SoundPals™ ADAT-4 User Guide ADAT-to-AES converter
Printing History SoundPals™ ADAT-4 ADAT-to-AES converter Rev. N/C March 2007 Printed in U.S.A. Part Number 08-2054-00 The information contained in this guide is subject to change without notice or obligation. Copyrights and Trademarks © 2005 GRAHAM-PATTEN SYSTEMS, INC. Contents of this publication may not be reproduced in any form without the written permission of Graham-Patten. Reproduction or reverse engineering of copyrighted software is prohibited.
Table of Contents Table of Contents ii Introduction 1 What are SoundPals?.............................................................................................................. 1 Documentation Conventions.................................................................................................... 1 Signals and Values .................................................................................................................. 1 Warnings..................................................
Introduction What are SoundPals? Each Graham-Patten SoundPals module is essentially a digital audio building block that can be used independently, or interconnected to perform more advanced mixing and audio processing functions. SoundPals can be used in both standalone and system configurations: • In a “standalone” configuration, each SoundPals module is designed to perform a specific audio processing function such as ADAT-to-Analog conversion.
Unpacking and Inspection When you receive your SoundPals modules, inspect the cartons for signs of damage. Contact your dealer and the shipper immediately if you suspect any damage has occurred during shipping. Check the contents of each box to be sure that all parts are included. If any items are missing, contact your dealer immediately. Power Supply Note SoundPals are delivered with a power connector only. A separate power supply must be obtained.
ADAT-4 About the ADAT-4 The SoundPals ADAT-4 is an ADAT-to-AES converter that separates a single 8-channel ADAT data stream on optical fiber into four AES output audio pairs, on either balanced or coaxial cable. AES outputs are synchronous with the ADAT input. The unit offers the following features: • • • • Synchronizing connector for a silent AES3id or word clock output. This output can be used to synchronize other SoundPals to the ADAT data stream.
The figure below illustrates the ADAT-4’s rear panel: 2 3 4 5 6 AES OUT 1 AES OUT 2 AES OUT 3 AES OUT 4 MADE IN THE USA 1 MODEL A +6V 200mA 1) ADAT-4 Model— the “A” model has AES3 outputs (XLR), and the “B” model has AES3id outputs (BNC). 2) Power Connector — accepts the power jack from the 6 VDC power supply. Refer to “External Power” for more information regarding external power.
ADAT-4 Operation This section includes instructions for operating the ADAT-4. See the “ADAT-4 Specifications” section for a channel routing table. Operating procedures for the ADAT-4 are simple: • • • Connect the ADAT input from the desired ADAT source. Connect AES outputs to the desired destinations.
• ADAT Bridge to AES Routing System In this application, the ADAT-3 and ADAT-4 combine to provide a bridge in and out of an AES routing switcher. ~ The ADAT-4 accepts an optical input from a source ADAT device (such as a workstation or ADAT recorder), and provides four AES outputs that feed the routing switcher. ~ The ADAT-3 accepts four AES inputs from the routing switcher, and provides an optical ADAT output for routing to ADAT destinations.
ADAT-4 Internal Jumpers This section provides information about the ADAT-4’s internal jumpers and switches. NOTE For detailed instructions on opening and closing the ADAT-4, see “Inside the Module.” The figure below shows the ADAT-4’s internal jumper locations: GRAHAM-PATTEN SYSTEMS GRASS VALLEY, CALIFORNIA Made in U.S.A. ADAT-4 04-0236- J2 J5 SW2 Word Clock Polarity Jumper • 20/24 Bit Jumper J2 is the 20/24 Bit jumper.
SW2 is the Status Dip Switch which is used to set the channel status on all AES outputs, including the SYNC output (provided that the Sync Switch is set to AES). The switch is an eightposition DIP, of which five switches are active. 1 (closed) top position 1 2 3 4 5 6 7 8 0 (open) bottom position OPEN For all switches: ~ ~ ~ • 0 is open 1 is closed The default setting is all 0’s Switches 1 and 2 determine the Emphasis. Function • 0 0 None 1 0 50/15uS 0 1 J.
ADAT-4 Troubleshooting The table below lists ADAT-4 problems and solutions. Problem No output. Outputs are all silent. Input ERROR. Procedure • • • • • • NOTE Check Power by Green LED. Check Input ERROR LED. Verify that the source is not silent. Unplug the fiber cable and check for visible red light (this is not harmful). If no light, unplug the cable from the source and check for visible red light from the transmitter. Check for possible break in the fiber.
Audio Specifications (continued) AES3ID Synchronization Output Amplitude Rise time Output impedance 1 ±0.2 V p-p 37 ±7 ns 75Ω >15 dB (0.1–6 MHz) <50 mV Return loss DC on output Word Clock Synchronization Output Amplitude VLO <0.5 V at IOUT = -5 mA Waveform Phasing Square-wave at Fs + edge coincident with audio sampling instant. Use jumper J5 to invert. VHI >4.
Inside the Module In This Section This section provides instructions for opening and closing the SoundPals SDDM-8 module to gain access to the internal circuit board. NOTE The internal circuit board should only be removed from the module if you want to change the jumpers. Before You Begin Check the following items before opening the module and attempting to remove the internal circuit board: If required, remove the SoundPals module from the rack tray.
External Power About Power Supplies An external power supply conforming to the specifications listed in the following “Power Supply Specifications” section must be used to guarantee that published SoundPals performance figures are met. Any power supply meeting these specifications will supply adequate power for a single SoundPals module. Although the specification is written for power supplies running from AC line inputs, DC (battery) sources may be used if they meet all of the listed requirements.
