User`s guide

Functions and Features 2
34450A User’s Guide 61
Software (Bus) Triggering
The bus trigger mode is available from the remote interface
only.
The bus trigger mode is initiated by sending a bus trigger
command, after selecting BUS as the trigger source.
• The TRIGger:SOURce BUS command selects the bus
trigger source.
• The MEASure? command overwrites the BUS trigger and
triggers the DMM and returns a measurement.
• The READ? command does not overwrite the BUS trigger,
and if selected, generates an error. It will only trigger the
instrument and return a measurement when the
IMMEdiate trigger is selected.
• The INITiate command only initiates the measurement
and needs a trigger (BUS or EXTernal or IMMEdiate) to
make the actual measurement.
Refer to the Agilent 34450A Programmer’s Reference Helpfile
for the complete description and syntax for these commands.
34450A UG.book Page 61 Tuesday, July 23, 2013 2:43 PM