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This unit is a sophisticated electronic device. To operate it properly,
please read this manual carefully. Ignoring operation procedures
described in this manual will void your warranty.
• NEVER disassemble the unit. This device contains a source of high
voltage, which may be hazardous to your health.
• NEVER open objective lens of an active unit in bright light, including
daylight. In the daytime the objective lens must be covered by caps.
A tiny hole in each cap provides enough light for daytime testing.
• NEVER aim active unit at intense light sources, such as lights,
headlamps, campfires, the Moon, etc.
• NEVER reverse the polarity of a battery.
• NEVER connect the unit to external power sources.
• ALWAYS remove battery when the unit not in use for a long period.
• ALWAYS keep the objective lenses covered when not in use.
• ALWAYS store the unit in a warm dry place.
Precautions
BDN 14x50 is a sophisticated precise optical instrument equipped with
electronics. It should be handled with due care:
• Unit contains fragile components. Avoid impacts, dust, moisture and
sharp changes of temperature.
• Do not touch the optical surfaces other than for cleaning. Doing so
may damage the anti-reflection coating.
• Clean optical surfaces with professional lens cleaning supplies.
• Use only a soft clean cloth to clean the exterior of the device.
• Keep the unit away from sources of heat, such as heating appliances,
sunlight or central heating.
• Switch off the unit and remove the battery during the extended
periods of non-operation.
• Do not keep the device at temperatures higher than 60
o
C (140
o
F).
• Do not apply excessive force or pressure to the lens assembly,
movable parts and thread connections.
• Small dark and/or light points may be seen in the field of view due to
considerable optical magnification of the eyepiece. This does not
affect the operational capabilities of the device.