As previously discussed, a trigger can also be generated by a digital pin, or a user-defined expression.
If any of these systems are configured as the trigger source, the instrument will wait indefinitely for the
trigger signal. If the trigger does not occur, you must manually return the trigger system to the idle
state.The following commands return the trigger system to the idle state:
Front Panel Menu Reference SCPI Command
Select Transient\Control.
Then selectthe Abort control.
ABOR:TRAN
When a trigger is received, the triggered functions are set to their programmed transient values.
When the triggered actions are completed, the trigger system returns to the idle state. You can test
the TRAN-active bit in the Operation Status register to know when the transient trigger system has
returned to the idle state.
Front Panel Menu Reference SCPI Command
Select Transient\Control.
The Trig state field indicates "Idle".
To query the TRAN-active bit(bit6):
STAT:OPER:COND?
If a bit value of 64 is returned in the query, the TRAN-active bit is true, and the transient action is NOT
complete. When the TRAN-active bit is false, the transient action is complete. Refer to Status Tutorial
for more information.
Programming a Step Transient
Program the Step Levels
Use the following commands to program the triggered output step level. The output will go to this
level when the trigger is received. In the front panel menu, you can only program the step level based
on the priority mode that you are operating in - voltage or current priority.
Front Panel Menu Reference SCPI Command
Select Transient\Step.
Select the Trig Voltage box to setthe voltage. Select the
Trig Current box to setthe current. Enter a value and
press Select.
To seta voltage step level of 15 V use:
VOLT:TRIG 15
To seta current step level of 1 A use:
CURR:TRIG 1
Generate a Trigger Out Signal
The output step can generate a trigger signal that can be routed to a pin on the digital port that has
been configured as a trigger output (TOUT). Use the following commands to generate a trigger signal
when the step occurs:
Front Panel Menu Reference SCPI Command
Select Transient\Step.
Check Enable Trigger Output. Then press Select.
To program the Step to generatea trigger signal:
STEP:TOUT ON
4 Using the Advanced Power System
120 Keysight N6900/N7900 Series Operating and Service Guide
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