Ma Output Calibraton - Fluke 71 Series Calibration Manual

71X Series
Calibration Manual
6. In mA Measurement calibration mode, the 719 should display:
7. Connect the test leads from the AUX jacks of the Fluke 5520A to the mA jacks on
8. Set the Fluke 5520A to 0.00000 mA.
9. When 0.0 mA is sourced from the 5520A the upper display indicates approximately
10. Set the Fluke 5520A to 12.0000 mA. The upper display reads approximately 12.000
11. Press C on the 719 Calibrator.
12. When 12.000 mA is sourced from the 5520A, the upper display indicates
13. Set the Fluke 5520A to 24.0000 mA.
14. Press C on the 719 Calibrator.
15. The CHEC mode allows for a quick check of the calibration constants that have just
16. Press C to continue. The upper and lower display changes to - - - - -. The Source,

mA Output Calibraton

1.
2.
3.
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mA on the upper display and
CAL 0 mA on the lower display.
the 719 Calibrator (black to black and red to red).
0.000 mA. When C is pressed, the unit establishes the calibration constant for that
point and the lower display changes to CAL 12 mA. The upper display still reflects
the applied current so it does not change until after 12 mA is applied.
mA.
approximately 24.000 mA. When C is pressed, the unit establishes the calibration
constant for that point and the lower display changes to CAL 24 mA. The upper
display still reflects the applied current so it does not change until after 24 mA is
applied.
The upper display reads approximately 24.000 mA.
CHEC appears on the lower display.
been stored. Changes to the applied current are reflected in the display.
mA, Ref appear on the LCD, and the unit will proceed enters the mA output
calibration section.
Connect a test lead across the Fluke 719 mA jacks, connecting red to black.
Press C to start the mA source calibration.
The unit will start its auto-calibration process for the mA output using an internal
mA measurement circuit calibrated at previous stage. It will generate 17 different
output values, measure each of them, and save the measured values as calibration
points.
•
The upper display indicates measured output current in mA for the point which
is being calibrated.
•
The lower display indicates expected output current in mA for the point which
is being calibrated.
• During this process the unit checks if the measured values fit in ± 15 % range
of expected values. If all 17 values are within range, the upper display indicates
DONE.
•
If any of this values were out of the range, the upper display indicates ErrOr ,
and the lower display shows the amount of errors.