the factory preset state. Step 2. Connect the RF Out port of the MS2711B to the input of the DUT using a test port extension cable.
  • Page 108 Chapter 7 Tracking Generator If the MS2711B is not equipped with the Preamplifier option, or the Preamplifier is OFF, the RF power in plus the attenuation, should be less than or equal to –30 dBm. For example, for an input power of +10 dBm: +10 – 40 dB atten = –30 dBm.
  • Page 109 Set the resolution bandwidth to 1 MHz, and the video bandwidth to 300 kHz. Step 8. Connect the RF Out port of the MS2711B to the RF In port of the MS2711B, using the two cables and the adapter.
  • Page 110 Step 8. Normalize the test setup to remove the effects of the components, if necessary (see page 7-3). Step 9. Connect the RF Out port of the MS2711B to Antenna 1, and connect the RF In port of the MS2711B to Antenna 2. The resulting sweep is the isolation across the specified frequency range.
  • Page 111 Chapter 7 Tracking Generator Figure 7-4 shows an isolation of –23 dBm at 830 MHz and an isolation of –26 dBm at 890 MHz. Figure 7-4. Initial Antenna Isolation Change the angle of the panel antenna by adjusting the mounting position. Adjust both an- tennas for maximum isolation (more negative means better isolation).

  • Page 112: Chapter 8 - Software Tools

    Software Tools Introduction This chapter provides a description of the Anritsu Software Tools program. Software Tools is a Windows 95/98/NT4/2000/ME/XP program for transferring measured traces, along with markers and limit lines, to the PC display. The program help function provides on screen instructions on display modification, trace overlay, uploading and downloading traces, and multiple plot printing.

  • Page 113: Installation

    Installation To install the Software Tools program: Step 1. Insert the Anritsu Software Tools disk in the CDROM drive. Step 2. From the Windows Start menu, select Run . Step 3. Type: X:\Setup.exe where X is the drive letter of your CDROM drive.

  • Page 114: Using Software Tools

    Interface Cable Installation Communication between the instrument and the PC is accomplished over a null modem se- rial cable provided with the instrument (Anritsu part number 800-441, and optional USB to serial adaptor, part number 551-1691, if required). Step 1. Install the null modem serial interface cable to the Serial Interface connector on the test connector panel.

  • Page 115: Plot Capture To The Pc

    Chapter 8 Software Tools Plot Capture to the PC To open the plot capture menus, select the capture icon on the button bar, or select the Capture drop down menu from the menu bar. Select Capture to Screen to download traces to the PC. Select a folder, or individual traces within a folder, to be downloaded to the PC.
  • Page 116 NOTE: While all possible selections are displayed, some of these selections ap- ply only to specific models of Anritsu hand held instruments. Trace Overlay or Plot Overlay Trace Overlay is activated by the Mouse Function icon. Single-click on the Mouse Function icon to toggle.
  • Page 117 Chapter 8 Software Tools Saving Traces Once the plots are captured to the PC they can be saved as individual files or as a block of files to a database. Saving a Plot as a Windows Metafile or to a Spreadsheet Plots can be saved as a Windows metafile (.wmf), a SMST .dat file, a text file (.txt) or .mdb database.
  • Page 118 Entering Antenna Factors in Software Tools NOTE: Antenna Factors are available only on Anritsu Hand Held Spectrum An- alyzers. The Antenna Factor (AF) is a fundamental parameter of an antenna used in field measure- ments.
  • Page 119 Chapter 8 Software Tools It also can be shown that in a 50 ohm system: = 9 73 Where G = the gain of the receiving antenna in dB l = wave length in meters Antennas used for radiated emissions testing are individually calibrated (the antenna factors can be measured directly) at all appropriate distances.
  • Page 120 Chapter 8 Software Tools Uploading Antenna Factors All 10 available antennas are transferred to the instrument at the same time. To modify only a single antenna in the instrument, first download the current antennas (see below) then modify the appropriate antenna, then re-upload the antennas to the instrument. To upload antenna information from Software Tools to the CUSTOM list in the HHSA: Step 1.

  • Page 121: Index

    Index accessories ....1-3 Error Messages ... . . 2-27 Adjacent Channel Power ..5-9 ESD .
  • Page 122 Symbols ....2-26 Occupied Bandwidth ... 5-1 Optional Accessories ... 1-3 Tracking Generator .

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