Keithley 6517B

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Model 6517B Electrometer Reference Manual Section 15: Calibration procedure

6517B-901-01 Rev. C / August 2015 15-3

20 pA to 200 pA range voltage offset

To calibrate the voltage offset for each range:

1. Set the DMM range to 1 V DC, with an integration rate of 10 NPLC with a repeating filter count of

10. Connect a 10 G resistor between the Model 6517B input HI and input LO.

:CAL:PROT:VOFF:STEP 1

:CAL:PROT:VOFFSETZ2.

2. Allow the input to settle for 120 seconds, then take the DMM voltage reading.

:CAL:PROT:VOFFZERO <dmm voltage reading>

3. Connect a 1 G resistor between the Model 6517B input HI and input LO.

:CAL:PROT:VOFF1

4. Allow the input to settle for 10 seconds, then take the DMM voltage reading.

:CAL:PROT:VOFF2 <dmm voltage reading>

:CAL:PROT:VOFF3

5. Allow the input to settle for 10 seconds, then take the DMM voltage reading.

:CAL:PROT:VOFF4 <dmm voltage reading>

2 nA to 200 nA range voltage offset

To calibrate the voltage offset for each range:

1. Connect a 10 M resistor between the Model 6517B input HI and input LO. Set the DMM range

to 1 VDC.

:CAL:PROT:VOFF:STEP 2

:CAL:PROT:VOFFSETZ

2. Allow the input to settle for 10 seconds, then take the DMM voltage reading.