Use the following commands to select a trigger source:
Front Panel Menu Reference SCPI Command
Not available To selectBus triggers:
TRIG:TRAN:SOUR BUS
To selectdigital pin 5 as the trigger:
TRIG:ACQ:SOUR PIN5
To selecta voltage or current level:
TRIG:ACQ:SOUR VOLT1
TRIG:ACQ:SOUR CURR1
To selectan output transient as trigger:
TRIG:ACQ:SOUR TRAN1
To selectexpression1 as the trigger:
TRIG:ACQ:SOUR EXPR1
Initiate the acquisition system
When the unit is turned on, the trigger system is in the idle state.In this state, the trigger system is
disabled, ignoring all triggers.The INITiate commands enable the trigger system to receive triggers.
Front Panel Menu Reference SCPI Command
Not available
To initiate the measurement trigger system:
INIT:ACQ
It takes a few milliseconds for the instrument to be ready to receive a trigger signal after receiving the
INITiate:ACQuire command. If a trigger occurs before the trigger system is ready for it, the trigger will
be ignored. You can test the WTG_meas bit in the operation status register to know when the
instrument is ready to receive a trigger after being initiated.
Front Panel Menu Reference SCPI Command
Select Measure\Control.
The Trig state field indicates "Initiated".
To query the WTG_meas bit (bit 3):
STAT:OPER:COND?
If bit 3 is set in the query response, the WTG_meas bit is true, and the instrument is ready to receive
the trigger signal. Refer to Status Tutorial for more information.
The instrument executes one measurement acquisition each time a bus, external,
pin, transient, or expression trigger command is received. Thus, it will be necessary
to initiate the trigger system each time a triggered measurement is desired.
Trigger the Measurement
The trigger system is waiting for a trigger signal in the initiated state. You can immediately trigger the
measurement as follows:
Keysight N6900/N7900 Series Operating and Service Guide 139
4 Using the Advanced Power System
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