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DT-DBC4A USER MANUAL
DBC4A is a hub-type device for connecting multiple (up to 4 ) video
monitors and/or door stations together, via star connection
DBC4A
Impedance
switch
OFF
ON
POWER
IN-USE
Output
BUS
A
B
Output
C
D
POWER: This indicator will light up Red when powered on
IN-USE: Status indicator. Red light shows the system is in use
Impedance Switch: If more than one DBC4A connected, impendance
switch must be set On on the last DBC4A. The power indicator light will
turn from Red to Orange
Bus (bottom): Input ports
A,B,C,D (top): Output ports, to connect video monitors or door stations
2. Unit Mounting
DBC4A
DIN Rail Mounting
-1-
3. System Wiring with DBC4A
Multi Door Station Wiring:
ID=00
ON
ON
ON
1 2
12
1# Camera
ID=10
ON
ON
ON
1 2
ON
1 2
2# Camera
ID=01
1 2
3# Camera
ID=11
1 2
4# Camera
ON
1 2
1 2
monitors
L1 L2 PL S1+ S2+ S-
L1 L2 PL S1+ S2+ S-
L1 L2 PL S1+ S2+ S-
L1 L2 PL S1+ S2+ S-
A B C D
DBC4A
DPS
PS5
OFF
85~260VAC
ON
Impedance
switch
-2-
Multi Monitor Wiring:
ON
monitor
1 2 3 4 5 6
monitor
Impedance
switch
Code=14, DIP-6=on
A B C D
Code=15, DIP-6=on
ON
ON
monitor
monitor
Code=12, DIP-6=on
Code=13, DIP-6=on
ON
ON
1 2 3 4 5 6
1 2 3 4 5 6
monitor
1 2 3 4 5 6
monitor
Code=2, DIP-6=on
Impedance
switch
A B C D
Code=3, DIP-6=on
ON
ON
1 2 3 4 5 6
Code=1, DIP-6=on
monitor
1 2 3 4 5 6
monitor
Code=0, DIP-6=on
DPS
PS5
85~260AC
ID=00
ON
1 2
-3-
OFF ON
DBC4A
1 2 3 4 5 6
OFF ON
DBC4A
ON
1 2 3 4 5 6
5. Specification
Power Supply :
DC20~30V
Working Temperature:
-100C~+400C;
Wiring:
2 wires (non-polarity);
Dimension:
H89×W71×D45mm
6. Application
Applicable for 2-wire series House and Apartments video door entry systems
The design and specifications can be changed without notice to the user. Right to interpret
and copyright of this manual are preserved
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