Chroma 19071 User Manual page 59

Calibration Procedure
potential terminal of HiPot tester to the low potential terminal of DC ammeter inputting.
(1) Press [UP] or [DOWN] to select DCA 3mA range offset calibration.
(2) Press [STOP][START] to read the ammeter value, ex. 0.124mA.
(3) Press [INC.] or [DEC.] until shows 0.124mA and then press [ENTER] for saving.
(4) Press [STOP] to stop DCA 3.0mA range offset calibration.
(5) Press [UP] to change to the next calibration item.
(6) Change the dummy load resistor to 500kΩ 10watt or higher.
(7) Press [STOP][START] to read the ammeter value, ex. 2.450mA.
(8) Press [INC.] or [DEC.] until shows 2.450mA and then press [ENTER] for saving.
(9) Press [STOP] to stop DCA 3.0mA range full scale calibration.
(10) Press [UP] to change to the next calibration item.
(11) Press [STOP][START] to read the ammeter value, ex. 2.45mA.
(12) Press [INC.] or [DEC.] until shows 2.45mA and then press [ENTER] for saving.
(13) Press [STOP] to stop DCA 5.0mA range offset calibration.
(14) Press [UP] to change to the next calibration item.
(15) Change the dummy load resistor to 250kΩ 20watt or higher.
4-7