R&S CMU Manual Test Procedure
1100.4903.82 1.13 E-5
TX Fixed Spurious Signals
Fixed spurious signals are checked.
Preparation: Test setup TX5, no external trigger.
Analyzer: Center = specified test frequency, RBW = 100 kHz, Span = 1 MHz.
Control: Set R&S CMU to connector RF3 OUT, specified setting frequency, specified
level.
Test: The suppression of the signal is measured at the test frequency relative to the set
signal.
TX SSB Phase Noise
Preparation Test setup TX5, no external trigger
Connect spectrum analyzer or modulation analyzer to RF3 OUT.
Control: Set R&S CMU generator to specified RF frequency.
Output level at RF3 OUT 0 dBm,
Analyzer to specified center frequency,
Span = 50 kHz to 5 MHz, RBW = Span/500,
Noise measurement function.
Test Measure the phase noise at the specified spacing from the carrier.
TX Residual FM
Preparation: Test setup TX5, no external trigger.
Connect spectrum analyzer or modulation analyzer to RF1.
Control: Set R&S CMU generator to the specified RF frequency.
Output level at RF1 –27 dBm, analyzer to specified center frequency, FM
demodulator.
Test: The residual FM with the specified weighting is measured.
TX Residual AM
Preparation: Test setup TX5, no external trigger.
Connect spectrum analyzer or modulation analyzer to RF1.
Control: Set R&S CMU generator to specified RF frequency.
Output level at RF1 –27 dBm, analyzer to specified center frequency, AM
demodulator.
Test: The residual AM with the specified weighting is measured.
To Next Page
Loading...
Need help?
General
