Testing The Display; Display Hold Test; Backlight Test; Spotlight Led Test - Fluke 771 Calibration Manual

Testing the Display

1. Press and hold Awhile powering on the Meter.
2. Compare the Meter display to Figure 3.
3. Check all display segments for clarity and contrast.

Display Hold Test

1. Power on the Meter and allow time for the normal operating display to appear.
2. Press H and observe that I appears on the display. I flashes at 3 to 4

Backlight Test

1. Power on the Meter and allow time for the normal operating display to come up.
2. Press C and observe that the backlight comes on.

Spotlight LED Test

1. Power on the Meter and allow time for the normal operating display to come up.
2. Press L and observe that the spotlight LED comes on.

Zero Test

1. Power on the Meter and allow time for the normal operating display to come up.
2. Press A. The main display momentarily reads 0.00, and the percentage scale

Accuracy Tests

Accuracy specifications are valid for 1 year after calibration when measured at an
operation temperature of 18 °C to 28 °C. Allow the Meter to stabilize at room
temperature prior to performing the accuracy tests.
Table 3 lists the required performance test points for verifying Meter accuracy. A zero
adjustment must be performed prior to completing each performance test point.
info@Fluke-Direct.ca
Figure 3. Display Test
second intervals.
momentarily reads -25.0%.
Fluke-Direct
Milliamp Process Clamp Meter
Performance Tests
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