Technical data

Service Guide N5230-90025 4-43
PNA Series Microwave Network Analyzers Troubleshooting
N5230C Measurement System Troubleshooting
If the measured signal is not present on any of the channels and the analyzer is not equipped with Option
146 or 246, replace the A20 mixer brick. Refer to “Removing and Replacing the A20 Mixer Brick
(QuintBrick)” on page 7-36.
Checking the A29 Reference Channel Switch, Limiter, and DC Block (Options 146 and 246 Only)
1. Set the network analyzer for an S
11
measurement with a CW frequency of 1 GHz.
2. Connect a spectrum analyzer to the front-panel Reference Source Out connector.
3. If the measured signal is present, continue with step 5.
4. If the measured signal is not present replace the A29 reference channel switch, the limiter, or the DC
block. Refer to “Removing and Replacing the A29 Reference Switch, Limiter, and DC Block” on
page 7-44.
5. Set the network analyzer for an S
33
measurement.
6. If the measured signal is present, replace the A20 mixer brick. Refer to “Removing and Replacing the A20
Mixer Brick (QuintBrick)” on page 7-36.
7. If the measured signal is not present replace the A29 reference channel switch, the limiter, or the DC
block. Refer to “Removing and Replacing the A29 Reference Switch, Limiter, and DC Block” on
page 7-44.