9-2 SCPI Signal-Oriented Measurement Commands Models 2510 and 2510-AT User’s Manual
Command summary
The signal-oriented measurement commands are used to acquire readings such as thermo-
electric cooler DC current, power, and resistance. You can use these high-level instructions
to trigger and acquire readings directly without having to send any other commands.
Signal-oriented commands are summarized in Table 9-1.
NOTE The :FORMat:ELEMents command determines the reading elements returned
by MEAS?, READ?, and FETCH?. (See “FORMat subsystem,” page 10-19.)
Acquiring readings
FETCh?
Description This query command requests the latest post-processed readings stored
in the sample buffer. After sending this command and addressing the
Model 2510 to talk, the readings are sent to the computer. This com-
mand does not affect the instrument setup.
This command does not trigger control-measure operations; it simply
requests the last available readings. Note that this command can repeat-
edly return the same readings. Until there are new readings, this com-
mand continues to return the old readings. The readings that are
acquired depend on which data elements are selected (see “FORMat
Table 9-1
Signal-oriented measurement command summary
Command Description
:MEASure
:CURRent
[DC]? Query DC current measurement of thermoelectric cooler.
:POWer? Query power measurement of thermoelectric cooler.
:RESistance
[:DC]? Query DC ohms measurement of thermoelectric cooler.
:AC? Query AC ohms measurement of thermoelectric cooler.
:TEMPerature? Query temperature measurement.
:TSENSor? Query temperature sensor (very useful in SOUR:FUNC RES mode).
:VOLTage
[:DC]? Query DC voltage measurement of thermoelectric cooler.
:MEASure? Performs an :INITiate and a :FETCh?
:READ? Identical to :MEASure?.
:FETCh? Requests latest readings from unit.
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