A U D - D 2 A
User Manual
Version 1.4
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Doremi Cinema LLC
Table of Contents
1 INTRODUCTION...........................................................................................................................5
1.1 PURPOSE.................................................................................................................................. 5
1.2 PRESENTATION........................................................................................................................... 5
1.3 CONTACT.................................................................................................................................. 5
2 AUD-D2A PRESENTATION......................................................................................................... 6
2.1 OVERVIEW.................................................................................................................................6
2.2 AUD-D2A FRONT PANEL........................................................................................................... 6
2.3 AUD-D2A REAR PANEL............................................................................................................. 6
3 REAR PANEL CONNECTIONS....................................................................................................8
3.1 AES/EBU DIGITAL AUDIO IN DB25-F CONNECTOR PIN-OUT..........................................................8
3.2 ANALOG AUDIO OUT DB25-F CONNECTOR PIN-OUT......................................................................9
4 AUD-D2A CONNECTIONS TO DCP-2000 AND CINEMA ANALOG AUDIO PROCESSOR.... .10
4.1 CONNECTIONS SCHEMATIC......................................................................................................... 10
4.2 CONNECTIONS PROCEDURE....................................................................................................... 11
4.2.1 Step 1: Connecting the AUD-D2A Analog Audio............................................................11
4.2.2 Step 2: Connecting the AUD-D2A Digital Audio.............................................................12
4.2.3 Step 3: Connecting the AUD-D2A Power Cable.............................................................12
5 DOCUMENT REVISION HISTORY.............................................................................................13
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Software License Agreement
The software license agreement can be found at the following location:
http://www.doremilabs.com/support/cinema-support/cinema-warranties/
Hardware Warranty
The hardware warranty can be found at the following location:
http://www.doremilabs.com/support/cinema-support/cinema-warranties/
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1 Introduction
1.1 Purpose
This document presents the AUD-D2A digital to analog audio converter. It also provides
explanation concerning the AUD-D2A connections between a DCP-2000 Digital Cinema Server
and an external Cinema Analog Audio Processor.
1.2 Presentation
This document is structured according to the following sections:
• Section 1: Introduction – Overall presentation of the document
• Section 2: AUD-D2A Presentation – Usage and characteristics of the AUD-D2A product
• Section 3: Rear Panel Connections – Presentation of the AUD-D2A rear panel connections
• Section 4: AUD-D2A Connections to DCP-2000 and Cinema Analog Audio Processor –
Description of the connection steps
• Section 5: Document Revision History
1.3 Contact
If in need of help or assistance, please contact Doremi Cinema Technical Support at:
USA
24/7 Technical Support line: + 1-866-484-4004
Technical Support Email: support@doremicinema.com
Europe
24/7 Technical Support line: + 33 (0) 492-952-847
Technical Support Link: http://support.doremitechno.org/ticketing
Japan
Technical Support line: + 044-966-4855
Technical Support Email: support@doremilabs.co.jp
Australia ~ China ~ India ~ Indonesia ~ Korea ~ Malaysia ~ New Zealand ~ Philippines ~
Singapore ~ Taiwan ~ Thailand
Technical Support Email: supportasia@doremilabs.com
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2 AUD-D2A Presentation
2.1 Overview
AUD-D2A is an 8 channels digital-to-analog audio converter. It has been designed to interface the
DCP-2000 (Digital Cinema Server) digital audio output to Analog Audio Processors for theaters
without a Digital Cinema audio processor.
It accepts digital audio format signal (AES/EBU) as an input and outputs the same signal converted
into analog audio format. The product ships with unbalanced output only. The unit has been
designed to be rack-mounted. Its dimension is 1RU. It can be mounted either close to the DCP2000 or close to the Cinema Analog Audio Processor.
2.2 AUD-D2A Front Panel
Its front panel has 2 LEDs:
• one green LED showing when the unit is ON
• one yellow LED showing the audio activity.
Yellow Activity LED
Figure 1: AUD-D2A Front Panel
Green Power LED
2.3 AUD-D2A Rear Panel
The back panel allows you to connect the unit to the power outlet (100-240VAC / 50-60Hz). It has
a power switch for turning the unit ON and OFF.
On the back panel, two DB25-F connectors are available:
• one for the Digital Audio Input
• one for the Analog Audio Output
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Power switch
Power connector
Analog Audio Output
Figure 2: AUD-D2A Rear Panel
Digital Audio Input
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3 Rear Panel Connections
3.1 AES/EBU Digital Audio In DB25-F Connector Pin-Out
The digital Audio Input connector pin-out complies with the AES/EBU standard and is illustrated
below:
Pin # Signal Description Pin # Signal Description
1 no connection 14 no connection
2 no connection 15 no connection
3 no connection 16 no connection
4 no connection 17 no connection
5 no connection 18 no connection
6 no connection 19 no connection
7 Ch 7 & 8 plus 20 Ch 7 & 8 minus
8 Ch 7 & 8 ground 21 Ch 5 & 6 plus
9 Ch 5 & 6 minus 22 Ch 5 & 6 ground
10 Ch 3 & 4 plus 23 Ch 3 & 4 minus
11 Ch 3 & 4 ground 24 Ch 1 & 2 plus
12 Ch 1 & 2 minus 25 Ch 1 & 2 ground
13 no connection
DCI Channel Map:
Channel 1: L (screen – left)
Channel 2: R (screen – right)
Channel 3: C (screen – center)
Channel 4: LFE (screen – low frequency
effects subwoofer)
Channel 5: Ls (surround – left wall)
Channel 6: Rs (surround – right wall)
Channel 7: Lc (screen – mid left to center)
Channel 8: Rc (screen – mid right to center)
The cable that is used to interconnect the DCP-2000 to the AUD-D2A is one-to-one pin compatible.
A picture of the DB25-F input connector is provided below:
Pin 1
Pin 25
Figure 3: AUD-D2A Digital Audio Input Connector (DB25-F)
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3.2 Analog Audio Out DB25-F Connector Pin-Out
The DB25-F connector for the analog audio output has the following pin-out (unbalanced
configuration only):
Pin # Signal Description Pin # Signal Description
1 Ch 8 plus 14 no connection
2 Ch 8 ground 15 Ch 7 plus
3 no connection 16 Ch 7 ground
4 Ch 6 plus 17 no connection
5 Ch 6 ground 18 Ch 5 plus
6 no connection 19 Ch 5 ground
7 Ch 4 plus 20 no connection
8 Ch 4 ground 21 Ch 3 plus
9 no connection 22 Ch 3 ground
10 Ch 2 plus 23 no connection
11 Ch 2 ground 24 Ch 1 plus
12 no connection 25 Ch 1 ground
13 no connection
A picture of the DB25-F output connector is provided below:
DCI Channel Map:
Channel 1: L (screen – left)
Channel 2: R (screen – right)
Channel 3: C (screen – center)
Channel 4: LFE (screen – low frequency
effects subwoofer)
Channel 5: Ls (surround – left wall)
Channel 6: Rs (surround – right wall)
Channel 7: Lc (screen – mid left to center)
Channel 8: Rc (screen – mid right to center)
Pin 1
Pin 25
Figure 4: AUD-D2A Analog Audio Output Connector (DB25-F)
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4 AUD-D2A Connections to DCP-2000 and Cinema
DB25-F
DB25-F
ANALOG AUDIO OUTPUT
DIGITAL AUDIO INPUT
Power
connector
ON
POWER
OFF
100-240V
0.5A MAX
50-60Hz
DCP-2000
Cinema Analog
Audio Processor
DB25-F
DB25-F
ANALOG AUDIO INPUT
Cable 2: DCP-2000 Analog OUT to Cinema
Audio Processor IN SINGLE LEG
Cable 1: DCP-2000 AES OUT
to AUD-D2A AES IN
AES OUTPUT
Power Outlet
100-240V AC,
50-60 Hz
Power cord
AUD-D2A
DCP-2000 AES OUT
AUD-D2A AES IN
AUD-D2A Analog OUT
Cinema Processor Analog IN
Analog Audio Processor
This section presents the overall schematic of the AUD-D2A connections between a DCP-2000
and an external Cinema Analog Audio Processor.
4.1 Connections Schematic
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Figure 5: AUD-D2A to DCP-2000 Connections Schematic
Doremi Cinema LLC
4.2 Connections Procedure
This section presents the procedure to follow, step by step, to connect the AUD-D2A between a
DCP-2000 and an external Cinema Analog Audio Processor.
4.2.1 Step 1: Connecting the AUD-D2A Analog Audio
Connect the AUD-D2A to the Cinema processor using the DCP-2000 Analog Out cable as
illustrated below:
“DCP-2000 Analog Out to
Cinema Processor Analog In
Single LEG” Cable
Figure 6: AUD-D2A Rear Panel – DCP-2000 Analog Cable Connection
“DCP-2000 Analog Out to
Cinema Processor Analog In
Single LEG” Cable
Figure 7: Cinema Processor – DCP-2000 Analog Cable Connection
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4.2.2 Step 2: Connecting the AUD-D2A Digital Audio
Connect the DCP-2000 to the AUD-D2A using the DCP-2000 AES Out Cable as illustrated below:
“DCP-2000 AES out to AUD-
D2A AES In” Cable
Figure 8: DCP-2000 Rear Panel – AES Cable Connection
Power button in ON
position
Power Cable
“DCP-2000 AES out to
AUD-D2A AES In” Cable
Figure 9: AUD-D2A Rear Panel – AES Cable Connection
4.2.3 Step 3: Connecting the AUD-D2A Power Cable
Plug the power cable into the AUD-D2A and power it ON by putting the power switch in the ON
position as illustrated in Figure 9 above. The power LED of the front panel should light ON (green
LED). If any activity is detected, the “active LED” (yellow LED) should be lighted – see Figure 1.
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5 Document Revision History
Date Version Description
03/07/2008 1.0 First version.
08/07/2008 1.1 Audio output revised for default unbalanced
configuration.
07/15/2010 1.2 Balanced output option not supported anymore.
07/20/2012 1.3 Logo updated and contact information added.
10/19/2012 1.4 Korean KC Mark related page added.
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