English, Frequently asked questions, Technical data – Marmitek VIDEO DOORPHONE User Manual
Page 7
Cable length
Required cable type
1-25m
4 core cable of minimum 4x 0,55mm
2
25-50m
coax cable, 75 ohm of minimum 0,5mm
2
+ 2 wire audio 0,35mm
2
50-100m
coax cable, 75 ohm of minimum 1.0mm
2
+ 2 wire audio 0,35mm
2
100-300m
coax cable, 75 ohm of minimum 1.5mm
2
+ 2 wire audio 0,5mm
2
c. Marmitek Camera corner bracket mounting
To be able to mount your DoorGuard400 camera in the corner of the door frame. Art.no: 09746
7. FREQUENTLY ASKED QUESTIONS
There is no image
Check if the power cable is properly connected to the power socket.
Check the position of the button for minimum and maximum contrast, and turn the wheel on the side to
select the best image.
Check if the connectors are properly fixed
There is no sound
Check if the connectors are properly fixed
The image is hazy (clouds)
Check if there are interferences in the surrounding area. For example a high voltage cable, electric
appliances etc.
Check if the 75 Ohm switch is in the right position; ‘Off’ in case only one monitor is used, and only in case
multiple monitors are used, the switch of the last monitor should be on ‘On’.
Do you still have questions?
Please check out www.marmitek.com for more information.
8. TECHNICAL DATA
Monitor
Resolution:
420 picture lines
Power supply:
100-240V AC
Screen:
14 cm colour LCD
Bell sound:
Ding-dong (adjustable volume)
Power consumption:
Max 15 Watt
Door open switch:
Max DC24V/1A or AC24V/1A.
Dimensions:
195x260x40mm
Camera
Resolution: 352x288
Pixels
Camera: CMOS
Lens en angle:
F3.6 mm 78°
Light sensitivity:
0,1 LUX
Night vision:
4 bright LEDs
Sound:
Built-in microphone en loudspeaker
Material: Impact-resistant
casing
Dimensions:
58,5x134,5x40mm
7
DOORGUARD400
TM
ENGLISH