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Quad Speed (176.4 kHz, 196 kHz)
Quad speed MADI does not have a standardized frame format. Therefore S/MUX 4 is used. The encoding
works the same way as S/MUX 2, except that four consecutive channels are used to transport one audio
channel. This reduces the available number of channels to 14 ("56 Ch." setting) or 16 ("64 Ch." setting).
When using MADI, the sample rate of the incoming MADI signal and the expected frame
format of the outgoing MADI signal must be set in the device.
Since the M-32 AD Pro II-D has two independent MADI ports, all 32 analog inputs can be
sent at 192 kHz by using both ports, each carrying 16 audio channels.
9.2.2. Connecting Two Identical MADI Signals for Redundancy
The coaxial MADI input can be configured to automatically switch to an existing MADI optical signal in
case the coaxial signal fails. While existing routing and clock settings from the coaxial MADI input are
kept, the port's name is changed to MADI Auto Input and its icon changes to reflect the feature. The
failover is seamless if the active input loses lock abruptly (e.g. one of the cables is unplugged).
For a seamless failover, the two MADI signals must be identical. However, only the SYNC
and LOCK states are evaluated to confirm the current input state. It is therefore possible to
send two different signals to the M-32 AD Pro II-D as long as they are in sync.
To create MADI redundancy:
1. Switch on "enable MADI redundancy" in the coaxial tab of the INPUT section. The port will be
renamed to MADI Auto Input.
2. Create a routing from MADI Auto Input to any output.
3. If the device should also slave to MADI Auto Input, choose it as clock master in the CLOCK section.
4. Connect both MADI signals with identical audio.
To create MADI redundancy using the web remote:
1. Open the MADI Coaxial input port in the routing view.
2. Toggle the switch "Auto Input" to ON.
9.3. Dante Input
Connections to the M-32 AD Pro II-D are created and inspected using the Dante® Controller. It can be
downloaded as described here: Dante Connectivity.
On the web remote, the Dante input is shown as an expandable tile with all incoming audio levels:
RME M-32 AD Pro II-D User's Guide
The user is notified of the lost signal with a warning and redundancy can be
re-established.
9.3. Dante Input | 41
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