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DT-BDU
Interface
I terface
In
User Manual
2-Wire System
Model: BDU
Bus Amplifier
Bus-IN Bus-OUT PA PB
Tx/Rx In-Use
NoRoute Amp-ON
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1.About DT-BDU Interface
DT-
BDU Interface is a bus amplifier Interface for 2-wire series House systems.
It enables long distances connections (up to 300m) and connection of large number of video monitors in House systems.
Works as a Router in Apartment System and enables to connect up to 32 x video monitors to one BDU. Or as Gateway, and enables to connect multiple
Door Stations in Apartment Buildings
2. Terminal Description
6 5 4 3 2 1
DIP
6 5 4 3 2 1
INDICATORS
2-Wire System
Model: BDU
Bus Amplifier
Bus-IN Bus-OUT PA PB
Tx/Rx In-Use
NoRoute Amp-ON
BUTTONS
OUT
DS
DIP switches Settings:
DIP1
and DIP2 to set a BDU working mode
DIP
3 - DIP5 to set address
DIP
6 - video Impendence match
IN
IN
-1-
Tables of settings
DIP
DIP
1~DIP2
DIP
3~DIP5
DIP
6
DIP
State
3 4 5 6
3 4 5 6
3 4 5 6
3 4 5 6
3 4 5 6
3 4 5 6
Set as Repeater
Set as Router
Set as Gateway
Description
Reserved
Set as the first BDU
Set as the second BDU
3 4 5 6
Set as the third BDU
3 4 5 6
Set as the fourth BDU
3 4 5 6
Set as the fifth BDU
3 4 5 6
Set as the sixth BDU
3 4 5 6
3 4 5 6
Set as the seventh BDU
Set as the eighth BDU
6
V ideo Impendence match, set to ON
-2-
INDICATORS:
1.Bus-IN: Always On when connected
2.Bus-OUT: Always On when monitors connected
3.Tx/Rx: Flashes when communicating
4.In-Use: Always Off when in standby mode;
In working state, flashes when in automatic gain mode;
In working state, steady On when in fixed gain mode
BUTTONS:
1.PA: In working mode, each time you press "PA" button to reduce the
video gear a grade(no longer reduce when the gear is 1). Not
saved. Specific gears are indicated by 4 indicators.
2.PB: In working mode, each time you press "PB" button to increase the
video gear a grade(no longer reduce when the gear is 6). Not
saved. Specific gears are indicated by 4 indicators.
3.NoRoute: In working mode, press "NoRoute" button, Use 4 LEDS to
indicate current gear gain;
In working mode, press and hold "NoRoute" button for 3
seconds to switch the working mode (In-Use will indicate); If
"PA" and "PB" button have been pressed, that is, have made
the adjustment of video amplitude, the current adjusted gear
of video gain will be saved;
4.Amp-ON: In standby mode, press "Amp-ON" button, it will be forced into
working mode (audio/video power supply open).
In working mode, press "Amp-ON" button, it will be forced into
standby mode (audio/video power supply closed).
-3-
4. BDU as Repeater in House system connected daisy chain
4.1 Repeater Mode (Line amplifier):BDU can extend the distance of
DT system when works in repeater mode. As follows:
Max 140m from the first door station to BDU
Max 140m from the last indoor monitor to BDU
BDU
P C6
Repeater Mode
P C6
BDU
BDU
Wiring diagram:
AC~
1 2 3 4 5 6
BDU
PC6
BUS(IM) BUS(DS) OUT DS IN IN
AC~
PC6
BUS(IM) BUS(DS)
-4-
4.2 Router Mode. Maximum 8 BDUs could be connected
B P C6
4 A
4 A
1
4
7
*
2
5
8
3
6
9
0 #
BDU P C6
P C6
4 A
B
BDU
-5-
Wiring diagram:
AC~
PC6
BUS(IM) BUS(DS)
1 2 3 4 5 6
BDU
OUT DS IN IN
AC~
PC6
BUS(IM) BUS(DS)
1 2 3 4 5 6
BDU
OUT DS IN IN
AC~
PC6
BUS(IM) BUS(DS)
1
4
7
*
2
5
8
0
3
6
9
#
-6-
4.3 Gateway Mode: Common door station can call all monitors
(maximum 7 x BDU, 224 Video monitors)
4 A 4 A
4 A
PC6 B
1
4
7
*
2
5
3
6
8
0
9
#
PC6
B
PC6
4 A
4A
B
DBC4A
BDU
-7-
Wiring diagram:
AC~
PC6
BUS(IM) BUS(DS)
1 2 3 4 5 6
BDU
OUT DS IN IN
AC~
PC6
BUS(IM) BUS(DS)
1 2 3 4 5 6
BDU
OUT DS IN IN
AC~
PC6
BUS(IM) BUS(DS)
*
1
4
7
2
5
8
0
3
6
9
#
-8-
Mounting
Din rail
Step1: Mount the din rail to the wall with screws
Step2: Pull down the mounting buckle, then hang the unit on din rail
Din rail
Mounting Buckle
5. Specification
• Power:
• Power consumption:
DC24V
Standby 13.5mA; Working 156mA
• Working Temperature: -15
0
C~+55
0
C
• Wiring: 2 wire,no-polarity
• Dimensions: 90(H)×72(W)×60(D)mm
-9-
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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