Meter Commands; Offset Commands - Keithley 6517 Service Manual

3.4

Meter commands

Meter commands include those necessary to null offsets and calibrate the volts, amps, and coulombs measurement functions.

3.4.1 Offset commands

Purpose
Format
Parameter
Description
Programming Note
Example
Purpose
Format
Parameter
Description
Programming Note
Example
:VOFF
(:CALibration:UNPRotected:VOFFset)
To null voltage offsets.
:cal:unpr:voff
None
The :VOFF command performs voltage offset calibration and is normally used as part of the cal-
ibration procedure. :VOFF can also be sent during normal operation to null voltage offsets at
any time.
1. :VOFF is not protected by the CAL switch.
2. When :VOFF is used as part of the normal calibration procedure, voltage offset compensa-
tion constants are permanently saved. When :VOFF is sent during normal operation (with
calibration locked), voltage offset compensation is only temporary.
:CAL:PROT:VOFF Perform voltage offset calibration
:IOFF
(:CALibration:UNPRotected:IOFFset)
To null bias current.
:cal:unpr:ioff
None
The :IOFF command performs bias current calibration and is normally used as part of the cali-
bration procedure. :IOFF can also be sent during normal operation to null bias current at any
time.
1. :IOFF is not protected by the CAL switch.
2. When :IOFF is used as part of the normal calibration procedure, bias current compensation
constants are permanently saved. When :IOFF is sent during normal operation (with calibra-
tion locked), bias current compensation is only temporary.
:CAL:PROT:IOFF
Calibration Command Reference
Perform bias current calibration
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