66550070-EN - V6.5 - 15/06/21
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ESVK/KRV782 Series “2 wire Bus” videokit
ESVK/KRV782 Series - Installation handbook
MELODY TYPE
1. Press and keep pressed
button for 5 seconds to enter melody type programming mode: the “ LED turns on and the unit
emits a “beep“;
2. Press and keep pressed
button to play the current melody. Release
button then press and keep it pressed again to play
the next melody. Proceed in the same manner to select the melody;
3. When desired melody is selected, wait for some seconds and the LED will turn off;
4. The unit returns to stand-by mode.
VIDEOPHONE ADDRESS – SW1.1..7
The table below shows how to set the address of the videophone. Considering that ON = 1 and OFF = 0, multiply
each digit for the relevant decimal weight then sum 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 rele-
vant decimal weight you obtain the address that is 37.
SWITCHES STATUS
BINARY CODE - DECIMAL WEIGHT
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
ON
ON
ON
ON
ON
1
1
1
1
1
1
1
127
Note: The maximum number of units allowed is 100 but the address of each unit can be a value between 1 and 127.
BUS LINE TERMINATION - DEV1
The factory pre-set is termination enabled. In case of more units (intercoms,
videophones or video monitors) in a parallel connection (bus wires are con-
nected 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).
INTERCOMMUNICATION MODE – SW3.1
This switch establishes the intercommunication mode: in OFF position (default) intercommunication is between units in
the same apartment (same addresses but different extension); in ON position the intercommunication is between units
in different apartments (different addresses).
On installations where there are more than one intercom/videophone in the same apartment and intercommunication be-
tween different apartments is required, only one intercom/videophone may be set with this function (SW3.1=ON, SW3.2=OFF,
SW3.3=OFF). The other intercom/videophones in the apartment must be set for local intercommunication with extension addresses “2-
4” (slaves). From the intercom/videophone set for intercommunication with other apartments it will not be possible to intercommunicate
within the apartment but slave extensions 2-4 will be able to intercommunicate with each other within the apartment.
EXTENSION NO – 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
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 terminal +VAUX 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.
ON
1 2 3 4 5 6 7
8
SW1.1..7
Termination enabled
(factory pre-set).
Termination disabled.
ON
1
2 3 4
SW3.1
ON
1
2 3
4
SW3.2..3
2
3
EXTENSION NO.
OFF OFF 1 (default, master)
ON
OFF 2 (slave)
OFF
ON 3 (slave)
ON
ON 4 (slave)
ON
1 2 3
4
SW3.4
Art. KRV782
Hands free videomonitor
Summary of Contents for ESVK
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