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7-4 Recommended procedures when BG check obtains no good result
Reading on the eye. BG check may result in good without using the
alignment mark (Fig. 4).
Important point is to align the device so that no iris image or reflected glare comes into
Measurement window (see ■ 6-4 Diagonal view alignment).
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7-3 Recommended procedures when BG check obtains no correct alignment
When Excessive light detector does not stop the alarm in BG check
screen, press “Frontal view switch” to go back to Frontal view alignment
screen or select “Stop” on Fig. 2.
Selecting “Stop” terminates the ongoing laser scanning and stops BG check. Realign
while monitoring the laser beam position. In order to perform BG check again, press
“Measurement switch” (Fig. 3).
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7-2 Warning beep during BG check
When intensive laser beam comes into Measuring window as shown
in Fig. 2, Excessive light detector automatically emits a series of high-
pitch short repeated alarm.
When you hear this alarm, move Main unit and Measurement unit away to keep exces-
sive laser beam from entering into Measuring window.
Caution: Excessive laser beam may cause a photoreceiver element failure.
7. Tips for measurements
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7-1 How to block laser beams
Turning Calibrator until it comes to the position shown in Fig. 1 makes a
click-sound and blocks laser beams.
Use this method to block laser beams immediately and securely. The following mes-
sage appears.
ListStop
ListStop
Fig. 1
Fig. 2
Fig. 3
Fig. 4
When you start measuring, turn Calibrator
counter-clockwise until it comes to MEASURE-
MENT.
When you start calibrating, turn Calibrator
clockwise until it comes to CALIBRATION.
Laser Attenuating …
If Measure / Calibrate
Set the position of Cali. Tool as fol-
lows.
Measure = Measurement
Calibrate = Calibration