The TRIGger:SEQuence1:SOURce command sets the trigger source to BUS or IMMediate.
When the Trigger Source is set to IMMediate, the change is executed immediately causing
the voltage and/or frequency to change to a new setting. When the Trigger Source is set to
BUS, the trigger subsystem goes to the WTG (Waiting For Trigger) state. When a software
trigger is applied with the TRIGger:SEQuence1:IMMediate or *TRG command, the change is
executed.
When the operation is completed, the trigger subsystem returns to the IDLE state again.
When an ABORt or an equivalent command is sent without executing the trigger, the change
is cancelled, and then the trigger subsystem returns to the IDLE state.
Setting items that are programmable in the sequence 1 group are VOLTage,
VOLTage:OFFSet, and FREQuency. CURRent limit settings are not associated with the trigger
subsystem.
By *RST and *RCL default, VOLTage:MODE, FREQuency:MODE, and VOLTage:OFFSet:MODE
are all reset to FIXed. This means that the sequence 1 trigger function is disabled. The
MODE settings must be explicitly set to STEP for each output item.
The TRIGger:SEQuence1:IMMediate command applies a software trigger to the sequence 1
group
You can also use the *TRG command or the IEEE488.1 get (Group Execute Trigger)
command for the same purpose. This command applies a software trigger to all the
sequence groups, so if there are other sequence groups that are in the INITiated state, their
sequences will also be executed at the same time.
On the PCR-M, you do not have to send an initiate command for every trigger. You can
configure sequences so that they continue automatically.
Operation using a software trigger
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