Chapter 7 7-31
Source Troubleshooting
Source Group Troubleshooting Appendix
3. Press to pause the phase lock sequence and determine where the source
is trying to tune when lock is lost.
Refer to “Source Theory Overview” on page 12-14 for additional information regarding
band related problems. Then use the procedures in this chapter to check source functions
at specific frequencies.
Broadband Power Problems
This section assumes that a power problem exists across the full frequency range, but that
no error message is displayed on the analyzer. The problem may affect Port 1, Port 2, or
both. Assemblies in question include:
• A3 source
• A21 directional coupler
• A22 directional coupler (8753ES only)
• A24 solid-state transfer switch (8753ES only)
• any cables from the A3 source to the outputs of port 1 or port 2
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