3 ELEMENTS OF ENTRY PHONE
connected to the monitor. Monitor will not co-operate with video-doorphones man-
ufactured by other producers or analog video-doorphones.
Monitor MV-6451
Monitor fulfills the same functions as MV-6450, but it enables to connect up to
3 additional cameras. In order to switch images received from a successive camera,
a push-button situated on the monitor is used.
Monitor MVC–6550 and 6650
Colour monitors for Laskomex digital systems. They are loud speaking monitors
without receivers with TFT display operating in duplex system. Detailed information
on monitor assembly and use are included in the instruction enclosed to them.
Signal distributor CVR-1 and CVR-2.
Vision signal distributor is intended for the entry phone in video version. It en-
ables connecting the monitors to entry phone installation or branching the electrical
installation of entry phone. Furthermore, distributor amplifies vision signal.
Electric system, which connects electronic cassette with monitors, is made in form
of bus-bar with distributors CVR-x on the floors. Wires from monitors should be
routed to the distributors. The installation method is important - wire should be
routed from one distributor to the next one and in the distributor at the end of
bus-bar the line load should be configured properly (see dwg 13, page 23).
Signal distributor has one input of signals L+,L-,C+,C- with screw terminals (ARK)
and four independent outputs with sockets RJ 45 (CVR-1) or ARK (CVR-2).
Distributor CVR-1 does not require power supply adaptor – it is supplied from mon-
itors connected to it, although it has clamps enabling supplying it from other source
e.g. electronic cassette EC-2502. It is used when the distributor operates as signal
adapter.
Distributor CVR-2 require external power supply adaptor, which can be also used
to supply monitors.
In the distributor there is an amplifying and correction system of video signal al-
lowing optimal adjustment of distributor parameters to the parameters of electrical
system.
Video signal change-over switch CVP-2
Change-over switch CVP-2 is intended for usage with doorphone in video version.
It is used to switch over video signals received from cameras situated in various outer
panels. The change-over switch located at the main entrance enables connection
of signals received from maximum four panels. The one used at the slave entrance
can switch over video signals received from maximum 3 outer panels and from one
from main entrances. The change-over switch includes two signal outputs X and Y,
which can be used in order to branch signal within the doorphone installation.
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