CST/BERGER AL Serie Manual De Instrucciones página 28

Special Features– Laser Detector
The laser detectors have a unique memory feature, which preserves the last position of the laser beam if
the detector is moved out of the plane of laser light (for a brief moment (~5-6sec.)), as well as built in
electronic filtering for bright sunlight and electromagnetic interference. Three distinct audio tones (high,
on-grade, and low) assist targeting from a distance.
Strobe Shield ™ Protection
The Strobe Shield ™ Protection feature is useful in jobsites where there is moving construction
equipment with flashing strobe lights. This feature effectively prevents interference of the strobe light
with accurate detection of the laser beam. Proper function of feature requires the protection sensor (Fig.
20 #11) to be revealed at all times.
The detector LD-440 has three speaker selections (Off, Loud (105dBA) and Louder (125+ dBA)).
Audio Volume Control
Pressing the volume button (Fig. 20 #6) causes the unit to cycle through volume off, soft volume, loud
volume. After each press, the speaker will beep once to acknowledge the button press then beep again
to demonstrate the volume level. When the volume is off, there will be one short beep. When the
volume is soft, there will be a short beep followed by a longer beep. When the volume is loud, there will
be a short beep followed by a loud longer beep. The audio frequency can be selected between four
distinct tones. To change tones, hold the volume button (Fig. 20 #6 and press the power button (Fig. 20
#4). The unit will switch to the next tone and then beep to acknowledge frequency and volume setting
as above.
The LCD display of the detector LD-440 has seven distinct channels of information, indicating the position
of the detector in the plane of laser light.
As you move the detector closer to the center, the arrows fill in to indicate the laser position (Fig. 22).
On Grade LED indicators
The On-Grade LED display is useful when detecting the position of the laser from a distance (emulates
the LCD) or in low light conditions. The lower LED indicates that the detector is TOO LOW and must be
moved up. The upper LED indicates that the detector is TOO HIGH and must be moved down. The
center ON-GRADE LED indicates that the detector is level with the laser.
To increase battery life, the LED display can be disabled. To do so, hold the bandwidth button (Fig. 20 #5)
and press the power button (Fig. 20 #4). All three LEDs will flutter and if the LEDs remain on for one
second the LEDs are enabled, otherwise they are disabled.The On-Grade LED display is useful as
another means to visually see the position of the detector essentially emulating the LCD with a display
more visible from a distance or in low light conditions. The lower LED indicates that the detector is too
low and must be moved up. The upper LED indicates that the detector is too high and must be moved
down. The center LED indicates that the detector is level with the laser. To increase battery life, the LED
display can be disabled. To disable, hold the bandwidth button (Fig. 20 #5) and press the power button
(Fig. 20 #4). All three LEDs will flutter and if the LEDs remain on for one second the LEDs are enabled,
otherwise they are disabled.
NOTE: The loudest frequency is the highest frequency
28 • AL-SERIES