Current Offset Calibration Commands - Keithley 6517B Reference Manual

Section 15: Calibration procedure

Current offset calibration commands

Set the current offset calibration step by sending the following command:
:CAL:PROT:IOFF:STEP <step number>
This sets the step of the current offset calibration procedure. Steps are numbered from 1 to 5, and
correspond to the following instrument ranges:
1. All current ranges except 20 pA and 200 pA
2. 20 pA and 200 pA current ranges
3. 2 nC and 20 nC charge ranges
4. 200 nC and 2 mC charge ranges
5. 2 V, 20 V, and 200 V voltage ranges
For current offset calibration steps 1 and 2 only, the commands in the following table must be
executed after setting the current offset calibration step.
Current offset calibration commands for steps 1 and 2
Command
:CAL:PROT:IOFF1
:CAL:PROT:IOFF2 <preamp out voltage
reading>
:CAL:PROT:IOFF3
:CAL:PROT:IOFF4 <preamp out voltage
reading>
15-18
Model 6517B Electrometer Reference Manual
Description
Start the first measurement for the current offset
calibration
Calibrate the first current offset point
Start the second measurement for the current offset
calibration
Calibrate the second current offset point
6517B-901-01 Rev. C / August 2015