Metrix MX 230B Notice De Fonctionnement page 29

MX 230B
3.3.6 Calibration 3.3.6 Calibration
3.3.6 Calibration 3.3.6 Calibration 3.3.6 Calibration
Nota : Nota Nota undo 4 screws (2 inside the fuses + cells compartment
Nota Nota
at the back of the instrument to get access to internal circuits.
Check if the pointer is at zero.
0.3 V DC range : 5 0 µA DC at input (accuracy > 0.15 % at FSD). Adjust R5
0.3 V DC range 0.3 V DC range
0.3 V DC range 0.3 V DC range
to make the pointer deflect to FSD.
3 V AC range : 5 0 µA AC at input (accuracy > 0.25 % at FSD). Adjust R6 to
3 V AC range 3 V AC range
3 V AC range 3 V AC range
make the pointer deflect to FSD.
3 mA AC range 3 mA AC range : 3 mA AC 50 Hz at input (accuracy > 0.25 % at FSD). Adjust 3 mA AC range
3 mA AC range 3 mA AC range
R7 to make the pointer deflect to FSD.
3.4 ACCESSORIES OPERATION 3.4 ACCESSORIES OPERATION
3.4 ACCESSORIES OPERATION 3.4 ACCESSORIES OPERATION 3.4 ACCESSORIES OPERATION
3.4.1 100 - 300 mV Shunts 3.4.1 100 - 300 mV Shunts
3.4.1 100 - 300 mV Shunts 3.4.1 100 - 300 mV Shunts 3.4.1 100 - 300 mV Shunts
Multimeter on
0.3 V DC or
100 mV DC range
300 mV Shunts 300 mV Shunts
300 mV Shunts 300 mV Shunts 300 mV Shunts
15 A
30 A
100 mV Shunts 100 mV Shunts 100 mV Shunts 100 mV Shunts 100 mV Shunts
50 A
150 A
Read on scale Read on scale
Read on scale Read on scale Read on scale
30 black
30 black
Read on scale Read on scale Read on scale Read on scale Read on scale
1000 black
30 black
Unit/factor Unit/factor
Unit/factor Unit/factor Unit/factor
A : 2
A x 1
Unit/factor Unit/factor Unit/factor Unit/factor Unit/factor
A : 2
A x 5
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