Keithley 6514 User Manual

Calibration 19-15
10. Press ENTER. Model 6514 will prompt for the negative full-scale charge value:
-20.0000nC
11. Set the calibrator output voltage to -20.00000V. Calculate the actual charge from the cal-
ibrator voltage and actual standard capacitor value: Q = CV. Adjust Model 6514 display
to agree with the calculated charge value, then press ENTER to complete calibration of
the present range.
12. Press EXIT to return to normal display.
13. Repeat steps 4 through 12 for the 200nC through 20µC ranges using Table 19-6 as a
guide.
Table 19-6
Coulombs calibration summary
Model 6514 range Calibrator voltage Standard capacitance
1
Calibration charge
2
20nC +20.00000V 1nF +20nC
-20.00000V 1nF -20nC
200nC +200.0000V 1nF +200nC
-200.0000V 1nF -200nC
2µC +20.00000V 100nF +2µC
-20.00000V 100nF -2µC
20µC +200.0000V 100nF +20µC
-200.0000V 100nF -20µC
1
Nominal value.
2
Based on nominal capacitance values. Calculate actual charge from calibrator voltage and actual standard
capacitance value: Q = CV. Calibrate positive full-scale, and negative full-scale values for each range.

Keithley 6514 Specifications

General

Brand	Keithley
Model	6514
Category	Measuring Instruments
Language	English