Sokkia CX Series Operator's Manual page 16

2. PRECAUTIONS
Vertical and horizontal clamps
• Always fully release the vertical/horizontal clamps when rotating the instrument
or telescope. Rotating with clamp(s) partially applied may adversely affect
accuracy.
Backing up data
• Data should be backed up (transfered to an external device etc.) on a regular
basis to prevent data loss.
Use under low temperatures (Low Temperature Model only)
• Do not use force to scrape off frost from the lens or display unit screen. Frost is
an abrasive material and may scratch the instrument.
• If ice or snow attaches itself to the unit, wipe it off with a soft cloth, or place the
unit in a warm room until the ice melts, and then wipe off the meltwater.
Operating the unit with ice or snow attached may cause operation errors to
occur.
• Wipe off condensation with a soft cloth before using the instrument. Not doing
so may cause operation errors to occur.
• The working duration of battery BDC70 will rapidly decline in cold temperatures.
When using the instrument in temperatures around -30°C, we recommend that
you use external battery BDC60 or BDC61 (optional accessories) and
dedicated cables EDC119. However, if you unavoidably must use battery
BDC70 for measurements in temperatures around -30°C, recharge the battery
in a warm room and keep the battery in a warm place such as your pocket until
it is used. (Working duration of battery will change with environmental
conditions.)
• The lens cap and lens hood may become difficult to attach in low temperatures.
Keep them in a warm place such as a pocket until attached.
• If the unit is carried between locations that have extreme temperature
differences, protect the unit from rapid temperature change by placing it in the
carrying case.
• Please use the tribrach supplied as standard. If a different tribrach is used,
angle measurement errors may occur.
6