Anritsu MS2711B Maintenance Manual
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Anritsu MS2711B Maintenance Manual

Anritsu MS2711B Maintenance Manual

Site master spectrum analyzer
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Maintenance Manual
Site Master Spectrum Analyzer
MS2711B
Handheld Spectrum Analyzer for Measuring, Monitoring, and
Analyzing Signal Environments
Anritsu Company
P/N: 10580-00072
490 Jarvis Drive
Revision: C
Morgan Hill, CA 95037-2809
Printed: June 2009
USA
Copyright 2009 Anritsu Company

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  • Page 1 Maintenance Manual Site Master Spectrum Analyzer MS2711B Handheld Spectrum Analyzer for Measuring, Monitoring, and Analyzing Signal Environments Anritsu Company P/N: 10580-00072 490 Jarvis Drive Revision: C Morgan Hill, CA 95037-2809 Printed: June 2009 Copyright 2009 Anritsu Company...
  • Page 2 Anritsu is not liable for consequential damages. LIMITATION OF WARRANTY The foregoing warranty does not apply to Anritsu connectors that have failed due to normal wear. Also, the warranty does not apply to defects resulting from improper or inadequate maintenance by the Buyer, unauthorized modification or misuse, or operation outside of the environmental specifications of the product.
  • Page 4 This product and its manuals may require an Export License or approval by the government of the product country of origin for re-export from your country. Before you export this product or any of its manuals, please contact Anritsu Company to confirm whether or not these items are export-controlled.
  • Page 7 Some or all of the following five symbols may or may not be used on all Anritsu equipment. In addition, there may be other labels attached to products that are not shown in the diagrams in this manual.
  • Page 8 Avoid touching the test port center conductors unless you are properly grounded and have eliminated the possibility of static discharge. Repair of damage that is found to be caused by electrostatic discharge is not covered under warranty. Safety-2 10580-00072 C MS2711B Maintenance...

  • Page 9: Table Of Contents

    Procedure: ............. 2-14 MS2711B Maintenance...
  • Page 10 Tracking Generator Harmonics and Spurious Test ....... . . A-5 Contents-2 10580-00072 C MS2711B Maintenance...

  • Page 11: Chapter 1-General Information

    Identification Number All Anritsu instruments are assigned a six-digit serial number, such as “101001”. This number appears on a decal affixed to the back panel of the instrument. Please use this identification number during any correspondence with Anritsu Service Centers about this instrument.

  • Page 12: Replaceable Parts

    Replaceable Parts General Information Replaceable Parts Replaceable parts for the Model MS2711B Spectrum Analyzer are listed below. Table 1-1. Replaceable Parts List Part Number Description Accessories User Guide, MS2711B Spectrum Analyzer 10580-00074 Programming Manual, MS2711B Spectrum Analyzer (available on disk only)
  • Page 13 Foam, LCD Corners 48241 Foam, LCD Window 48278 Foam, LCD Backing 46659 Foam, Keypad Backing 46661 Foam, Battery Door 48246 Foam, Battery Compartment 48271 Cable Clamp 720-19 Spring, Battery Compartment 790-515 ID Label, Model MS2711B 55212 MS2711B Maintenance 10580-00072 C...
  • Page 14 Replaceable Parts General Information 10580-00072 C MS2711B Maintenance...

  • Page 15: Chapter 2-Performance Verification

    Chapter 2 — Performance Verification Performance Verification Procedures The following procedures can be used to verify the performance of the MS2711B Spectrum Analyzer having firmware version 2.09 or later. Frequency Accuracy The following test can be used to verify the CW frequency accuracy of the Spectrum Analyzer.

  • Page 16: Phase Noise Verification

    Performance Verification Phase Noise Verification Equipment Required: • Anritsu MG3692A Synthesized Signal Source with Option 2A, Option 4, and Option 15A, or equivalent • Anritsu 34RSN50 50 ohm adapter or equivalent • Anritsu 15NNF50-1.5C RF Coaxial Cable or equivalent Procedure: 1.
  • Page 17 25. Press the SINGLE/CONT (+/–) key to read and record five values, then calculate the average of the five recorded values. Subtract 40 dB from the average value and verify that the result is ≤ –75 dBc/Hz. (For example: –35 dBc measured –40 dB = –75 dBc/Hz) MS2711B Maintenance 10580-00072 C...

  • Page 18: Second Harmonic Distortion Test

    3. Connect the external power supply (Anritsu part number 40-115) to the Site Master. 4. On the MS2711B, press and hold the ESCAPE/CLEAR key, then press the ON/OFF key to turn on the Spectrum Analyzer. (This sets the instrument to the factory preset state.) 5.
  • Page 19 24. Convert this measured value to dBc using the following formula: Input Related Spurious Response (dBc) = [Second Harmonic Level @ 80 MHz] + 30 dBm = ___ dBc Specifications for this measurement are –45 dBc with –30 dBm into the first mixer. MS2711B Maintenance 10580-00072 C...

  • Page 20: Residual Spurious Response Test

    The following test can be used to verify the residual spurious response of the Spectrum Analyzer. Equipment Required: Anritsu 28N50-2 or SM/PL 50 ohm Termination or equivalent Procedure: 1. Connect the 50 ohm termination to the Spectrum Analyzer RF Input.
  • Page 21 36. Press the MARKER (8) key and then the M1 soft key. 37. Press the ON/OFF soft key and then the MARKER TO PEAK soft key. 38. Record the M1 amplitude reading and verify that it is ≤ –90 dBm. MS2711B Maintenance 10580-00072 C...

  • Page 22: Level Accuracy Test

    Figure 2-1. Measurement Accuracy Setup 3. Connect the external power supply (Anritsu part number 40-115) to the Spectrum Analyzer. 4. On the Spectrum Analyzer, press and hold the ESCAPE/CLEAR key, then press the ON/OFF key to turn on the Spectrum Analyzer. (This sets the instrument to the factory preset state.)
  • Page 23 15. Enter 50 and press the MHz soft key to set the center frequency to 50 MHz. 16. On the Anritsu ML2430A-Series Power Meter, press the Sensor key and then the CalFactor soft key. Press the FREQ soft key and enter 50 MHz for the Input Signal Frequency. This sets the power meter to the proper power sensor cal factor.

  • Page 24: Dynamic Range Test

    This test can be used to verify the dynamic range of the Spectrum Analyzer. Equipment required: • Two Anritsu MG3692A Synthesized Signal Sources with Option 2A, Option 4, and Option 15A, or equivalent • Anritsu N241A50 Power Splitter or equivalent •...

  • Page 25: Power Monitor (Option 5) Verification

    2. Connect the MA2418A Reference Source to the input of the 560-7N50B RF detector. 3. Connect the RF Detector output to the RF Detector input of the MS2711B Spectrum Analyzer. 4. Connect the DC power supply to the appropriate line voltage in order to supply power to the MA2418A Reference Source.

  • Page 26: Preamplifier (Option 8) Verification

    Before continuing, allow a 30-minute warm up for the internal circuitry to stabilize. 3. On the MS2711B, press the AMPLITUDE key and the REF LEVEL soft key. 4. Enter –75 and press the ENTER key to set the Reference Level to –75 dBm.
  • Page 27 35. Wait until a full sweep is complete. 36. Press the MARKER (8) key and then press the M1 soft key. 37. Press the MARKER TO PEAK soft key. Record the M1 amplitude reading and verify whether it is ≤ –115 dBm. MS2711B Maintenance 10580-00072 C 2-13...

  • Page 28: 2-10 Level Accuracy Test

    This test verifies the level accuracy of the spectrum analyzer with the Preamplifier turned on. Equipment Required: • Anritsu MG3692A Synthesized Signal Source, with Option 2A, Option 4, and Option 15A • Anritsu ML2430A-Series Power Meter or equivalent • Anritsu MA2442A High Accuracy Power Sensor or equivalent •...
  • Page 29 13. Calculate the output power level that is required at the power splitter end that is connected to the power sensor in order to provide the desired power level at the MS2711B RF Input. Record the calculated value Table A-2, “Attenuator Characterization” on page A-3 Appendix A “Test...
  • Page 30 30. On the MS2711B, press the MARKER (8) key, then the M1 soft key. 31. Press the MARKER TO PEAK soft key to position the marker at the center of the response for the test frequency.

  • Page 31: Tracking Generator (Option 20) Verification

    • Anritsu MA2442A High Accuracy Power Sensor Procedure: 1. Connect the external power supply (Anritsu part number 40-115) to the MS2711B. 2. On the Spectrum Analyzer, press and hold the ESCAPE/CLEAR key, then press the ON/OFF key to turn on the Spectrum Analyzer. (This sets the instrument to the factory preset state.
  • Page 32 30. On the power meter, verify that the reading is ± 1.5 dB maximum from the set power level, and record the reading in Table A-4. 31. Repeat Step through Step for frequencies of 100 MHz, 500 MHz, 1000 MHz, 1500 MHz, 2060 MHz, 2061 MHz, 2500 MHz and 3000 MHz. 2-18 10580-00072 C MS2711B Maintenance...

  • Page 33: Equipment Required

    14. Press the CENTER soft key. 15. Enter 750 and press the MHz soft key to set the tracking generator frequency to 750 MHz. 16. Connect an RF cable between the RF Out connector of the MS2711B and the RF Input connector of the MS2665C.
  • Page 34 ≤ –20 dBc, and record the reading in Table A-5. 26. On the MS2711B, press the CENTER soft key. Enter 790 and press the MHz soft key to set the tracking generator frequency to 790 MHz. 27. On the MS2665C, press the AMPLITUDE key.

  • Page 35: Equipment Required

    10. Press the CENTER soft key. 11. Enter 2 and press the GHz soft key to set the tracking generator frequency to 2 GHz. 12. Connect an RF cable between the RF Out connector of the MS2711B and the RF Input connector of the MS2665C.
  • Page 36 26. Verify that the calculated difference is 5 MHz ±400 kHz. 27. On the MS2711B, press the TG OFFSET soft key. 28. Enter –5 and press the ENTER key to set the offset frequency to –5 MHz below the selected center frequency.
  • Page 37 Performance Verification Tracking Generator (Option 20) Verification MS2711B Maintenance 10580-00072 C 2-23...
  • Page 38 Tracking Generator (Option 20) Verification Performance Verification 2-24 10580-00072 C MS2711B Maintenance...

  • Page 39: Chapter 3-Removal And Replacement

    An Electrostatic Discharge (ESD) safe work area and proper ESD handling procedures (that conform to ANSI/ESD S20.20-1999 or ANSI/ESD S20.20-2007) are mandatory to avoid ESD damage when handling subassemblies or components found in the MS2711B. Additional information pertaining to Caution ESD can be found at the ESD Association Web site: http://www.esda.org/s2020.html...

  • Page 40: Additional Precautions

    • Do not handle static sensitive components in areas where the floor or work surface covering is capable of generating a static charge. • Keep work areas clean and free of any objects capable of holding or storing a static charge. 10580-00072 C MS2711B Maintenance...

  • Page 41: Battery Pack Removal And Replacement

    Procedures in this manual may apply to many similar instruments. Photos and illustrations used are Note representative and may show instruments other than the MS2711B Spectrum Analyzer. 1. With the Spectrum Analyzer standing upright on a stable surface, locate the battery access door (Figure 3-4).
  • Page 42 The following information relates to the care and handling of the instrument battery, and NiMH batteries in general. • The Nickel Metal Hydride (NiMH) battery that is supplied with the MS2711B is shipped in a discharged state. Before using the MS2711B Spectrum Analyzer, the internal battery must first be charged for three hours, either in the instrument or in the optional battery charger (Anritsu part number: 2000-1029).

  • Page 43: Battery Testing Procedure

    6. When the instrument display fades and the instrument switches itself off, make note of the test stop time. and Step 6) should be ≥ 2.5 hours. If the total test time is < 2.5 hours, then 7. The total test time (Step replace the battery. MS2711B Maintenance 10580-00072 C...

  • Page 44: Front Panel Assembly Removal And Replacement

    6. Carefully disconnect the keypad interface cable from J1 on the main PCB. 7. Carefully disconnect the speaker cable from J23 on the main PCB. 8. Carefully disconnect the LCD display backlight cable from J15 on the main PCB. 10580-00072 C MS2711B Maintenance...
  • Page 45 The corner bumpers mount only one way. That is, the raised area inside one end of the bumper Note 3-10) is made to conform to the contour of only the front cover. (Figure Figure 3-10. Corner Bumper Detail MS2711B Maintenance 10580-00072 C...

  • Page 46: Lcd Assembly Replacement

    5. Remove the front panel backing plate, carefully feeding the LCD cable through the access hole in order to avoid damage to the cable or its connector. 6. Remove the rubber cushion pad from the LCD assembly and remove the assembly. 7. Reverse the above steps to install the replacement assembly. 10580-00072 C MS2711B Maintenance...

  • Page 47: Key Pad Pcb Replacement

    6. Remove the rubber cushion pad from the key pad PCB and remove the PCB. Figure 3-12. Front Panel Keypad PCB Location 7. Reverse the above steps to install the replacement assembly. Take care to position the speaker and speaker cable properly. MS2711B Maintenance 10580-00072 C...

  • Page 48: Key Pad Membrane Replacement

    3. Remove the keypad membrane by gently pulling the membrane up and out of the holes in the front panel. Figure 3-13. Front Panel Keypad Membrane 4. Reverse the above steps to install the replacement membrane. 3-10 10580-00072 C MS2711B Maintenance...

  • Page 49: Pcb Assembly Replacement

    This procedure provides instructions for replacing the PCB assembly with the connector panel attached. For an MS2711B with no options, or for an MS2711B with only Option 20, the PCB assembly consists of two PCBs (Control and Spectrum Analyzer). For an MS2711B with Option 5 or Option 8 installed, the assembly consists of three PCBs (Control, Spectrum Analyzer, and Preamplifier or Power Monitor).
  • Page 50 The PCB connector panel fits into grooves in the two halves of the Spectrum Analyzer case. Note Make sure that the panel is correctly aligned with the grooves before reassembling the two halves together. 3-12 10580-00072 C MS2711B Maintenance...

  • Page 51: Appendix A-Test Records

    Appendix A Test Records This appendix provides test records that can be used to record the performance of the MS2711B Maintenance. Anritsu Company recommends that you make a copy of the following test record pages and document the measurements each time a Performance Verification is performed. Continuing to document this process each time it is performed will provide a detailed history of the instrument performance.

  • Page 52: Preamplifier (Option 8) Level Accuracy Test Settings

    Serial Number: ________________ Options: ___________________________________________________ Preamplifier (Option 8) Level Accuracy Test Settings Table A-1. Preamplifier Level Accuracy Test Settings Freq (MHz) Output Power at Source Output Power at Attenuator Attenuator Insertion Loss 1000 1500 2000 2500 2950 10580-00072 C MS2711B Maintenance...

  • Page 53: Preamplifier (Option 8) Level Accuracy Test Characterization

    –60 –50 –55 –60 1000 –50 –55 –60 1500 –50 –55 –60 2000 –50 –55 –60 2500 –50 –55 –60 2950 –50 –55 –60 a.Required Power meter Level = Desired Test level + Attenuator Insertion Loss MS2711B Maintenance 10580-00072 C...

  • Page 54: Preamplifier (Option 8) Level Accuracy Test Results

    –50 1000 –50 –40 –55 –45 –60 –50 1500 –50 –40 –55 –45 –60 –50 2000 –50 –40 –55 –45 –60 –50 2500 –50 –40 –55 –45 –60 –50 2950 –50 –40 –55 –45 –60 –50 10580-00072 C MS2711B Maintenance...

  • Page 55: Tracking Generator Option Level Accuracy

    ±4.0 dB Tracking Generator Harmonics and Spurious Test Table A-5. Tracking Generator Harmonics and Spur Fundamental Freq. (MHz) Spec. 1600 1680 1760 1840 1920 2000 Harmonics Level ≤ –20 dBc Other Spurious Level ≤ –20 dBc MS2711B Maintenance 10580-00072 C...
  • Page 56 Tracking Generator Harmonics and Spurious Test Test Records 10580-00072 C MS2711B Maintenance...
  • Page 58 Anritsu Company 490 Jarvis Drive Printed on Recycled Paper with Vegetable Soybean Oil Ink Morgan Hill, CA 95037-2809 http://www.anritsu.com/...

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