Measurement System Troubleshooting; Before You Begin-Consider: Where Do You See A Problem - Keysight Technologies N5224/5A Service Manual

Troubleshooting

Measurement System Troubleshooting

Measurement System Troubleshooting
This section provides troubleshooting procedures for the measurement portion
of the PNA. In this section, the analyzer is used as a tool to help isolate the
suspected faulty functional group. Once the faulty functional group is
determined, troubleshooting steps are provided to help you isolate the faulty
assembly or part.
Some procedures in this chapter reference your analyzer's DSP version.
Click Help > About Network Analyzer and note the DSP version shown.
Before you begin—consider: Where do you see a problem?
If you are seeing a problem at Preset, perform the standard S-parameter test
set troubleshooting procedure, starting with:
Traces (Standard S-Parameter Mode)" on page
You should also consider the problem indications that are observed and
whether the observed condition is a soft failure or a hard failure.
Soft Failure
With a soft failure, the network analyzer's performance has degraded to an
unacceptable level, yet it continues to operate and displays no error messages.
For this type of failure, performance tests must be conducted to isolate the
problem. Begin with viewing the error terms as described in
page
required, refer to
Hard Failure
With a hard failure, the PNA does not perform well and displays one or more
error messages. To diagnose and repair a hard failure:
— Check "Help
— Check "EEPROM
— Check error messages. Refer to
Help About
Go to the Help About screen by pressing UTILITY
About NA...
your analyzer. If any of the information is incorrect, contact Keysight
Technologies. Refer to
4-26
8-2. This will help to isolate most problems. If additional tests are
"Performance Tests" on page
About" to verify that the model number and options listed
match the actual analyzer model and options.
Headers"
suggestions outlined there for each applicable error message.
. Verify that the information displayed in this screen is correct for
"Contacting Keysight" on page
"Verifying the A, B, C, D, and R
4-28.
3-31.
to verify that the data there is correct.
"Error Messages"
System
Keysight N5224A/25A Service Guide
"Error Terms" on
and follow the
, then , then
Help
2-7.