Owner`s manual

Synchronizing multiple devices

S/PDIF – The Sony/Phillips Digital Interchange Format is a serial bit-

stream that has a clock signal embedded in the data stream. When recording

from an S/PDIF source, whether via optical cables or RCA cables, Echo

products will utilize the synchronization clock that is embedded in the

S/PDIF while it decodes the bitstream. Your Echo digital audio system can

only sync to S/PDIF clock if the master device is set to a sample rate

between 30kHz and 50kHz. Otherwise you will get noise and/or loss of

sync.

Note: When recording from a S/PDIF port, you must select S/PDIF as the

input clock. For greater flexibility, this is not done automatically. If you

find that your S/PDIF recordings contain pops or skips, be sure that you

have selected S/PDIF as your input clock.

ADAT – (Layla24/Gina24) The Alesis ADAT optical interface can send

and receive up to 8 simultaneous channels of digital audio data over fiber

optic cables. Unlike wire cables, fiber optic cables do not add noise or

interference. Layla24/Gina24 can send out (or “master”) ADAT clock as

well slave to it. If you want the interface to slave to an ADAT clock, just set

the input clock to the ADAT setting. Layla24/Gina24 can only sync to

ADAT clock if the master device is set to a sample rate between 40kHz and

50kHz. Otherwise you will get noise and/or loss of sync.

Note: To preserve the high audio quality of Layla24/Gina24’s converters it

is best to use the Internal input clock setting instead of synchronizing to an

external ADAT clock, which may add unwanted jitter to the signal.

Esync – Esync is a proprietary form of super clock that is used to

synchronize two or more Echo 24-bit products like Layla24, Gina24, and

Darla24. While Gina24 and Darla24 have both input and output connectors

on their PCI cards, Layla24 only has the Esync output connector.

Layla24/Gina24 are always transmitting Esync clock.

Mia and MiaMIDI do not support the Esync feature.

Synchronizing multiple devices