Owner`s manual

WDM console – all products

Layla24, Mona, Gina24 and Mia are designed to work alongside other audio

equipment. If you are planning on using your card with other audio equipment,

please note the following:

The Windows drivers included in this package support multiple Echo cards within

the same system. In addition, your new Echo hardware will operate alongside

other Echo products. Echo hardware can also peacefully coexist with audio

equipment from other manufacturers, but be aware that operating alongside

another product is not the same as operating with it. In order for accurate

synchronization to occur, the other audio product(s) in your system must support a

synchronization mode that is compatible with your particular Echo hardware.

Without such synchronization, the individual pieces of equipment will act

independently of each other. This scenario may be fine for some musical

applications; however, it is not appropriate for situations where sample-accurate

synchronization is required or that will be affected by clock drift.

Let’s take a brief look at the various synchronization types.

Word Clock – This is a synchronization signal that connects to the BNC

connector labeled Word Clock on Layla24/Mona’s back panel. This

synchronization clock runs at the selected sample rate. Think of it as a kind of

electronic metronome, which clicks back and forth at the digital sample rate. It is

one of the most widely used forms of synchronization in digital audio.

Layla24/Mona is always generating Word Clock on its Word Clock output BNC

connector. Although it can generate Word Clock at any sample rate it is set to,

Layla24/Mona can only sync to Word Clock if the master device is set to a sample

rate between 30kHz and 100kHz. Otherwise you will get noise and/or loss of

sync.

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/Mona/Gina24) The Alesis ADAT optical interface can send

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