DeWalt DW078 Guide D'utilisation page 15

(R), and the volume icon (S). To decrease
the volume of the audible signal that the
detector emits when it senses a laser
beam, push the button again; one of the
half circles next to the horn icon will
dissappear. To turn off the audible signal
push the button a third time; the volume
icon will dissapear. The D WALT Digital
E
Laser Detector also has an auto shut-off
feature. If a rotary laser beam does not
strike the beam detection window, or if no
buttons are pressed, the detector will shut
itself off in about 30 minutes.
When the detector is on, the bottom of
the window shows an accuracy mode icon. Either the ±1/25" (1
mm) accuracy mode icon (Q1) will appear, or the ±1/8" (3 mm)
accuracy mode icon (Q2) will appear. When the ±1/25" (1 mm)
accuracy mode icon appears, it indicates that the detector will
give an "on grade" reading only when the laser beam is on grade
or no more than 1/25" (1 mm) above or below it. When the 1/8"
(3 mm) accuracy mode icon appears, it indicates that the detector
will give an "on grade" reading when the laser beam is on grade or
approximately 1/8" (3 mm) above or below it. Push the accuracy
mode button (Q) once to change the accuracy mode.
Detector Operation (Fig. 10)
1. Set up and position the rotary laser that you will be using
according to the manufacturer's directions. Turn the laser on
and make sure that the laser is rotating and emitting a laser
beam.
NOTE: This detector has been designed to be used only with a
rotating laser. The detector will not work with a stationary beam
laser level.
FIG. 9 2. Turn the detector on by pressing the power/volume button (P).
3. Adjust the volume as desired as described in the Detector
Controls.
4. Position the detector so that the detector window (T) is facing
the laser beam produced by the rotary laser. Move the detector
S
R
up or down within the approximate area of the beam, until you
have centered the detector. For information about the display
window indicators and the audible signal indicators, refer to
the table titled Indicators (Fig. 10).
5. Use the marking notches (U) to accurately mark the position of
the laser beam.
Q1
Q2
FIG. 10
MOUNTING ON A GRADE ROD (FIG. 11)
1. To secure your detector to a grade rod, first attach the detector
to the clamp by pushing in on the clamp latch (V). Slide the
tracks (W) on the clamp around the rail (X) on the detector until
13
INDICATORS
Slightly
Above Above On
Grade Grade Grade
fast fast steady
beep beep tone
Slightly
Below Below
Grade Grade
slow slow
beep beep