Urmet EASY2 1742 Manual Del Usuario página 12

INSTALLATION
MAXIMUM DISTANCE IN AN INSTALLATION
Comply with the following MAXIMUM distances:
50m between: −power supply unit
(basic or back-up)
−Call Module
100m between: −electric lock
−Call Module
200m between: −Call Module
−furthest decoder
25m between:
−decoder
−video house phone
FUNCTION WIRES
Video signal
Video signal
Voice
FUNCTION WIRES
Power supply
Power supply
Signal
FUNCTION WIRES
Power supply
Power supply
The distances are interpreted as between the TV camera unit and the furthest video house phone. Normal
wires can be used for distances of up to 100 m; for higher distances, up to 200 m, wires A and B must
be twisted together.
The maximum distance between the power supply unit and the TV camera unit is 100 m.
12
WIRES MINIMUM CROSS-SECTION
FROM THE TV CAMERA UNIT TO THE MONITORS
m
A mm 2
B mm 2
2
L mm
FROM THE POWER SUPPLY UNIT TO THE TV CAMERA UNIT
m
2
0 mm
2
+20 mm
2
SN mm
FROM THE POWER SUPPLY UNIT TO THE MONITORS
m
2
R1 mm
2
R2 mm
WIRES THAT CAN BE USED
The electric cable to be used for connections may
be a normal single-core cable with suitable cross-
sectional area.
WIRE CROSS-SECTION
The distances given above can be obtained providing
that a cable of suitable cross-section is used
according to the table given below
50 100
0,35 0,35
0,35 0,35
0,35 0,50
50
0,75
0,75
0,35
50 100
0,50 0,75
0,50 0,75
200
0,35 twisted pair
0,35 twisted pair
0,75
200
1,50
1,50
DS1742-001D