Calibration Considerations; Calibration Cycle; Calibration Menu; Table 2-1 Calibrating Menu - Keithley 2182 Service Manual

Calibration considerations

When performing the calibration procedures:
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WARNING
CAUTION

Calibration cycle

Perform calibration every two years to ensure the unit meets or exceeds its specifications.

Calibration menu

The calibration menu allows you to access the calibration items summarized in
access the calibration menu, press SHIFT then CAL. Use the RANGE and left and right arrow
keys to scroll through selections. Use the ENTER key to choose menu items, and use the EXIT
key to cancel them.
Table 2-1
Calibrating menu
Calibration menu item
CAL: DATES
CAL: COUNT
CAL: RUN
CAL: TEMP
Make sure that the test equipment is properly warmed up and connected to the
appropriate Model 2182 jack.
Always allow the source signal to settle before calibrating each point.
Use only copper-to-copper connections to minimize thermal EMFs.
Make sure that all connections are clean and free of oxidation to avoid thermal EMFs
that could affect calibration accuracy. Clean oxidation from connector terminals with
DeoxIT cleaning solution.
Keep test connections and all equipment away from drafts to avoid thermal drift.
Do not connect test equipment to the Model 2182 through a scanner or other switching
equipment.
If an error occurs during calibration, the Model 2182 will generate an appropriate error
message. See Appendix B for more information.
The maximum voltage between terminals to chassis ground is 350V peak.
Exceeding this value may cause a breakdown in insulation, creating a shock
hazard.
The maximum voltage between CHANNEL 1 HI and LO is 120V. The
maximum voltage between CHANNEL 2 HI and LO is 12V. Exceeding
these voltage values may result in instrument damage.
Description
Display calibration and calibration due dates.
Display number of times unit was calibrated.
Run calibration procedure.
Display internal calibration temperature.
Calibration 2-3
Table 2-1. To