(a)
(b)
20 display steps indicate the divergence from the centre of
the laser line. The central bar indicates the “in line” posi-
tion of the REC 300 Digital. The arrow increases in size as
the distance from the “in line” position increases.
Rapid beeping note
= too high / back
Continuous tone
= “in line”
Slow beeping note
= too low / forward
Getting started
Press the ON/OFF button (1). An audio signal and a short flash from the display will
confirm, that the instrument is switched on. The instrument will now calibrate itself.
Audio signals
Height difference display: analogue
Setting the volume
The volume is increased/decreased by repeatedly pressing the button (2):
Loud (a), soft (b) or off.
If the instrument is set to “silent” only a short beep is emitted
when the laser beam is received.
2
1.
Automatic
calibration
ON/OFF button
2.
Press the ON/OFF button (1) quickly once (2sec) to switch the instrument off.
If the instrument is not used, it will automatically switch itself off after 30 minutes.
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