Service Guide N5242-90001 4-25
PNA Series Microwave Network Analyzers Troubleshooting
N5242A Measurement System Troubleshooting
Verifying the A, B, C, D, and R Traces (Standard S-Parameter Mode)
NOTE
There is no way to view the frequency offset receiver response (Option 080).
However, some standard S-parameter receiver trace information is helpful in
troubleshooting the frequency offset section of the PNA. It is therefore
recommended that you run this test even if you suspect only the frequency
offset section of a malfunction.
The first step is to verify that the A, B,C, D, and R traces are present and that they are
approximately level:
• Press UTILITY , then , then , then .
• For 2-port analyzer models, traces A, B, R1, and R2 are displayed in four separate data
windows as shown in Figure 4-6. Identifying discrepancies of the traces in these
windows can help you to isolate the faulty assembly.
Figure 4-6 Typical 4-Channel Display for 2-Port Models
System
Service Utilities Receiver Display
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