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.
DIP-SWITCHES 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.
