Rohde & Schwarz CMU200 - TX Harmonics; TX In-Band Spurious Signals; TX Level Settling Time; TX Non Harmonics

CMU Manual Test Procedure
1100.4903.82 1.11 E–4
TX Level Settling Time
Preparation:
Test setup TX5, in addition trigger cable from CMU (D-sub connector AUX3, pin2)
to analyzer.
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: ½ Set CMU to frequency = 1 GHz, specified level and ramping mode.
Test: ½ 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: ½ Set 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: ½ Set 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: ½ Set 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: ½ Set 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.