Rohde & Schwarz CMU200 - RX Dynamic; Average Noise Level; RX Residual FM;AM

CMU Manual Test Procedure
1100.4903.82 1.15 E–4
RX Residual FM/AM
Preparation: Test setup RX4,
Generator = f
iCMU
; level = –20 dBm.
Control: ½ Set CMU to connector RF4 IN, Max Level = –20 dBm and to desired
frequency.
½ Switch on frequency-selective power meter.
Test: The measurement is taken with an external FM/AM demodulation instrument (FSE
with FSE-B7) via the IF3RXCH1 BNC connector at the rear panel of the CMU.
½ Set the FSE to desired frequency, ref. level, AF filters.
RX Dynamic/ Average Noise Level
Preparation: No signal is fed in, CMU generator is OFF.
Control: Set CMU to given receive frequency, Max. Level, Bandwidth, Mode = Low Noise.
Test: Use frequency-selective power meter, measurement bandwidth = 1 kHz / 500 kHz,
measured value in dB below reference level (Max. Level).