BF Apartment Station Digital Entry System
PD
–166 Issue 1
Installation and Operating Manual
Page 40 of 48
Diagram I – Apartment Station Local Power Wiring
Where more than one extension video unit is required to provide "auto display" then
additional power supplies will be required
Note. For each cable run :-
Only one unit must be Master (Recommend the first unit)
Extension video units must be "daisy chain" wired to preserve video quality
The last (or only) video unit on the cable requires the Video Terminator "ON" all other
video units must have the Video Terminator "OFF"
Video Bell
Bell
28V
Audio
Data
Video
28V
12V
Audio
Data
BF
Apartment Station
Cat5
From Controller
To More
Extensions
PSU
340C
12V
The 28V– connection must
be made between all
units and the controller.
For maximum
cable distance
see text
B
rn
W
/B
rn
O
rg
W
/O
rg
G
rn
W
/G
rn
B
lu
W
/B
lu
B
rn
W
/B
rn
O
rg
W
/O
rg
G
rn
W
/G
rn
W
/B
lu
BF
Apartment Station
The 28V+ connection
is only connected to
the local power supply.
–
+
2
2
1
1
B
B
A
A
–
–
–
–
–
–
+
+
+
+
+
+
PSU
340C
12V
1 Cat5
Master Extension Extension Extension
PSU
340C
12V