fortessa DIGI-2, Technical Manual

Page: 47 / 80

TM
45 TM
Table of 1216 Settings according to the type of connection cable used
Type of cable Setting 1216
Specific cable FT4577 1 mm 2 cross-sect. (Ø 1.2 mm)
2
2
1
1
Two-wire cable 1.5 mm
2
cross-sect. (Ø 1.4 mm)
Braided and shielded cable 1 mm 2 cross-sect.
(Ø 1.2 mm)
Twisted telephone cable 0.28 mm 2 cross-sect.
(Ø 0.6 mm)
UTP5 cat 5 AWG 24 cable 0.2 mm 2 cross-sect.
(Ø 0.5 mm)
Two-wire cable 0.5 mm 2 cross-sect. (Ø 0.8 mm)
2
Installation rules for video door entry systems
Avoid placing the riser wires near power supply cables
(230/400V).
In the branches towards each user, insert terminal 1214/2
supplied to equip the telephones FT2428W/A and the bracket
FT5714.
Terminate each riser or branch with 1216 supplied with the Mixer-
power supply FT4896 and with the video module FT4660.
According to the cable used for the riser, set closure on 1216 as
shown in under table.
According to the cable used for the riser, assess the maximum
distance which can be reached between the Mixer-Power supply
FT4896 and the monitor furthest away, and between terminal of
branch terminal 1214/2 and the monitor furthest away.
According to the cable used for the connection, assess the
maximum distance which can be reached between the external
unit video and the Mixer-power supply FT4896.
Refer to the table on page 46 to assess the distances according
to the conductors.
Each FT4896 can manage a
MAX of 9 riser branches - see
diagram 8 on page 60.
In the case of systems with main and secondary entrances, it is
necessary to use the line concentrator FT4834/9 and the switching
device FT1224A.
In the case of a single entrance, it is possible to connect
up to 9
Mixers-power supplies FT4896 after FT4834/9 (see diagram 5 on
page 54).
Each FT4834/9 allows a
MAX of 9 branches: in the case where
several branches are needed (up to 16) , it is necessary to put two
FT4834/9 in cascade.
The additional FT4834/9 must be preceded by the relative video
signal amplifier FT4833/A (see variant 13 on page 66). A
MAX of
2 FT4834/9 in cascade can be inserted.
The MAX number of users which can be connected to a single
Mixer-power supply FT4896 is 100 regardless of whether they
are divided over a single riser or over several riser branches
(e.g.: 100 users over a single riser or 25 users over each of the
4 riser branches).
It is possible to connect
up to 25 monitors in cascade for each
riser branch (see variant 15 on page 67).
In this case, in order to determine the Max. distance between
external unit and the last monitor of the cascade, please refer to
the table on page 46 column
A .
The connection between several monitors with same user code
(
MAX 3 ) can take place in cascade or branched from the riser
following the variants 18, 19, 20, 21, 22.
Telephones FT2428W/A with same monitor user code must be
branched directly from the riser by means of 1214/2.
FT4896 supplies
only a single monitor for each call , therefore
for systems with several monitors with the same user code, it is
necessary to set the additional monitors as
secondary or supply
each additional monitor with power separately by means of
FT1212/B.
Set the bridges and the jumper on bracket FT5714 as shown in
the variants to the basic diagrams 18, 19, 20 according to the
configuration to be obtained.
The cameras of the external units must not be directed towards
direct light sources (e.g.. lamps, sunlight, reflecting surfaces, etc.).