Keithley 2000, Calibration Manual

Page: 26 / 88

Calibration considerations
When performing the calibration procedures:
• Make sure that the equipment is properly warmed up and connected to the appropriate
input jacks. Also make sure that the correct input jacks are selected with the INPUTS
switch.
• Make sure the calibrator is in operate before you complete each calibration step.
• Always let the source signal settle before calibrating each point.
• Do not connect test equipment to the Model 2000 through a scanner or other switching
equipment.
• If an error occurs during calibration, the Model 2000 will generate an appropriate error
message. See Section 3 and Appendix B for more information.
WARNING The maximum common-mode voltage (voltage between INPUT LO and chas-
sis ground) is 500 V peak. Exceeding this value may cause a breakdown in
insulation, creating a shock hazard. Some of the procedures in this section
may expose you to dangerous voltages. Use standard safety precautions
when such dangerous voltages are encountered to avoid personal injury
caused by electric shock.
2-4 Calibration