V-Tech VT-BDU Manual - Manual

1. Introductions
2. Terminal Description
-1-
VT-BDU user manual
The BDU unit is designed for VT video door phone system, for the purpose of video
repeat and video signal impedance matching. The main features of the BDU are as
follows:
● Distribute the video signal when multi monitor are installed.
● Muitiple BDU can be used when multiple distributor nodes need to be applied.
● Work as a repeater in a long wiring distance system.
4B
3Y
2W
1R 4B
3Y
2W
1R 4B
3Y
2W
1R
VT-BDU
JW/VP1 JW/VP2 JW/VP3
1R
2W
3Y
4B JW/OS
HI 75R
150R
SET-3Y
VT System Distributor
VT-BDU
86.0
86.0 45.0
JW/OS
SET-3Y
JW/VP1 JW/VP2 JW/VP3
● SET-3Y: Video impedance setting; total 3 settings can be available.75R,150R and HI.
1). connect one BDU. Set to 75R when the distance from door station to BDU is within
50 meters,otherwise set to 150R.(note that set to HI when the video signal is weak)
2).connect multi BDU.Set to 75R when the distance between BDU is within 50
meters,otherwise set to 150R.(note that set to HI when the video signal is weak)