17-54 SCPI Command Reference Models 2500 and 2502 User’s Manual
SENSe subsystem
The SENSe subsystem is used to configure and control the measurement functions of the
Model 2500. SENSe[1] controls channel 1 measurement functions, and :SENSe2 controls
channel 2 functions. Some of the commands are global, where a single command affects
both channels. Other commands are unique to a specific channel. For example, you can
program a unique range setting for each channel. A channel does not have to be selected
before you can program its various configurations. Whenever a programmed channel is
selected, it assumes the programmed states.
The commands for this subsystem are summarized in Table 17-5.
Select measurement range
[:UPPer] <n>
[:SENSe[1]]:CURRent[:DC]:RANGe[:UPPer] <n>|UP|DOWN Select range for channel 1
:SENSe2:CURRent[:DC]:RANGe[:UPPer] <n>|UP|DOWN Select range for channel 2
Parameters <n> = -21e-3 to 21e-3 Expected reading in amps
DEFault 2e-4
MINimum -21e-3
MAXimum 21e-3
UP Select next higher measurement range
DOWN Select next lower measurement range
Query :RANGe? Query measurement range
:RANGe? DEFault Query *RST default range
:RANGe? MINimum Query lowest range (returns 0)
:RANGe? MAXimum Query highest range
Description These commands are used to manually select the measurement range for
channel 1 and channel 2. The range is selected by specifying the
expected reading. The instrument will then go to the most sensitive
reading that will accommodate that reading. For example, if you expect
a reading of approximately 5mA, then simply let <n> = 0.005 (or 5e-3)
in order to select the 20mA range.
You can also use the UP and DOWN parameters to select range. Each
time UP or DOWN is sent, the next higher or lower measurement range
is selected. When on the maximum range, sending UP is a NO-Op (no
operation). When on the lowest range, sending DOWN is a NO-Op.
Measurement ranges can instead be automatically selected by the instru-
ment. See “AUTO <b>,” page 17-55.
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