RME Audio Babyface Pro, Руководство пользователя

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84 User's Guide Babyface Pro © RME
28. General
The Babyface Pro operates in three different modes:
driver-based USB 2 (Windows, Mac OS
X)
,
stand-alone
mode (without being connected to a computer), and
Class Compliant
mode,
mainly for iPad
®
connectivity. The latter describes a standard that is natively supported by oper-
ating systems like Mac OS X and Linux. No proprietary drivers are required, the device will be
directly recognized when CC mode is activated. Obviously, native features will be limited in
comparison to those provided by the RME driver set. For example there will be no (Total) Mix
and no effects.
Still the Babyface Pro provides the iPad with the professional analog I/O connections it lacks.
Superb microphone preamps, in addition to professional balanced line outputs, and a hi-power
headphone output that excels with both high and low impedance headphones. Plus gain and
level adjustments, SPDIF and ADAT input and output, at up to 96 kHz and 24 bit. And of course
a Sysex capable MIDI I/O.
In stand-alone mode the Babyface Pro needs to be powered. You have the choice to use USB
bus power by one of the numerous LiPo batteries with USB ports, sold as mobile power for your
smartphone and iPad, or an external power supply.
In Class Compliant mode connected to an iPad the Babyface Pro needs to be operated with an
external standard power supply, like the ones provided by RME ( 9 to 12 Volts and around 1 A).
For mobile applications please note that LiPo batteries are also available in advanced versions
which offer a 9 to 12 V output.
The Babyface Pro features no automatic power on/off due to its low idle power consumption of
below 3 Watts.
29. System requirements for iPad Operation
¾ Babyface Pro with external power supply and activated Class Compliant mode
¾ Any Apple iPad with at least iOS 5 or an iPhone with at least iOS 7
¾ Apple iPad Camera Connection Kit or Lightning to USB adapter
30. Class Compliant Operation
Activation of the Class Compliant mode: Hold down the
SELECT
and
DIM
button until the level
meters show
CC
, confirming CC mode is activated. CC mode is shown on the level meters on
every power-on of the unit. When nothing is shown then the unit is in PC mode.
Using an external power supply and USB disconnected the mode can be changed back and
forth between CC and PC. In this case PC is shown on the level meters after the reconfigura-
tion.
Connect the USB cable to the Camera Connection Kit/Lightning adapter. Start the iPad and
plug the Kit/adapter into the iPad’s socket. If everything works as expected, the unit will be used
for all audio I/O. Audio playback in iTunes will automatically be performed by the Babyface Pro,
using analog outputs 1/2, and - with Copy mode - active on phones outputs 3/4 and
SPDIF/ADAT.
Apps that support MIDI and are ready for Core MIDI (available since iOS 4.2) will offer dialogs
to select the desired Babyface Pro MIDI input and output.