Videx VK4K Series Installation Handbook page 15

VK4K/6458 Series "6 wire Bus" videokit
Art. 6458
4.3" hands free colour display digital videophone
Fig. 1
DESCRIPTION
Surface mount hands free videophone incorporating a 4.3" Hi-Res full colour active matrix LCD monitor designed specifically for the
"6 wire" videokit (VK4K, VRVK and VK8K range).
Including 4 buttons: "camera recall" "open door" "service" and "privacy".2 LED's* to indicate the privacy activated and open door.
Programmable privacy duration and number of rings. Intercommunicating call and door call.Adjustments: call tone volume switch
(3 levels), picture hue, contrast and brightness.
* The operation of some LED's and the functions described may require additional cabling
PUSH BUTTONS (FIG. 1)
Service push button.
Shorts the "SB" terminal to GROUND (open collector 24Vdc 100mA max) while the button remain pressed.
Privacy ON-OFF button.
When the system is in stand-by, the pressing of this button activates (LED switched on) or disables (LED switched
off ) the "privacy" service. The service is automatically disabled when the programmed privacy time expires. When
the service is enabled the videophone does not receive calls.
Door-open / intercommunicating call button.
With speech lines open to the entrance panel, press this button to open the door. If the terminal "LD" is properly
connected the relevant LED remains switched ON until the door is closed.
Intercommunication only works when the system is in the stand-by condition.
Switch 4 of the SW1 dip-switch selects the type of intercommunication:
OFF Intercommunication between two apartments - press the key button to call the videophone(s) in the other
apartment. A busy tone will signal that the other videophone is in conversation with the door station and so
cannot be called.
ON Intercommunication between videophones in the same apartment
- press the key button one, two, three or four times to call videophone with extension address 1, 2, 3 or 4 (Set on
dip-switches 2&3 of SW1).
Any intercommunicating conversation is always interrupted by an external call (i.e. External calls take priority).
Intercommunication push button.
For an intercommunicating call, press as many times as the extension or address value to call (see SW3 Intercommu-
nication Settings).
VK4K/6458 Series - Installation handbook
191mm
27mm
15
66251410-EN - V 3.4 - 31/08/16