Topcon RL-VH3A - Calibrating Vertical Beam; Adjusting Vertical Calibration (RL-VH3 A;B;G)

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(3) Adjusting Calibration for RL-VH3A/B/G
Turn the unit off by pressing the [START]
pad once. Confirm that unit has shut off
before beginning the following procedure. (In
step 2 and 3, use of optional RC-30 remote
control can be helpful. See page 66 .)
1 Without moving the unit, press the [ENTER] and [START] keys simultaneously.
2 Press either the right or left key on the Alignment Control pad to move the laser beam up
or down on wall B until the measurement for the distance dHb is the same as the mea-
surement dHa on wall A.
3 When the beam is positioned so the two measurements are the same, press the [ENTER]
key. The [V] LED will flash.
about 20 m
(66ft)
about 20 m
(66ft)
Wall
A
Wall
B
Laser beam
up or down