Remote control commands
R&S
®
NRP18S-xx
47
User Manual 1178.3686.02 ─ 07
Otherwise, as many measurement cycles are performed as determined by the trig-
ger count.
8.5.2.3
Trigger sources
The possible trigger conditions and the execution of a trigger depend on the selected
trigger mode and trigger source.
If the signal power exceeds or falls below a reference level set by the trigger level, the
measurement is started after the defined delay time. Waiting for a trigger event can be
skipped.
Trigger source
Description
Remote commands to initiate the measurement
"Hold"
Triggered by the remote command.
"Immediate"
Measures immediately, does not wait for trigger
condition.
-
"Internal"
Uses the input signal as trigger signal.
"External
1"
Uses the digital input signal supplied using a dif-
ferential pair in the 8-pin sensor cable.
"External
2"
Uses the digital input signal supplied at the SMB
connector.
"Bus"
Triggered by the remote command.
8.5.2.4
Dropout time
The dropout time is useful when dealing with signals with several active slots, for
example GSM signals, see
. When measuring in sync with the signal, a trig-
ger event is to be produced at A, but not at B or C.
p
t
A
B
C
A
D
E
F
D
1
1
1
2
3
Figure 8-1: Significance of the dropout time
Controlling the measurement
