8.4
Beam Catching (Grade Matching)
Using the Beam Catching feature you can match an existing grade. The Zone60 DG moves to the
new grade position, displays the grade found and begins self-levelling to maintain the grade over
time. Maximum range is 100 m (300’).
α
014301_002
1
2
X
α
4
XSC
SMT
1.5 s
3
1.
The Beam Catching process can only be run on the X-axis in horizontal mode.
2.
Set up the Zone60 DG at the base of a slope with no grade dialled into the
Zone60 DG and with the X-axis pointing in the direction of the slope.
3.
Adjust the height of the receiver on the rod at the base of the slope until the on-
grade (centreline) position is indicated on the receiver by:
•
the centre bar,
•
the green flashing LED,
•
a solid audio tone,
•
the digital display.
4.
Move the rod with the receiver to the top of the slope. To start the Beam Catching
process, press the Beam Catch button for 1.5 seconds.
•
The Zone60 DG searches for the receiver until the on-grade position is found.
The receiver shows SMT, then XSC while catching the beam on the X-axis.
•
Once the on-grade position is found, the receiver flashes all three LEDs simul-
taneously one time and the receiver returns to normal operation.
5.
After this signal, the receiver can be moved and used as normal. The grade for the
sloped axis is displayed on the LCD display and the Zone60 DG now self-levels to
this new slope.
8.5
Beam Lock (Grade Matching and Monitoring)
Using the Beam Lock feature, you can match an existing grade and monitor the laser beam. The
Zone60 DG moves to the new grade position, displays the grade found and begins self-levelling
to maintain the grade over time. The ZRD105B must remain in place to monitor any movements
of the rotating beam. Thus, an accurate grade setup is maintained. Maximum range is 100 m
(300’).
5 s
3
α
4
XSL
LOC
SML
2
014302_002
1
X
α
Beam Catching using the
ZRD105B
step-by-step
Beam Lock using the
ZRD105B
step-by-step
Applications
49
