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Trigger
Offset
Adjusts the accumulated offset between the periodic timer events and the trigger event. Adjusting the
accumulated offset is different than setting an offset, and requires explanation.
The periodic timer is usually not synchronized with any external events, so the timing of its output
events has no absolute meaning. Since the timing relative to external events (RF signals) is important,
you need to be able to adjust (offset) it. However, you have no direct way to see when the periodic timer
events occur. All that you can see is the trigger timing. When you want to adjust the trigger timing, you
will be changing the internal offset between the periodic timer events and the trigger event. Because the
absolute value of that internal offset is unknown, we will just call that the accumulated offset. Whenever
the Offset parameter is changed, you are changing that accumulated offset. You can reset the displayed
offset using Reset Offset Display. Changing the display does not change the value of the accumulated
offset, and you can still make additional changes to accumulated offset.
To avoid ambiguity, we define that an increase in the "offset" parameter, either from the knob or the
SCPI adjust command, serves to delay the timing of the trigger event.
Example: TRIG:FRAM:PER 100 ms
Dependencies: The invalid data indicator turns on when the period is changed, until the next
sweep/measurement completes.
Couplings: The same period is used in the Gate Source selection of the period timer.
Preset: 20 ms
GSM: 4.615383
State Saved: Saved in instrument state
Min: 100.000 ns
Max: 559.0000 ms
Default Unit: S
Initial S/W Revision: Prior to A.02.00
Key Path:
Trigger, Periodic Timer
Remote Command: :TRIGger[:SEQuence]:FRAMe:OFFSet <time>
:TRIGger[:SEQuence]:FRAMe:OFFSet?
Example: TRIG:FRAM:OFFS 1.2 ms