Introduction; Verification Test Requirements - Keithley 2425 Service Manual

1-2 Performance Verification

Introduction

Use the procedures in this section to verify that Model 2425 accuracy is within the limits
stated in the instrument's one-year accuracy specifications. You can perform these verifi-
cation procedures:
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WARNING
NOTE

Verification test requirements

Be sure that you perform the verification tests:
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When you first receive the instrument to make sure that it was not damaged during
shipment.
To verify that the unit meets factory specifications.
To determine if calibration is required.
Following calibration to make sure it was performed properly.
The information in this section is intended for qualified service per-
sonnel only. Do not attempt these procedures unless you are qualified
to do so. Some of these procedures may expose you to hazardous volt-
ages, which could cause personal injury or death if contacted. Use
standard safety precautions when working with hazardous voltages.
If the instrument is still under warranty and its performance is outside specified
limits, contact your Keithley representative or the factory to determine the cor-
rect course of action.
Under the proper environmental conditions.
After the specified warm-up period.
Using the correct line voltage.
Using the proper test equipment.
Using the specified output signals and reading limits.
Model 2425 Service Manual