FREE-HANDS SYSTEMS FREE-HANDS SYSTEMS DUO WITH SINTHESI PANEL
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DOOR PHONE AND VIDEO DOOR PHONE SYSTEM: Product Technical Manual
R
FREE-HANDS SYSTEMS DUO WITH SINTHESI
PANEL
The system offers typical free-hands features, i.e.:
• Electronic call from the outside push button panel to the indoor set.
• Conversation from outdoor station to indoor station and vice versa.
• Electric lock opening from the indoor set.
• Possibility of an additional electric control from the indoor set (for
example for stairs lighting).
The following installation are only possible:
• Connection to 1 outdoor station.
• Connection to 2 outdoor stations with automatic switching.
The secrecy of conversation function requires a wire more than the
normal system in the cable conduit. The phone yield of the new system
is higher, since a duplex telephone wiring with electronic balancing
has been used. In the case of “speech” on one of the two channels,
balancing drastically reduces the other channel, this avoiding the
Larsen effect.
The transmission and reception levels are calibrated on optimum value
during production. The installer can only adjust amplification towards
the outside by acting on the potentiometer mounted in the loudspeaker
module Ref. 1145/75. Amplification towards the indoor set is not
adjustable.
The new indoor set Ref. 752/23 is compatible and interchangeable
with the previous indoor sets Ref. 4340/23, and Ref. 4340/231, the
same for the power supply.
GENERAL INSTALLATION RULES
For a correct installation of systems the following must be kept in
mind:
• System wires must be introduced into metal or plastic tubes, where
there shall be no other wire, such as stairs lights lifts, or energy
distribution net wires.
• Use twisted coupled wires from power supply to outdoor set:
• One couple from microphone MIC.
• One couple for loudspeaking receiver ALT.
• System wires diameter depends on connections lengths, as shown
in the side table.
Section Diameter Distance
mm2mm m
Speech circuit and call
0,5 8/10 50
0,5 8/10 100
0,8 10/10 200
1 12/10 300
Door opener
0,5 8/10 50
0,8 8/10 100
1 8/10 200
1,6 8/10 300
Calls from the outdoor station come directly on the indoor set
loudspeaker operated by means of a determined frequency.
Also foresee wires for push button panel lamps lighting with a separate
transformer of adequate power (up to 2 lamps, the system power
supply can be used) and wires for electric lock opener button next to
the door.
FREE-HANDS SYSTEMS DUO WITH SINTHESI PANEL
GENERAL INSTALLATION RULES - FREE-HANDS DOOR UNIT
Name tag light bulb uptake is shown in the following table:
Ref. Description Power [W]
1145/71 Microphone module with 1 button........................0,35
1145/72 Microphone module with 2 buttons......................0,35
1145/11 Module with 1 button............................................0,35
1145/12 Module with 2 buttons..........................................0,35
1145/13 Module with 3 buttons............................................0,7
1145/14 Module with 4 buttons............................................0,7
1145/50 Repertory/house number module ..........................0,7
FREE-HANDS DOOR UNIT
The DUO free-hands system door unit consists of two separate
Sinthesi panel range modules only.
The Sinthesi two-channel door unit consists of the following parts:
•Loudspeaker module Ref. 1145/75
•Microphone module without buttons Ref. 1145/70
•Microphone module with 1 button Ref. 1145/71
•Microphone module with 2 buttons Ref. 1145/72
Module dimensions are: 90 x 90mm.
The microphone modules have a “call feedback” function. A visual
signal indicating that the call is actually being placed (blinking LED)
will be generated by the door unit when a call is being made by any
module with buttons.
IMPORTANT: This service is not available in 12 Vac call systems
(Jolly or Superjolly 1st series models) and if button common contacts
(G/T) are separated.
The transmission and reception levels are calibrated by default to
optimal values. External amplification can be adjusted by means of
the potentiometer on the 1145/75 speaker module. Amplification to
apartment station cannot be adjusted. The potentiometer fitted in the
microphone module acts on the apartment station transmission level
only when used as a spare in old Superjolly systems where the +
terminal is connected instead of the +M terminal.
Ref. 1145/75 Ref. 1145/70
Ref. 1145/71 Ref. 1145/72
ROSSI
BIANCHI
