RME Audio Digiface Ravenna, Руководство пользователя

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User's Guide Digiface Ravenna
© RME
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Buffer Size
The setting Buffer Size determines the latency between incoming and outgoing ASIO and WDM
data, as well as affecting system stability (see chapter 7.1).
USB Diagnosis shows specific USB transmission errors (CRC5, usually 0) and general errors. If
the unit detects a record or playback error the number shown will no longer be 0. An audio reset
is performed automatically. The counter is reset on start of playback/record. More information can
be found in chapter 25.1.
Sample Rate
Display of the currently active sample rate. Its setting / change takes place exclusively via the
RAVENNA Remote. Neither WDM nor ASIO programs can change the sample rate.
WDM Devices
Allows to freely set which I/Os are available as WDM devices, whether these are stereo or multi-
channel devices (up to 8 channels), and whether one or multiple of the currently active WDM
devices should have the
Speaker property. Digiface Ravenna provides a maximum of352 stereo
WDM devices, or 16 multichannel devices. More details are found in chapter 7.2.
Options
Word Clock In Term.
Checking this option terminates the word clock input internally with 75 Ohms.
MADI Coaxial
Defines the format of the MADI output signal. MADI can be a 56 or 64 channel signal. Sample
rates in Double Speed range (64/88.2/96 kHz) can be transmitted by the normal 48K Frame, or
using a native 96K Frame.
Channel 65
– 128
Determines the operation of the two BNC sockets. The BNC input and output can serve as word
clock or MADI I/O.
Ravenna : Uses all 128 USB channels. BNC therefore works as word clock I/O.
MADI : Transmits MADI I/O via channels 65-128, Ravenna uses 1-64. Word clock is not available,
because the two sockets are used for MADI coaxial.
Iso(chronous) Streaming (USB 3 only)
The Digiface Ravenna uses a special transmission mode with error correction in record mode. In
case the default mode does not work
Isochronous Streaming
can be tried. This is the standard’s
native mode for audio transmission and should work with any USB 3 controller. See also chapter
25.1.
Input Status
Word / MADI
Indicates presence of a valid signal at the word clock / MADI input (Lock, No Lock) and whether
the signal is synchronous (Sync). The third column shows the sample rate detected by the hard-
ware (coarse recognition, 32 kHz, 44.1 kHz, 48 kHz etc.), or the current channel format (56/64
channels).