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Diagnostics
WARNING
The 8510XF is not designed to be repaired by the user in the event of a
malfunction.
Each instrument in the 8510XF system contains lethal voltages when the
instrument has ac power applied. Refer to the safety information included in
the "Safety/Licensing" section of the 851OC Network Analyzer On-Site Service
Manual, which is included with each 8510XF system. Servicing must be
performed by qualified personnel only.
If you are unable to resolve the problem using the procedures above, you
will need to contact Agilent Technologies customer engineering (see
"Contacting Agilent" on page
Before calling for service, however, it is a good idea to take certain
preparatory steps, so that the problem can be resolved as quickly as possible:
Define the problem
The more clearly the problem is defined, the more quickly it can be solved.
Which functions of the system are affected? Does the malfunction occur
only in a particular frequency range, or only in a particular operating mode?
Are all four S-parameters affected in the same way?
Record any error messages
Does the network analyzer screen display any error/caution messages? If so,
make a note of them. Although the significance of a particular message may
not be obvious at the time it is displayed, the information will later be useful
to customer engineers in tracking down the cause of the problem.
For help in interpreting error/caution messages, see Chapter 4 of the 8510C
On-Site Service Manual. Also, see
manual for messages that are specific to the 8510XF.
8510C diagnostics
Run the built-in diagnostic routines of the 8510C (described in the "Self Test
Failures" section of the 8510C On-Site Service Manual). If no faults are
detected, this indicates that the failure is not caused by a malfunction in the
network analyzer itself.
Check unratioed power levels
The procedure for checking unratioed power levels is described under
"System Operational Test" on page
quick check of system functionality; it can also be used as a diagnostic tool,
to establish whether or not the network analyzer is receiving an appropriate
IF signal for each of the four S parameters.
v).
"New Messages" on page 7-49
2-39. There, the procedure is used as a
8510XF Network Analyzer Systems 5-39
System Maintenance
Troubleshooting
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