Calibration Procedure
press [STOP] ; stop RACA 30.00mA range Offset
calibration
Change the dummy load resistor to 50kΩ 200watt or higher.
press [UP]
display RACA 30mA full 2.50mA (25mA) ; RACA 30mA range full scale.
press [STOP] [START] ; read our the ammeter value
; example 24.50mA
press [UP] or [DOWN] key until display 24.50mA
press [STOP] ; stop RACA 30mA range full scale
; calibration
8.3.3 DC Current Calibration
Connect a dummy load resistor 10MΩ between HI-POT testers. Connect HI terminal of
HI-POT tester to input HI terminal of DC ammeter, connect LO terminal of HI-POT tester to
input LO terminal of DC ammeter.
press [UP] key
display DCA 3mA offset (0.12mA) ; DCA 2.999mA range Offset
calibration
press [STOP] [START] ; read out the ammeter value
; example 0.124mA
press [UP] or [DOWN] key until display 0.124mA
press [ENTER] for saving calibration value.
press [STOP] ; stop DCA 2.999mA range Offset
calibration
Change the dummy load resistor to 500kΩ 50watt or higher.
press [UP] key
display DCA 3mA Full (2.5mA) ; DCA 2.999mA range full scale
calibration.
press [STOP] [START] ; read out the ammeter value
; example 2.503mA
press [UP] or [DOWN] key until display 2.503mA
press [ENTER] for saving calibration value.
press [STOP] ; stop DCA 2.999mA range full scale
calibration.
press [UP] key
display DCA 10mA offset (2.5mA) ; DCA 10.00mA range Offset
calibration.
press [STOP] [START] ; read out the ammeter value
; example 2.503mA
press [UP] or [DOWN] key until display 2.503mA
press [ENTER] for saving calibration value.
press [STOP] ; stop DCA 10.00mA range Offset
calibration.
Change the dummy load resistor to150kΩ 100watt or higher.
press [UP] key to display
display DCA 10mA full (8mA) ; DCA 10.00mA range full scale
calibration.
8-5
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