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Anritsu VNA Master MS2026B Maintenance Manual
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Anritsu VNA Master MS2026B Maintenance Manual

Anritsu VNA Master MS2026B Maintenance Manual

Vector network analyzer
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Maintenance Manual
VNA Master
MS2026B and MS2028B
Vector Network Analyzers
MS2026B Vector Network Analyzer 5 kHz to 6 GHz, N Connectors
MS2028B Vector Network Analyzer 5 kHz to 20 GHz, N or K Connectors
Anritsu Company
Part Number: 10580-00222
490 Jarvis Drive
Revision: A
Morgan Hill, CA 95037-2809
Published: February 2010
USA
Copyright 2009-2010 Anritsu Company
www.valuetronics.com

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Summary of Contents for Anritsu VNA Master MS2026B

  • Page 1 MS2026B Vector Network Analyzer 5 kHz to 6 GHz, N Connectors MS2028B Vector Network Analyzer 5 kHz to 20 GHz, N or K Connectors Anritsu Company Part Number: 10580-00222 490 Jarvis Drive Revision: A Morgan Hill, CA 95037-2809 Published: February 2010 Copyright 2009-2010 Anritsu Company www.valuetronics.com...
  • Page 2 www.valuetronics.com...

  • Page 3: Disclaimer Of Warranty

    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 www.valuetronics.com...

  • Page 5: Notes On Export Management

    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 6 European Parliament and Council Directive 2002/96/EC Chinese RoHS Compliance Statement www.valuetronics.com...

  • Page 7: Safety Symbols

    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: For Safety

    For Safety Warning Always refer to the operation manual when working near locations at which the alert mark, shown on the left, is attached. If the operation, etc., is performed without heeding the advice in the operation manual, there is a risk of personal injury.

  • Page 9: Table Of Contents

    Table of Contents Chapter 1 — General Information Introduction ..............1-1 Description .
  • Page 10 Internal Anatomy of the VNA Master MS2026B ........
  • Page 11 Table of Contents (Continued) 4-18 Replace LCD Backlight Inverter PCB Assembly – 3-61362 ......4-38 Part Numbers .
  • Page 12 Table of Contents (Continued) MS2026B VNA Master Test Record ..........A-2 Instrument Information.
  • Page 13 Figure 4-4. VNA Master MS2026B Major Assemblies – Viewed from Top Connector Strip..4-7 Figure 4-5. VNA Master MS2026B Major Assemblies – Viewed from Bottom ....4-8 Figure 4-6.
  • Page 14 List of Figures and Tables (Continued) Table A-4. Spectrum Analyzer (SA) - Frequency Accuracy ....... . A-4 Table A-5.

  • Page 15: Chapter 1 - General Information

    Cat 5 Ethernet Crossover Cable • 2000-1520-R 2GB USB Memory Drive Related Documents Other documents are available for the MS2026B and MS2028B at the Anritsu web site at www.anritsu.com • VNA Master MS2026B and MS2028B User Guide – PN 10580-00220 •...

  • Page 16: Recommended Test Equipment

    Verify that the test equipment is operating properly before it is used. Table 1-1. Recommended Test Equipment Recommended Equipment Critical Specification Manufacturer/Model Frequency: 2 - 3 GHz Anritsu Model MF2412B Frequency Counter Frequency: 10 MHz Symmetricom Model Frequency Reference RubiSource T&M Frequency: DC to 18 GHz Anritsu Model OSLN50...

  • Page 17: Recommended Tools And Supplies

    • 5.5 mm Angled-Head Open End Wrench • 5/16” (~8 mm) Open End Wrench, 2 each recommended – For SMA Connectors • 5/16” and 8 in-lbs Open End Torque Wrench, Anritsu Model 01-201– For Option 11 • 7/16” (~12 mm) Nut Driver – For Rotary Encoder •...
  • Page 18 General Information • Room Temperature Vulcanizing (RTV) Silicon Sealant – For Keypad Flex PCB Replacement • Anritsu Part Number – 3-783-1102 • Approved cleaning supplies – For LCD Display, Clear Plastic LCD Protector, and instrument Case PN: 10580-00222 Rev. A MS2026B/MS2028B VNA MM www.valuetronics.com...

  • Page 19: Replaceable Parts And Assemblies

    General Information 1-7 Replaceable Parts and Assemblies Replaceable Parts and Assemblies To ensure that the correct options are provided on the replacement assembly when ordering either a VNA Module Assembly or Main PCB Assembly, all installed instrument options must be declared on the order. The installed options are listed on a label on the top of the MS202XB and can also be viewed in the System/Status display.
  • Page 20 1-7 Replaceable Parts and Assemblies General Information Table 1-2. Replaceable Parts and Assemblies (2 of 2) Part Number Description Main Keypad PCB 65027-3 – For either MS2026B or MS2028B instruments – Section 4-19 “Replace Main Keypad Components – 3-61362, 65027-3” on page 4-38 Soft Key Keypad Membrane 3-61361 –...

  • Page 21: Chapter 2 - Performance Verification

    VNA is not required for this test. Equipment Required • Frequency Counter, Anritsu Model MF2412B • RF Coaxial Cable, Anritsu Model 3670K50-2 or 3670NN50-2 • Adapter, Anritsu Model 33KK50B or 34NFK50 Procedure 1. Press the On/Off key to turn on the VNA Master.

  • Page 22: Transmission Dynamic Range

    • Calibration Tee, N female, Anritsu Model OSLNF50 • RF Coaxial Cable, Anritsu Model 3670NN50-2 • Calibration Tee, K male, Anritsu Model OSLK50 (for units with Option 11) • Calibration Tee, K female, Anritsu Model OSLKF50 (for units with Option 11) •...
  • Page 23 Performance Verification 2-3 Transmission Dynamic Range 14. Press the Start Cal soft key and connect the appropriate standard of the calibration tees to Port 1 and the open end of the RF cable (extended Port 2) as instructed at each Calibration step such as “Open Port 1”, “Short Port 1”, “Short Port 2”, and so on.
  • Page 24 2-3 Transmission Dynamic Range Performance Verification 19. Press the Measure soft key and then the S-Parameter soft key. Select S12. 20. Verify that the noise floor is below –80 dB. 21. Press the Freq/Time/Dist soft key and then press the Start Freq soft key. 22.

  • Page 25: S-Parameter Measurements Verification

    • N Connector Verification Kit, Anritsu Model SC7858 • 3/4” and 12 in-lb. Open End Torque Wrench, Anritsu 01-200 • Calibration Tee, K male, Anritsu Model OSLK50 (for units with Option 11) • Calibration Tee, K female, Anritsu Model OSLKF50 (for units with Option 11) •...

  • Page 26: Procedure

    2-4 S-Parameter Measurements Verification Performance Verification • Clean and check the pin depth and condition of all adapters, test port cables, calibration components, and impedance transfer standards. • Pre-shape the test cable so as to minimize its movement during calibration and measurement activities. Procedure 1.

  • Page 27: Power Monitor (Option 5) Verification

    If the Power Monitor (Option 5) is installed in the VNA Master, the following test can be used to verify the accuracy of the power measurements. Equipment Required • Anritsu MG3691B Synthesized Signal Source with options 2A and 4 (or 5) • Power Meter, Anritsu Model ML2437A • Power Sensor, Anritsu Model MA2442D •...
  • Page 28 3. Anritsu RF Detector, PN 560-7N50B 4. Power Splitter, Aeroflex/Weinschel Model 1870A 5. Cable 6. Anritsu Adapter, PN 34RKNF50 7. Anritsu MS3691B Synthesized Signal Source with Options A2 and 4 (or 5) 8. Anritsu Power Sensor, PN MA2442D 9. Cable 10. Anritsu ML2437A Power Meter Figure 2-2.
  • Page 29 Performance Verification 2-5 Power Monitor (Option 5) Verification 9. Repeat Step #7 and Step #8 for the other power level settings shown in Table 2-2 below. Table 2-2. Power Monitor Verification Specifications Power Level (dB) Specification (dB) –40 –21 –4 ±...

  • Page 30: Bias Tee (Option 10) Operational Check

    • VNA Master External Power Supply, Anritsu Part Number 40-168-R Procedure 1. Connect the external power supply (Anritsu part number 40-168-R) to the VNA Master. Note: The VNA Master must be powered by the external power supply for this test.

  • Page 31: Fault Test

    Performance Verification 2-6 Bias Tee (Option 10) Operational Check 22. Repeat Step #15 through Step #17. Table 2-3. Bias Tee Verification Voltage Setting (V) 12.0 18.0 32.0 Expected Voltage (V) 10-12 15.7-17.7 28.5-30.9 Expected Current (mA) 85-145 142-202 361-411 Fault Test 23.

  • Page 32: Gps (Option 31) Operational Check

    GPS (Option 31) Operational Check The following test is used to verify the operation of the GPS option. Ensure that the Anritsu GPS Antenna is in a direct line-of-sight relationship to the GPS satellites or Note the Antenna is placed outside without any obstructions.

  • Page 33: Chapter 3 - Battery Information And Replacement

    806-141 Automotive 12 Volt DC Adapter Battery Information The following general information relates to the care and handling of the VNA Master MS202XB Anritsu 633-44 Rechargeable Lithium-Ion Battery. Approved Batteries Only • Always use the battery for its intended purpose only.

  • Page 34: Analyzer Not In Use

    3-3 Battery Information Battery Information and Replacement Analyzer Not In Use • When the VNA Master or the charger is not in use, disconnect it from the power source. • If left unused, a fully charged battery will discharge itself over time. •...

  • Page 35: 3-4 Battery Pack Removal And Replacement

    Battery Information and Replacement 3-4 Battery Pack Removal and Replacement 3-4 Battery Pack Removal and Replacement This section provides instructions for the removal and replacing the VNA Master battery pack. Many of the procedures in this section are generic, and apply to many similar instruments. Photos Note and illustrations used are representative and may show instruments other than the MS202XB VNA Master.
  • Page 36 3-4 Battery Pack Removal and Replacement Battery Information and Replacement 2. Place a finger in the battery access door notch and push the door down towards the bottom of the instrument, as shown in Figure 3-2, “Battery Access Door Notch”. Battery Door Notch...
  • Page 37 Battery Information and Replacement 3-4 Battery Pack Removal and Replacement 4. With the Battery Access Door completely removed, grasp the battery lanyard and pull the battery straight out of the unit, as illustrated in Figure 3-4, “Removing the Battery”. Remove Battery Figure 3-4.
  • Page 38 3-4 Battery Pack Removal and Replacement Battery Information and Replacement Figure 3-5. MS202XB Case, Battery Door, and Battery PN: 10580-00222 Rev. A MS2026B/MS2028B VNA MM www.valuetronics.com...
  • Page 39 Battery Information and Replacement 3-4 Battery Pack Removal and Replacement 5. 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 shown in Figure 3-6, “Orientation of Battery Contacts”...
  • Page 40 3-4 Battery Pack Removal and Replacement Battery Information and Replacement PN: 10580-00222 Rev. A MS2026B/MS2028B VNA MM www.valuetronics.com...

  • Page 41: Chapter 4 - Assembly Removal And Replacement

    Chapter 4 — Assembly Removal and Replacement Introduction This chapter describes the removal and replacement procedures for the various assemblies. Electrostatic Discharge Prevention All electronic devices, components, and instruments can be damaged by electrostatic discharge. It is important to take preventative measures to protect the instrument and its internal subassemblies from electrostatic discharge.
  • Page 42 4-4 Replaceable Parts, Assemblies, and Accessories Assembly Removal and Replacement Table 4-1. Replaceable Parts and Assemblies (2 of 3) Part Number Description Power Monitor PCB Assembly, Option 5 – For MS2026B instruments equipped with Option 5 Power Monitor ND67197 – For MS2028B instruments equipped with Option 5 Power Monitor –...
  • Page 43 Assembly Removal and Replacement 4-4 Replaceable Parts, Assemblies, and Accessories Table 4-1. Replaceable Parts and Assemblies (3 of 3) Part Number Description AC to DC Power Adapter 40-168-R – For either MS2026B or MS2028B instruments – No disassembly required Soft Carrying Case 65729 –...

  • Page 44: Front Panel Components For Vna Master Ms202Xb

    4-5 Front Panel Components for VNA Master MS202XB Assembly Removal and Replacement Front Panel Components for VNA Master MS202XB The figure below shows the major front panel components including the bezels, keypad membranes, PCBs, and other inner case components. 1. Main Keypad Switch Bezel 2.

  • Page 45: Main Keypad Bezel For Vna Master Ms202Xb

    Assembly Removal and Replacement 4-6 Main Keypad Bezel for VNA Master MS202XB Main Keypad Bezel for VNA Master MS202XB The figure below shows the Main Keypad Bezel, the location of its locking tabs, and its relationship to the Main Keypad Membrane. 1.

  • Page 46: Softkey Keypad Bezel For Vna Master Ms202Xb

    4-7 Softkey Keypad Bezel for VNA Master MS202XB Assembly Removal and Replacement Softkey Keypad Bezel for VNA Master MS202XB The figure below shows the Softkey Keypad Bezel, the location of its locking tabs, and its orientation to the case. 1. Softkey Keypad Bezel Front View 2.

  • Page 47: Internal Anatomy Of The Vna Master Ms2026B

    9. Rotary Knob and Rotary Encoder (mounted on Case Front) 10. Main Keypad (mounted on Case Front) 11. Soft Key Keypad (mounted on Case Front) 12. Case Front Figure 4-4. VNA Master MS2026B Major Assemblies – Viewed from Top Connector Strip MS2026B/MS2028B VNA MM PN: 10580-00222 Rev. A www.valuetronics.com...

  • Page 48: Ms2026B View From Bottom

    10. Main Keypad (mounted on Case Front) 11. Soft Key Keypad (mounted on Case Front) 12. Case Front 13. Battery 14. Battery Door Figure 4-5. VNA Master MS2026B Major Assemblies – Viewed from Bottom PN: 10580-00222 Rev. A MS2026B/MS2028B VNA MM www.valuetronics.com...

  • Page 49: Internal Anatomy Of The Vna Master Ms2028B

    Assembly Removal and Replacement 4-9 Internal Anatomy of the VNA Master MS2028B Internal Anatomy of the VNA Master MS2028B MS2028B View from Top Connector Strip 1. Case Back and Mounting Screws 2. VNA Module Assembly with N (f) Connectors and Mounting Screws 3.

  • Page 50: Ms2028B View From Bottom

    4-9 Internal Anatomy of the VNA Master MS2028B Assembly Removal and Replacement MS2028B View from Bottom 1. Case Back and Mounting Screws 2. VNA Module Assembly with N (f) or K (f) Connectors 3. Power Monitor Option 5 PCB Assembly (behind connector strip) 4.

  • Page 51: 4-10 Disassembly Sequence Overview

    Assembly Removal and Replacement 4-10 Disassembly Sequence Overview 4-10 Disassembly Sequence Overview The following steps reduces the VNA Master MS202XB to its replaceable component parts: 1. Remove the Battery Door and the Battery. 2. Remove the Handle Hand Strap. 3. Remove the Rotary Encoder Knob. 4.

  • Page 52: Open The Instrument Case

    4-11 Open the Instrument Case Assembly Removal and Replacement 4-11 Open the Instrument Case This procedure provides instructions for opening the VNA Master case. With the case opened, the internal assemblies can be removed and replaced, as detailed in the following sections. Opening the instrument case provides access for the following replacement assemblies: •...
  • Page 53 Assembly Removal and Replacement 4-11 Open the Instrument Case 3. Use a Phillips screwdriver to remove the four (4) Pan Head Phillips Head screws securing the two Case halves together. 1. Remove Battery Cover and Battery 2. Orient case with top Connector Panel as shown 3.
  • Page 54 4-11 Open the Instrument Case Assembly Removal and Replacement • Section 4-15 – Replace Rotary Encoder – 3-410-101 on page 4-27 • Section 4-16 – Remove Main PCB Assembly on page 4-30 • Section 4-17 – Replace Main PCB Assembly – ND69864, ND69865 on page 4-34 •...

  • Page 55: 4-12 Replace Power Monitor Pcb Assembly Option 5 - Nd67197

    Assembly Removal and Replacement 4-12 Replace Power Monitor PCB Assembly Option 5 – ND67197 4-12 Replace Power Monitor PCB Assembly Option 5 – ND67197 This procedure provides instructions for replacing the Power Monitor PCB Assembly Option 5 and its related Detector connector.
  • Page 56 4-12 Replace Power Monitor PCB Assembly Option 5 – ND67197 Assembly Removal and Replacement 5. Holding the Connector Flex PCB Cable away from the Power Monitor PCB, gently lever up the PCB out of its header socket. Check Header Pins 6.

  • Page 57: 4-13 Replace Vna Module Assembly - Nd69866 Nd69867 Nd70363

    Assembly Removal and Replacement 4-13 Replace VNA Module Assembly – ND69866 ND69867 ND70363 4-13 Replace VNA Module Assembly – ND69866 ND69867 ND70363 This replacement procedure provides instructions for replacing the VNA Modules for all variants of the MS202XB VNAs. In general, the VNA Module is removed as a complete unit and then exchanged for a replacement part.
  • Page 58 4-13 Replace VNA Module Assembly – ND69866 ND69867 ND70363 Assembly Removal and Replacement 5. Using the Tool T1451 socket, remove the BNC Connector Dress Nut from the Ext Trig Input connector. Pull the Ext Trig Input connector from the Connector Face Plate and position so it is out of the way. •...
  • Page 59 Assembly Removal and Replacement 4-13 Replace VNA Module Assembly – ND69866 ND69867 ND70363 Identify VNA Module PCB Assembly Mounting Screws 6. Using the figure below, identify the locations of the eight (8) Phillips-head mounting screws holding the VNA Assembly PCB in place. 1.
  • Page 60 4-13 Replace VNA Module Assembly – ND69866 ND69867 ND70363 Assembly Removal and Replacement Remove the VNA Module PCB Assembly 7. Using a Phillips head screwdriver, remove the eight (8) screws holding the VNA Module PCB in place. 8. With the Connector Face Plate facing away from you, start lifting up from the right edge of the VNA Module which disconnects the connector between the VNA Module and the underlying Main PCB Assembly.
  • Page 61 Assembly Removal and Replacement 4-13 Replace VNA Module Assembly – ND69866 ND69867 ND70363 10. The figure photograph below shows the “folded” VNA Module Assembly PCB to the left of the next to Case Front with the Main PCB Assemble still in place. Note that both units are still connected with RF coaxial cables.
  • Page 62 4-13 Replace VNA Module Assembly – ND69866 ND69867 ND70363 Assembly Removal and Replacement 11. On the Main PCB Assembly, remove the cable from the J2200 100 MHz MCX connector. This cable stays with the VNA Module connected to the Ext Ref In connector. 12.
  • Page 63 Assembly Removal and Replacement 4-13 Replace VNA Module Assembly – ND69866 ND69867 ND70363 e. Be careful to not offset the header pins by one row. f. Make sure the pins are loosely but correctly positioned before proceeding. g. When perfectly aligned, press on either side of the header strip to mate the two connectors. h.

  • Page 64: 4-14 Replace Gps Receiver Module Option 31 - Nd70320

    4-14 Replace GPS Receiver Module Option 31 – ND70320 Assembly Removal and Replacement 4-14 Replace GPS Receiver Module Option 31 – ND70320 This replacement procedure provides instructions for replacing the GPS Receiver Module mounted on the Main PCB Assembly for all variants of the MS202XB VNAs. The basic procedure is to open the case, remove the VNA Module, and then service the GPS Module.
  • Page 65 Assembly Removal and Replacement 4-14 Replace GPS Receiver Module Option 31 – ND70320 6. Using a Phillips head screwdriver, remove the eight (8) screws holding the VNA Module PCB in place. Partially Remove the VNA Module PCB Assembly 7. With the Connector Face Plate facing away from you, start lifting up from the right edge of the VNA Module which disconnects the connector between the VNA Module and the underlying Main PCB Assembly.
  • Page 66 4-14 Replace GPS Receiver Module Option 31 – ND70320 Assembly Removal and Replacement 22. Once the connectors and the standoffs are correctly aligned, press the VNA Module connector into the mating connector on the Main PCB. 23. Make sure the Connector Face Plate is correctly positioned in its mounting grove. 24.

  • Page 67: Replace Rotary Encoder - 3-410-101

    5. Cut the cable tie that holds the Ext Trig Input and Ext Ref Input coaxial cable to the RF Out hardline. 6. Using the Anritsu Tool T1451, the castellated socket, remove the BNC Connector Dress Nut from the Ext Trig Input connector.
  • Page 68 4-15 Replace Rotary Encoder – 3-410-101 Assembly Removal and Replacement 8. With the Connector Face Plate facing away from you, start lifting up from the right edge of the VNA Module which disconnects the connector between the VNA Module and the underlying Main PCB Assembly.
  • Page 69 Assembly Removal and Replacement 4-15 Replace Rotary Encoder – 3-410-101 20. Once the connectors and the standoffs are correctly aligned, press the VNA Module connector into the mating connector on the Main PCB. 21. Make sure the Connector Face Plate is correctly positioned in its mounting grove. 22.

  • Page 70: 4-16 Remove Main Pcb Assembly

    4-16 Remove Main PCB Assembly Assembly Removal and Replacement 4-16 Remove Main PCB Assembly This procedure covers removing the Main PCB Assembly from the MS2026B and MS2028B instruments by removing the Power Monitor PCB Assembly (if installed), the VNA Module PCB Assembly, the GPS Receiver Module (if installed), and finally the Main PCB Assembly.
  • Page 71 Assembly Removal and Replacement 4-16 Remove Main PCB Assembly 7. Using a small flat blade screwdriver, carefully pry the six (6) Soft Key Keypad Bezel locking tabs free of the main body of the case. • The flat blade width must be less than 3.5 mm (0.13”) wide and as thin as possible. If available, recommended is a screwdriver made of fiberglass or other material that will not scratch the bezel.
  • Page 72 4-16 Remove Main PCB Assembly Assembly Removal and Replacement • As each locking tab releases, the bezel comes up a bit. The Speaker sits on top of the Main Keypad PCB and is held in place by four locating pins on the inside of the Main Keypad Bezel around the speaker opening.
  • Page 73 Assembly Removal and Replacement 4-16 Remove Main PCB Assembly Remove GPS Receiver Module PCB Option 31 Step 22. If it is installed, 21. If the GPS Receiver Module PCB Option 31 is not installed, skip ahead to perform the substeps immediately below: a.

  • Page 74: 4-17 Replace Main Pcb Assembly - Nd69864, Nd69865

    4-17 Replace Main PCB Assembly – ND69864, ND69865 Assembly Removal and Replacement 4-17 Replace Main PCB Assembly – ND69864, ND69865 This procedure assumes that the Main PCB Assembly has been removed from the instrument as described above in Section 4-16 – Remove Main PCB Assembly on page 4-30 and that the Main PCB Assembly is to be replaced.
  • Page 75 Assembly Removal and Replacement 4-17 Replace Main PCB Assembly – ND69864, ND69865 • The cable is permanently attached to the LCD Panel 1. LCD Backlight Cable, permanently attached to LCD Assembly. 2. J4005 connector on Power Inverter. Disconnect cable here going to Main PCB Assembly. 3.
  • Page 76 4-17 Replace Main PCB Assembly – ND69864, ND69865 Assembly Removal and Replacement 7. Undo the four (4) Phillips head screws holding the LCD Display in place and set the LCD aside. 1. LCD Backlight Cable, permanently attached to LCD. Connects to Backlight Power Inverter Assembly. 2.
  • Page 77 Assembly Removal and Replacement 4-17 Replace Main PCB Assembly – ND69864, ND69865 13. The Main PCB Assembly is now ready to reassemble in the Case Front Assembly. Continue with the reassembly process in Section 4-21 – Install Main PCB and Reassemble Instrument on page 4-41 below.

  • Page 78: Replace Lcd Backlight Inverter Pcb Assembly - 3-61362

    4-18 Replace LCD Backlight Inverter PCB Assembly – 3-61362 Assembly Removal and Replacement 4-18 Replace LCD Backlight Inverter PCB Assembly – 3-61362 This procedure assumes that the Main PCB Assembly has been removed from the instrument as described above and that the LCD Backlight Power Inverter PCB Assembly must be replaced. The replacement procedure is the same for MS2026B and MS2028B instruments.

  • Page 79: Replace Lcd Display Pcb Assembly - 3-15-118

    Assembly Removal and Replacement 4-19 Replace LCD Display PCB Assembly – 3-15-118 4-19 Replace LCD Display PCB Assembly – 3-15-118 This procedure assumes that the Main PCB Assembly has been removed from the instrument as described above and that the LCD Display must be replaced. The replacement procedure is the same for MS2026B and MS2028B instruments.

  • Page 80: Replace Clear Plastic Lcd Protector - 3-61368

    4-20 Replace Clear Plastic LCD Protector – 3-61368 Assembly Removal and Replacement 4-20 Replace Clear Plastic LCD Protector – 3-61368 This procedure assumes that the Main PCB Assembly has been removed from the instrument as described above and that the Clear Plastic LCD Protector must be replaced. The replacement procedure is the same for MS2026B and MS2028B instruments.

  • Page 81: 4-21 Install Main Pcb And Reassemble Instrument

    Assembly Removal and Replacement 4-21 Install Main PCB and Reassemble Instrument 4-21 Install Main PCB and Reassemble Instrument This procedure assumes that the required assemblies have been replaced and installed on the Main PCB Assembly. Procedure Install the Main PCB Components 1.
  • Page 82 4-21 Install Main PCB and Reassemble Instrument Assembly Removal and Replacement • J2200 100 MHz In – Cable connected to the Ext Ref In BNC connector on the VNA Module. • J2201 26 MHz Out – Cable connected to the bottom RF shield on the VNA Module. •...
  • Page 83 Assembly Removal and Replacement 4-21 Install Main PCB and Reassemble Instrument Install GPS Antenna Connector Step 14. Otherwise, perform the 13. If the GPS Receiver Module Option 31 is not installed, skip ahead to substeps immediately below: a. Route the GPS Antenna cable from the Main PCB so that it is located between the Face Plate and the VNA Module and routed into its notch b.
  • Page 84 4-21 Install Main PCB and Reassemble Instrument Assembly Removal and Replacement Install Battery and Battery Door 24. Fit the Reinstall the Battery. 25. Reinstall the Battery Door. 4-44 PN: 10580-00222 Rev. A MS2026B/MS2028B VNA MM www.valuetronics.com...

  • Page 85: Replace Main Keypad Components - 3-61362, 65027-3

    Assembly Removal and Replacement 4-22 Replace Main Keypad Components – 3-61362, 65027-3 4-22 Replace Main Keypad Components – 3-61362, 65027-3 This procedure provides instructions for removing and replacing the Main Keypad Membrane and/or the underlying Main Keypad PCB. All keypad parts can be replaced without opening the MS202XB case. Part Numbers •...
  • Page 86 4-22 Replace Main Keypad Components – 3-61362, 65027-3 Assembly Removal and Replacement 5. Using a small flat blade screwdriver and a piece of rubber as scratch protection, carefully pry the eight (8) Main Keypad Bezel locking tabs free of the main body of the case. The following tips help with the removal process: •...
  • Page 87 Vulcanizing silicon sealant to hold the door shut. Allow ample time for the sealant to set. • Anritsu Part Number: 3-783-1102 ñ RTV Silicon Sealant 24. Either replace or reinstall the Main Keypad Membrane by following Step #11 to Step #14 above.

  • Page 88: Replace Soft Key Keypad Membrane - 3-61361

    4-23 Replace Soft Key Keypad Membrane – 3-61361 Assembly Removal and Replacement 4-23 Replace Soft Key Keypad Membrane – 3-61361 This procedure provides instructions for removing and replacing the Soft Key Keypad Membrane. All keypad parts can be replaced without opening the MS202XB case. If the both the membrane and the underlying Soft Key Keypad Flex PCB must be replaced, the Main Keypad Bezel must also be removed using the procedure in the next section below: •...
  • Page 89 Assembly Removal and Replacement 4-23 Replace Soft Key Keypad Membrane – 3-61361 4. Using a small flat blade screwdriver and a small piece of rubber or similar material, carefully pry the six (6) Soft Key Keypad Bezel locking tabs free from the case. The following tips help with the removal process: •...

  • Page 90: Replace Soft Key Keypad Components - 3-61361, 61333-3

    4-24 Replace Soft Key Keypad Components – 3-61361, 61333-3 Assembly Removal and Replacement 4-24 Replace Soft Key Keypad Components – 3-61361, 61333-3 This procedure provides instructions for removing and replacing both the Soft Key Keypad Membrane and the underlying Soft Key Keypad Flex PCB and assumes that the Main Keypad PCB will not be replaced. All keypad parts can be replaced without opening the MS202XB case.
  • Page 91 Assembly Removal and Replacement 4-24 Replace Soft Key Keypad Components – 3-61361, 61333-3 Remove Main Keypad Bezel 5. The Main Keypad Bezel and Membrane must be removed to access the connector on the Main Keypad PCB. • The Main Keypad PCB does not need to be removed to service the Soft Key Keypad assembly. 6.
  • Page 92 4-24 Replace Soft Key Keypad Components – 3-61361, 61333-3 Assembly Removal and Replacement 10. Hold the edge of the Speaker with one hand and remove the Membrane from one side and then remove the Membrane from the other side, exposing the Main Keypad PCB. Remove Soft Key Keypad Bezel Exercise extreme caution working around the LCD Display.
  • Page 93 Assembly Removal and Replacement 4-24 Replace Soft Key Keypad Components – 3-61361, 61333-3 15. The Soft Key Keypad Flex PCB is connected to the Main Keypad PCB by a ZIF (Zero Insertion Force) “Flip Lock” SMF connector on the Main Keypad PCB. 16.

  • Page 94: Replace Hand Strap Handle - 3-61470

    2. Using the flat blade screwdriver, remove the two M3 Slotted Screws holding the two Plastic Ring Holders to the case. 3. Orient the strap so that the word “Anritsu” reads correctly. 4. Capture one Handle End Ring with the Ring Holder and screw into place.

  • Page 95: Replace Rotary Knob - 3-61360-2

    Assembly Removal and Replacement 4-26 Replace Rotary Knob – 3-61360-2 4-26 Replace Rotary Knob – 3-61360-2 This procedure covers removing and replacing the Rotary Knob. The case does not need to be opened for this procedure. Note that this part does not include the Rotary Encoder. To replace the Rotary Encoder, see: •...
  • Page 96 4-26 Replace Rotary Knob – 3-61360-2 Assembly Removal and Replacement 4-56 PN: 10580-00222 Rev. A MS2026B/MS2028B VNA MM www.valuetronics.com...

  • Page 97: Chapter 5 - Troubleshooting

    Unit Cannot Boot Up Unit cannot boot-up, no activity occurs when the On/Off key is pressed: 1. Battery may have been fully discharged. Use an external charger (Anritsu PN 2000-1374) to charge a completely discharged battery. 2. Battery may be the wrong type. Use only Anritsu approved battery packs. Some non-approved battery packs will fit into the MS202XB but they are electrically incompatible and will not charge correctly.

  • Page 98: Operating Problems

    5-3 Operating Problems Troubleshooting Operating Problems IF Out of Range Message 1. VNA Module may have damaged. Replace VNA Module. Lock Error Message 1. VNA Module may have damaged. Replace VNA Module. 2. Main PCB may have failed. Replace Main PCB Assembly. Option 5, Power Monitor Problems 1.

  • Page 99: Appendix A - Test Records

    Appendix A — Test Records Introduction This appendix provides test records that can be used to record the performance of the MS2026B and MS2028B VNA Masters. Make a copy of the following Test Record pages and document the measured values each time performance verification is performed.

  • Page 100: Ms2026B Vna Master Test Record

    A-2 MS2026B VNA Master Test Record Test Records MS2026B VNA Master Test Record Instrument Information Serial Number: Firmware Revision: Operator: Options: Date: VNA Frequency Accuracy Table A-1. Spectrum Analyzer (SA) - Frequency Accuracy VNA Output Frequency Specification Frequency Counter Reading 2.6 GHz ±3.9 kHz S-Parameter Measurements Verification...

  • Page 101: Power Measurement (For Instruments With Option 5 Power Monitor

    Test Records A-2 MS2026B VNA Master Test Record Power Measurement (For instruments with Option 5 Power Monitor) Table A-3. Power Measurement for Instruments with Power Monitor Option 5 Power Level @ 1 GHz Specification Measured Value +13 dBm ± 1 dB 0 dBm ±...

  • Page 102: Ms2028B Vna Master Test Record

    A-3 MS2028B VNA Master Test Record Test Records MS2028B VNA Master Test Record Instrument Information Serial Number: Firmware Revision: Operator: Options: Date: VNA Frequency Accuracy Table A-4. Spectrum Analyzer (SA) - Frequency Accuracy VNA Output Frequency Specification Frequency Counter Reading 2.6 GHz ±3.9 kHz S-Parameter Measurements Verification...

  • Page 103: Power Measurement - Instruments With Option 5 Power Monitor

    Test Records A-3 MS2028B VNA Master Test Record Power Measurement - Instruments with Option 5 Power Monitor Table A-6. Power Measurements for Instruments with Power Monitor Option 5 Power Level @ 1 GHz Specification Measured Value +13 dBm ±1 dB 0 dBm ±1 dB –7 dBm...
  • Page 104 A-3 MS2028B VNA Master Test Record Test Records PN: 10580-00222 Rev. A MS2026B/MS2028B VNA MM www.valuetronics.com...

  • Page 105: Appendix B - Test Fixture Schematics

    Introduction The following schematics are provided for those wishing to build their own test fixtures for the Option 10 verification test. The part numbers referenced in the schematics are Anritsu part numbers. T2904 Test Fixture Schematic Figure B-1. T2904 Test Fixture Schematic MS2026B/MS2028B VNA MM PN: 10580-00222 Rev.

  • Page 106: T3377 Test Fixture Schematic

    B-3 T3377 Test Fixture Schematic Test Fixture Schematics T3377 Test Fixture Schematic Figure B-2. T3377 Test Fixture Schematic PN: 10580-00222 Rev. A MS2026B/MS2028B VNA MM www.valuetronics.com...

  • Page 107: T3536 Test Fixture Schematic

    Test Fixture Schematics B-4 T3536 Test Fixture Schematic T3536 Test Fixture Schematic Figure B-3. T3536 Test Fixture Schematic MS2026B/MS2028B VNA MM PN: 10580-00222 Rev. A www.valuetronics.com...
  • Page 108 B-4 T3536 Test Fixture Schematic Test Fixture Schematics PN: 10580-00222 Rev. A MS2026B/MS2028B VNA MM www.valuetronics.com...
  • Page 109 Adapter (for Option 5 ..... . 1-3 SC7859 Verification Kit ....1-2 Anritsu PN T1451 Castellated Socket Tool ... .1-3 01-200 3/4"...
  • Page 110 D to R K (f) Test Port Connectors ....1-2 Differential S-Parameters ....1-2 Disassembly Sequence Overview .
  • Page 111 S to W RF Detector (for Option 5) ....1-2 Tests Rotary Encoder ......1-6 Bias Tee (Option 10) Operational Check .
  • Page 112 Index-4 PN: 10580-00222 Rev. A MS2026B/MS2028B VNA MM www.valuetronics.com...
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  • Page 116 Anritsu Company 490 Jarvis Drive Anritsu prints on recycled paper with vegetable soybean oil ink. Morgan Hill, CA 95037-2809 www.valuetronics.com http://www.anritsu.com...

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