RME Audio Babyface Pro, Руководство пользователя

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User's Guide Babyface Pro © RME 25
10.3 Known Problems
If a computer does not provide sufficient CPU-power and/or sufficient USB-bus transfer rates,
then drop outs, crackling and noise will appear. Such effects can be avoided by using a higher
buffer setting/latency in the Settings dialog of the Babyface Pro. Furthermore PlugIns should be
deactivated temporarily to make sure they do not cause these problems.
More information can be found in chapter 26.3.
Another common source of trouble is incorrect synchronization. ASIO does not support asyn-
chronous operation, which means that the input and output signals not only have to use the
same sample frequency, but also have to be in sync. All devices connected to the Babyface Pro
must be properly configured for Full Duplex operation. As long as SyncCheck (in the Settings
dialog) only displays
Lock
instead of
Sync
, the devices have not been set up properly!
The same applies when using more than one Babyface Pro - they all have to be in sync. Else a
periodically repeated noise will be heard.
The Babyface Pro supports
ASIO Direct Monitoring
(ADM). Please note that not all programs
support ADM completely or error-free. The most often reported problem is the wrong behaviour
of panorama in a stereo channel. Also try to avoid setting the TotalMix FX hardware outputs
(third row) to mono mode. This will most likely break ADM compatibility.
In case of a drift between audio and MIDI, or in case of a fixed deviation (MIDI notes placed
close before or behind the correct position), the settings in Cubase/Nuendo have to be
changed. At the time of print the option 'Use System Timestamp' should be activated. The
Babyface Pro supports both MME MIDI and DirectMusic MIDI. It depends on the used applica-
tion which one will work better.
11. Using more than one Babyface Pro
The current driver supports up to three RME USB devices. All units have to be in sync, i.e. have
to receive valid digital sync information.
•
If one of the units is set to clock mode Master, all others have to be set to clock mode
Slave, and have to be synced from the master by feeding ADAT or SPDIF. The clock
modes of all units have to be set up correctly in their Settings dialog.
•
If all units are fed with a synchronous clock, i.e. all units show
Sync
in their Settings dialog,
all channels can be used at once. This is especially easy to use under ASIO, as the ASIO
driver presents all units as one.
Note: TotalMix FX is part of the hardware of each RME unit. Up to three mixers are available, but
these are separated and can't interchange data. Therefore a global mixer for all units is not
possible.
In real-world an operation of more than one Babyface Pro seems not very useful. The second
unit must be synchronized using the optical input. The result is an extension by only 4 analog
record and 4 analog playback channels (plus 8 digital via ADAT Out). It makes much more
sense to directly connect an 8-channel converter to the ADAT I/O of one Babyface Pro, adding
full 8 analog channels of record and playback.
On the other hand the second unit can even be used stand-alone, without any USB connection,
and might serve as an emergency replacement in case the main unit fails.