19
value.
Pic 18 GradeMatch submenu
Pic 19 GradeMatch laser display
Pic 20 GradeMatch set up
16 PlaneLok
WHY: On some jobsites, there is the need to lock the laser onto a xed position. This
helps with high accuracy requirements or to overcome job site circumstances like
vibrations, moving objects (high buildings), or temperature drift.
WHAT: A radio in the laser and the receiver communicate with each other and keep the
laser beam locked to a xed horizontal elevation or vertical direction. Using PlaneLok,
the GL1425C connects a rst elevation reference point, where the laser is positioned,
with a second elevation reference point where the laser receiver is positioned with the
correct grade. The PlaneLok mode will automatically guide the laser beam of the Y-axis
to the on-grade position of the HL760/CR700 receiver. As a result of the PlaneLok, the
laser is sloped in the Y-axis while the X-axis will remain in the automatic self-leveling
mode. The HL760/CR700 receiver continuously shows the on-grade position of the
laser. It is necessary to leave the receiver at the xed position and to use another
receiver to do the measurements. It is not recommended to switch the laser into
manual mode and to remove the receiver.
HOW: The PlaneLok mode can be activated either in horizontal automatic mode or in
vertical automatic and manual mode.
In horizontal mode, PlaneLok is only available on the Y axis.
In vertical mode, PlaneLok is available in the Y or X axes. When used in vertical mode,
the receiver has to be placed with the photocell on the bottom.
When used in Y-axis vertical mode, the top of the laser and top of the receiver should
be oriented the same.
1.) Set up the laser over the rst reference point.
2.)
Attach the HL760/CR700 receiver to a grade rod. Place the rod next to the laser and
adjust the height of the receiver next to the laser until the laser receiver is on-grade.
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