PRESIDIUM Duo Tester PDT II Mode D'emploi page 13

Depress the probe pen against the "CAL" disc and ensure
that the probe tip is fully depressed and retracted into the
housing of the probe pen. Please ensure that your fingers
are touching the metallic chrome area of the probe pen.
The needle indicator will calibrate to the red "CAL" strip
automatically. The buzzer will beep twice upon completion
of "CAL" Calibration.
The Reflectivity Display will then show a blinking "2".
Depress the probe pen against the "Glass" disc and
follow the steps above on probe pen handling. The needle
indicator will calibrate to the red "Glass" strip
automatically. The buzzer will beep twice upon completion
of "Glass"Calibration and this ends the calibration
procedure.
Calibration Notes:
• It is advisable to power the unit via the AC adaptor
during the calibration process.
• As a precaution, it is important to allow the "CAL" and
"Glass" discs to cool down before subsequent tests.
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