Bosch LR 60 Professional Mode D'emploi page 16

16 | English
To change the reception accuracy, press the button for ad-
justing the reception accuracy (18) as many times as
needed for the required setting to be shown in the display.
With each press of the button for adjusting the reception ac-
curacy, the respective value for the reception accuracy ap-
pears in the text display (e) for a short time.
The setting for reception accuracy is saved when the tool is
switched off.
Laser Beam Indicator Audio Signal
The position of the laser beam on the reception area (1) can
also be indicated by an audio signal.
The volume level can be changed or the audio signal
switched off.
To change the volume level or switch off the audio signal,
push the audio signal button (20) until the required volume
level is indicated on the display. At a low volume, the audio
signal indicator (g) appears on the display with one bar; at a
high volume, the indicator appears with three bars. When
the audio signal is switched off, the indicator goes out.
Independent of the audio signal setting, a short beep sounds
at low volume level when the laser beam first makes contact
with the reception area (1).
The setting for the audio signal is saved when the laser re-
ceiver is switched off.
Settings menu
To call up the settings menu: Briefly press the X-axis but-
ton (16) and the Y-axis button (15) on the laser receiver at
the same time.
To change the setting within a submenu: Press the X-axis
button (16) or the Y-axis button (15) to switch between the
settings. The last selected setting is automatically saved
when exiting the menu.
To change the submenu: Briefly press the centre line mode
button (17) to move to the next submenu.
To exit the settings menu: Press and hold the centre line
mode button (17) until the settings menu closes. Alternat-
ively, the settings menu is automatically closed approxim-
ately ten seconds after the last press of a button.
The following submenus are available:
– Measurement unit of the relative height indicator:
When calling up the measuring unit menus, the currently
selected measuring unit is shown in the text display (e),
while the available measuring units are shown in the
measuring unit indicator (d) above it.
– LED direction indicators (LED): The three LED direction
indicators (2), (4) and (3) can be adjusted with regard to
their brightness or switched off. The LEDs light up in their
selected setting.
– Display lighting (LIT): The display lighting can be
switched on (green LED lights up) or switched off (red
LED lights up).
– Memory function for last reception (MEM): The indic-
ator for the direction in which the laser beam has left the
reception area can be switched on (green LED lights up)
or switched off (red LED lights up).
1 609 92A 596 | (25.10.2019)
With the exception of the setting for the display lighting, all
settings are saved when the laser receiver is switched off.
Functions
Centre line mode (only with GRL 600 CHV) (see figure C)
In centre line mode, the rotary laser automatically attempts
to align the laser beam to the centre line of the laser receiver
by moving the rotation head up and down.
If the rotary laser is in the horizontal position, the laser
beam can be aligned in relation to the X-axis of the rotary
laser, to the Y-axis or to both axes at the same time (see "In-
clination determination with centre line mode (see fig-
ure D)", page 16). If the rotary laser is in the vertical posi-
tion, only alignment to the Y-axis is possible.
Position the rotary laser and laser receiver so that the laser
receiver is situated in the direction of the X-axis or the Y-axis
of the rotary laser. If the laser beam is aligned to both axes,
then place a laser receiver connected to the rotary laser in
the direction of the X- and Y-axis respectively. Each laser re-
ceiver must be situated within the pivoting range of ±8.5%
of the rotary laser.
Switch on the rotary laser in rotary operation.
To start centre line mode for the X‑axis, press the button for
centre line mode (17); to start this for the Y-axis, press the
button for centre line mode (17) together with the Y-axis
button (15). Should the laser beam be aligned to both axes
at the same time, centre line mode must be started separ-
ately on each laser receiver.
Following the start of centre line mode, the rotary head on
the rotary laser moves up and down. During the search pro-
cess, CFX (X‑axis) or CFY (Y‑axis) appears in the text dis-
play (e).
If the laser beam hits the reception area (1) at the height of
the centre line of the laser receiver, the text display (e)
shows XOK (X‑axis) or YOK (Y‑axis) along with the centre
line indicator (h). The value of the incline that is found is dis-
played on the rotary laser. Centre line mode then ends auto-
matically.
To cancel the centre line mode, press and hold the centre
line mode button (17).
If the laser beam was unable to find the centre line of the
laser receiver within the pivoting range, ERR appears in the
text display (e) and all LED direction indicators light up.
Press any button on the rotary laser or laser receiver to can-
cel centre line mode. Reposition the rotary laser and laser re-
ceiver so that the laser receiver is situated within the pivot-
ing range of ±8.5% of the rotary laser. Ensure that the laser
receiver is aligned to the X-axis or Y-axis so that the laser
beam can pass through the reception area (1) horizontally.
Then restart the function.
Inclination determination with centre line mode
(see figure D)
Using centre line mode, the inclination of a surface can be
measured up to max. 8.5%. To do this, set up the rotary
laser at the base of the inclination in a horizontal position on
a tripod. The X- or Y-axis of the rotary laser must be aligned
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