ESI Waveterminal U24 - Manual (Page 34)

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1. COAXIAL
Selects the Coaxial input port (RCA type S/PDIF format) on the
U24 as the digital input source.
2. OPTICAL
Selects the Optical input port (Tos-link, S/PDIF format) on the U24
as the digital input source.
C L O C K S O U R C E
Clock Source determines that U24 will reference to. Clock Source is the
time reference that determines precisely where each digital audio sample
begins and ends. Also, Clock Source in U24 control panel gives unique
function to the unit by selecting between two different sources.
1. INTERNAL
Selects U24’s on-board clock source as the reference. This is the
default mode for recording analog/digital audio through U24. Use
this mode if you are recording audio signal, playing back audio file
or using Real-time Sampling Rate Converter.
2. DIGITAL IN
Selects the digital audio input’s data as the clock source. Selecting
this mode causes U24 functions as an independent operation status
from computer. As you can see below, USB WAVE IN SELECT
section is disappeared and USB WAVE OUT of
ANALOG/DIGITAL OUT MIXER section is disabled.
In this mode, you can operate U24 as a signal converter, but U24 is
now completely separate from the computer. That means you
cannot record any input source to the computer and play any audio
source from the computer. However, any incoming audio signal
(either analog or digital) can be sent out through three different
output ports. Analog audio signal can be converted to digital audio
data, digital audio data would be converted to analog audio signal
and even digital audio data can be transferred to different connector
type.