Anritsu MS8911A Maintenance Manual
Anritsu MS8911A Maintenance Manual

Anritsu MS8911A Maintenance Manual

Isdbt field tester
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Summary of Contents for Anritsu MS8911A

  • Page 1 T h e t e s t & me a s u r e me n t e q u i p me n t y o u n e e d a t t h e p r i c e y o u w a n t . A l l t e s t I n s t r u me n t s , I n c .
  • Page 2 Model MS8911A ISDBT Field Tester MAINTENANCE MANUAL 490 JARVIS DRIVE P/N: 10580-00132 MORGAN HILL, CA 95037-2809 REVISION: A PRINTED: NOVEMBER 2005 COPYRIGHT 2005 ANRITSU CO...
  • Page 4: Table Of Contents

    16. ANRITSU Customer Service Centers ........
  • Page 6: Introduction

    Introduction This manual provides maintenance instructions for the ISDBT Field Tester Model MS8911A. It describes the product and provides performance verification procedures, parts replacement procedures, and a replaceable parts list. Description The MS8911A is a synthesizer-based handheld spectrum analyzer and ISDBT Field Tester.
  • Page 7: Recommended Test Equipment

    Frequency Range: 800 to 2400 MHz Anritsu part number 1091-307 Nominal Coupling Factor: 30 dB Isolator Frequency Range: 800 to 1000 MHz Anritsu part number 1000-51 or Alcatel Isolation: 30 dB Model 9C34-41 High Power Load DC to 18 GHz, 10W...
  • Page 8: Performance Verification

    BNC male to BNC male coaxial cable Procedure: Connect the 10 MHz reference source to the Anritsu MG3692A Synthesized Signal Source and to the ISDBT Field Tester. Connect the output of the source to the RF Input of the ISDBT Field Tester.
  • Page 9: Spectrum Analyzer Internal Reference Frequency Adjustment

    Use this procedure to adjust the frequency if the unit fails the Spectrum Analyzer Frequency Accuracy verification test on page 3. Equipment Required: • Anritsu MG3692A Synthesized Signal Source with options 2A, 3, 4, 15A and 22 or equivalent • 10 MHz Reference Standard •...
  • Page 10 Field Tester Service Mode (Figure 1). Figure 1. MS8911A ISDBT Field Tester Service Key Sequence 18. Press the Service Menu soft key, then the APP Service soft key. 19. Press the Calibration soft key, then the 10 MHz TXCO soft key.
  • Page 11: Spectrum Analyzer Ssb Phase Noise Verification

    This test can be used to verify the single side band phase noise of the ISDBT Field Tester. Equipment Required: • Anritsu MG3692A Synthesized Signal Source with options 2A, 3, 4, 15A and 22 or equivalent • Anritsu ISDBT Field Tester External Power Supply (part number 40-168) •...
  • Page 12: Spectrum Analyzer Spurious Response (Second Harmonic Distortion)

    The following test can be used to verify the input related spurious response of the ISDBT Field Tester. Equipment Required: • Anritsu MG3692A Synthesized Signal Source with options 2A, 3, 4, 15A and 22 or equivalent • Anritsu ISDBT Field Tester External Power Supply (part number 40-168) •...
  • Page 13: Spectrum Analyzer Residual Spurious Response

    Procedure: Connect the 50 Ohm termination to the ISDBT Field Tester RF Input. Connect the external power supply (Anritsu part number 40-168) to the ISDBT Field Tester. Press the On/Off key to turn on the ISDBT Field Tester. Press the Shift key, the Preset (1) key, and then the Preset soft key to reset the instrument to the default start- ing conditions.
  • Page 14 Procedure: Connect the 50 Ohm termination to the ISDBT Field Tester RF Input. Connect the external power supply (Anritsu part number 40-168) to the ISDBT Field Tester. Press the On/Off key to turn on the ISDBT Field Tester. Press the Shift key, the Preset (1) key, and then the Preset soft key to reset the instrument to the default start- ing conditions.
  • Page 15: Spectrum Analyzer Displayed Average Noise Level (Danl)

    Procedure: Connect the 50 Ohm termination to the ISDBT Field Tester RF Input. Connect the external power supply (Anritsu part number 40-168) to the ISDBT Field Tester. Press the On/Off key to turn on the ISDBT Field Tester. Press the Shift key, the Preset (1) key, and then the Preset soft key to reset the instrument to the default start- ing conditions.
  • Page 16: Input Related Spurious (Irs) Signals

    Connect the 10 MHz reference source to the Anritsu MG3692A Synthesized Signal Source. Connect the output of the Anritsu MG3692A Synthesized Signal Source to the ISDBT Field Tester RF In. Set the MG3692A output to 1674 MHz, with an RF output level of –30 dBm.
  • Page 17 64. Record the Marker 1 amplitude reading in the test records on page 44, Amplitude Reading at 2145 MHz. 65. Calculate the input related spurious level and verify that it is –60 dBm: (Input Related Spurious = Marker 1 reading – amplitude reading for 2145 MHz). ISDBT Field Tester MS8911A MM...
  • Page 18: Spectrum Analyzer Resolution Bandwidth Accuracy

    Connect the 10 MHz reference source to the Anritsu MG3692A Synthesized Signal Source. Connect the output of the Anritsu MG3692A Synthesized Signal Source to the ISDBT Field Tester RF Input. Connect the external power supply (Anritsu part number 40-168) to the ISDBT Field Tester.
  • Page 19: Spectrum Analyzer Measurement Accuracy

    Level Accuracy vs. Input Power Level Test Spectrum Analyzer Level Accuracy Across Frequency Equipment Required: • Anritsu MG3692A Synthesized Signal Source with options 2A, 3, 4, 15A and 22 or equivalent • Anritsu ML2438A Dual Channel Power Meter or equivalent •...
  • Page 20 NOTE: To maintain test setup integrity, do not disconnect sensor B, the power splitter or the fixed attenuator. Measuring the Unit for Frequency Level Accuracy: Remove sensor A, install the 34NN50A adapter to the end of the Attenuator, and connect to the MS8911A as shown in Figure 3.
  • Page 21 NOTE: Change the reference level to –20 dBm and the input level to 0 dB. Level Accuracy vs. Input Power Level Test Equipment Required: • Anritsu MG3692A Synthesized Signal Source with options 2A, 3, 4, 15A and 22 or equivalent • Anritsu ML2438A Dual Channel Power Meter or equivalent •...
  • Page 22 Set the MG3692A output to 50 MHz CW. Connect the external power supply (Anritsu part number 40-168) to the ISDBT Field Tester. On the ISDBT Field Tester, press the Shift key, the Preset (1) key, and then the Preset soft key to reset the instrument to the default starting conditions.
  • Page 23: Level Accuracy Verification

    Level Accuracy Verification The tests in this section verify the level accuracy of the MS8911A in ISDB-T mode. Equipment Required: • Anritsu MG8940A ISDB-T Signal Generator • Mini-Circuits TIA-1000-4 RF Power Amplifier • Anritsu MN63A Programmable Attenuator • Weinschel Model 1870A Power Splitter, or equivalent •...
  • Page 24 Press the On/Off key to turn on the MS8911A and wait until the measurement display appeared then press the Shift key then press the Mode (9) key to activate the mode selection menu. Use up and down arrow keys and highlight ISDB-T Signal Analyzer and press the Enter key.
  • Page 25: Noise Floor

    62 (767.14285714 MHz) on page 48 for the off/on conditions. Noise Floor The test in this section can be used to verify the noise floor of MS8911A in ISDB-T mode. This test is performed using the RMS detection mode. Equipment Required: •...
  • Page 26: Modulation Analysis Frequency Accuracy

    Connect the external power supply (Anritsu part number 40-168) to the MS8911A. Press the On/Off key to turn on the MS8911A and wait until the measurement display appeared then press the Shift key then press the Mode (9) key to activate the mode selection menu.
  • Page 27: Frequency Lock Range

    Analysis Mode and verify that it is within ±0.3 Hz. 25. Repeat Steps 13 to 24 for Channel 38 and Channel 62. Frequency Lock Range The test in this section can be used to verify the frequency lock range of the MS8911A in ISDB-T Modulation Analysis mode. Equipment Required: •...
  • Page 28: Db Compression Level

    Connect the external power supply (Anritsu part number 40-168) to the MS8911A. Press the On/Off key to turn on the MS8911A and wait until the measurement display appears then press the Shift key then press the Mode (9) key to activate the mode selection menu.
  • Page 29: Phase Noise (2Nd Step)

    26. Repeat Steps 12 to 25 for Channel 38 and 62. 27. On MS8911A press the Frequency/Level soft key, then press Pre Amp soft key to turn Pre Amp on. 28. Press the Reference Level soft key, enter –50 then press the Enter key.
  • Page 30: Battery Information

    Use only Anritsu approved battery packs. • Recharge the battery only in the ISDBT Field Tester or in an Anritsu approved charger. • When the ISDBT Field Tester or the charger is not in use, disconnect it from the power source.
  • Page 31: Battery Pack Removal And Replacement

    Place a finger in the battery access door notch and push the door down towards the bottom of the instrument, as illustrated in Figure 7. Figure 7. Battery Access Door Notch Remove the battery access door, as illustrated in Figure 8. Figure 8. Removing the Battery Access Door ISDBT Field Tester MS8911A MM...
  • Page 32 Replacement is the opposite of removal. Note the orientation of the battery contacts, and be sure to insert the new battery with the contacts facing the bottom of the unit, as illustrated in Figure 10. Figure 10. Battery Contacts ISDBT Field Tester MS8911A MM...
  • Page 33: Opening The Isdbt Field Tester Case

    Figure 12. Front Panel Assembly Removal and Cable Connections Carefully disconnect the External Reference In cable from the main PCB assembly connection marked EXT REF. Carefully disconnect the External Trigger In cable from the main PCB connection marked J3007. ISDBT Field Tester MS8911A MM...
  • Page 34 NOTE: Proper routing of the cables is important for instrument performance. Note the cable routing as illustrated in the drawing below. 12. Reverse the above steps to reassemble the case (Figure 13). Figure 13. Cable Routing Diagram ISDBT Field Tester MS8911A MM...
  • Page 35: Real Time Clock (Rtc) Battery Removal And Replacement

    Figure 14. RTC Lithium Battery on the Main PCB Remove the battery. Place the new battery into the holder with the positive side facing up. Apply RTV to the battery and the holder to secure the battery. ISDBT Field Tester MS8911A MM...
  • Page 36: Main Pcb Assembly Replacement

    Replacement is the reverse of removal. Take care to insure that the connector on the Main PCB aligns with the connector on the Keypad PCB coming through the front panel. ISDBT Field Tester MS8911A MM...
  • Page 37: Spectrum Analyzer Module Assembly Replacement

    NOTE: There is an RF gasket material between the two halves of the case, and in the connector panel grooves. Take care not to remove or damage this material when removing or replacing the Spectrum Analyzer Module and connector panel assembly. ISDBT Field Tester MS8911A MM...
  • Page 38: Lcd Assembly Replacement

    Reverse the above steps to install the replacement LCD. NOTE: Pay attention to the routing of the LCD Backlight Cable. The cable must be positioned so as not to be pinched when the assembly is reattached to the front panel. ISDBT Field Tester MS8911A MM...
  • Page 39: Lcd Backlight Pcb Removal And Replacement

    Reverse the above steps to install the replacement LCD backlight PCB. NOTE: Pay attention to the routing of the LCD Backlight Cable. The cable must be positioned so as not to be pinched when the assembly is reattached to the front panel. ISDBT Field Tester MS8911A MM...
  • Page 40: Keypad Membrane And Pcb Replacement

    NOTE: The speaker is held in place by four locating pins on the inside of the keypad bezel. When the keypad bezel is removed, the speaker is held only by the fragile connecting wires. Use care not to damage the speaker wires when removing or replacing the keypad membrane or PCB. ISDBT Field Tester MS8911A MM...
  • Page 41 • Verify that all locking tabs are fully seated into the main body of the case when reinstalling the bezel. ISDBT Field Tester MS8911A MM...
  • Page 42: Function Key Membrane And Switchpad Replacement

    Reverse the above steps to install the replacement switchpad or membrane. NOTE: Carefully close the locking tab on connector J2 to secure the flexible switchpad connection. The tab should “snap” into position when fully closed. ISDBT Field Tester MS8911A MM...
  • Page 43: Accessories And Replaceable Parts List

    When ordering the Main/SPA PCB Assembly the options that are to be installed on the board must be defined. The options of the ISDBT Field Tester are listed on a tag at the top of the MS8911A. ISDBT Field Tester MS8911A MM...
  • Page 44 Keypad Bezel, Numeric, Plastic Case 61378-1 Function Key Bezel, Plastic Case 61360-1 Encoder Knob, Plastic Case 61368 LCD Protective Cover 61381 Fan Bracket ND64383 Fan Assembly 800-473 Battery Cable, Connector 64136 ID Label, Model MS8911A ISDBT Field Tester MS8911A MM...
  • Page 45: Anritsu Customer Service Centers

    FAX: 046-225-8379 Telephone: 015-82-433200 FAX: 015-82-731303 CHINA ANRITSU ELECTRONICS (SHANGHAI) CO. LTD. 2F, Rm B, 52 Section Factory Building No. 516 Fu Te Rd (N) Shanghai 200131 P.R. China Telephone:21-5868-0226, 5868-0227, 5868- 0228 FAX: 21-5868-0588 ISDBT Field Tester MS8911A MM...
  • Page 46: Appendix 1 Test Records

    We recommend 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 provides a detailed history of the instrument’s performance. ISDBT Field Tester MS8911A MM...
  • Page 47 –100 dBc/Hz 100 kHz ____________ dBc/Hz –100 dBc/Hz Spectrum Analyzer Spurious Response (Second Harmonic Distortion) Frequency Measured Values Converted Value Specification 50.1 MHz _______________ ______________ dBc –45 dBc 100.2 MHz _______________ ______________ dBc –45 dBc ISDBT Field Tester MS8911A MM...
  • Page 48 _______________ dBm <100 dBm 3.0 GHz 4.0 GHz _______________ dBm <100 dBm 4.0 GHz 5.0 GHz _______________ dBm <100 dBm 5.0 GHz 6.0 GHz _______________ dBm <100 dBm 6.0 GHz 7.1 GHz _______________ dBm <100 dBm ISDBT Field Tester MS8911A MM...
  • Page 49 100 Hz 150 Hz Auto 90 Hz _______________ Hz 110 Hz 30 Hz 50 Hz 3 Hz 27 Hz _______________ Hz 33 Hz 10 Hz 30 Hz 3 Hz 9 Hz _______________ Hz 11 Hz ISDBT Field Tester MS8911A MM...
  • Page 50 –10 dBm _______________ dBm –14 dBm _______________ dBm –20 dBm _______________ dBm –24 dBm _______________ dBm –30 dBm _______________ dBm –34 dBm _______________ dBm –40 dBm _______________ dBm –44 dBm _______________ dBm –50 dBm _______________ dBm ISDBT Field Tester MS8911A MM...
  • Page 51 _______________ dBm _______________ dB ±2.0 dB –75 dBm –50 dBm _______________ dBm _______________ dB ±2.0 dB –80 dBm –50 dBm _______________ dBm _______________ dB ±2.0 dB –85 dBm –50 dBm _______________ dBm _______________ dB ±2.0 dB ISDBT Field Tester MS8911A MM...
  • Page 52 _______________ dBm _______________ dB ±2.0 dB –75 dBm –50 dBm _______________ dBm _______________ dB ±2.0 dB –80 dBm –50 dBm _______________ dBm _______________ dB ±2.0 dB –85 dBm –50 dBm _______________ dBm _______________ dB ±2.0 dB ISDBT Field Tester MS8911A MM...
  • Page 53 (dBm) (dBm) 473.14285714 –25 _____________ dBm –50 _____________ dBm ≤ ≤ –70 –94 623.14285714 –25 _____________ dBm –50 _____________ dBm ≤ ≤ –70 –94 767.14285714 –25 _____________ dBm ≤ –50 _____________ dBm ≤ –70 –94 ISDBT Field Tester MS8911A MM...
  • Page 54 <1 _________ _________ <1 _________ _________ ∆ ∆ ∆ <1 –1 –25 _________ _________ <1 _________ _________ <1 _________ _________ ∆ ∆ ∆ <1 –25 _________ _________ <1 _________ _________ <1 _________ _________ ∆ ∆ ∆ <1 ISDBT Field Tester MS8911A MM...
  • Page 55 (dBc/Hz) (dBc/Hz) 473.14285714 ≤ ___________ ≤ ___________ ± ___________ –103 –105 19 Hz 623.14285714 ≤ ___________ ≤ ___________ ± ___________ –103 –105 19 Hz 767.14285714 ___________ ___________ ___________ ≤ ≤ ± –103 –105 19 Hz ISDBT Field Tester MS8911A MM...

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