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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.
20
VC
8
V
M
W
V
75
KM8100
KM8600
KM8800
1
VC
8
V
M
W
V
75
ST7100
PL40P
MA42
PL41P
MD41
MA43
PL42P
V
M
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)
20
VC
8
V
M
W
75
V
KM8100
KM8600
KM8800
1
VC
8
V
M
W
75
V
ST7100
PL40P
MA42
PL41P
MD41
MA43
PL42P
V
M
PL40P
MA42
PL41P
MD41
MA43
PL42P
V
M
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.
2
3
4
1
5
OUT
TR
476
14
H
IN
F
F
(MT11 - Gb2006)
Technical data
Power supply
Operating current at max. load
Gain at max. load
Gain with one output terminated to 75Ω
Bandwidth
Operating temperature
Maximum permissible humidity
Housing
VC
8
V
M
W
75
V
ST7100
VC
8
V
M
KM8100
W
V
75
KM8600
KM8800
1
2
3
4
5
OUT
476
14
IN
F
1
2
3
4
5
OUT
476
IN
14 F
H
F
1282E
1282E
113
21 ± 3Vdc
250mA
from 0 to 3.5dB (adjustable)
from 0 to 9dB (adjustable)
>5MHz
0°÷+50°C
90% RH
DIN 8 modules A
W
75
12
VC
+
+
8
IN
V
DV2-4
M
V
OUT2
W
OUT1
75
IN
KM8100
KM8600
KM8800
1
VC
+
+
IN
8
V
DV2-4
M
OUT2
V 75
W
OUT1
IN
ST7100
H
F
1282E
IN
1
2
3
4
OUT
476
14 F
1281
5
230V
127V
0
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