Chapter 4 4-13
Start Troubleshooting Here
Digital Control
Verify Internal Tests Passed
1. Press
. The display should indicate:
TEST
0 ALL INT PASS
• If your display shows the above message, go to step 2. Otherwise, continue with this
step.
• If phase lock error messages are present, this test may stop without passing or
failing. In this case, continue with the next procedure to check the source.
• If you have unexpected results, or if the analyzer indicates a specific test failure, that
internal test (and possibly others) have failed; the analyzer reports the first failure
detected. Refer to Chapter 6 , “Digital Control Troubleshooting.”
• If the analyzer indicates failure but does not identify the test, press to search
for the failed test. Then refer to Chapter 6 , “Digital Control Troubleshooting.”
Likewise, if the response to front panel or GPIB commands is unexpected,
troubleshoot the digital control group.
2. Perform the analog bus test by pressing .
• If this test fails, refer to Chapter 6 , “Digital Control Troubleshooting.”
• If this test passes, continue with the next procedure to check the source.
Preset System
19 x1
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