Pentax W-821NX, Основное руководство пользователя, Страница: 6 / 48

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[Reflectorless and reflector sheet]
Reflectorless measurement precautions:
• The measurement range and accuracy of Reflectorless are based on the condition that laser
beam is emitted perpendicular to the white side of the Kodak Gray Card. There is a possibi-
lity that the range may vary when the target does not satisfy the conditions above at sur-
vey work. The measurement range may be influenced by the shape of the target and its
environment.
• There is a possibility that the instrument may not be able to correctly calculate out the dis-
tance when receiving reflected laser beam from forth and back directions in case of measu-
ring the target on the road.
• There is a possibility that measured distance may be longer or shorter than the actual one
when measuring a target of slope or sphere or rugged shape as the distance is calculated
out from synthesized values.
• There is a possibility that the instrument may not be able to correctly calculate out the dis-
tance when receiving reflected laser beam from a man or a car that comes and goes in front
of the target.
• There is a possibility that the distance may not be correctly measured when measuring a
target in the direction where there is a reflecting object (mirror, stainless board and white
wall, etc.) or under too strong sun light.
• In a situation high accuracy may not be expected, perform the measurement by reflector
sheet or prism.
• The measurement range at TRACK mode is over 5m.
• It may take longer time than usual when measuring the distance exceeding 300m or the
distance to an object that is hard to measure.
Reflector sheet measurement precautions:
• There is a possibility that correct distance measurement may not be performed by disper-
sion or reduction of laser beam when the laser beam comes into the target from diagonal
angle.
• When using reflector sheet, set the reflector sheet to have its surface be perpendicular to
the aiming line. If it is positioned not to be perpendicular, there is a possibility that correct
distance measurement may not be performed by dispersion or reduction of laser beam.
[Battery & charger]
• Do not use any batteries and battery chargers other than those PENTAX assured adequate.
• If water should happen to splash on the instrument or the battery,wipe it off immediately and
allow it to dry in a dry location. Do not put the instrument in the case until it is completely dry
as this may result in damage to the instrument.
• Turn off the power when removing the battery from the instrument as removing the battery
while the power is still on may result in damage to the instrument.
• The battery mark displayed on the instrument is only an estimate of remaining battery
power and is not completely accurate. Replace the battery quickly when it is about to run
out as the time a battery lasts on one full charge differs depending on conditions of
ambient temperature, and the measurement mode of the instrument.
• Confirm the battery level remaining before operating.