This page contains links to information for performing preventative maintenance on the E7495A/B Base Station Test Sets. The information found on this page should help you to keep your Test Set in top condition so it is available when needed. This is the best way to prevent unplanned downtime and extend the instruments life.

Regularly scheduled preventative maintenance that includes cleaning, adjusting, and verification will help you to:

  • Assure that your instrument is available when you need it
  • Maintain optimum instrument performance
  • Insure that your instrument has the latest functionality updates and enhancements
  • Avoid expensive unplanned downtime and repairs
  • Extend the useful life of your instrument

Periodic Adjustments

  • Time Base Adjustment

The E7495A and E7495B products have a Time Base Adjustment procedure located in the Adjustment section of the Service Screen which can be accessed by pressing the following Softkeys: [System, Service, Adjustments, Time Base Adjustment]. This procedure uses the Internal GPS module locked to GPS time, as the reference source to adjust the E7495A/B internal TCXO. After starting the test from the Adjustment screen, follow the instructions on the display to perform this adjustment. Further information can be found on the E7495A/B onboard help file or in the E7495A/B Measurement Guide. Keysight E7495A/B Base Station Test Set Measurement Guide

Product Operation/Verification

The E7495A/B provides several Operation/Verification Tests you can perform to test the basic system functionality. These include both On-Board and Manual Operation/Verification Tests.

On-Board Operation/Verification Tests

The Display and Keyboard Verification Tests are located in the Verification section of the Service Screen which can be accessed by pressing the following Softkeys: [System, Service, Verification].

Information on running the On-Board Operation/Verification Tests can be found on the E7495A/B onboard help file or in the Basic System Functions section of the E7495A/B Measurement Guide. Keysight E7495A/B Base Station Test Set Measurement Guide

  • Display test
  • Keyboard test

E1 & T1 Operation/Verification Tests each contain 3 operational test to verify the modules functionality. This includes a check of the modules RAM, ROM, and a Loop Back test to verify the transmitting and receiving hardware. These test are located in the TEST section of the E1 and T1 measurement screen and can be accessed by pressing the following Softkeys: [Mode, Backhaul, T1 Analyzer, (or E1 Analyzer), Tests, Verification].

  • T1 Verification Tests (Option 700)
  • E1 Verification Tests (Option 710)

Manual Operation/Verification Test

  • RF Verification Tests
  • CW Source Verification Tests (Option 500)
  • Complex Modulation Verification Tests (Option 510)
  • Power Meter Verification Tests (Option 600)
  • Battery Management Verification Tests

The manual Operation/Verification procedures allow you to check out the functionality of the major sections of hardware that do not have automated on-board verification tests. Information on running the Manual Operation/Verification Tests can be found in the E7495A/B Manual Operation/Verification guide. E7495A/B Manual Verification Procedures

Mechanical Inspection/Cleaning

The following links provide information on Inspecting and Cleaning the E7495A/B Test Set.

Product/Measurement Optimization

The following documents provide information on how to optimize the E7495A/B for measurement accuracy and battery runtime.

Firmware/Software Updates

By downloading and installing the latest versions of Firmware and Software from our website you will be assured that your E7495A/B has the latest functionality updates and enhancements.

Safety

The following documents are useful reference guides when operating or when working on test equipment.

  • Understanding Grounding Issues(effects on measurements and personal safety)
  • Avoiding Instrument ESD and EOS Damage
  • Preventing Damage from RF Overpower Conditions

The maximum power for the RF In port and the RF Out/SWR port of the Test Set is +20 dBm (100mW). When directly coupled to a base station, the test set can be damaged by excessive power applied to any of these ports. To prevent damage in most situations when you directly couple the test set to the base station, use the high power attenuator between the Test Set and the Base Station. Information on preventing overpower conditions can be found in the E7495A/B Measurement Guide. Keysight E7495A/B Base Station Test Set Measurement Guide

  • Safety and Regulatory Information

Detailed safety information for the E7495A/B can be found in the Safety and Regulatory Information and Specifications section of the E7495A/B Measurement Guide. Keysight E7495A/B Base Station Test Set Measurement Guide

Repair and Calibration services

Getting your equipment repaired and calibrated by Keysight is the best way to ensure that it maintains its high level of measurement integrity throughout its lifetime. Repair and Calibration Services

Infoline provides free online instrument support services 24 hours a day so that you can check warranty status, find services prices, log service requests, check status of calibration & repair work, view calibration certificates, and more. Advanced secure features require a free, one-time registration. Infoline Services for Instrument Support

More Preventative Maintenance Tips

Refer to the following document for more tips on how to prevent damage to your instrument: Tips for Preventing Spectrum Analyzer Damage