Rohde & Schwarz CMU 200 - TX Level Settling Time; TX Harmonics; TX Non Harmonics; TX In-Band Spurious Signals

Manual Test Procedure R&S CMU
1100.4903.82 1.12 E-5
TX Level Settling Time
Preparation:
Test setup TX5, in addition trigger cable from R&S CMU (D-sub connector AUX3,
pin2) to analyzer.
R&S CMU: Connector RF3 OUT 1GHz, Ramping On, Hopping Off.
Analyzer: Sweep time = 40 µs, Center = 1 GHz , Span = 0, RBW = 10
MHz, external trigger.
Control:  Set R&S CMU to frequency = 1 GHz, specified level and ramping mode.
Test:  The time period from the trigger
point to the point in time when the nominal
level < 0.5 dB has been reached is measured.
TX Harmonics
Preparation: Test setup TX5, no external trigger
Analyzer: Center = 2 x f
nom
or Center = 3 x f
nom
, Span = 1 MHz.
Control:  Set R&S CMU to connector RF1, specified frequency, level = –27 dBm.
Test: The suppression of the signal at twice or three times the nominal frequency is
measured relative to the nominal signal.
Control:  Set R&S CMU to connector RF2, specified frequency, level = –10 dBm.
Test: The suppression of the signal at twice or three times the nominal frequency is
measured relative to the nominal signal.
Control:  Set R&S CMU to connector RF3 OUT, specified frequency, level = +10 dBm.
Test: The suppression of the signal at twice and three times the nominal frequency is
measured relative to the nominal signal.
TX Non Harmonics
TX In-Band Spurious Signals
Spurious signals within the specified frequency bands are checked.
Preparation Test setup TX5, no external trigger
Analyzer Start/Stop = specified frequency range, RBW = 100 kHz
Control:  Set R&S CMU to connector RF3 OUT, specified setting frequency, level = 0
dBm.
Test: The suppression of the signal is measured at the test frequency relative to the set
signal.