Keithley 6517B Reference Manual

Model 6517B Electrometer Reference Manual Section 15: Calibration procedure
6517B-901-01 Rev. C / August 2015 15-5
Voltage ranges voltage offset
To calibrate the voltage offset for each range:
1. Connect the DMM to the Model 6517B preamp output.
2. Set the DMM range to 1 V DC.
3. Connect the Model 6517B input HI to input LO (short the input).
4. Send:
:CAL:PROT:VOFF:STEP 5
:CAL:PROT:VOFF1
5. Allow the input to settle for 10 seconds, then take the DMM voltage reading.
:CAL:PROT:VOFF2 <dmm voltage reading>
:CAL:PROT:VOFF3
6. Allow the input to settle for 10 seconds, then take the DMM voltage reading.
:CAL:PROT:VOFF4 <dmm voltage reading>
Coulombs ranges voltage offset
To calibrate the voltage offset for each range:
1. Connect the DMM to the Model 6517B preamp output. Set the DMM range to 1 V DC. Place the
triaxial cap on the Model 6517B input.
:CAL:PROT:VOFF:STEP 6
:CAL:PROT:VOFF1
2. Allow the input to settle for 10 seconds, then take the DMM voltage reading.
:CAL:PROT:VOFF2 <dmm voltage reading>
:CAL:PROT:VOFF3
3. Allow the input to settle for 10 seconds, then take the DMM voltage reading.
:CAL:PROT:VOFF4 <dmm voltage reading>
Current offset calibration
The following three commands are automated and require extra time to complete:
 :CAL:PROT:IOFF:STEP 3 takes approximately two minutes
 :CAL:PROT:IOFF:STEP 4 takes approximately five minutes
 :CAL:PROT:IOFF:STEP 5 takes approximately two minutes

Keithley 6517B Specifications

General

Input Impedance	>200 TΩ
Electrometer Type	Electrometer/High Resistance Meter
Current Measurement Range	20 fA to 20 mA
Display	Vacuum Fluorescent Display
Communication Interfaces	IEEE-488 (GPIB), RS-232
Power Supply	100 V / 120 V / 220 V / 240 V; 50 Hz / 60 Hz
Resistance Measurement Range	Up to 200 TΩ