Fluke 301A - Accuracy Specifications; AC Voltage and Frequency Accuracy; DC Voltage Accuracy; Resistance and Continuity Accuracy

301A/301B/301C/301D/301E
Calibration Manual
12
Figure 4. Volts and Ohms Performance Test Connections
Calibration Adjustment
The Product features closed-case calibration adjustment and uses known reference sources.
The Product measures the applied reference source, calculates correction factors, and stores
the correction factors in nonvolatile memory.
Should the Product fail any of the performance tests, do the calibration adjustment procedure.
For information about damage by electrostatic discharge, see Static Awareness.
To do the calibration adjustment:
1. Remove the Product battery door. See Battery Replacement.
2. Apply 3.0 V across the battery contacts on the PCA. Note the polarity in Figure 5.
3. Turn the rotary switch to the function to OFF.
4. Remove the calibration seal.
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