Gc Calibration - QuadTech Guardian 5000 Instruction Manual

4.3.7 GC Calibration

Connect a 4 terminal load resistor (0.1 ohms) between the HIGH/LOW DRIVER and
HIGH/LOW SENSE of the Guardian 5000. Connect the 30 A AC ammeter in series with the
HIGH DRIVER terminal.
Press
Display
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Display
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Display
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Display
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Change the load resistor to 50 mΩ and connect the AC voltmeter between HIGH and LOW
SENSE.
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Display
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Display
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Change the load resistor to 100 mΩ
Press
Display
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Display
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[UP] or [DOWN] key as necessary to display
CL 3.0 OFST
[OFF] key to display
1 3.0A 200.0 0.0 sec
[STOP] [START]
[2] [.] [8] [7] [ENTER]
[STOP]
[DOWN] key to display
CL 25.0 FULL GrA
[OFF] key to display
1 25.0A 200.0 0.0 sec
[STOP] [START]
[2] [4] [.] [8] [7] [ENTER]
[STOP]
[DOWN] key to display
CL 5.0 OFST
[OFF] key to display
1 5.0A 200.0 0.0 sec
[STOP] [START]
[0] [.] [2] [5] [7] [ENTER]
[STOP]
[DOWN] key to display
CL 30.0 FULL GrV ; 30A into 100mohm
[OFF] key to display
1 30.0A 200.0 0.0 sec
[STOP] [START]
[2] [.] [8] [4] [7] [ENTER]
[STOP]
GrA
; read out the ammeter value
; example 2.87A
; stop GrA offset calibration
; read out the ammeter value
; example 24.87A
; stop GrA full scale calibration
GrV ; 5.0A into 50mohm
; read out the voltmeter value
; example 0.257 volts
; stop GrA offset calibration
; read out the voltmeter value
; example 2.847 volts
; stop GrA full scale calibration
Maintenance & Calibration 4-7