IEEE-488 Reference
3-142
3.24 Trigger subsystem
The Trigger subsystem is made up of a series of commands and subsystems to configure the
three layers of the Trigger Model (see paragraph 2.7 and 3.9 for details). These commands and
subsystems are summarized in Table 3-15.
3.24.1 :INITiate commands
[:IMMediate]
:INITiate[:IMMediate] Take 6517A out of idle
Description This command takes the Model 6517A out of the idle state. After all programmed operations are
completed, the instrument leaves the trigger layers and returns to the idle state if continuous ini-
tiation is disabled; (see next command).
:CONTinuous <b>
:INITiate:CONTinuous <b> Control continuous initiation
Parameters <b> = 0 or OFF Disable continuous initiation
1 or ON Enable continuous initiation
Query :CONTinuous? Query continuous initiation
Description When continuous initiation is selected (ON), the instrument is taken out of the idle state. At the
conclusion of all programmed operations, the instrument returns to Arm Layer 1.
:POFLag <name>
:INITiate:POFLag <name> Control No-Operation-Pending flag
Parameters <name> = INCLude Include No-Operation-Pending flag
EXCLude Exclude No-Operation-Pending flag
Query :POFLag? Query Pending Operation Flag status
Description This command is used to include or exclude the No-Operation-Pending flag in the internal pro-
cess of determining whether all pending operations of an initiate command are completed. For
more information on the No-Operation-Pending flag, refer to paragraphs 3.11.5 (*OPC) and
3.11.6 (*OPC?).
3.24.2 :ABORt :ABORt Abort operation
When this action command is sent, the Model 6517A aborts operation and returns to the top of
the Trigger Model. If continuous initiation is disabled, the instrument goes the idle state. If con-
tinuous initiation is enabled, operation continues on into Arm Layer 1.
The abort command resets the source bypasses of the Trigger Model. If scanning, the scan point-
er resets back to the first channel in the scan list.
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