R&S NRP
Annex: Remote Control - Commands
1144.1400.12
Annex - I.9
E-2
Trigger state system
The accuracy of a result largely depends on how accurately the sequence of a measurement can be
determined. The R&S NRP manages a trigger state system to SCPI 1999.0 for each sensor to define
the exact start and stop time of a measurement. This system defines the sequence of a measurement
cycle. 4 different device states are defined in the trigger state system implemented in the R&S NRP.
IDLE
The R&S NRP is in the idle state and performs no measurement. On power-up of
the R&S NRP, it is in the LOCAL mode and in the IDLE state. All connected
sensors are set to
INIT:CONT ON
to allow measurements to be continuously
displayed. Thus, the IDLE state is exited and the instrument is again in this state
if
INIT:CONT OFF
is sent via the remote control.
INITIATED
This state is a transition state, which is exited immediately after it has been
entered. It has been defined so as to allow the user to decide whether the next
measurement cycle is to be immediately started (
INIT:CONT ON
or all cycles
defined via
TRIG:COUNT
have not yet been processed) or the R&S NRP returns
to the IDLE state. The state is only entered internally and is not noticed by the
user.
WAIT_FOR_TRG
The R&S NRP waits for a trigger event. The source for this event is set via
TRIG:SOUR
. When the event defined in this way occurs, the R&S NRP enters the
MEASURING state.
MEASURING
As long as the R&S NRP measures data, it remains in this state and exits it
immediately after completion of the measurement.
