Fluke 377 - DC Current (Jaw); AC Current (Jaw)

377/377 FC/378/378 FC
Calibration Manual
4
DC Current (Jaw)
To verify dc current measurement with the jaw:
1. Connect the normal output HI and LO of the calibrator to the HI and LO input of the
5500A/COIL.
2. Place the DUT inside the center of the 50-turn coil. Calibration accuracy to
specifications is guaranteed only when proper clamp alignment is made. The DUT
should be centered as much as possible on the base during verification.
3. Set the DUT to Y (DC current measurement mode).
4. Set the calibrator to the current:
a. Verify that the DUT reads within the display limits shown.
b. Verify the DUT reading for the remaining steps for dc current.
AC Current (Jaw)
To verify ac current measurement with the jaw:
1. Connect the normal output HI and LO of the calibrator to the HI and LO input of the
5500A/COIL.
2. Place the DUT inside the center of the 50-turn coil. Calibration accuracy to
specifications is guaranteed only when proper alignment is made. The DUT should be
centered as much as possible on the base during verification.
3. Set the DUT to s (AC current measurement mode).
4. Set the calibrator to the current and frequency:
a. Verify that the DUT reads within the display limits.
b. Verify the DUT reading for the remaining steps for ac current.