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
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 sec-
onds 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 videophone 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 3.5” 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: 130mA 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 remove the short.
The unit parameters are restored to factory preset.
Art. KRV88-KRV86
3.5” Hands free videomonitor for VX2300 digital system
