Grade Match Mode (Gl422 Only) - Spectra GL422 Mode D'emploi

Standard Method
Press and hold the up or down button for the Y (/)-axis and the left or right button for the X (y)-axis until the
correct grade value appears in the laser's and remote control's LCD.
Note: The speed of the grade value change increases with the amount of time the button is held
down.
Note: Grade values from 0 to +/-9.999% are displayed to 3 decimal places.
Grade values greater than 10% are displayed to 2 decimal places.
To reverse the sign of the Y (/)- or X (y)- grade, press and release the manual button quickly while in grade
change mode.
The laser will self-level to the required grade position 2 seconds after releasing the grade change arrow
button or after pressing an arrow button of the unused axis; a single beep confirms the grade change mode
has been left.
Note: The grade values at the laser's and remote control's LCD will flash until the laser has been
self-leveled to the requested grade position.
Quick-Change Method
Note: The grade value can be quickly set to 0.000% by simultaneously pressing and holding the
arrow buttons for the axis you want to change
1. Simultaneously press and hold the up and down buttons for the Y-axis or the left and right buttons for the
X-axis to set the grade value to 0.000%.
2. Continuing to press and hold the up and down / left and right buttons will change grade in 1% increments.
Note: The grade value for both axes increases in 1.00% increments. When the grade value for
either axis reaches its highest amount, the grade value switches to the lowest value for that axis.
For example, the value switches from +15% to -10%.
The laser will self-level to the required grade position, 2 seconds after releasing the grade change arrow button or
after pressing an arrow button of the unused axis; a single beep confirms the unit left the grade entry mode.
Note: The grade values at the laser's and remote control's LCD will flash until the laser has been
self-leveled to the requested grade position.

Grade Match Mode (GL422 only)

In Grade Match mode, the laser can be used to measure the existing grade value between two known elevation
points on the Y ( ) - axis.
Press and release the manual button at the transmitter or remote control twice.
Note: The manual and leveling LED will flash simultaneously.
A "G" appears in the LCD's right bottom corner and after 3 seconds both grade values are set to
0%.
If the manual button is pressed again before the 3 seconds are up, the unit goes back to the
previously used grade value.
Grade Match activated
Change the beam slope by using the up and down arrow buttons at the transmitter or remote control until
the receiver shows an on-grade.
Note: During grade match, the Y- axis grade value changes by 2 decimal place resolution. To resume auto-
matic self-leveling mode, press and release the manual button again. The LCD will show the measured final
grade value on the Y( ) – axis to 3 decimal places.
Note: After grade match has been completed, the X-axis can then be changed to any required grade value.
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Grade indication during Grade Match
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