Default Settings for CONFigure commands
The CONFigure commands select the function, range and resolution in one command. Specify <resolution> in the
measurement's units (V, A, Hz, Ω, and so on). All other parameters are set to their default values as defined in Factory
Reset State.
Using the CONFigure commands
Example 1 - Uses CONFigure command, with READ?
Uses CONFigure and READ? to make an externally-triggered measurement. CONFigure specifies DC voltage meas-
urements but does not place the instrument in the "wait-for-trigger" state. READ? places the instrument in the
"wait-for-trigger" state, initiates a measurement when the rear-panel Ext Trig input is pulsed (low by default), stores
the measurement in reading memory, and transfers the measurement to the instrument's output buffer. The
default range (autorange) and default resolution (10 PLC) are used for the measurement.
CONF:VOLT:DC
TRIG:SOUR EXT
READ?
Typical response: +4.27150000E+00
Example 2 - Uses CONFigure command, with INITiate and FETCh?
This example is like previous example 1, but it uses INITiate and FETCh? instead of READ?. The INITiate command
places the instrument in the "wait-for-trigger" state, triggers a measurement when the rear panel Ext Trig input is
pulsed (low by default), and sends the measurement to reading memory. The FETCh? query transfers the meas-
urement from reading memory to the instrument's output buffer.
CONF:VOLT:DC
TRIG:SOUR EXT
INIT
FETC?
Typical response: +5.34250000E+00
Storing measurements in reading memory with INITiate is faster than sending measurements to the instrument's
output buffer using READ? (provided you do not send FETCh? until done). The INITiate command is also an "over-
lapped" command. This means that after executing INITiate, you can send other commands that do not affect the
measurements. This allows you to check for data availability before initiating a read attempt that might otherwise
time out. The FETCh? query waits until all measurements are complete to terminate. You can store up to 100,000
measurements in the reading memory of the DAQ970A/DAQ973A.
The following example configures the instrument for 2-wire resistance measurements, triggers the instrument to
make one measurement using INITiate, and stores the measurement in reading memory. The 10 kΩ range is selec-
ted with 100 Ω resolution.
CONF:RES 10000, 100
INIT
FETC?
Keysight DAQ970A/DAQ973A Programming Guide 89
2 SCPI Programming
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