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Performance Tests
The following performance tests verify the complete operability of the meter and check the accuracy
of each meter function against the meter’s specifications.
Accuracy specifications are valid for a period of one year after calibration, when measured at an
operating temperature of 18°C to 28°C and a maximum of 80% relative humidity.
To perform the following tests, it is not necessary to open the case. No adjustments are necessary,
merely make the required connections, apply the designated inputs, and determine if the reading on
the meter display falls within the acceptable range indicated.
If the meter fails any of these tests, it needs calibration adjustment or repair.
Testing the Display
Press “HOLD” key while turning the meter on from the “OFF” position to hold the display in the
Display Test Mode. Compare the display with the example in Figure 3. Turn off the meter to escape
the test mode.
LCD Graphics 61-324
Figure 3 Display Test
Form Number TM61320-2-4
Rev 4 February 2008
