Spectra Precison GL1425C - Grade Value from +;- 9% to +;- 15%; Laser Pre-tilt is Needed; Rotation Speed

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Pic 12 Grade change Step & Go mode
10.2 Grade value from +/- 9% to +/- 15%; Laser pre-tilt is needed
WHY: The grade range from 0% up to +/- 9% is achieved with a regular setup of the
tripod. When a grade range more than 9% is required, there is some limitation of the
free movement of the rotor head. A grade range up to +/- 15% can be achieved with a
pre-tilt of the laser.
WHAT: When a grade range has been entered that the laser cannot level to, there will
be an alarm (beep) and the display will show an arrow next to the grade value, (see pic
13). This arrow indicates the direction in which the product has to be adjusted. This is
achieved by lowering or lifting a tripod leg or with a tilting base (p/n M401).
HOW: Enter the grade value (see chapter 10.1) that is more than 9%. Wait for the
product to level. When the pre-tilt is not enough the laser display will show the axis
direction where the laser needs to be raised. Mount either a tilting base to the tripod
that allows to tilt the laser up in the Y+ direction or lift the tripod leg that is orientat-
ed in the Y+ direction or lower the tripod leg that is orientated in the Y- direction. It is
recommended to have only one tripod leg oriented in the directions that is required to
lift or to lower.
Pic 13 Pre-Tilt indication
11 Rotation Speed
WHY: Dierent applications or use cases may require dierent rotation speeds. Slow
rotation speed increases visibility and high rotation speeds may enhance receiver
performance.
WHAT: The GL1425C provides 3 rotation speeds: 300, 600 and 900 RPM.
HOW: Press ‘M’ button to enter the menu. Using the Up or Down buttons (f), scroll to
and select >> Rotation<<. When selected, press ‘E’ button to enter the rotation menu.
Using the Up or Down buttons (f), choose the rotation speed 300, 600 or 900 RPM.
When selected, press ‘E’ button to conrm and start the rotation speed.
>>Rotation<< → >>300 RPM<<
>>600 RPM<<
>>900 RPM<<
12 Mask Mode
WHY: In some applications or jobsites, the laser beam may cause issues in some
directions. Maybe the laser could disturb workers or the laser may hit reective
surfaces like windows or glossy metal surfaces. These surfaces may create laser