7 - Programming the DC Source

Enabling 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 is disabled, ignoring all triggers. Sending the following commands at any time returns the trigger system to the idle state:

ABOR *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:

INIT:SEQ1 or

INIT:NAME TRAN

After a trigger is received and the action completes, the trigger system will return to the idle state. Thus it will be necessary to enable the system each time a triggered action is desired.

To keep the transient trigger system initiated for multiple triggers without having to send an initiate command for each trigger, use:

INIT:CONT:SEQ1

ON

or

INIT:CONT:NAME

TRAN, ON

Selecting the Output Trigger Source

The only trigger source for output triggers is a command from the bus. Since BUS is the only trigger source, the following command is provided for completeness only:

TRIG:SOUR BUS

Generating Triggers

Single Trigger

After you have specified the appropriate trigger source, you can generate triggers by sending one of the following commands over the GPIB:

TRIG:IMM

*TRG

an IEEE-488 Group Execute Trigger bus command

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. INITiate:CONTinuous:SEQuence1 OFF returns the system to single trigger mode.

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Agilent Technologies 66309B Enabling the Output Trigger System, Selecting the Output Trigger Source, Generating Triggers
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66111A, 66309B, 66311B, D specifications

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