Keysight E6640A, Measurement Applications User & Programmer Reference

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7 Trigger Functions
Trigger
Dependencies Grayed out if in use by Point Trigger in the Source Setup menu.
Forced to Free Run if already selected and Point Trigger is set to External 1.
State Saved Saved in instrument state
Status Bits/OPC
dependencies
The Status Operation Register bit 5 "Waiting for Trigger" is set at the same time as the Sweeping or
Measuring bit is set. It is cleared when the trigger actually occurs (that is, after the trigger event
occurs and all the applicable trigger criteria have been met). A corresponding pop-up message
("Waiting for trigger") is generated if no trigger signal appears after approximately 2 sec. This
message goes away when a trigger signal appears.
Initial S/W Revision Prior to A.02.00
Trigger Level
Sets the value where the external 1 trigger input will trigger a new sweep/measurement.
Key Path
Trigger, External 1
Remote Command :TRIGger[:SEQuence]:EXTernal1:LEVel <level>
:TRIGger[:SEQuence]:EXTernal1:LEVel?
Example TRIG:EXT1:LEV 0.4 V
Couplings This same level is used for the Ext1 trigger source in the Trigger menu, for the Ext1 selection in the
Periodic Timer sync source (in the Trigger menu and in the Gate Source menu), and also for the Ext1
selection in the Gate Source menu.
Preset 1.2 V
State Saved Saved in instrument state
Min –5 V
Max 5 V
Default Unit V
Backwards
Compatibility SCPI :TRIGger[:SEQuence]:EXTernal:LEVel
For backward compatibility, the parameter EXTernal is mapped to EXTernal1
Backwards
Compatibility SCPI :TRIGger[:SEQuence]:FRAMe:EXTernal1:LEVel
Initial S/W Revision Prior to A.02.00
Trig Slope
Controls the trigger polarity. It is set positive to trigger on a rising edge and negative to trigger on a falling
edge.
Key Path
Trigger, External 1
Remote Command :TRIGger[:SEQuence]:EXTernal1:SLOPe POSitive|NEGative
338 W-CDMA & HSPA Measurement Applications Reference