EVS Broadcast Equipment SA
11
Performance
The DIO48 has high quality sample rate converters that are capable
of sampling up to 192kHz. The SRC (sample rate conversion)
based digital audio inputs can handle sample rates from 32k to
192k.
ADD-ON
Functionality
As described in the introduction the DIO48 can be used as an ADD
-ON card for embedding digital audio. Examples of Master cards
that are capable of embedding are ASV08, ASV10, ASC10,
SFS11, SFS21, and the SEB20. The SEB20 is an audio embedder
but can add an extra set of 8 audio channels when used with the
DIO48 without the need to cascade serial digital video equipment.
In ADD-ON mode the DIO48 receives a clock from the master
card. This audio clock is locked to the video on the master card.
An extra VCXO based PLL removes any jitter that might be
induced in the video environment.
The DIO48 also acts as a loop card for an additional ADD-ON
card. The block schematic illustrates this with the colored arrows.
The yellow arrow is the output of the DIO48. The red, blue and
green arrows provide a loop for adjacent ADD-ON cards.
Back planes
The DIO48 can be used with the BPL01, BPL04 and BPL05D
backplanes.
Miscellaneous
The DIO48 cards fit into the EVS SFR04 & SFR18 rack.
LED’s on the front of the board indicate the presence of an Audio
Input signal, Connection & Processor Errors.
The DIO48 can be controlled by EVS Synapse set-up software.
