If you wish to use the S/PDIF input, simply dou-
ble-click on the "302" in the devices menu. The
Device Synchronization Mode window that will
then appear allows users to select the External
Clock (Ext. S/PDIF Input) as the default clock
source.
Also in Synchronization, users are also able to
change between automatic and manual sam-
pling rate settings. When the sampling rate is
manually set, users can select between sam-
pling rates of 44.1, 48.0, 88.2, 96.0, 176.4 and
192 kHz per second. Many devices have sam-
pling rates that do not surpass 44.1 kHz per sec-
ond, therefore, when using multiple digital de-
vices, users are advised not to exceed this level
unless they are sure the secondary device's
sampling rate can.
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 Firefly
302 PLUS. If the depth is set too high, an obvi-
ous 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 la-
tency, while still maintaining an optimal perfor-
mance. The default settings are ideal for most
computers.
6
The ASIO Buffer Depth is adjustable between 4
and 40 milliseconds. This allows users to ad-
just the latency of the stream received by ASIO
driver-based software (including Steinberg Cu-
base LE).
The WDM (Windows Driver Model) Sound Buffer
Depth is adjustable between 4 and 40 millisec-
onds. 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
the FireWire connection has been interrupted
can be viewed.
Streams
In the Streams section, the Firefly 302 PLUS
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
.
Firefly 302