3-48 Basic DMM Operation Model 2750 Multimeter/Switch System User’s Manual
Basic measurement programming examples
Example #1 — continuous triggering
The following command sequence places the Model 2750 in a continuous trigger mode to
measure ACV. Whenever DATA? is sent, the last measured reading will be sent to the
computer when the Model 2750 is addressed to talk.
SYST:PRES ' Continuous measurement mode (INIT:CONT ON).
FUNC 'VOLT:AC' ' Select ACV function.
DATA? ' Request last measured reading.
Example #2 — one-shot triggering
The following command sequence places the Model 2750 in a one-shot trigger mode to
measure offset-compensated ohms. Whenever READ? is sent, a measurement will be trig-
gered, and the measured reading will be sent to the computer when the Model 2750 is
addressed to talk.
*RST ' One-shot measurement mode (INIT:CONT OFF).
FUNC 'FRES' ' Select Ω4 function.
FRES:RANG 1e3 ' Select 1kΩ range.
FRES:OCOM ON ' Enable offset-compensated ohms.
READ? ' Trigger and return one reading.
Example #3 — temperature measurement using Model 7700
The following command sequence places the Model 2750 in a one-shot trigger mode to
perform a thermocouple temperature measurement at channel 101 (Model 7700 switching
module installed in slot 1). With channel 101 closed, the INIT command triggers one mea-
surement, and the DATA? command sends the measured reading to the computer when it
is addressed to talk.
*RST ' One-shot measurement mode (INIT:CONT OFF).
FUNC 'TEMP' ' Select TEMP function.
UNIT:TEMP F ' Select °F TEMP units.
TEMP:TRAN TC ' Select thermocouple transducer.
TEMP:TC:TYPE J ' Select type J thermocouple.
TEMP:RJUN:RSEL SIM ' Select simulated reference junction.
TEMP:RJUN:SIM 32 ' Set reference temperature to 32°F (ice point).
ROUT:CLOS (@101) ' Close channel 101.
INIT ' Trigger one measurement.
DATA? ' Return measured reading.
2750-900-01.book Page 48 Wednesday, August 3, 2011 7:56 AM
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