67009600-EN - Edition 2015 - Rev. 1.0
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VX2300 Digital System - “2 Wire” Audio/Video Door Entry System
VX2300 Digital System - Installation handbook
EXTENSION NO – SW.2..3
SW3.2..3
If the intercommunication between apartments is enabled (switch 1 of SW3 = ON)
leave these two switches in default position (both to OFF). Otherwise, if the inter-
communication is between the same apartment (switch 1 of SW3 = OFF), set the
extension addresses starting from 1. During the external call, all video monitors in the same flat will
ring but the video will be shown only from the videophone with extension address 1.
SLAVE MODE - SW3.4
SW3.4
This set up concerns the answering mode of the video monitor when there is more than one unit (max 4) in the same apartment.
OFF (default) = during a call, only the video monitor with extension 1 (master) will show the video. ON = the video monitor will
be switched on independently of the extension address: in this case the video monitor must be supplied locally using a power
supply Art. 2321 with connections BUS+ to teVAUX and BUS- to terminal GND on the connection terminals (the local power supply is
required for each black & white slave videophone or starting from the third slave videophone when they are all colour videophones).
This switch should also be set to ON on the master videophone when this mode is used.
BUS LINE TERMINATION
The factory pre-set is termination enabled. In case of more units
(intercoms, videophones or video monitors) in a parallel con-
nection (bus wires are connected to the terminals of the first
unit then from this to the second and so on up to 4 units max)
Termination must be enabled only for the last unit in the chain
while on all other units must be disabled. This rule applies even
if the devices in the apartment are of a different type (Telephone videophone video monitor etc).
TERMINALS
AL
Alarm input (not implemented yet)
LB
Local bell input (active low)
LB_AL
Ground output for use in combination with “AL” & “LB” active low inputs
DOL
Auxiliary LED power supply input (+12Vdc – normally used as “DOOR OPEN” LED)
C
Dry contacts relay common contact (during a conversation, keep pressed the
button for more
than 3 seconds to enable the internal link between terminals “C” and “NO” – the link remains until the
button is released).
Max 50Vdc
@ 100mA
NO
Dry contacts relay normally open contact (during a conversation, keep pressed the
button for
more than 3 seconds to enable the internal link between terminals “C” and “NO” – the link remains
until the button is released).
+30Vaux
Auxiliary 30Vdc power supply input (to be used when the switch 4 of SW3 is set to ON when more videophones have
the same address and must be switched ON at the same time).
GND
30Vdc power supply ground
+12Vaux
Auxiliary 12Vdc power supply input for memory board version (not implemented yet)
GND
12Vdc power supply ground
BUS
Bus input terminal
BUS
Bus input terminal
TECHNICAL SPECIFICATION
Housing/Mounting:
Kristallo Series 7” videophones - flush
or surface mountig
Push buttons:
Yes, 8
Programming:
Yes, carried out by the dip-switches
located on the rear of the videophone
Controls:
Loudspeaker and call tone volume,
brightness
Power Supply:
Supplied by the BUS line
Power consumption:
Stand-by:
3.3mA Max
Operating: 250mA Max
Working temperature:
-10°C +50°C
RESTORING FACTORY PRESET
To restore factory preset, proceed as follows:
• Cut off power supply;
• Make a short between “LB” and “GND” terminals;
• Restore power supply and wait until LED blinks twice be-
fore removing the short.
The unit parameters are restored to factory preset.
2
3
EXTENSION NO.
OFF OFF 1 (default, master)
ON
OFF 2 (slave)
OFF
ON 3 (slave)
ON
ON 4 (slave)
Termination enabled (factory pre-set).
Termination disabled.
Art. KRV782
Hands free videomonitor for VX2300 digital system)
