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PRECAUTIONS
Before starting work or operation, be sure to check that the instrument is functioning correctly with normal
performance.
Charging Battery
• Be sure to charge the battery within the charging temperature range.
Charging temperature range: 0 to 40°C
• Use only the specified battery or the battery charger. Failures caused by using other batteries or battery
chargers are out of warranty including the main unit.
Warranty policy for Battery
• Battery is an expendable item. The decline in retained capacity depending on the repeated charging/
discharging cycle is out of warranty.
Telescope
• Aiming the telescope at the sun will cause internal damage to the instrument. Use the solar filter when
observing the sun.
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 tribrachs.
Before using the instrument the first time, loosen this screw with a precision
screwdriver. And before transporting it, tighten the locking screw to fasten
the tribrach clamp in place so that it will not shift on the tribrachs.
• 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
GM conforms to IP66 specifications for waterproofing and dust resistance when the battery cover and external interface
hatch are closed and connector caps are attached correctly.
• Be sure to close the battery cover and external interface hatch, and correctly attach the connector caps to
protect the GM from moisture and dust particles.
The specification grade for water proofing and dust resistance is not guaranteed when using USB connector.
• Make sure that moisture or dust particles do not come in contact with the inside of the battery cover, terminal
or connectors. Contact with these parts 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 dealer.
The Lithium Battery
• This instrument contains lithium battery. It lasts for approximately 5 years of normal use and storage
(Temperature = 20°C, humidity = about 50%), but its lifetime may be shorter depending on circumstances. To
replace the lithium battery, contact your local dealer.
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.
