Agilent Technologies N5242A Service Manual page 114

Troubleshooting
Measurement System Troubleshooting
— Channel B; W60
— Channel C; W61
— Channel D; W62
— Channel R; W63
2. Disconnect the appropriate flexible RF cable from the output channel to be tested on the
A20 IF multiplexer board.
3. Connect the spectrum analyzer to the open connector.
4. The measured signal on the spectrum analyzer should be at 7.61 MHz.
5. If the measured signal is present, replace the A12 SPAM board. Refer to
Replacing the A4–A13 Boards" on page
6. If the measured signal is not present replace the A20 IF multiplexer board. Refer to
"Removing and Replacing the A20 IF Multiplexer Board" on page
4-40
PNA Series Microwave Network Analyzers
7-14.
N5242A
"Removing and
7-28.
Service Guide N5242-90001