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The MARIAN TDM SyncBus
Principles of the TDM SyncBus
The TDM SyncBus is the collective transport of digital audio- and
synchronization signals. With the help of the TDM SyncBus all signals of
an audio system featuring the TDM SyncBus may be send out to other
Marian sound cards with TDM SyncBus option or returned to an audio
application again. The principle of operation of the TDM SyncBus can be
compared quite well with the pneumatic dispatch or tube system within one
or between several office buildings.
Imagine this: Ms. Smith, from the press department sends out a press report
on channel 1 of the tube system. It arrives at the distribution central. If Mr.
Mayer from the financial department wishes to read the report, he needs to
call for it at the central. He will then receive it in the inbox of channel 1.
The same way as Ms. Smith uses a tube channel to send out a document
within the building, you can use a TDM channel to send out a signal to the
TDM SyncBus via the Output Control. The same way as Mr. Mayer
receives the document in the inbox, the audio signal of the TDM SyncBus
lands up in the input of the TRACE PRO AE Mixer.
This is also possible: Mr. Miller from the neighboring building may also
request the message of Ms. Smith. For this, the distribution central simply
copies the document and sends it out a second time to Mr. Miller.
That means: If several Marian sound cards with TDM SyncBus are
installed in a computer, the signals of the TDM channel are available to the
other sound cards as well.
BUT: The capacities of the pneumatic dispatch are limited. E.g. if Mr.
Miller from the neighboring building also wishes to send a document, he
must not use channel 1, since Ms. Smith from the press department is
already sending out her stuff here. All in all there are only 8 channels,
that’s why Mr. Miller must decide for channel 2 to 8.
For the TDM SyncBus this means: only one signal in one channel but eight
channels at the maximum can be distributed simultaneously. That is to say
that a certain TDM channel may only be active in once Output Control.
Using the TDM SyncBus
