71
Standard wiring diagram for electronic video door
entry installations with the use of splitters in buildings
with a single point of entry
Operation
When one of the push-buttons of the entrance panel is
pressed, the audio unit activates the video unit (connec-
tor 19) and generates an electronic call signal (terminal
7) which is sent by the call wire to the corresponding
monitor (terminal 5). The loudspeaker of the handset of
the monitor emits a warning sound, informing the house
of the incoming call. At the same time, the visitor hears
a sound, produced by the loudspeaker of the audio unit,
which confirms that the call to the house has been made.
The video unit switches on and captures the image of the
visitor and sends the video signal to the monitors (V1,
M).
The monitor is activated and connected to the power
supply terminals (terminals -,+) when it receives the call.
The monitor then sends the power voltage (terminals V1,
M) to the top output of the tap-off to which it is connec-
ted, allowing it to receive the video signal of the video
unit (terminals V1, M) and to see the image of the visitor.
The monitor is also connected to the common wire (2)
and to the lock release wire (1). If the handset is picked
up the audio wires (3 and 4) of the monitor are connec-
ted to the entrance panel, establishing conversation with
the visitor. When the lock release button of the monitor is
pressed, the audio unit detects the closing of the lock
release circuit (terminal 1 to ground). The audio unit then
sends an alternate voltage (terminals 11 and 12) to the
electric lock, permitting the opening of the door.
All the signals are closed through the common wire (ter-
minal 2) of the monitor and of the audio unit.
Time settings established by the audio unit:
Time limit to answer the call 30 seconds
Time for conversation 60 seconds or until the handset is
replaced
Auto switch-on
When the auto switch-on button is depressed and always
providing that another monitor is not active, the monitor is
activated and presents the same characteristics as if a call
has been received from the entrance panel.
Time settings for the audio unit 30 seconds or until the
handset is replaced
During the time settings (answer, conversation and auto
switch-on) all the other monitors are inactive.
STANDARD INSTALLATION IN DISTRIBUTION
6+N+COAXIAL
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