Poznámky redaktora
8mmwire diam-
eter).
.8mm wire diame-
ter).6
mm/150
m
K
0.
Example system with home stations and specification cable lengths.615
Gira electrical installation systems
Video Door communication
I
Technical
information
Video amplifier
Order No.: 1226 00.6 0.
Cable lengths
In systems with video components, the maximum total line length is
300m (distributed over several cable sections).6mm wire diameter
-
150m with 0.
Maximum line lengths with video components from the control unit to
the last device (when using the video amplifier):
-
100m with 0.
The lengths specified this example are the maximum line lengths per
section. 1222 00
Technical data
Ambient temperature: -25°C +70°C
Port: Screw terminals
Dimensions D): 27mm
Installation:
surface-mounted sur-
face-mounted junction box
-
flush-mounted deep flush-
mounted device box
-
on top-hat rail using included
DRA adapter
Device description
The video amplifier used extend the range Gira door communica-
tion systems with video function.
Without video amplifier, the maximum cable length from the first cam-
era the last home station 100 150m (for 0.
Bus_OUT
Connection the video amplifier home stations with video function.
The video signal forwarded amplified state via Bus_OUT.
The number devices depends the number simultaneously called
up home stations with video function:
Home stations video per residential unit 3
Residential units 6
Home stations 18
The following rules apply:
- maximum devices can connected each cable section.6 0.
The video amplifier increases the volume the incoming video signal to
the maximum permissible bus volume and outputs the output the
device.
Connection terminals:
Bus_IN
Connection for the incoming video signal from door stations with video
function, DCS-camera-gateways DCS-IP-gateways. 100 0.
100
m
K
0.
With video amplifier, the maximum cable length from the first camera
to the last home station 200 300m (for 0.8
mm
(A)
(A)
(A)
(B)
(A) video distributor order no.
max.8mm wire diameter
A maximum video devices may connected cable section.
With video amplifier, the cable length between the door and home sta-
tion can extended 100 150m maximum 300m.
Because the video signal the video amplifier only routed one
direction from Bus_IN Bus_OUT, all devices which emit video signal
must connected Bus_IN via the Gira 2-wire bus.: 1220 00.
Note
The video control unit can supply devices with electricity (e. g.
- maximum video distributors including video multiplexers can
be used one system.6 mm/150 0.
- The video amplifier counts device. However, the maximum line lengths (from the control unit the
last device) may not exceeded. doing so, the line attenuation from the source the video sig-
nal the input the video amplifier compensated.
28 home stations, door stations with colour camera, video amplifier).
(B) video amplifier order no.8 mm
max
