R&S ESU Series Operating Manual page 699

R&S ESU
6.21 TRIGger Subsystem
The TRIGger subsystem is used to synchronize instrument actions with events. It is thus possible to con-
trol and synchronize the start of a sweep. An external trigger signal can be applied to the connector at
the rear panel of the instrument. A distinction is made between TRIGger1 (screen A) and TRIGger2
(screen B).
TRIGger<1|2>[:SEQuence]:SOURce IMMediate | EXTernal | VIDeo | IFPower
This command selects the trigger source for the start of a sweep.
The trigger source selection has to be done with the command TRIGger<1|2>[:
SEQuence]:SYNChronize:ADJust.
The selection of trigger sources is extended by option FM Demodulator (R&S FS-
K7) (see manual for option).
Parameter:
IMMediate Automatic triggering of the next measurement at the end of the
previous one. The value IMMediate)corresponds to the FREE RUN
setting.
EXTernal The next measurement is triggered by the signal at the external
trigger input.
VIDeo The next measurement is triggered by the detection of a signal at
the video filter output.
IFPower The next measurement is triggered by the detection of a signal at
the instrument IF (10 MHz bandwidth)
Example:
"TRIG:SOUR EXT"
'Selects the external trigger input as source of the trigger signal
Characteristics: *RST value: IMMediate
SCPI: conform
Mode: R, A
TRIGger<1|2>[:SEQuence]:LEVel[:EXTernal]
This command sets the level of the external trigger source.
Example:
"TRIG:LEV 2V"
Characteristics: *RST value: 1.4 V
SCPI: device-specific
Mode: A
TRIGger<1|2>[:SEQuence]:LEVel:IFPower -70 to +30 dBm
This command sets the level of the IF power trigger source.
Example:
"TRIG:LEV:IFP –20DBM"
Characteristics: *RST value: -20 dBm
SCPI: device-specific
Mode: R, A
6.260
Remote Control – Description of Commands
0.5 to +3.5 V
Operating Manual 1302.6163.12 - 03
TRIGger Subsystem