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APPENDIX:
USER CALIBRATION
Calibration Instruments:
Calibration Procedures:
Granite Table
Grade AA (Levelled to ≤1.0 arcsec)
Ensure the DWL3500XY device is in power OFF
condition. Press and hold the CAL button by using a small
pin and simultaneously press the ON/OFF button. The
LCD screen displays “Calibration 1”.
2. Turn the device 180
°
to
Position 2
. Press the MODE
button again to start the calibration at “Position 2” and
wait until the countdown reach “0”, the LCD screen
displays “Calibration 3”.
Position 1
Position 2
Position 1
Granite Table
1. Place the device to
Position 1
. Press the MODE button
once and wait until the countdown reach “0”, the LCD
screen displays “Calibration 2”.