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3. TECHNICAL CHARACTERISTICS
General
Magnification, x 2.8 (5.2*) 4.4
Field of view, degree 17 (9*) 10
Objective lens
Focus length, mm 64 (128) 100
F-number 1.2 1.5
Focus range 10 m to infinity
Eyepiece
Focus length, mm 35
Eye Relief Distance, mm 45
Dioptre setting +3, -4
Mechanical characteristics
Overall dimensions, mm 225 x 82 x 74 252 x 82 x 74
Weight, kg 0.97 1.10
Working conditions
Temperature range
-40
o
C to +50
o
C
Relative humidity 0 to 98%
* with optional 2x lens (doubled magnification).
Electrical parameters
Power supply 2 batteries (AА type)
Voltage, V 3
Continuous work time, h, minimum
- Stand-by mode (no I/R) 60
- Active mode (with I/R) 5
Image intensifier tube
Type Gen. II, 25mm MCP
Photo cathode sensitivity, µA/lm
230-440
Gain, maximum 50,000
Resolution, Lp/mm 41-45
Infrared illuminator
Type IR diode
Power, mW 75
Illumination angle, degree 8-10
Illumination Spectrum, nm 805
P.S. Technical characteristics may be improved without prior notice.
6
8. Make a control shot and find out whether the aiming point
coincides with the bullet hit point. (Make the correction again
if necessary);
9. Set the protective caps into their places.
The device is ready for operation.
While performing the adjustment it should be considered that the
marking displacement mechanism of the device is equipped with a
click holder that displaces the marking both in vertical and
horizontal direction.
Focus length of the objective lens, mm 64 100
One click shift of the marking at the
distance of 100 m, mm
54
34
At 100 yards, inches (”)
1.944
1.244
8. TAKING PHOTOS AND VIDEO SHOOTING
DN 310 can be supplied with an
optional adapter for photo/video
devices for night photo/video
shooting.
Night photo shooting with DN
310 is easily performed using
35mm SLR cameras such as
Nikon, Canon, Pentax etc. with standard objective lens (50-58 mm
focus).
Preparation of the device for photo shooting:
1. Screw the adapter ring supplied in the set (diameter 52mm or
37mm) into the setting place of the light filter of the objective
lens in your camera. If the objective lens of your camera has
another setting diameter for a light filter (for example, 49mm
or 58mm) your have to purchase step up or step down adapter
rings from the 52 mm to your size. Such adapters are typically
sold at camera stores.
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