BTS Master Programming Manual : Spectrum Analyzer Commands : :TRIGger Subsystem
 
:TRIGger Subsystem
This subsystem contains commands related to the triggering of instrument functions for the purposes of synchronization. Related commands appear in the ABORt and INITiate subsystems.
:TRIGger[:SEQuence]:SOURce IMMediate|EXTernal|VIDeo
:TRIGger[:SEQuence]:SOURce?
Title
Trigger Source
Description
This command defines the trigger source. IMMediate triggering is the equivalent of free‑run triggering. EXTernal triggering is triggered when a TTL signal is applied to the External Trigger input connector. EXTernal triggering is always done on the rising edge of the signal. It is available only in zero span mode.
Parameter
IMMediate|EXTernal|VIDeo
Parameter Type
<char>
Default Value
Immediate
Range
IMMediate|EXTernal|VIDeo
Related Command
:TRIGger[:SEQuence]:VIDeo:LEVel
:TRIGger[:SEQuence]:VIDeo:POSition
Front Panel Access
Shift‑3 (Sweep), Triggering, Source, Free Run|External|Video
:TRIGger[:SEQuence]:VIDeo:DELay <percentage> or <time>
:TRIGger[:SEQuence]:VIDeo:DELay?
Title
Video Trigger Position (time)
Description
This command sets the video triggering delay as either a percentage of the display or in time units. If setting the delay by time is desired, then time units must be specified when sending the command. The query version of this command will return the video triggering delay as a percentage.
Default Value
–1
Default Unit
%
Range
–100% to +200% (–1 ms to +2 ms)
Example
To set the delay to 1 ms:
:TRIGger:SEQuence:VIDeo:DELay 1 ms
To set the delay to 1 %:
:TRIGger:SEQuence:VIDeo:DELay 1
Front Panel Access
Shift‑3 (Sweep), Triggering, Delay
 
:TRIGger[:SEQuence]:VIDeo:LEVel <amplitude>
:TRIGger[:SEQuence]:VIDeo:LEVel?
Title
Video Trigger Level
Description
This command sets the video triggering level.
Parameter
<amplitude>
Default Value
–65.0 dBm
Default Unit
Current amplitude unit
Range
30 dBm to –150 dBm
Front Panel Access
Shift‑3 (Sweep), Triggering, Level
:TRIGger[:SEQuence]:VIDeo:POSition <percentage>
:TRIGger[:SEQuence]:VIDeo:POSition?
Title
Video Trigger Position
Description
This command sets the video triggering position as a percentage of the display. When the sweep is triggered, the trigger point is drawn at the location defined by the position. The graph appearing to the left of the trigger position is data acquired before the trigger. The graph appearing to the right of the trigger position is data acquired after the trigger.
Parameter
<percentage>
Default Value
1
Default Unit
%
Range
0% to 100%
Front Panel Access
Shift‑3 (Sweep), Triggering, Delay