Beam Axis And Line Of Sight; The Edm Beam Axis - Pentax W-800 Series Basic Instruction Manual

4.8 Beam axis and line of sight

Be sure to check that the beam axis and line of sight are aligned when the adjustments on
reticle and perpendicularity of line of sight to horizontal axis are made.
[Checks]
Set the prism at a distance greater than 50 m.
Accurately sight the center of the prism through the telescope.
Turn the power on and press [MEAS] to measure.
No adjustment is necessary if beam receiving buzzer sounds immediately and
measurement value is displayed in a few seconds.
[Adjustments]
• If instrument function is not as described in
• This check should be done under good weather conditions.

4.9 The EDM beam axis

The distance measurement (EDM) beam axis is adjusted to be aligned to the sighting axis of the
telescope, but it can be changed a little in case of rapid temperature change, shock or aging.
Check your instrument by following procedures.
[Checks]
Install the instrument on the tripod and level it at the distance of approx.50 m from the wall.
Displace the target plate attached to the end of this manual. Place the target plate
adjusting its center to the center of telescope cross line and to be about horizontal to the
instrument.
Turn the power on and set target type to 'Reflector sheet' .
When starting measurement, the laser spot is will appears on the target.
The adjustment is not necessary if the center of the laser spot stays within 10 mm
from the center of the target.
[Adjustments]
At the procedure 4. above, if the "Center" of laser spot is not within the internal circle (10mm) of
the target plate, the adjustment is necessary. Please contact your PENTAX dealer.
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, contact your local dealer.