PAGE 23 of 80 VX2200 TECHNICAL MANUAL VER1.4
BUS EXCHANGE DEVICES (2206N)
The 2206N is a powerful device which allows the system to be expanded up to 998 apartments. There are
two applications in which this unit can be used.
The first application is a system with both main entrances and sub entrances/blocks (Main entrances which
call all apartments on a system and sub/block entrances which only call the apartments in their own block).
In this application, a 2206N would be required for each block.
The second application is a single level system with up to 10 entrances whereby all entrances need to call all
apartments. In this application, a 2206N would be required for every 180 apartments and could be used to
expand the system up to 998 apartments (i.e. 500 apartments would require a minimum of 3x2206N).
Operation
In stand-by mode:
The signal from the local entrance terminals “LB” and “-” are linked to the “BO” and “-” terminals (the
“BUS out”), while the video signal of the “V1/V-L” and “V2-L” coming from the local entrances are sent to
the video output terminals “V1/V-O” and “V2-O”.
During the call:
- When a call is from a main entrance, it sends serial data to communicate with a 2206N (Based on the
2206N’s address). If BS (Local busy) is high (12Vdc = Not busy)) on the 2206N, the call will be put
through to the block, the system connects the “BUS Out ” (terminals “BO” and “- ”) with the “ Main
BUS” (entrance terminals “MB” and “-”) and connects the video outputs “V1/V-O” and “V2-O” to the
terminals “V1/V” and “V2”, connecting the main entrance with the user required. If the BS is low (0V),
the local panel(s) already have a call in progress, then the main panel will receive a busy message and
must wait until the local call ends.
- If a local call is made while a main entrance call is already in progress to that block, the local panel will
get a busy message and must wait for that call to end.
2206N CONNECTIONS
Connection Function
+12
12Vdc supply input
-
0V from supply
BS
Busy connection to local entrances
BO
Bus output to apartments
-
0V to apartments
LB
Bus from local entrances
-
0V from local entrances
MB
Bus from main entrances
-
0V from main entrances
V/V1
V1 of balanced video or centre core of coax video from main entrances
V2
V2 of balanced video from main entrances (Not used in coax mode)
V/V1
V1 of balanced video or centre core of coax video loop through to next 2206N
V2
V2 of balanced video loop through to next 2206N (Not used in coax mode)
V/V1-P
V1 of balanced video or centre core of coax video powered loop through to next 2206N
V2-P
V2 of balanced video powered loop through to next 2206N (Not used in coax mode)
V/V1-L
V1 of balanced video or centre core of coax video from local entrances
V2-L
V2 of balanced video from local entrances (Not used in coax mode)
V/V1-O
V1 of balanced video or centre core of coax to apartments
V2-O
V2 of balanced video to apartments (Not used in coax mode)
NOTE: When using coax for the video, the screens should all be terminated together (and soldered) in a connection block.
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