ATEIS DIVA8G2 - Manual (Page 276)

DIVA system 276
© 2012 ATEÏS
Vox@Net/Modan explanation:
The basics of those protocols communication is that DIVA receive audio stream along with RS-232
command.
So from a DIVA machine point of view, one will have to set RS-232 port setting to receive command
and set audio input to be triggered by RS-232 command.
In a simple manner, RS-232 will allow to activate a music source routing in zone(s) according to the
parameter sent via RS-232.
Both protocol are acting, from a DIVA point of view, as Master-Slave network in which DIVA is
always a slave.
More information about Modan command could be found about Vox@Net/Modan protocol in the
Communication Protocols chapter.
Data transmission mode:
The Modan protocols offers two different ways of communication between devices: Point to Point
and Multipoint.
Point to Point is a direct communication path between to system where Multipoint is using RS-232
bus with device dependant addresses.
Vox@net always use the Multipoint mode and remote access offers the choice between the two
mode.
In case of using Point to Point mode, no addresses are affiliated to devices in the remote
access system.
In case of Multipoint, all slave devices have a static address (range from 1 to 32).
Audio Routing:
As stated before, the Master (Vox@net server/client or remote access master) send information to
the slave unit in order to route audio to physical zones.
The Master sends a code that will be interpreted by the slave unit. From a Master point of view, the
code sent has no zone routing information. The routing corresponding to a code is slave dependant.
In Multipoint mode, it means that each slave can receive the same code and this code will be
interpreted differently by each of them, see schematics below.
With DIVA, the maximum number of audio channels a Vox@net system or a remote access that
can be used is three. The number of channels you need, will be determined by the number of
simultaneous audio stream you whish to receive. One channel is the minimum; however a two
channel configuration is most of the time the minimum audio channel configuration recommended.