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7 - Programming the DC Source
Initiating the Output Trigger System
When the dc source is turned on, the trigger subsystem is in the idle state. In this state, the trigger
subsystem ignores all triggers. Sending the following commands at any time returns the trigger system to
the idle state:
ABORt
*RST
*RCL
The INITiate commands move the trigger system from the idle state to the initiated state. This enables
the dc source to receive triggers. To initiate for a single triggered action, use:
INITiate:SEQuence1
INITiate:NAME TRANsient
After a trigger is received and the action completes, the trigger system will return to the idle state. Thus it
will be necessary to initiate the system each time a triggered action is desired.
To keep the transient trigger system initiated for multiple actions without having to send an initiate
command for each trigger, use:
INITiate:CONTinuous:SEQuence1 ON
INITiate:CONTinuous:NAME TRANsient, ON
Generating Triggers
You can only program output triggers over the HP-IB bus. Since BUS is the only trigger source for
output triggers, the following command is provided for completeness only:
TRIGger:SOURce BUS
Single Triggers
After you have specified the appropriate trigger source, you can generate triggers by sending one of the
following commands over the HP-IB:
TRIGger:IMMediate
*TRG
a group execute trigger
When the trigger system enters the Output Change state upon receipt of a trigger (see figure 7-1), the
triggered functions are set to their programmed trigger levels. When the triggered actions are completed,
the trigger system returns to the idle state.
Multiple Triggers
When you have programmed INITiate:CONTinuous:SEQuence1 ON as previously discussed, the trigger
system does not need to be initiated for each trigger; it responds to the next trigger as soon as it is
received. When each triggered action completes, the trigger system returns to the initiated state to wait
for the next trigger.
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