Command Groups
To set up a video
trigger, set the A trigger type to
VIDeo using the
command TRIGger:A:TYPe.ThenuseTRIGger:A:VIDeo:SOUrce,
TRIGger:A:VIDeo:STANdard,TRIGger:A:VIDeo:CUSTom{:FORMat|:TYPe},
and related commands.
Sequence Trigger
Sequence triggering occurs when both the A and B triggers are used in edge
triggering. Using an MDO4000/B/C oscilloscope with an MDO4TRIG application
module installed, you can use the RF power level as a source in a sequence trigger.
To set up a sequence trigger, first set up an edge trigger for the A channel as
above. Then use TRIGger:B:EDGE:COUPling, TRIGger:B:EDGE:SLOpe,and
TRIGger:B:EDGE:SOUrce.
Trigg ering on the RF Power
Level (MDO4000/B/C Series
Models Only)
The MDO4000/B/C allows you to trigger on a change in the RF power level
as a source for Edge triggering. This enables your oscilloscope to trigger
as the RF power envelope passes through a specific power level. Using an
MDO4000/B/C model with an MDO4TRIG application module installed, the RF
power
level can also be used as a source for pulse width, timeout, runt, logic and
sequence (A and B) triggers.
To do t
his, use TRIGger:A:PULSEWidth:SOUrce, TRIGger:A:TIMEOut:
SOUrce, TRIGger:A:RUNT:SOUrce, TRIGger:A:LOWerthreshold:RF,
TRIGger:A:UPPerthreshold:RF, TRIGger:A:LOGIc:INPut:CLOCk:SOUrce,
TRIGger:A:LOGIc:INPut:RF, TRIGger:A:LOGIc:THReshold:RF,etc.
The RF power level being triggered on is the total power acquired within the
band, not just the current span.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-79
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