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10-9 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
q Set the prism at a distance greater than 50 m.
w Accurately sight the center of the prism through the telescope.
e Turn the power on and press (MEAS) to measure.
r 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 r, contact your local dealer.
● This check should be done under good weather conditions.
10-10 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
q Install the instrument on the tripod and level it at the distance of approx. 50 m
from the wall.
w 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.
e Turn the power on, and confirm the [TARGET] is set to the Reflecting sheet
mode (“S” will be indicated at the top of display, left side of the battery
remains sign when it is that.) When it is not, press [F2] [TARGET] and set to
Reflecting sheet mode (Reference p38 6.1 Target Setting).
r Press [F1] [MEAS], then the laser spot appears on the target plate. If the
“Center” of the laser spot is within the internal circle (10mm) of the target
plate at this moment, the adjustment is unnecessary.
● The laser spot disappears in approx. 20 seconds after pressing [F1][MEAS].
Press [MEAS] again, if it is necessary.
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10 CHECKS AND ADJUSTMENTS
PENTAX R-300 (p65-88) 10/30/02 11:11 AM Page 74