CMU RF: Connection Control
1100.4903.12 4.73 E-10
Level
The Level section defines the trigger thresholds if the measurement is triggered by
the RF Power or IF Power (see Source function above) respectively. Both thresh-
olds are defined relative to the maximum input level set in the Analyzer tab (see RF
Max. Level softkey on p. 4.59). The Level settings have no influence on Free Run
or External trigger measurements.
Note: The trigger levels are always relative to the current maximum input
level. If RF Max. Level is set manually (RF Mode = Manual), the cur-
rent input level is constant and equal to the setting value. In autorang-
ing mode (RF Mode = Auto), the current maximum input level is dy-
namically adapted to the measured RF input level; the trigger levels
change accordingly.
The RF Power trigger threshold is the RF input signal level (Wideband Power, see
p. 4.68) beyond which the trigger condition is satisfied and a measurement is initi-
ated.
Low Low trigger threshold, equal to approx. the RF Max. Level –26
dB
Medium Medium trigger threshold, equal to approx. the RF Max. Level –
16 dB
High High trigger threshold, equal to approx. the RF Max. Level –6 dB
The IF Power trigger threshold is the IF trigger signal level beyond which the trig-
ger condition is satisfied and a measurement is initiated. The IF Power input value
defines the trigger threshold relative to the maximum input level:
IF power trigger threshold = <RF Max. Level> + <IF Power>
Remote control
TRIGger[:SEQuence]:THReshold:RFPower LOW | MEDium | HIGH
TRIGger[:SEQuence]:THReshold:IFPower <Power>
Slope
Slope qualifies whether the trigger event occurs on the Rising Edge or on the Fal-
ling Edge of the trigger signal. The setting has no influence on Free Run measure-
ments.
Remote control
TRIGger[:SEQuence]:SLOPe POSitive | NEGative
Ext. Trigger
(AUX 3/4)
Ext. Trigger (AUX 3/4) qualifies whether the external trigger signal is fed in at Pin 6,
Pin 7, or Pin 8 of the AUX 3 connector. The setting only has effect if the trigger
source is an External signal.
The CMU can be ordered with the auxiliary connector AUX 4 on the rear panel
configured as an external trigger input. In this case the Ext. Trigger... pin selection
refers to AUX 4; the front panel connector AUX 3 is disconnected.
Remote control
TRIGger[:SEQuence]:SLOPe:EXTernal PIN6 | PIN7 | PIN8
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