1 Performance Tests - Verifying Specifications24 Keysight 53147A/148A/149A Assembly Level Service GuideRun Self Test1 Disconnect all signal cables from the input and Reference 10MHz connectors.2 Press and release the Shift key, and then press and release the Menu (Reset/Local) key.3 Press the up- and/or down-arrow key(s) as many times as necessary untilDO SELF TEST is displayed.4 Press and release the Enter key.5 If no errors are detected, SELF TEST OK is briefly displayed when the self testis completed. If any error messages are displayed, refer to the troubleshootingsection in Chapter 2, “Service”.6 Mark Pass or Fail in the “Performance Test Record” on page 51, “Test 3”.External Timebase TestThis test verifies the instrument’s 10 MHz external timebase specification byverifying that setting REF OSC to EXT allows the instrument to be synchronized toan external reference signal.Equipment RequiredKeysight 3325A/B Synthesizer (2)Keysight 10100C 50Ω Feedthrough TerminatorKeysight 10503 Series Coaxial Cables (BNC m to m) (2)NOTE This test is appropriate for the Keysight 53147A, 53148A, and 53149A.NOTE – To ensure that the test results are valid, the instrument and the testequipment should be powered on for at least 30 minutes prior to beginningthe tests. This allows the internal temperatures of the equipment to stabilize.– These tests are appropriate for the Keysight 53147A, 53148A, and 53149A.
