9
main menu – CLOCK - SMUX operation
Internally the A32 DANTE always uses all 32 analog channels, but the
number of digital MADI, ADAT and Dante channels is limited in relation
to the SMUX mode currently in use.
SMUX/1
In SMUX/1 mode offers sample frequencies from 32kHz to 48kHz.
SMUX/2
When running higher sample rates (64kHz - 96kHz), the bandwidth
limitation makes it necessary to split the digital data for MADI, ADAT and
Dante into two separate channels (signal multiplexing). Thus, the
channel count reduces by half.
Both SMUX/1 and SMUX/2 offer signal redundancy for MADI. When the
MADI signal is lost, the A32 DANTE can switch automatically to the other
port if configured that way. Dante features also redundancy using the
two Dante ports.
SMUX/4
When running SMUX/4 Mode (128kHz-192kHz) the bandwidth increases
again, so now one data stream needs to be divided into four channels.
Therefore, the channel count reduces to a fourth of the original. ADAT is
not specified in this mode, so it is switched off.
Dante and MADI only offer 16 channels in this mode. In order to use all
32 analog channels, both MADI ports are configured as follows:
•
optical MADI: sends and receives analog channels 1-16
•
coaxial MADI: sends and receives analog channels 17-32
If Dante should be used in SMUX/4 mode instead of MADI, please go to
the DANTE CONTROL screen, and switch “Use Dante for SMUX/4?” to
ON. Dante only supports 16 channels in this mode, so the upper 16
analog channels are switched off.
