Basic Measurement Programming Examples - Keithley 2750 User Manual

3-48 Basic DMM Operation

Basic measurement programming examples

Example #1
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
FUNC 'VOLT:AC'
DATA?
Example #2
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
FUNC 'FRES'
FRES:RANG 1e3
FRES:OCOM ON
READ?
Example #3
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
FUNC 'TEMP'
UNIT:TEMP F
TEMP:TRAN TC
TEMP:TC:TYPE J
TEMP:RJUN:RSEL SIM
TEMP:RJUN:SIM 32
ROUT:CLOS (@101)
INIT
DATA?
continuous triggering
—
' Continuous measurement mode (INIT:CONT ON).
' Select ACV function.
' Request last measured reading.
one-shot triggering
—
' One-shot measurement mode (INIT:CONT OFF).
' Select Ω4 function.
' Select 1kΩ range.
' Enable offset-compensated ohms.
' Trigger and return one reading.
temperature measurement using Model 7700
—
' One-shot measurement mode (INIT:CONT OFF).
' Select TEMP function.
' Select °F TEMP units.
' Select thermocouple transducer.
' Select type J thermocouple.
' Select simulated reference junction.
' Set reference temperature to 32°F (ice point).
' Close channel 101.
' Trigger one measurement.
' Return measured reading.
Model 2750 Multimeter/Switch System User's Manual