Page 26
DP6i
Operators Manual
AES / EBU Operation Guide
Connection of AES/EBU signals is via the existing rear panel XLR connectors.
With the AES/EBU option fitted, selection of the routing options is possible as follows.
Use the SELECT key to scroll down the parameters until the AES LED is illuminated.
If the interface has been fitted correctly, it will not be possible to change the display
on the screen to one of four options as below:
aa
– Analogue in -> Analogue out
ad
– Analogue in -> Digital out
da
– Digital in -> Analogue out
dd
– Digital in -> Digital out
AES / EBU Connections
The AES/EBU digital signal is a stereo data stream, and so only one input XLR and
three output XLRs are used for the digital interface.
The connections are as follows:
Input A -
Analogue Input at all times
Input B
-
Switchable between
digital (stereo) input
and analogue input
Output 1
- Switchable between
digital out (for channels 1 & 2)
and analogue 1
Output 2
- Switchable
between
digital out (for channels 3 & 4)
and analogue 2
Output 3
- Switchable between
digital out (for channels 5 & 6)
and analogue 3
Output 4 - Analogue output 4 only
Output 5 - Analogue output 5 only
Output 6 - Analogue output 6 only
Note that the internal sampling rate of the DP6i is 48kHz. When the analogue in to
digital out route is chosen, the output sample rate will therefore be 48kHz. This
cannot be changed. When using a digital input, however, the DP6i will lock to any
sample rate from 32kHz up to 48kHz, and this will be the outgoing sample rate as
well.
Please be aware that as all filter coefficients and time delays are calculated based on
the units professional sample rate of 48kHz, there will be an offset introduced if any
other rate is used. For example, if the consumer sample rate of 44.1kHz is used,
then all filter frequencies must be shifted down by a factor of 44.1/48 or 0.92. Hence
a 1kHz filter will actually be centred at 920 Hz and so on.
Time related features such as delays and limiter attack and release times must be
shifted up by a factor of 48/44.1 or1.09. Hence a set delay time of 100mS will
actually be 109mS, and a limiter attack time of 4mS will become 4.36mS.
Summary of Contents for DP6i
Page 1: ......
