67009600-EN - Edition 2015 - Rev. 1.0
69
VX2300 Digital System - “2 Wire” Audio/Video Door Entry System
VX2300 Digital System - Installation handbook
Art.2380 Interface “2 Wire” to “4+1” audio system
Fig. 1
Fig. 2
DESCRIPTION
Interface to connect 4+ 1 audio devices to the VX2300 “2 Wire” Bus
(for example the Art.380 telephone interface). Using the items
listed above (Art.380) it is possible to use a conventional house-
hold telephone as a standard intercom.
The operating mode of the telephone depends on the connect-
ed device and on the connections made, refer to the instruc-
tions of the Art.380.
DIPSWITCHES AND JUMPERS FIG. 1
SW1 Switches from 1 to 7 are used for unit address (from 1
to 127 binary coded). Last switch (8) is not used
SW2 Switches 1,2 and 3 are used to set privacy duration time.
Switch 4 is used to set the “Priv” signal operating mode
SW3 Switches 1,2 and 3 are used for intercommunication
settings. Switch 4 is not used
S1 Impedance terminator. The jumper must be normally
closed. When more videophones/intercoms are connect-
ed in parallel (from a peripheral to another and so on un-
til the last) the jumper must be open for all the intercoms
except for the last following the order of connection.
PROGRAMMING
After each programming operation carried out through dip-switches or jumpers it is necessary to temporary disconnect the device
from the BUS or from the power supply if locally powered.
SW1 DEVICE ADDRESS
SWITCHES STATUS BINARY CODE DECIMAL VALUE ADDRESS
7 6 5 4 3 2 1 64 32 16 8 4 2 1
OFF OFF OFF OFF OFF OFF ON 0 0 0 0 0 0 1 1
OFF OFF OFF OFF OFF ON OFF 0 0 0 0 0 1 0 2
OFF OFF OFF OFF OFF ON ON 0 0 0 0 0 1 1 3
OFF OFF OFF OFF ON OFF OFF 0 0 0 0 1 0 0 4
OFF ON OFF OFF ON OFF ON 0 1 0 0 1 0 1 37
ON ON OFF OFF OFF ON ON 1 1 0 0 0 1 1 99
The table above shows how to set the address of the device. Considering that ON = 1 and OFF = 0, multiply each digit for the rele-
vant decimal weight then sum the values obtained to get the address: E.g. as highlighted in the table OFF,ON,OFF,OFF,ON, OFF,ON
in binary is equal to 0100101 then multiplying each digit for the relevant decimal weight you obtain the address that is 37.
Note: the maximum number of units allowed is 100 but the address of each unit can be a value between 1 and 127.
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