Keithley 6220 Reference Manual page 391

Model 6220/6221 Reference Manual
3.
4.
a.
b.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com
Repeat step 2 for each range, as listed in
the following:
• Be sure to set the correct range using the RANG command.
• Each range is calibrated with three values, +FS (positive full scale), 0,
and -FS (negative full scale) in that order. Use the SOUR:CURR com-
mand as shown to set the output current value for each step.
• For the 2nA and 20nA ranges, use the picoammeter with connections
shown in Figure 17-2. Substitute the picoammeter reading for the DMM
reading in the command listings. Be sure to turn the output off (send
OUTP OFF) before changing connections, then turn the output back on
(OUTP ON) before completing calibration.
For the Model 6221 only:
Disconnect the DMM from the Model 6221 OUTPUT jack.
Send this command to calibrate the waveform generator:
CAL:PROT:WAVE:STEP1
Return to
Table 17-4, page
' Calibrate waveform generator
Section 17 topics
Calibration 17-15
17-16, noting