Behringer B-Control-Audio BCA2000, Руководство пользователя

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B-CONTROL AUDIO BCA2000
USB 2.0:
These issues were resolved with the next USB standard,
USB 2.0, due to a data transmission speed of 480 Mbps. This
new standard is every bit as powerful as the FireWire
®
or IEE1394
interface, and enables the simultaneous transmission of more
than 16 audio channels to and from a computer with full
24-bit/96 kHz support.
Full-Speed USB & High-Speed USB:
Unfortunately, several manufacturers have begun referring to
both the older, slower USB 1.1 interface and the newer, much
faster USB 2.0 as USB 2.0. This causes a great deal of confusion
and often misleading. A printer, for example, that claims to have
a USB 2.0 interface, will not necessarily be able to process data
at 480 Mbps.
The new official distinction between the two standards is
defined as follows:
1) Full-Speed USB (the “old” USB 1.1) with 12 Mbps and 2)
High-Speed USB (introduced as USB 2.0) with 480 Mbps.
The suffixes “1.1” and most notably “2.0” should preferably
not be used anymore, since—due to misuse—they only cause
confusion and provide no real information about the interface’s
data transmission rate.
The BCA2000 supports both USB formats, Full-Speed and
High-Speed, and automatically detects which format your
computer uses, indicating this value both on the appropriate
LEDs on the BCA2000 and in the control panel software.
Wordclock
See
→
Clock and
→
Sync.
6.2 Audio connections
You will need many different types of cables for various
applications. The following illustrations show how these cables
should be wired. Please always use high-quality cables.
The B-CONTROL’s analog audio inputs are electronically
balanced to avoid hum problems.
Of course, you can also connect unbalanced equipment to the
balanced inputs/outputs of your BCA2000: either use mono plugs
or bridge the ring to the sleeve on TRS connectors (on
XLR connectors, bridge pin 1 to pin 3).
Fig. 6.1: XLR connections
Fig. 6.2: 1/4" TS connector
Fig. 6.3: 1/4" TRS connector
Fig. 6.4: 1/4" TRS connector for insert cables
6.3 Digital inputs and outputs
The B-CONTROL features coaxial and optical digital interfaces
that allow two-channel transmission of signals with a resolution
of up to 24 bits. The sample rate is not fixed and can be freely
selected in your host application. Sample rates of 44.1, 48 and
96 kHz are typical. Both interfaces support AES/EBU and S/PDIF
formats. Additionally, the optical interface (TOSLINK) enables
four-channel transmission in the ADAT ® S/MUX format
(at 96 kHz) as well as the standard eight-channel ADAT
®
format
(at 44.1 or 48 kHz). The DOLBY
®
DIGITAL and DTS
®
formats are
also supported on the outputs (both optical and coaxial), provided
your computer software (e.g. software DVD player) reproduces
the respective format.
6. CONNECTIONS AND FORMATS