Troubleshooting
The R&S SZU works only with a vector signal generator from Rohde & Schwarz. The vector signal generator controls the converter, and displays notifications, if deviations or malfunctions occur.
If hardware problems occur in the R&S SZU, the status LED lights up red, see "Status LED".
Both, the permanently lighting red and the red blinking Status LED indicate hardware problems that result in a malfunction of the R&S SZU.
Proceed as follows:
Permanently red lighting status LED indicates an internal error, e.g., overheating of the R&S SZU:
Make sure that the fan openings are free, and the minimum distance of 10 cm to a nearby object is kept.
Check if you can feel the ventilation.
If the ventilation works properly, continue with step 4.
Blinking red status LED indicates an external error:
Make sure that you have connected all cables.
Check that the plugs are firmly connected.
If you cannot detect any error in the connections, continue with step 5.
Set up the measurement again.
Disconnect the R&S SZU from the vector signal generator.
Preset the signal generator.
Reconnect the R&S SZU as described in "To set up the measurement".
If problems still exist:
Switch off the vector signal generator.
Switch off the R&S SZU by disconnecting from the DC supply.
Wait until the instruments have cooled down.
Switch on both instruments and start the measurement again.
If hardware problems persist, contact the Rohde & Schwarz customer support.