Agilent Technologies HP 8719D Service Manual page 224

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The use of this section is based on several assumptions:
The analog bus has passed test #19. (If not, press Is) SERYfCE !flW
n
TESTS L19) (2-J .E;xE;cEITE TEST.
If the analyzer falls the test, return to "Step 4. Faulty Group Isolation"
q
section of the "Start Troubleshooting Here" chapter in this manual.
If the test passes, continue with this procedure.
q
If you observed a phase lock error message, in "Step 4. Faulty Group
n
Isolation" section of the "Start Troubleshooting Here" chapter in this manual
section of the "Start Troubleshooting Here" chapter in this manual.
Phase Lock Error Message Displayed
1. Press the following keys to view the 0.25V/GHz signal to the YIG oscillator
drives.
Notice that for each band, the waveform should start and stop exactly as
shown in Figure 7-l and Figure 7-2, with only one ramp in each band. A
problem in one band should not affect the appearance of the waveform in
other bands.
74 Source Troubleshooting