Using Higher Sampling Rates Disables Some Programs; Digital Output - Eventide Eclipse User Manual

you have chosen an external clock source (
will also light the LED that most closely matches the de-
tected rate
.
blink)
Note: If there is no signal at the digital input or if the signal is absent or corrupt, the
LED and rate LED will blink and the Eclipse will switch to the internal rate closest to the last
valid external rate.
Eclipse features a sample rate converter (SRC) on its digi-
SR-CNV
tal input, which allows it to accept a digital signal whose
sample frequency differs from its main clock source. This is mainly used to accept a signal at
say 44.1kHz (from a CD player, for example) while operating at 48 or 96kHz. However, it
can be used for 48kHz to 96khz conversion, or any other mixed-rate application.
Note that the SRC tends to require a higher quality input signal for correct operation. For
this reason, the SRC should be disabled (set to

Using Higher Sampling Rates Disables Some Programs

Higher sampling rates (greater than 55kHz) may yield higher fidelity, but some programs won't function at
higher rates
(higher rates require twice the processing power and twice the delay capability!)
You can tell if a preset can run at higher sampling rates by looking for the
96
icon between the preset's number and name. In some cases there are
two versions of the same program, one for high rate operation, and one for low rate operation, for example,
and .
Loop10 Loop20
It will not be possible to select a high sample rate if a program without the
Eclipse will refuse (i.e., not lock to) an incoming digital signal with a sample rate greater than 50kHz.
Similarly, if a sample rate above 50kHz is selected, and you try to load a program without the
will complain vociferously and will not let you do so.
Things would be simpler if we only used 96kHz capable presets, but then you would be paying for a lot of
processing power, half of which would be wasted at 48kHz.
The XLR, RCA, and optical digital outputs will all output digital audio all the time, and will all output the
same protocol
(with the exception of the optical output set to ADAT)
most "important" output or base your choice on the requirement of the device you're connecting to. The
sampling rate of the output audio is set at
By pressing
SETUP DIG-OUT FORMAT (CS-TYPE)
the Pro (professional) or the
mally, you will set this to
send, or Cns if the RCA or optical outputs are your most important sends
(ADAT output is different and is addressed below)
By changing SETUP DIG-OUT FORMAT (EMPHASIS)
output audio. If you've never heard of "emphasis," leave it
an outmoded "feature" of older A/D and D/A technology that filters the digital audio to make the best use of available headroom. However, few devices
use emphasis these days, so you probably want to leave it off unless you have good reason to do otherwise. Changing the emphasis flag does NOTHING
Eclipse User Manual
Eclipse User Manual
(signals that are way off frequency will cause the nearest LED to

Digital Output

SETUP DIG-IN (CLOCK)
Cns (consumer) protocol for output. Nor-
if the XLR output is your most important
Pro
.
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will light). It
EXT
) when not needed.
off
.
! Therefore, you must choose the protocol for your
as described above.
, you can select either
from off to on , you can add emphasis flags to your
and skip the rest of this paragraph!
off
96
icon is currently loaded and
9
icon, Eclipse
6
Emphasis is
Release 2.500
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