Maintenance; Troubleshooting - Sight mark SIGNAL N320RT User Manual

MAINTENANCE

Proper maintenance of the Sightmark Signal RT is recommended to ensure longevity. Attempts to disassemble or repair
the unit will void the warranty. It is recommended that when the unit becomes dirty that it is wiped down with a dry or
slightly damp cloth. Blow dirt and debris off all optics and then clean lenses with a lens cleaning cloth. To remove oils or
dried water spots, apply a small amount of denatured alcohol to a lens cloth or cotton swab. Clean the surface of the lens
and let dry. Finally use your breath to clean the lens once more. No further maintenance is required.
WARNING
The Signal RT is a digital night vision unit, this allows the unit to also be used during the daytime without damaging the
unit. However, it is not recommended to point the Signal RT at bright light sources such as the sun. Using the unit from
cold to warm conditions will cause condensation to form on the lenses. It is recommended to keep the unit in its carry case
for 2 to 3 hours when transitioning from cold to warm temperatures.
WARNING!
• DO NOT submerge the unit into water.
• DO NOT leave the unit in direct sunlight or rain.
• DO NOT expose the unit to high heat as this may damage the unit.
• DO NOT cover the IR heat sink (5). Keep it clean to insure proper performance of the long range IR illuminator.
• DO NOT connect inappropriate equipment (i.e. headphones) to the video output. This may disable the unit.
• DO NOT attempt to focus the long range IR illuminator. This is a fixed focus beam.
• Up to seven light or darks spots on the LCD display is acceptable and not considered defective.
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STORAGE
Proper authorization is required before shipping any product back to Sightmark. Failure to obtain authorization could
result in your product being returned to the wrong address, lost, or damaged. Sightmark is not liable for products returned
without authorization.

TROUBLESHOOTING

Never ship back a product without getting proper authorization beforehand. Doing so could result in losing the
product due to a multitude of reasons, i.e. sending it to the wrong address and other problems associated with
unexpected packages.
The unit will not turn on:
1. Check the polarity of the batteries. Reinstall the batteries if necessary.
2. Clean the battery compartment contacts with denatured alcohol and a cotton swab.
3. Install fresh batteries.
The IR illuminator will not turn on:
1. Adjust the brightness of the IR, noting brightness indication on the display. Adjust the display brightness. If no IR light
is being detected the unit may need to be returned for service.
The image is dark:
1. Make sure the lens caps on the objective lens is opened and the IR illuminator is on. Adjust the display brightness and
the IR illuminator brightness accordingly to obtain a bright, clear image.
There are light or black dots on the display:
1. The presence of dots on the display is caused by sensor production technology and is not a defect. No action
is required.
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