FETCh?
Waits for measurements to complete and transfers all available readings stored in reading memory to the instru-
ment's output buffer. The readings remain in reading memory will not be erased when read with this command.
Parameter Typical return
(none) (none)
Use the FETCh? command with CONFigure and INITiate. 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
– You can save up to 1,000,000 readings in reading memory and all readings are automatically time stamped. If
reading memory overflows, the new readings will overwrite the first (oldest) readings saved; the most recent read-
ings 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).
– Readings can be acquired during a scan using the multiplexer or multifunction modules.
– Each time you start a new scan, the instrument clears all readings (including alarm data) saved in reading
memory from the previous measurement. Therefore, the contents of reading memory are always from the most
recent scan.
– The instrument clears all readings from reading memory when a new scan is initiated, or after a Factory Reset
(*RST command).
118
Keysight DAQ970A/DAQ973A Programming Guide
2 SCPI Programming
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