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67
2 WIRE
VIDEO
DOOR
ENTR
Y AND
HOME
VIDEO
SUR
VEILLANCE
SY
STEM
ON
346851
ON
OFF
ON
346851
ON
OFF
ON
346850
INT
EXT
ON
OFF
ON
346850
INT
EXT
ON
OFF
ON
346851
ON
OFF
ON
346851
ON
OFF
ON
346851
ON
OFF
ON
346850
INT
EXT
ON
OFF
ON
346850
INT
EXT
ON
OFF
ON
346850
INT
EXT
ON
OFF
ON
346851
ON
OFF
AuDIO AND VIDEO SYSTEM WITH WITH SYSTEM EXPANSION MODuLES, ITEM 346851
A maximum of 3 interfaces item
346850 and item 346851 can be used
in cascade In this case, by interfaces
in cascade it is meant interfaces
crossed by an audio/video entrance
panel to handset connection Only
2 interfaces, at the user discretion,
can retransmit the signal, making
another 200 m available on the A line
In order to recalculate the distances
if 3 interfaces are crossed, it is
GALVANICALLY INSuLATED SECTION
In this case, the interface 346850 galvanically separates the sections of the
system but DOES NOT regenerate the signal The distance of 200 m is not
between the system expansion module and the apartment interface, but
between the expansion module and the last handset
Configured with
MOD = 0
and
MOD = 5
346850
346851
346851
Entrance
panel
200 m
200 m
200 m
A
A
A
(with cable 336904)
Entrance
panel
Last handset
or apartment
interface
346850
line A
line C
line B
Power supply
Power supply
line B
line C
line A
Last system
expansion
module
346851
MOD= 5
Power supply
line B
line A
Galvanically insulated section
Galvanically insulated section
line C
346851
MOD= 0
346850
Power supply
Last apartment
handset
line B
line C
line A
Calculation of the apartment internal line
Last handset
or apartment
interface
346850
line A
line C
line B
Power supply
Galvanically insulated section
346851
MOD= 5
Last handset
or apartment
interface
346850
line A
line C
line B
Power supply
Galvanically insulated section
346851
MOD= 5
necessary to decide which interface
will NOT retransmit the SIGNAL
This interface will then not be
taken into consideration during the
identification of LINE A