User`s guide

User’s Guide MADI Router © RME 29
S/MUX:
Values: On | Off
“Sample multiplexing” (S/MUX) describes the technique of spreading the
larger amount of samples per audio channel in double speed (88.2,
96kHz) and quad speed (176.4, 192kHz) signals to the 56 or 64 channels
of a single speed MADI signal. The receiver of the signal detects this as
single speed first - each original source channel now occupying two or
four audio channels in the MADI stream - however when manually set to
double or quad speed, the receiver can reassemble the original audio
signals.
For 88.2 and 96 kHz, this is an alternative to the so-called 96k frame
defined in the MADI standard, which has the advantage of being
automatically detected by the receiver if the receiver supports detection
of 96k frame based MADI signals. The 96k frame is active if S/MUX is set
to “Off” and the sampling frequency set to 88.2 or 96kHz.
For 176.4 and 192 kHz audio signals, S/MUX is the common mode of
transmission since the MADI standard does not define a “192kHz frame”
and should therefore be set to ‘On’.
Channels:
Values: 56 | 64
Sets the number of channels in the MADI stream.
AES-10 Mode 1 = 56 Channels
AES-10 Mode 2 = 64 Channels