INITiate
Immediately changes the state of the triggering system from "idle" to "wait-for-trigger", and clears the previously set
of readings from reading memory. Scanning will begin when the specified trigger conditions are satisfied following
the receipt of INITiate command. If the trigger system is not initiated, all triggers are ignored.
Parameter Typical return
(none) (none)
Use the INITiate command with CONFigure and FETCh?. The INITiate command places the instrument in the "wait-for-trigger" state, scans
the specified channels when the rear-panel Ext Trig Input line is pulsed (low by default), and then sends the readings to reading memory. The
FETCh? command transfers the readings from reading memory to the instrument's output buffer.
CONF:VOLT:DC 10,0.003,(@103,108)
TRIG:SOUR EXT
INIT
FETC?
Typical response: +4.27150000E-03,+1.32130000E-03
– The INITiate command is an "overlapped" command. This means that after executing INITiate, you can send
other commands that do not affect the measurements.
– You can save up to 100,000 readings in reading memory and all readings are automatically time stamped. If read-
ing memory overflows, the new readings will overwrite the first (oldest) readings saved; the most recent readings
are always preserved. No error is generated, but the Reading Memory Overflow bit (bit 12) is set in the Ques-
tionable Data Register's condition register (see STATus Subsystem).
– If a scan list containing multiplexer channels is currently defined (see ROUTe:SCAN command), the INITiate com-
mand performs a scan of the selected channels. When the scan is initiated, the instrument will open all channels
in modules that contain one or more channels in the scan list.
– The instrument scans the list of channels in ascending order from slot 1 through slot 3 (channels are re-ordered
as needed).When you specify a range of channels in the <ch_list>, the channels are always sorted in ascending
order. Therefore, (@109:101) will always be interpreted as 101, 102, 103,..., 109.
– Once you initiate a scan, an error will be generated if you attempt to change any measurement parameters
(CONFigure and SENSe commands) or the triggering configuration (TRIGger commands).
Keysight DAQ970A/DAQ973A Programming Guide 155
2 SCPI Programming
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