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2. PRECAUTIONS
Telescope
• Aiming the telescope at the sun will cause internal damage to the instrument. Use the solar filter
when observing the sun.
C"25. OPPTIONAL ACCESSORIES"
Tribrach Clamp and Handle
• When the instrument is shipped, the tribrach clamp is held
firmly in place with a locking screw to prevent the
instrument from shifting on the levelling base. Before using
the instrument the first time, loosen this screw with a
screwdriver. And before transporting it, tighten the locking
screw to fasten the tribrach clamp in place so that it will not
shift on the tribrach.
• The handle of the instrument can be removed. When
operating the instrument with the handle attached, always
make sure that the handle is securely fixed to the
instrument body with the handle locks.
Precautions concerning water and dust resistance
The instrument conforms to IP65 specifications for waterproofing and dust resistance when battery
cover, connector cap and the external interface hatch and are closed.
• Be sure to correctly attach the connector caps to protect the instrument from moisture and dust
particles when the connector is not in use.
• Make sure that moisture or dust particles do not come in contact with the terminal or connectors.
Operating the instrument with moisture or dust on the terminal or connectors may cause damage to
the instrument.
• Make sure that the inside of the carrying case and the instrument are dry before closing the case. If
moisture is trapped inside the case, it may cause the instrument to rust.
• If there is a crack or deformation in the rubber packing for the battery cover or external interface
hatch, stop using and replace the packing.
• To retain the waterproof property, it is recommended that you replace the rubber packing once every
two years. To replace the packing, contact your local sales representative.
The Lithium Battery
• The lithium battery is used to maintain the Calendar & Clock function. It can back up data for
approximately 5 years of normal use and storage (Temperature = 20°, humidity = about 50%), but
its lifetime may be shorter depending on circumstances.
The Levelling Base
• Always use the levelling base provided. During a traverse observation, it is recommended to use the
same type of levelling base for the target as well for accurate observations.
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