Fluke 716 - DC Current Source Verification; Keypad Test; DC Current Measure Verification

71X Series
Calibration Manual
38
DC Current Source Verification
1. Disconnect the Fluke 8508A. Press the A key on the 715 Calibrator. The display
should change to:
OUTPUT 0.000 mA
2. Connect test leads from the 715 Calibrator's mA output jacks (black to V jack and red
to +LOOP jack) to the Fluke 8508A input mA jacks (black to I- and red to I+).
3. Set the Fluke 8508A function to [
DC CURRENT]. Using the large [ scroll button of
the 715 Calibrator, press to step to the current outputs in
Table 55, verifying the readings on the Fluke 8508A.
Table 55. 715 DC Current Source Verification
Fluke 715 Fluke 8508A
4.000 mA 3.9972 mA to 4.0028 mA
12.000 mA 11.9956 mA to 12.0044 mA
24.000 mA 23.9932 mA to 24.0068 mA
Keypad Test
1. Using the large { scroll key, press to step down to 12.000 mA.
2. Using the small ] scroll key, press to verify that the numbers scrolling on the
display change in .001 increments; then change in .01 increments; then change in 0.1
increments.
3. Using the small } scroll key, press to verify that the numbers scrolling on the
display change in .001 decrements; then change in .01 decrements; then change in 0.1
decrements.
4. Scroll to 12.000 mA.
5. Press the A key on the 715 Calibrator. Display should change to:
OUTPUT 50.00 mA %
DC Current Measure Verification
1. Press I key on the 715 Calibrator. Display should indicate closely to:
INPUT -25.00 mA %
2. Press the A key and the display should change to:
INPUT 0.000 mA
3. Connect a test lead from Red AUX terminal of the 5520A to the Fluke 8508A I+
terminal.
4. Connect a test lead from Black AUX terminal of the 5520A to the 715 Calibrator
Com terminal.
5. Connect a test lead from I- terminal of the Fluke 8508A to the 715 Calibrator mA
terminal.
6. Adjust the 5520A if necessary so that the current shown on the Fluke 8508A is the
same as the 5520A values shown in Table 56.
7. Verify that the display readings on the 715 Calibrator are within the limits.