Berger & Schroter 31540 User manual

8
(GB) Operating instructions
Night vision device with laser distance
measurement. Item No. 31540
Warning!
lease read these in-
structions completely
before using the opti-
cal instrument!
Warning
This instrument can be
damaged if exposed,
used, kept in strong
light!
Specifications::
Laser ranging distance:...........500 (max.)
Night vision: ...................................200 m
Pressure measure:..............300-1100 hPa
Objective lens Ø: ...........................32 mm
Optical magnification:...........................6x
Digital magnification: ............................4x
View angle: .....................................+/-20°
Digital Compass resolution:..................1°
Battery: ..........................................AA x 4
Battery life:.........................................2 hs
Size:...............175(L) x 100(B) x 51(H) mm
Weight: ............................................398 g

9
Components instruction
1. Power key
ON/OFF or ranging
2. Mode key
Function switch or parameter
settings
3. Key
Inrease of digital magnification
or brightness
4. Key
Reduce of digital magnification
or brightness
5. Key
ON/OFF of infrared light
6. Key
ON/OFF of the brightness
adjustment
7. Eyepiece
8. Objective
M
+
–
IR
B
Screen Display
a) Aiming point b) Data display
c) Magnification d) Pressure
e) Temperature f) Compass
g) IR-LED-mode h) Battery
i) Pitch angle
Operation instructions
1. Boot
Long press to boot.
2. Shutdown
Long press for 3 seconds.
3. Observation
a. Boot
b. Adjust the eypiece 1 - (7) to
get a clear screen display.
c. Adjust the objectiv 1 - (8) to
focus to get sharp images.
d. Digital magnification will be
implemented by pressing
or , ranged
from x1, x2, x3 x4.
+ –

10
4. Brightness adjustment
Press , to open the brightness
adjustment.
Press , to increase the
brightness.
Press , to reduce the
brightness.
B
+
–
6. Ranging mode
Press , to select the ranging
mode: normal, fog, targeting,
small, horizontal distance measu-
rement, vertical height measure-
ment, speed measurement.
M
5. Infrared illumination adjust-
ment
Press , to open the infrared illu-
mination adjustment.
Continuous press will cycle
from ON-IR-IR2-IR3-OFF.
When infrared light is open, the
screen display will show 2 - (g),
and led light will correspondingly
turn on at the rear of fuselage.
IR
IR
Normal ranging mode:
press to start continuous ran-
ging,
press to stop.
Fog mode
Press , to start measuring;
target distance should be >25 m.

11
Targeting small mode:
Press to start , point D should
be isolated from other in back-
ground, and only show the dis-
tance of D1.
Horizontal distance measure-
ment mode:
Press to start , data of MD and
HD will be continuously shown.
MD: AB or AC.
HD: AD

12
Vertical height measurement
mode
Press to start , MD and VH will
be continuously shown.
Method
Press , to start measuring.
Principle
Speed measurement mode