Frequency Modulation Residual FM measures the unwanted frequency variation in the CW signal of the DUT when the DUT's external FM is turned on.
A spectrum analyzer makes a direct measurement of the signal generator’s residual FM using the analyzer’s measurement receiver personality.
Test Equipment |
Recommended Models |
Alternative Models |
Spectrum Analyzer |
N9030B Opt 5xx1, N9063EM0E Analog Demodulation Measurement application |
N9030A2 Opt 5xx1, N9063EM0E Analog Demodulation Measurement application E444xA3 Opt 233 Measuring Receiver Personality |
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Connect all test equipment as shown.
Connect GPIB cables to all GPIB-controlled test equipment.
While performing this performance test, follow all instructions on the controller display.
Setup for Frequency Modulation Residual FM
If this performance test fails, perform the following steps in order:
Check the equipment setup (see above). If the setup is incorrect, make the necessary corrections and rerun the Performance Test.
If this test fails with the equipment set up properly, refer to the troubleshooting section of the signal generator's service guide. If you do not have a printed copy of the service guide (Option OBW), one is available either on the CD-ROM that came with your signal generator shipment or on the Keysight Website.
If you cannot correct the problem using the troubleshooting procedures in the Service Guide, obtain service from Keysight Technologies. Refer to Contacting Keysight Technologies.