32 Impedance Analyzer
1 Troubleshooting
Troubleshooting Using Diagnostic Test
The E4990A 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.
To perform the diagnostic test properly, the following conditions must be
met:
Environmental temperature: 23°C ±5°C
Warm up time: > 30 minutes
Do not operate front panel keys, keyboard and mouse during the
diagnostic test. Changing the instrument setting while the diagnostic test
is in progress will cause incorrect test results.
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