Altinex DA1902SX - Manual (Page 6)

DISTRIBUTION AMPLIFIERS
5
APPLICATION DIAGRAM 5
THE SERIAL DISTRIBUTION SYSTEM
In addition to functioning as a single distribution
amplifier, the DA1902SX may act as a building
block in the Altinex Serial Distribution System. The
Serial Distribution System provides a manner of
distributing a video signal to several displays in an
application where the displays are typically spread
a few distances apart. When numerous runs are
made from the displays back to a single
distribution amplifier at a centralized location, it is
known as the “homerun approach”. As an
alternative to the “homerun approach”, the Serial
Distribution System uses the concept of a video
bus to provide greater ease of installation and
greater flexibility.
In the Serial Distribution System, the DA1904SX
acts as an output module. Ordinarily, the source
signal is connected to the input of a DA1902SX
and this becomes the starting point for the bus.
The outputs are then connected to the output
modules, DA1904SX, which are usually located
at each display site. The output modules provide a
way in which the display can be fed while still
maintaining a video bus output, which can be
connected to several monitors. A maximum of 30
DA1904SX units and a total system length of 300
feet or less are recommended for optimum
performance. See the Serial Distribution System
on the following page for an example of the
manner in which the Serial Distribution System
can be applied.