26 Impedance Analyzer
1 Troubleshooting
Troubleshooting Using Diagnostic Test
The Keysight E4991B has diagnostic test function to diagnose the
analog measurement section and internal dc power supply
voltages. The diagnostic tests make it possible to isolate a faulty
board assembly. The following paragraphs describe the procedure
to perform the diagnostic tests.
Diagnostic Test
To execute the diagnostic test
To isolate faulty board assembly modules, execute the diagnostic
test in accordance with the following procedure.
Step 1. Press key.
Step 2. Click Service Menu > Test Menu > Diagnostic Test.
NOTE
To perform the diagnostic test properly, the following conditions
must be met:
Environmental temperature:
23°C ±5°C
Warm up time: > 30 minutes
NOTE
Do not operate front panel keys, keyboard and mouse during the
diagnostic test. Changing the instrument setting while the diag-
nostic test is in progress will cause incorrect test results.
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