Triggering Commands
See also “Triggering,” starting on page 80 in chapter 3.
INITiate
This command changes the state of the triggering system from the “idle”
state to the “wait-for-trigger” state. Measurements will begin when the
specified trigger conditions are satisfied after the INITiate command is
received. The readings are placed in the meter’s internal memory (up to
1024 readings can be stored). Readings are stored in memory until you
are able to retrieve them. Use the FETCh? command to retrieve reading
results.
READ?
This command changes the state of the trigger system from the “idle”
state to the “wait-for-trigger” state. Measurements will begin when the
specified trigger conditions are satisfied following the receipt of the
READ? command. Readings are sent immediately to the output buffer.
TRIGger:SOURce {BUS | IMMediate | EXTernal}
This command selects the source from which the meter will accept a
trigger. The meter will accept a software (bus) trigger, an immediate
internal trigger (this is the default source), or a hardware trigger from
the rear-panel Ext Trig (external trigger) terminal. After you set the
trigger source, you still need to send an INITiate command to move the
meter to the wait-for-trigger state. [volatile memory]
TRIGger:SOURce?
This command queries the present trigger source.
Returns “
BUS”, “IMM”, or “EXT”.
Chapter 4 Remote Interface Reference
Triggering Commands
154
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