12
TROUBLESHOOTING
Symptom
Probable Cause
Corrective Action
No visible Image
a. Objective lens cap not been removed.
b. Battery cover is loose.
c. Incorrect battery polarity
d. Weak battery
a. Remove cap
b. Tighten cover
c. Re-insert battery
d. Replace battery
Image flickers, flashes, or
clicking is heard
a. Normal for new battery to cause this for
first five minutes.
a. If condition continues contact manufacturer for service
instructions
Dark spots on screen
a. Cosmetic blemishes. Normal for this
technology.
a. Acceptable as long as it does not interfere with operation
of the device
Image not clear
a. Focus is not adjusted.
b. Too close to object
a. Adjust focus
b. Increase viewing distance.
Fixed pattern noise.
(honeycomb)
a. Cosmetic blemishes caused by too
mach illumination.
a. Acceptable as long as target resolution can be resolved.
Pattern of dark thin lines
(chicken wire)
a. Normal under worst conditions. These
lines will form hexagonal or square wave-
shaved lines.
a. Acceptable as long as it does not interfere with operation
of the device
Image dimmer than
usual.
a. Weak batteries
b. Low natural illumination level.
a. Replace the batteries.
b. Turn on IR illuminator.
5
DESCRIPTION
D-212 is the only Generation 1+ enhanced
binocular equipped with a built-in photocell that
guards the unit against bright light exposure.
This light-weight unit offers true-stereo depth
perception and features a built-in focusable IR.
The unique, wide exit pupil design eliminates
the need for interpupillary adjustment. The
optional 1x lens kit converts the D-212 into the
D-2MV Goggle for hands-free us or mounting on
a flip-up Headgear.
12
TROUBLESHOOTING
Symptom
Probable Cause
Corrective Action
No visible Image
a. Objective lens cap not been removed.
b. Battery cover is loose.
c. Incorrect battery polarity
d. Weak battery
a. Remove cap
b. Tighten cover
c. Re-insert battery
d. Replace battery
Image flickers, flashes, or
clicking is heard
a. Normal for new battery to cause this for
first five minutes.
a. If condition continues contact manufacturer for service
instructions
Dark spots on screen
a. Cosmetic blemishes. Normal for this
technology.
a. Acceptable as long as it does not interfere with operation
of the device
Image not clear
a. Focus is not adjusted.
b. Too close to object
a. Adjust focus
b. Increase viewing distance.
Fixed pattern noise.
(honeycomb)
a. Cosmetic blemishes caused by too
mach illumination.
a. Acceptable as long as target resolution can be resolved.
Pattern of dark thin lines
(chicken wire)
a. Normal under worst conditions. These
lines will form hexagonal or square wave-
shaved lines.
a. Acceptable as long as it does not interfere with operation
of the device
Image dimmer than
usual.
a. Weak batteries
b. Low natural illumination level.
a. Replace the batteries.
b. Turn on IR illuminator.
5
DESCRIPTION
D-212 is the only Generation 1+ enhanced
binocular equipped with a built-in photocell that
guards the unit against bright light exposure.
This light-weight unit offers true-stereo depth
perception and features a built-in focusable IR.
The unique, wide exit pupil design eliminates
the need for interpupillary adjustment. The
optional 1x lens kit converts the D-212 into the
D-2MV Goggle for hands-free us or mounting on
a flip-up Headgear.
