Keithley 6220 Reference Manual page 385

Model 6220/6221 Reference Manual
Figure 17-2
Connections for current source calibration (2nA and 20nA ranges)
6220/6221
Output
Step 3: Calibrate compliance
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Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com
High
Low
Connect the digital multimeter (DMM) to the Model 6220/6221 as shown in
Figure 17-3 and select the DMM DC volts function with auto range enabled.
From the main calibration menu, select EXECUTE, and press ENTER. The
unit will display:
CALIBRATION
SOURCE COMPLIANCE GUARD WAVE
Select COMPLIANCE, then press ENTER. The unit will display:
20V COMPLIANCE CAL
Press ENTER to Output +2.0000mA
Press ENTER to output +2mA for 20V compliance calibration. The instru-
ment will prompt as follows:
DMM RDG=+020.0000V
Use , , , , ENTER, or EXIT
Note the DMM reading, then adjust the Model 6220/6221 display to agree
with that value.
Press ENTER. The display will prompt:
.1V COMPLIANCE CAL
Press ENTER to Output +2.0000mA
Press ENTER to output +2mA for 0.1V compliance calibration. The instru-
ment will prompt as follows:
DMM RDG=+0.100000V
Use , , , , ENTER, or EXIT
Note the DMM reading, then adjust the Model 6220/6221 display to agree
with that value.
Return to
Picoammeter
(Measure DC Current)
High
Input
Low
(WAVE displayed only for 6221)
Section 17 topics
Calibration 17-9