Process Calibrators
Verification
41
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 61, verifying the readings on the Fluke 8508A.
Table 61. 715 DC Current Source Verification
Fluke 715 Fluke 8508A
4.000 mA 3.9976 mA to 4.0024 mA
12.000 mA 11.9968 mA to 12.0032 mA
24.000 mA 23.9956 mA to 24.0044 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 62.
7. Verify that the display readings on the 715 Calibrator are within the limits.
Table 62. 715 DC Current Measure Verification
Fluke 5520A Fluke 715
24.0000 mA 23.993 mA to 24.007 mA
12.0000 mA 11.996 mA to 12.004 mA
4.0000 mA 3.998 mA to 4.002 mA
DC Voltage Measure Verification
1. Press the V key on the 715 Calibrator. Display should change to:
INPUT 0.000 V
2. Connect test leads from the output NORMAL jacks of the Fluke 5520A to the voltage
jacks on the 715 Calibrator (black to COM jack and red to the V jack).
3. Set the Fluke 5520A for the voltage settings in Table 63, and verify the display
readings on the 715 Calibrator.
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