Keithley 6517B Reference Manual

Section 15: Calibration procedure Model 6517B Electrometer Reference Manual
15-10 6517B-901-01 Rev. C / August 2015
Coulombs ranges calibration
To calibrate each coulomb range:
1. Determine the calibration charge to be used during calibration. For the 2 nC to 2 mC coulomb
ranges, use the following table to calculate the appropriate calibration charge. Calculate the
actual charge using the formula
Q = C V
where
 Q = Actual charge in coulombs
 C = Measured value of the precision capacitor
 V = Calibrator voltage
Coulomb range calibration values
Model 6517B
coulombs range Calibrator voltage
Standard
capacitance Nominal charge
2 nC 2.0 V 1 nF 2 nC
20 nC 20.0 V 1 nF 20 nC
200 nC 2.0 V 100 nF 200 nC
2 mC 20.0 V 100 nF 2 mC
2. Connect the capacitor stated in the Standard capacitor column in the above table.
3. Set the calibrator voltage output to 0.0 V.
4. Calculate the actual charge (see Step 1) and send the command in the Coulomb full scale
calibration command column in the below table.
5. Set the calibrator voltage to the value in the Coulomb full scale calibration command column in
the below table.
Coulomb range calibration commands
Model 6517B
coulombs
range
Calibrator
voltage
Coulomb zero calibration
command
Coulomb full scale calibration
command
-2 mC -20.0 V
:CAL:PROT:CZEROB2U :CAL:PROT:CN2U <value>
2 mC 20.0 V
:CAL:PROT:CZEROA2U :CAL:PROT:C2U <value>
-200 nC -2.0 V
:CAL:PROT:CZEROB200N :CAL:PROT:CN200N <value>
200 nC 2.0 V
:CAL:PROT:CZEROA200N :CAL:PROT:C200N <value>
-20 nC -20.0 V
:CAL:PROT:CZEROB20N :CAL:PROT:CN20N <value>
20 nC 20.0V
:CAL:PROT:CZEROA20N :CAL:PROT:C20N <value>
-2 nC -2.0 V
:CAL:PROT:CZEROB2N :CAL:PROT:CN2N <value>

Keithley 6517B Specifications

General

Brand	Keithley
Model	6517B
Category	Measuring Instruments
Language	English