Chroma 19572 - Complete Calibration

Ground Bond Tester 19572 User’s Manual
8-2
Press [INC.] or [DEC.] until 19572 LCD STANDARD display 29.87 A
Press [ENTER] ; Save calibration value into the memory
Press [STOP] ; Stop GBA full scale calibration.
Take off Current Shunt, connect the test cable of main system to 100mΩ STANDARD.
Connect AC voltage meter to 19572 Sense + and Sense – terminals.
Press [UP] key to display ; Grounding voltage offset.
Display GBVX1 8V OFFSET(0.3V) ; 3.0Amp into 100mΩ
0.300V
Press [STOP] [START] ; Read out the ACV meter value
; Example 0.302 volts
Press [INC.] or [DEC.] until 19572 LCD STANDARD display 0.302V
Press [ENTER] ; Save calibration value into the memory.
Press [STOP] ; Stop GBV offset calibration.
Press [UP] key to display ; Grounding voltage full scale.
Display GBVX1 8V FULL (3V) ; 30Amp into 100mΩ.
3.000V
Press [STOP] [START] ; Read out the ACV meter value
; Example 3.021 volts
Press [INC.] or [DEC.] until 19572 LCD STANDARD display 3.021 V
Press [ENTER] ; Save calibration value into the memory.
Press [STOP] ; Stop GBV full scale calibration.
Press [UP] to display ; Grounding voltage offset
Display GBVX10 8V OFFSET(0.03V) ; 0.3Amp into 100mΩ
0.030V
Press [STOP] [START] ; Read out the ACV meter value
; Example 0.031 volts
Press [INC.] or [DEC.] until 19572 LCD STANDARD display 0.031V.
Press [ENTER] ; Save calibration value into the memory.
Press [STOP] ; Stop GBV full scale calibration.
Press [UP] to display ; Grounding voltage full scale.
Display GBVX10 8V FULL (0.3V) ; 3Amp into 100mΩ.
0.300V
Press [STOP] [START] ; Read out the ACV meter value
; Example 0.302 volts
Press [INC.] or [DEC.] until 19572 STANDARD display 0.302 V
Press [ENTER] ; Save calibration value into the memory.
Press [STOP] ; Stop GBV full scale calibration.
Press [UP] key to display ; Contrast adjust value
Press [SETUP] key to display contrast value 6
Press [INC.] or [DEC.] until LCD brightness is applicable.
Press [ENTER] [EXIT] key to quit calibration process
8.3 Complete Calibration
Press (CAL) switch off on front panel to avoid data loss.
Press [DOWN] [DOWN] [DOWN] [SELECT]
Display PASSWORD:
Press [A] [A] [A] [A] [ENTER]