2N Door camera for 2N Helios - Installation manual - camera 9135200E, 1701 v2.0 - Příručka (Stránka 4)

6.
Select the camera mode
and video cable type via
jumpers. In the "Video
on during call“ mode, the
output is active when a
call is being made
to/from Helios. When the
call is terminated, the
video remains active for
about 7 seconds and
then switches off. Select
the "Permanently on"
mode for outdoor
installations to avoid camera damage by air humidity. It is because the camera
is heated during operation and thus no moisture condensation can occur.
7.
Connect a video cable to the Video Output terminals
on the main board. If you use a twisted pair instead
of coax cable, it is not relevant which conductor
leads to which terminal but you are advised to
record the arrangement (+ / - mark, conductor
color). You will use this information while installing
the LCD monitor or video server on the other cable
end. If you use a coax cable, connect its live wire to
the + terminal and the shield to the - terminal. If you use a UTP cable, connect the
video signal to such two conductors that are twisted together (making a twisted
pair), never use two arbitrary conductors. By connecting or disconnecting the jumper
set the impedance match of the video output for the coax cable or twisted pair.
8.
Adjust the camera to desired viewing angle.
9.
Insert cradle with the speaker back into the main board. Make sure that the cradle
fits properly in the appropriate holes.
10.
Reassemble the door phone by mounting the plastic cover to the base and secure
with screws (4x) as well as placing back the metal cover.
Technical Parameters
Supply voltage stabilised 12 – 13Vdc, common supply to camera and button backlight
Current consumption 85mA
Video modes permanently on / on during call / permanently off
Video output colour composite PAL video signal, 1Vpp
Video output matching 75 coaxial cable / twisted pair of UTP category 5 or higher
Resolution
420 TV rows
Sensitivity 3 lux
Function in darkness black&white mode, illumination by white and infrared LEDs under name
plates
Camera turning option horizontally and vertically in the range of ± 8º
Camera chip
colour, 1/4" CCD, automatic transition to black&white mode at dark
Camera objective pinhole type, f = 3.7mm
Camera angle of view 60º diagonally
Max. cable length
100m
 2011, 2N TELEKOMUNIKACE a.s. - Praha OV1701 v2.0