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Calibration Manual
14
Calibration Adjustment
The Meter features closed-case calibration adjustment with a known reference
source. The Meter measures the applied reference source, calculates correction
factors, and keeps the correction factors in nonvolatile memory.
Before you start calibration adjustment, let the Meter stabilize to room
temperature.
To turn on Calibration mode:
1. Remove the batteries and substitute with a lab supply set to 6 V dc.
2. Open the battery door. The calibration button is usually hidden by the factory
calibration seal.
3. Use a small probe and push the calibration button longer than 2 seconds.
See Figure 4.
Calibration Button
gep01.emf
Figure 4. Accessing the Calibration Button
There are five Meter functions to adjust:
1. Clamp measure
2. mA measure
3. Volt measure (773 only)
4. mA source
5. Volt source (773 only)
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