Keithley 6482 - Page 292

6482-901-01 Rev. A / August 2012 Return to Section Topics 17-37
Model 6482 Dual-Channel Picoammeter / Voltage Source Reference Manual Section 17: Calibration
8. Send the following command to calibrate the negative full-range current point:
:CAL:PROT:SENS1 -1.9e-9
9. Repeat steps 3 through 8 for the 20 nA to 2 μA ranges using Table 17-14 as a guide. Be sure
to:
• Select the appropriate range using the :SENS1:CURR:RANG <Range> command.
• Send the appropriate calibration current values with the :CAL:PROT:SENS1 <Current>
command.
10. Connect the Model 5700A to the Model 6482 channel 1 INPUT connector, as shown in
Figure 17-10.
11. Select the Model 5700A V/R amperes function and set the output current to 1.90000 μA, and
then turn on the Model 5700A output.
12. Send the following command to select the channel 1, 20 μA range:
:SENS1:CURR:RANG 2e-5
13. Send the following command to calibrate the positive full-range current point:
:CAL:PROT:SENS1 1.9e-5
14. Set the Model 5700A current output to 0 μA.
15. Send the following command to calibrate the zero current point:
:CAL:PROT:SENS1 0
16. Set the Model 5700A current to -19.0000 μA.
17. Send the following command to calibrate the negative full-range current point:
:CAL:PROT:SENS1 -1.9e-5
18. Repeat steps 11 through 17 for the 200 μA to 20 mA ranges using Table 17-14 as a guide. Be
sure to:
• Select the appropriate range using the :SENS1:CURR:RANG <Range> command.
• Send the appropriate calibration current values with the :CAL:PROT:SENS1 <Current>
command.
Step 7. Channel 2 current calibration adjustment
Follow these steps to calibrate channel 2 current measurements. Table 17-14 summarizes channel
calibration currents and commands.
1. Connect the Model 6430 to the Model 6482 INPUT channel 2 connector, as shown in
Figure 17-11.
2. Select the Model 6430 V/R amperes function and set the output current to 1.90000 nA, and
then turn on the Model 6430 output.
3. Send the following command to select the channel 2, 2 nA range:
:SENS2:CURR:RANG 2e-9
4. Send the following command to calibrate the positive full-range current point:
:CAL:PROT:SENS2 1.9e-9
5. Set the Model 6430 current output to 0 nA.
6. Send the following command to calibrate the zero current point:
:CAL:PROT:SENS2 0
7. Set the Model 6430 current to -1.90000 nA.
8. Send the following command to calibrate the negative full-range current point:
:CAL:PROT:SENS2 -1.9e-9