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Digital Zoom
The MTM has the ability to provide
two times digital zoom. The circuitry
replicates the IR pixels in both the
horizontal and vertical dimension
thereby doubling the number of video
pixels in each dimension. This feature
is useful in close up examination of
details within the imagery.
Hand-free Use
The MTM incorporates a 1⁄4-20
threaded adapter enabling it to be
mounted onto standard tripods. This
threaded adapter may also be used to
clip to the standard AN/PVS-7 and
AN/PVS-14 helmet mount providing hands
free operation.
Field of View (FOV)
The MTM field of view of 29.6
degrees, coupled with the 320 x 240
detector array, provides the resolution
required to meet established detection
and recognition objectives and still
provides the situational awareness
required in a surveillance device.
Sensitivity and size is optimized in the
selection of the F/# of 1.05. Using the
320 x 240 format of the focal plane
array, this translates into a 23.4
horizontal field of view and a 17.6
vertical field of view.
· Focus range: 18 inches to ∞
· Operational temperature: –10C
to +50C
· Storage temperature: –34C to
+71C
· Adjustable focus - provides a
focus adjust range of 2 feet to infinity
Adjustable Diopter
The design incorporates a diopter
adjustment of +4.0 to -6.0 at a 1 inch
eye relief to allow use by a large
population of viewers without the need
for corrective lenses.
Video Out
The MTM provides a sealed electrical
connector which outputs analog RS-170
for use by remote monitoring or display
equipment. Also provided on this
connector are contacts for RS-232 to
receive and transmit signals allowing
for the downloading of the digital still
images into a PC through a COM port. The
MTM circuitry contains two discrete
amplifiers for the generation of the
video signals, one that provides the
signal to the OLED display and a second
independent amplifier for remote use.
This provides isolation between the two
video paths thereby providing immunity
of the displayed video from possible
interference caused by the remote video
equipment or wiring.
Reticle and Laser
The MTM has an integrated 840 (+ 10
/ -20) nm laser adjusted for 0.5 mW
output optical power. The laser diode is
capable of 50 mW but is tuned down for
class I eye safe considerations. The
laser diode has an integral
photo-detector to monitor the output
power thereby providing closed loop
control of the optical power over
temperature and the life of the unit.
As part of the electronic symbology, an
aiming reticle is provided which
designates the position of the laser
pointer. During the assembly process,
the laser is aligned to the center of
the thermal field of view. Because of
the potential danger to the mission and
the potential for inadvertent use of the
laser source, the MTM incorporates two
distinct indicators. The first consists
of alternating white and black squares
in both the lower left and upper right
corner of the display. The contrasting
colors ensure the operator will see the
designation even in the presence of a
saturated hot or cold scene. The second
indicator, if the operator is not
looking into the display, is a low
intensity green LED directed out of the
rear of the MTM which alerts the
operator that the laser is active.
Ease of Use
The MTM menu structure has been
optimized for ease of use with the more
frequently accessed functions readily
available to the operator. The POWER
button is multifunctional and produces
different effects depending on the
system status (i.e., ON, OFF) and how
the button is pressed.
Battery Life
The MTM operates for greater than 2
hours at 32°F. The MTM utilizes low
power, highly integrated circuit designs
to achieve a long run time on only two
DL-123 batteries. The measured current
draw at ambient temperature with the
unit imaging at 1⁄2 scale brightness is
0.25 amps at 6 volts (1.5 watts). With
the laser activated, the current
increases to 0.28 amps (1.68 watts). At
full operation with lasers on, using the
standard battery power, the run time is
predicted to be 7 WHrs / 1.68 W or 4.2
hours. The low battery indicator
displays the LOW POWER message when the
battery voltage reaches 4.1 volts. The
unit will usually remain operational
until the voltage drops to below 3.0
volts.
System Controls
Use of raised, tactile frame
enclosures around the switches allows
the operator to ‘feel the switch’ in
blacked out conditions. Recessing the
switches helps prevent inadvertent
activation. Noise free operation
required the use of more supple switch
domes with a depression force less than
200 grams. To mitigate the unwanted
power turn-on at underwater pressures, a
double tap ON feature has been added to
the software. Under pressure, the switch
remains closed and the unit will POWER
DOWN within 10 seconds thereby
preserving the battery life.
Body Finish
The MTM is constructed from an
advanced engineering polymer that has a
matte finish through and through and
will not reveal a silver or metallic
base metal when scratched. All exposed
aluminum or steel components are black
anodized to reduce reflection.
Noise Emissions
While operating, the MTM does not
produce noise detectable by anyone other
than the operator. When operating in a
steady state, the MTM does not emit any
noise at all.
Estimated Annual Operating Costs
Less than $50/yr for rechargeable
batteries (cost varies with use).
Additional Equipment Required:
None
Target Audience: This product is
NOT intended for use in active
firefighting environments. Recommended
for law enforcement and search & rescue.
About Insight Tech-Gear: Insight
Tech-Gear, as the commercial arm of
Insight Technology Incorporated, enjoys
the long and highly respected heritage
of the foremost developer and
manufacturer of tactical lasers,
illuminators and thermal imaging
equipment for the U.S. Armed Forces. An
ISO 9001 company headquartered in
Londonderry, New Hampshire, Insight
Tech-Gear is dedicated to providing
market-driven, technology-enabled,
awareness enhancing solutions to first
responders, industry professionals, and
responsible citizens.
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