Reference <N - Keithley 2002 User Manual

3.18.9
Parameters
Query
Description
Program fragment
:REFerence <n>
[:SENSe[1]]:CURRent:AC:REFerence <n>
[:SENSe[1]]:CURRent:DC:REFerence <n>
[:SENSe[1]]:VOLTage:AC:REFerence <n>
[:SENSe[1]]:VOLTage:DC:REFerence <n>
[:SENSe[1]]:RESistance:REFerence <n>
[:SENSe[1]]:FRESistance:REFerence <n>
[:SENSe[1]]:FREQuency:REFerence <n>
[:SENSe[1]]:TEMPerature:REFerence <n>
<n> = -2.1 to +2.1
-1100 to +1100
0 to 1.05e9
0 to 2.1e6
0 to 1.5e7
-328 to +3310
-200 to +1821
73 to 2094
DEFault
MINimum
MAXimum
:REFerence?
:REFerence? DEFault
:REFerence? MINimum
:REFerence? MAXimum
These commands are used to establish a reference value for the specified function. When Ref-
erence is enabled (see :REFerence:STATe), the result will be the algebraic difference between
the input signal and the reference value:
Reading = Input signal - Reference
From the front panel, reference is called relative (REL). See paragraph 2.6 for more information
on REL.
The :REFerence <n> command is coupled to the :ACQuire command. The last command sent
(:REFerence <n> or :ACQuire) establishes the reference. When a reference is set using the
:REFerence <n> command, the :REFerence? query command returns the programmed value.
Conversely, when a reference is set using the :ACQuire command, the :REFerence? query com-
mand returns the acquired reference value.
PRINT #1, "output 16; :curr:ac:ref 1; ref?"
PRINT #1, "enter 16"
Specify reference for ACI
Specify reference for DCI
Specify reference for ACV
Specify reference for DCV
Specify reference for
Specify reference for
Specify reference for FREQ
Specify reference for TEMP
Reference for ACI and DCI
Reference for DCV and ACV
Reference for 2
Reference for 4
Reference for FREQ
Reference for TEMP (°F)
Reference for TEMP (°C)
Reference for TEMP (K)
0 (All functions)
Minimum value for specified function
Maximum value for specified function
Query programmed reference value
Query *RST default reference value
Query lowest allowable reference value
Query largest allowable reference value
IEEE-488 Reference
2
4
' Set reference to 1A
' Get response from 2002
3-99