Verifying The A, B, C, D, And R Traces (Standard S-Parameter Mode) - Keysight N5221A Service Manual

Troubleshooting
Measurement System Troubleshooting

Verifying the A, B, C, D, and R Traces (Standard S-Parameter Mode)

The first step is to verify that the A, B,C, D, and R traces are present and that they are approximately level:
• Connect an Open or Short standard from a mechanical calibration kit to each test port (use adapters if
.
necessary)
• Press UTILITY System
• For 2-port analyzer models, traces A, B, R1, and R2 are displayed in four separate data windows as
shown in Figure 4-7. Identifying discrepancies of the traces in these windows can help you to isolate the
faulty assembly.
Figure 4-7 Typical 4-Receiver Display for 2-Port Models
4-26
Service Utilities
, then , then
PNA Series Microwave Network Analyzers
Receiver Display
, then
Service Guide N5222-90001
N5221A/22A
.