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3 - 16 USING THE COMBISCOPE INSTRUMENTS
3.3.7 Trigger control via GPIB
You need a separate GPIB command to start a measurement synchronized with
other instruments. This is done by sending the
*
TRG command or the GET
(Group Execute Trigger) code. The MEASure? and READ? queries do not allow
you to do so, because such a setup causes a query error. With the
INITiate[:IMMediate] and FETCh? concept, it is possible to meet the requirements
of such applications.
Example:
CONFigure:AC Configures the instrument to measure the AC-RMS
voltage.
TRIGger:SOURce BUS Specifies that the acquisition is to be triggered by
GET or
*
TRG.
INITiate Starts the measurement process.
*
TRG Triggers the acquisition.
FETCh:AC? Determines and returns the AC-RMS value.