MIDEX-8
English – 37
ENGLISH
You can obtain information about the latest driver versions in the world
wide web under www.steinberg.net or from your national Steinberg dis-
tributor.
The bandwidth
available on the
USB bus
Each USB device that is connected to a USB bus consumes a certain
fixed percentage of the data transfer bandwidth that is available on
the bus. A USB keyboard, mouse and/or hub can easily consume 10
percent of the bandwidth provided by the USB bus that they are
connected to.
All other USB devices that are connected to the same USB bus will
share the 90 percent bandwidth still available.
The USB hub Please note that a USB hub simply distributes the available
bandwidth of the USB bus that it is connected to. It does not
increase the available data transfer bandwidth. It only provides
additional physical USB sockets, which all share the bandwidth
provided by the USB controller chip.
The number of
USB controller
buses
Modern Macintosh desktop computers provide separate controller
chips for each of their two USB bus connectors. Each of the two
buses does therefore operate at the full USB bandwidth.
On the PC, one controller chip is sometimes connected to several
USB sockets. This means that such sockets must share the available
USB bandwidth provided by that one controller chip. This does of
course decrease the bandwidth available for each individual socket.
Fortunately, an increasing number of PC board manufacturers now
provide an adequate number of controller chips for the available
USB sockets.
The operating
system used (PC)
The current MIDEX-8 driver versions let you use up to 8 MIDEX-8
devices on one computer (provided that the rest of the system can
cope with this number of units, see above).
Some Windows versions (98 SE, 2000, XP) use different driver
models. The number of MIDI ports that are made available by these
environments is limited (sometimes to only ten).
The Steinberg programmers have found ways to prevent these
limitations for Cubase VST 5.0 or later and Nuendo. Other
applications, however, are limited to the number of ports that the
operating system allows for (e.g. Windows 2000: ten MIDI ports,
Windows XP: 32 MIDI ports etc.).
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