Since there are two independent MADI ports, the total supported number of channels can
be multiplied by two. Since there are eight independent AVB streams, the total supported
number of channels can be multiplied by eight. The analog channel count remains identical
at all sample rates.
11.3.3. Selecting a Sample Rate
To configure the sample rate on the device:
1. Enter the
CLOCK
section (
see Section 2.3, “Controlling the device”
2. Use the button next to the current sample rate. Two blue arrows will appear to indicate that the
encoder can now be used to change the rate.
3. Rotate the encoder until the preferred sample rate is shown.
4. Push the encoder again to activate the setting.
11.3.4. Effects of Sample Rate Changes on Existing Routing
The 12Mic saves one routing table per preset, regardless of sample rate. A change of sample rate or
MADI frame mode can reduce the number of input and output channels available for routing. This does
not alter the routing table. Any existing routing is hidden until another change of sample rate re-enables
the channels.
Example:
A routing is created at 96 kHz with 32 channels, sending the MADI coaxial Input 1-32 to optical MADI
Output 1-32. If the sample rate is now changed to 176.4 kHz and the 56 Ch frame is activated, only the
first 14 channels of MADI coaxial input are routed to the optical output. Switching the sample rate to 44.1
or 48 kHz will reveal the previous routing for 32 channels.
11.4. Set Word Clock Output to Single Speed
At sample rates > 48 kHz, it may be necessary to synchronize two devices with a fraction of the actual
sample rate:
Sample Rate
Word Clock Full Speed (default)
Word Clock Single Speed (option)
88.2 kHz
88.2 kHz
44.1 kHz
96 kHz
96 kHz
48 kHz
176.4 kHz
176.4 kHz
44.1 kHz
192 kHz
192 kHz
48 kHz
To set the Word Clock output to single speed on the device:
RME 12Mic User’s Guide
11.4. Set Word Clock Output to Single Speed |
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