SCPI Command Reference
87
:REFerence <n>
Command syntax:
[:SENSe[1]]:CURRent:AC:REFerence <n> Specify reference for ACI
[:SENSe[1]]:CURRent:DC:REFerence <n> Specify reference for DCI
[:SENSe[1]]:VOLTage:AC:REFerence <n> Specify reference for ACV
[:SENSe[1]]:VOLTage:DC:REFerence <n> Specify reference for DCV
[:SENSe[1]]:RESistance:REFerence <n> Specify reference for Ω2
[:SENSe[1]]:FRESistance:REFerence <n> Specify reference for Ω4
[:SENSe[1]]:FREQuency:REFerence <n> Specify reference for FREQ
[:SENSe[1]]:PERiod:REFerence <n> Specify reference for PER
Command parameter:
<n> = -12 to 12 Reference for ACI and DCI
-757.5 to 757.5 Reference for ACV
-1010 to 1010 Reference for DCV
0 to 120e6 Reference for Ω2 or Ω4
0 to 1.5e7 Reference for FREQ
0 to 1 Reference for PER
Query:
:REFerence? Query reference for relative function
Return String:
Returns reference value in exponent form. For example, 1010 = 1.010000e+003
Description:
These commands are used to establish a reference value for the specified function. When reference
is enabled (:REFerence:STATe), the result will be the difference between the input signal and the
reference value:
Reading = Input signal – Reference
From the front panel, reference is called relative (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 :ACQuiry command, the :REFerence? Query
command returns the acquired reference value.
:STATe <b>
Command syntax:
[:SENSe[1]]:CURRent:AC:REFerence:STATe <b> Control reference for ACI
[:SENSe[1]]:CURRent[:DC]:REFerence:STATe <b> Control reference for DCI
[:SENSe[1]]:VOLTage:AC:REFerence:STATe <b> Control reference for ACV
[:SENSe[1]]:VOLTage[:DC]:REFerence:STATe <b> Control reference for DCV
[:SENSe[1]]:RESistance:REFerence:STATe <b> Control reference for Ω2
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