Spectra Precision HV302 Mode D'emploi page 23

Automatic PlaneLok
The PlaneLok mode can be activated in horizontal automatic and vertical automatic
and manual mode. In PlaneLok mode when set up horizontal, the beam will
be locked to a fixed elevation point (up to 100 m (330 ft) located on the
Y-axis of the laser. For keeping vertical alignments fixed to the
direction position, PlaneLok can be used on the X-axis.
1. Set up the laser over the reference point.
2. Attach the HL760/HL760U receiver to a grade rod. Check the laser's elevation next to
the laser then position the receiver at the second point WITHOUT changing the
receiver's elevation on the rod.
3. Press and release the M button at the Standard Display and select >>PlaneLok<<.
4. Press and release the E button to open the PlaneLok submenu; select the Y-axis
when set up horizontally or the X-axis when set up vertically; then press the E button to start PlaneLok.
Note: The laser starts to search for the receiver while the RC402N display shows flashing PL.
The HL760/HL760U display shows a flashing –PL– during the time the laser is searching and
adjusting the beam to the on-grade position.
When PlaneLok is complete, –PL– stops flashing at the HL760/HL760U and RC402N display.
When setting up the transmitter vertical, PlaneLok can be used at the X-axis.
1. Press and release the M button at the Standard Display and select >>PlaneLok<<.
2. Press and release button E to open the PlaneLok submenu; select the X-axis;
then press button E to start PlaneLok.
Note: When used in vertical mode, the receiver has to be placed with the
photocell on the bottom side. For getting the best performance and a longer
operating range set up the HL760/HL760U at least 0.5 m (2 ft) above the ground.
23