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INSTALLATION INSTRUCTIONS
476. VIDEO DISTRIBUTOR-AMPLIFIER.
It allows for the distribution of the video signal
coming from the cameras on 5 independent
lines. It is not necessary to terminate on 75Ω
the unused outputs.
Connection of the coaxial cable with distribution on maximum 5 column rising (serial and/or with video distributors)
In video systems with different
columns rising or with a high
number of users, it is necessary to
use the video distributor-ampli-
fier art.476.
It is not necessary to terminate the
unused outputs on the 75Ω resist-
ance.
Connection of the coaxial cable with video signal distribution on more than 5 risers
If more than one video distributor is to be
used, an extra power supply, art. 1281 is
necessary.
Terminals
F
General ground
14
Positive power supply
IN
Video signal input
1-2-3-4-5
Video signal outputs
Video ground (shield of the coaxial
cable)
Connection of art. 476 as video amplifier for long distance systems
For this use, one output is to be connected; do not terminate the other outputs on the 75Ω resistance.
93
(MT12 - Gb2004)
Technical data
Power supply
Operating current at max. load
Gain at max. load
from 0 to 3.5dB (adjustable)
Gain with one output terminated to 75Ω
from 0 to 9dB (adjustable)
Bandwidth
Operating temperature
Maximum permissible humidity
Housing
DIN 8 modules A
21 ± 3Vdc
250mA
>5MHz
0°÷+50°C
90% RH
coax
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