Alesis EC-2 owner manual

EC-2

96kHz Sample Rate Upgrade

A/D and D/A Converter Cards

for the ADAT HD24 Hard Disk Recorder

OWNER’S MANUAL

VERSION 1.0

APPLIES TO ADAT HD24 SOFTWARE VERSION 1.05 AND ABOVE

Contents

Main Page appendix A EC-2 96kHz Upgrade Cards Table of Contents Specifications......................................................... 13 Index A-2 Important Safety Instructions Safety symbols used in this product CE Declaration of Conformity About the EC-2 Installing the EC-2 into the HD24 Precautions Packing List Overview Tools required Prepare to install: Remove the existing converter PCBs and cables: HD24 interior with original A/D/A PCBs Drive 1 Drive 2 Install the new EC-2 PCBs HD24 with EC-2 installed A-6 Connect the PCBs To test for proper installation Using the EC-2 About 96kHz/88.2kHz Sampling Operation Synchronizing at high sample rates: Synchronizing two HD24s at different sample rates: Inputs and Outputs A-8 About the EC-2s audio performance The converter defines the sound When to use 88.2/96 kHz Why 44.1/48 kHz? The case for a higher sampling rate Can you hear it? A-10 Extending the frequency range of other studio equipment Using the HD24/EC-2 with computer workstations and digital mixers High sample rate operation Latency A-12 Using the HD24/EC-2 with the Alesis AI-4 AES/EBU Interface Using the AI-4 at 88.2/96 kHz Word clock Specifications For the Alesis HD24 with EC-2 96 kHz Sample Rate Upgrade A/D and D/A Converter Boards: AUDIO INPUT AUDIO OUTPUT AUDIO PERFORMANCE