Terratec CLOCKWORK QR User Manual

Quick reference (English)

Version 1.0, Status 01.09.00

SyncXtension EWS ClockWork (English) 1

CE declaration

We:

TerraTec Electronic GmbH, Herrenpfad 38, D-41334 Nettetal, Germany

hereby declare that the product:

Sync Xtension EWS ClockWork

to which this declaration refers complies with the following standards or standardizing documents:

1. EN 55022

2. EN 50082-1

The following are the stipulated operating and environmental conditions for the said compliance:

Residential, business and commercial environments and small-company environments.

This declaration is based on:

test report (s) of the EMC testing laboratory

TerraTec® ProMedia, SoundSystem Gold, SoundSystem Maestro, SoundSystem Base1, SoundSystem

®

DMX, AudioSystem EWS

64, AudioSystem EWS88, XLerate, XLerate Pro, Base2PCI, TerraTec 128iPCI,

TerraTV+, TerraTV Radio+, TerraTValue, WaveSystem, TerraCAM USB, MIDI Smart and MIDI Master Pro

®

are trademarks registered by TerraTec

Electronic GmbH Nettetal.

In most cases, the designations used in this manual for software and hardware are also registered
trademarks and are thus subject to the relevant regulations.

®

©TerraTec

Electronic GmbH, 1994-2000. All rights reserved (01.09.00).

Meticulous care has been taken in the preparation of all text passages and illustrations in this manual.
TerraTec Electronic GmbH and its authors, however, accept no liability, legal or otherwise, for errors or
the consequences of such errors. We reserve the right to technical modifications.

All text passages in this documentation are copyright. All rights reserved. No part of this documentation
may be reproduced in any form whatsoever, by photography, microfilming or other process or rendered
into a language/form usable by computers without the prior written consent of the authors. All rights for
use and propagation by presentation, radio and television are also reserved.

2 SyncXtension EWS ClockWork (English)

Preface

Great, that you have expanded your TerraTec AudioSystem with the capacity to process Word­Clock and SuperClock Signals. The EWS ClockWork not only allows you to externally synchro­nise an EWS with EWS
entire digital studio. Moreover, the EWS ClockWork can be adjusted to a wide variety of de­mands. How to adjust the special settings of this module and how all other components are to
be connected will become clear from the following chapters.

®

-Connect connection, it can also function as the central clock for your

Scope of delivery

The kit is comprised of

• the EWS ClockWork Module

• 5-pole connection cable  5-pole

• 3-pole connection cable  3-pole

• Registration documents

• Service information

SyncXtension EWS ClockWork (English) 3

The Design of the EWS ClockWork

m

l

k

j

g

f

e

h

d

n

i

d WordClock / SuperClock IN

e WordClock / SuperClock OUT

f LED, Input Status - WordClock

g LED, Input Status - SuperClock

h DIP switches

i Jumper 3 (J3), connection for EWS88 Master Sync IN

j Jumper 4 (J4), connection for EWS88 Slave 1 Sync IN

k Jumper 5 (J5), connection for EWS88 Slave 2 Sync IN

l Jumper 6 (J6), connection for EWS88 Slave 3 Sync IN

m Jumper 7 (J7), connection for EWS88 Master Sync OUT

n LED, EWS ClockWork operation mode

4 SyncXtension EWS ClockWork (English)

WordClock or SuperClock?

The serial transfer of digital audio data was already standardised by the AES (Audio Engineer­ing Society) in the mid-eighties and dictates as such a 64 bit basic word width per stereo sam­ple. Irrespective of the original word width (e.g. 16 bit) 32 bit is to be transferred for each mono
sample. A WordClock Generator produces per stereo sample, a cycle whose frequency corre­sponds exactly with the actual sample frequency. A SuperClock Generator transmits the signal
in a 256 times higher clock frequency (256 FS). The question of which clock is the most suited
one has been under frantic discussion for some time now, but one must keep in mind that a
SuperClock can be a maximum of over 24MHz (256 x 96KHz) and may distort other equipment
in the studio. In addition, modern digital equipment also features high-quality error correction
components by means of which any disadvantage of a slower WordClock can be compensated.

The connections can be made by means of ordinary coaxial 75 Ohm antenna cable, or alterna­tively you can buy ready-made standard cables in the specialised music stores. In particular
for use in the "gig scene" you are advised to use highly flexible and technically robust cables.

SyncXtension EWS ClockWork (English) 5