Major tech MT940 Manuel d'instruction - Page 6

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5. MEASUREMENT INSTRUCTIONS

5.1 Press POWER button to turn on the meter.

5.2 Choose suitable range and displaying unit.

5.3 Open the sensor cover, and horizontally place the sensor under the

light source.

5.4 Read the measurement result on the LCD.

5.5 If "1" displaying on the top digit, it means overload, a higher range

should be selected.

5.6 Press HOLD button, " H " symbol appears, and the current value will

be held. Press HOLD again to exist HOLD mode. Press PEAK button,

" P-H "symbol appears, the light impulse signal can be measured and

its peak value will be held. Press PEAK button again to exist PEAK

mode.

5.7 If the measurement is completed, cover the light sensor and press

POWER button to turn off the meter.

6. BATTERY REPLACEMENT

6.1 When the LCD shows "

battery.

6.2 Turn off the meter and take off the holster. Loosen the screw on the

battery door and slide the cover away from the instrument.

6.3 Replace the old battery with a new 9V battery and reinstall the cover

and holster.

6.4 If the meter is not used for a period of time, please remove the

battery from the meter.

7. SPECTRAL SENSITIVITY CHARACTERISTIC:

" symbol, is necessary to replace the