Phonic Helix Board 24 Universal Manual Del Usuario página 15

Synchronization
In the Synchronization section, users can adjust the sampling
rate and other synchronization properties. Many of these
adjustable properties, as they are, are set for optimum
performance and, unless you are sure of what you need to
change, are probably best left alone.
First off, the synch mode can be altered, though making this
alteration is not recommended for novice users. The synch
mode is basically the way the computer determines what the '
clock source' (ie. device that your computer will use to determine
the timing of all digital signals received) will be. The default
setting for this feature is "CSP", meaning the Helix Board 24
Universal is the "master" clock source of the device. The other
options allow users to make the Helix Board 24 Universal follow
the "timing" of whichever device is the clock source. Having two
clock sources has the potential to cause undesireable results to
your audio, so it is best avoided. If the Helix Board 24 Universal
is the only piece of digital audio equipment attached to the
computer, there is no reason this option should be changed.
Users are also able to change between automatic and manual
sampling rate settings. When the sampling rate is manually set,
users can select between sampling rates of 44.1, 48.0, 88.2
and 96.0 kHz per second. Many devices have sampling rates
that do not surpass 44.1 kHz per second, therefore, when using
multiple digital devices, users are advised not to exceed this
level unless they are sure the secondary device's sampling rate
can match the sampling rate.
Settings
Users are able to adjust various buffer times in the Settings
section.
The Stream Buffer Depth is adjustable between 0.5 and 20
milliseconds. It adjusts the buffer used when streaming a signal
from the Helix Board 24 Universal. If the depth is set too high,
an obvious latency will become evident. If the depth is too low,
various clicks and pops may become obvious. It is best to set
the Stream Buffer Depth to a level that allows users to get the
lowest latency, while still maintaining an optimal performance.
The default settings are ideal for most computers.
Helix Board 24 Universal
The ASIO Buffer Depth is adjustable between 4 and 40
milliseconds. This allows users to adjust the latency of the
stream received by ASIO driver-based software (including
Steinberg Cubase LE).
The WDM (Windows Driver Model) Sound Buffer Depth is
adjustable between 4 and 40 milliseconds. This allows users
to adjust the latency of the stream received by WDM based
programs.
Also in this section, users are able to view their "drop out
statistics", where the number of times either the USB or
FireWire connections have been interrupted can be viewed.
Streams
In the Streams section, the Helix Board 24 Universal device
properties can be viewed. Each input and output stream can
be scrutinized, and the isochronous stream number and its
supported sampling rates can be viewed.
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