124
(MT12 - Gb2004)
I
NTERCOMS
*
V
IDEOINTERCOMS
*
T
ELECOMMUNICA
TION
coax
All installation diagrams in this technical manual are drawn with only one video intercom for each user. It is possible to “personalise” the installation
by properly matching the applications on the following pages (page 126 to 148) to the basic diagrams (page 99 to page 123). Such examples refer
to applications with one video intercom entrance. To realise systems with 2 or more audio/video entrances were more than one control switch ON
is needed, use for this function the first buttons of the video intercom (P, P1, P2, etc.) and the lower ones (P3, P4, etc.) for the intercommunicating
calls.
In the basic diagrams the dashed lines identify the wires for control switch ON, whereas in the additional diagrams the dashed lines also refer to
the wires for intercommunicating service.
When the simultaneous switch ON of several video intercoms is needed and extra power supplies are to be added, do not forget that terminal I
of timer 1382 can be connected to a maximum of 3 power supplies 1281.
EXTENSION OF VIDEO INTERCOM SYSTEMS
Additional diagrams
NOTES
1) To have the intercommunication system you must:
a) - make the connections shown with dotted lines,
b) - apply the module 1443E inside the timer 1382 (see page 90),
c) - use expandable brackets WB5160, WB5660, WB1260, WB2160, verifying that the
mobile jumper J1 located on the video intercom brackets is in intercommunicating
position 1-2 (see page 73, 75, 77, 79 and 80).
2) In intercommunicating intercoms you must:
- cut the jumper W1,
- add the electronic buzzer SR40,
- add the necessary number of PT501 button groups and
connect one of the two terminals to terminal 7 of the intercom.
3) If the video system is realized with coaxial cable
connected in serial mode (input and output from the
video intercom), you must cut the 75
Ω
resistance
of the bracket and leave it
only on the last video inter-
com.
4) When using the video in-
tercom PV2160 the addi-
tional buttons P1, P2, P3,
P4 and P5 change into T1, T2, T3, T4 and T5,
respectively (T6 does not exist because the maxi-
mum number of additional buttons is 5).
5) The diode shown in this installation diagram must
be connected to power video distributors DV2 and
DV4. The diode is not necessary if no video
distributors are used.
Example of combination of an additional dia-
gram with a basic diagram for the realisation of a
one-way system with intercoms and video inter-
coms in parallel with or without intercommunicat-
ing service (description on page 125).
W1
1
PT 520
SR 40
X2
7
9
X1
