Remote Control - Commands
R&S NRP-Z28/-Z98
1170.8966.12
6.30
E-4
The query yields the number of measurements performed with the
INIT:IMMediate
command after a
measurement start.
Default setting:
1
TRIGger:DELay[?] x to 100.0
This command is used to set a trigger delay for all measurements in sync with the signal except in the
Burst Average
mode. It provides a time offset to the physical trigger event equal to the entered value.
The trigger can thus be shifted to a point in time of the measurement signal that is significant for the
measurement, for example to the start of the first timeslot for the
Timeslot Average
mode. If external
triggering is used, delay differences between the external trigger signal and the measurement signal
can be compensated for with a trigger delay.
It is possible to set negative trigger delays, i.e. the trigger point can occur before the physical trigger
event. No matter which measurement mode is selected, the negative limit is –5 ms. If the trigger delay
is entered in the
Trace
mode, an additional condition must be met: The sum of the start of recording
and the trigger delay must not exceed the length of –5 ms (see notes on the
SENSe:TRACe:OFFSet:TIME
command). If full use is made of this value, the order in which the trigger
delay and the start of recording are entered determines whether a trigger delay down to –5 ms can be
set. When a different measurement mode is selected, the full –5 ms become immediately available
again. When switching (back) to the
Trace
mode, the trigger delay that has been set is retained and, if
there is a conflict, the start of recording is adjusted automatically.
The time resolution of the trigger delay is approx. 7
S
s with internal triggering and approx. 1
S
s with
external triggering.
Any trigger delay that is set comes into effect irrespective of the defined trigger source, but this is only
useful with the
Internal
und
External
settings.
Lower limit x of the parameter
Timeslot Average
mode: x = –0.005
Trace
mode:
x = – (<
SENSe:TRACe:OFFSet:TIME
> + 0.005)
Default setting:
0.0 [s]
TRIGger:DELay:AUTO[?] OFF | ON
TRIGger:DELay:AUTO ON
ensures by means of an automatically determined delay that a
measurement is only started after the sensor has settled. This is relevant mainly for the R&S NRP-Z98
sensor, which takes up to 20 ms to fully settle after a sharp change of the input power (negligible for the
R&S NRP-Z28). If the automatic trigger delay was activated with the
TRIGger:DELay:AUTO ON
command, it has the following effect:
After exiting the
WAIT_FOR_TRIGGER
state – initiated by the trigger event – the first analog-digital
conversion is not performed until the settling time of the sensor has elapsed once. If the measurement
cycle has to be repeated due to an averaging factor other than one, no further delay occurs.
The automatically determined delay is ignored if a longer period was set with
TRIGger:DELay
.
TRIGger:DELay:AUTO OFF
deactivates the automatic trigger delay.
The query yields
•
1
for
OFF
,
•
2
for
ON
.
Default setting:
OFF
