Agilent Technologies N5242A Service Manual page 100

Troubleshooting
Measurement System Troubleshooting
• For 4-port analyzer models, traces A, B, C, D, and R are displayed in five separate data
windows as shown in
windows can help you to isolate the faulty assembly.
Figure 4-7 Typical 5-Channel Display for 4-Port Models
• If all traces are present and are similar to the traces in
there are no major problems with the analyzer's measurement system. There may,
however, be a minor failure in the analyzer.
To test further:
— Go to Chapter 3, "Tests and Adjustments"
— If a problem still exists, contact Agilent. Refer to
• If any of the traces are not present, are noisy or distorted, or are at an incorrect level,
then there is a problem with the analyzer's measurement system. Proceed to
Begin Troubleshooting."
4-26
Figure 4-7. Identifying discrepancies of the traces in these
PNA Series Microwave Network Analyzers
Figure 4-6
and perform all the tests in that section.
"Contacting Agilent" on page
Service Guide N5242-90001
N5242A
or Figure 4-7, then
2-13.
"Where to