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Prism Sound ADA-8XR Module Reference

Multi-channel a/d d/a converter
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ADA-8XR Multi-channel A/D D/A Converter
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  • Page 1 ADA-8XR Multi-channel A/D D/A Converter Module Reference...
  • Page 2 Web: http://www.prismsound.com Or contact your local Prism Sound distributor as detailed on the website. Trademark Acknowledgements Digidesign, Pro Tools, Pro Tools 24|MIX, 888|24 I/O, Pro Tools|HD, 192 I/O, 96 I/O, SYNC I/O and DigiLink are trademarks of Digidesign, a division of Avid Technology Inc.

  • Page 3: Table Of Contents

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 Contents 1 Introduction ................5 2 Utility Module PREV039/3/1 ........... 6 Overview ........................6 Connection ........................6 Jumper Options......................7 3 Analogue Line Input Module PREV039/4/2......9 Overview ........................9 Fitting the Module......................9 Connection ........................9...
  • Page 4 Connecting a 16AD ADA-8XR as a 192 I/O ............35 7.7.4 Connecting a 16DA ADA-8XR as a 192 I/O ............36 7.7.5 Connecting an ADA-8XR to the ‘Legacy Port’ of a 96 I/O or a 192 I/O ....36 7.7.6 Synchronization ....................36 Controlling ADA-8XRs from the Pro Tools|HD User-Interface........37 7.8.1...
  • Page 5 Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 8.10.5 PCM to PCM (Synchronous Sample Rate Converter) Performance....48 8.10.6 DB25 Connector ....................48 9 FireWire I/O Module PREV039/10/1 ........49 Overview ........................49 Software Installation....................49 9.2.1 Windows PC Workstation ...................49 9.2.2...

  • Page 6: Introduction

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 1 Introduction This section of the manual gives details of the various module options for the ADA-8XR, including fitment and connection details, performance specifications and any module-specific menus and operations.

  • Page 7: Utility Module Prev039/3/1

    I/O slots. The Utility Module is fitted inside the ADA-8XR chassis, and is connected with flying leads to the Utility Panel on the right-hand side of the rear panel (when viewed from the back).

  • Page 8: Jumper Options

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 2.3 Jumper Options Various configurations of the Utility Module are possible by altering jumper positions, or selecting alternative headers for the connection of the Utility Panel connectors. The figure...
  • Page 9 Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 Jumpers and headers not listed in the above table are either for factory use only, or reserved for unspecified future use. These should remain in the state in which they left the factory.

  • Page 10: Analogue Line Input Module Prev039/4/2

    2, cold (-) on pin 3, with pin 1 connected to the cable screen. Unbalanced sources should still be connected to the ADA-8XR between pins 2 (+) and 3 (-) of its input XLR, since the input circuit is balanced. Pin 1 may be commoned to pin 3 depending on the topology of the driving circuit.

  • Page 11: Module Dependent Input Options Menus

    (this feature is primarily for use with the AI Line Trim menu, and is described below). NOTE for Pro Tools users: the ADA-8XR nomenclature for analogue line-up varies from that used by Pro Tools. Refer to section 6 for more details.

  • Page 12: Ai Line Trim Menu

    The level display shows peak amplitude in dBFS, i.e. dBs below digital full-scale. Although it should not be necessary to trim the ADA-8XR to produce accurate line-up levels (the ranges are set very accurately at the factory), line-up with other equipment can be achieved by connecting the external reference level to the ADA-8XR and adjusting the trims as follows.
  • Page 13 1kHz: >125dB 20Hz..20kHz: >117dB Group delay: (analogue input to AES3 output): 20/fs FFT plots made using Prism Sound dScope Series III at 997Hz, 256k points, Prism-7 window, 16 averages, at fs=96kHz, +18dBu=0dBFS line-up level. © Prism Media Products Limited, 2001-2005...

  • Page 14: Analogue Line Output Module Prev039/5/1

    Output line-up level (gain) is variable for each channel over the range 0dBFS=+5.0dBu to 0dBFS=+24.0dBu, in 0.5dBu steps plus a fine trim. Control of the output line-up level and trim is via menus which are present in the ADA-8XR Menu System if the Module is present.

  • Page 15: Ao Line Level Menu

    D/A converter (i.e. 0dBFS). The user may adjust the line-up level for each of the eight channels, over the range 0dBFS=+5.0dBu to 0dBFS=+24.0dBu, in 0.5dBu steps. NOTE for Pro Tools users: the ADA-8XR nomenclature for analogue line-up varies from that used by Pro Tools. Refer to section 6 for more details.
  • Page 16 1kHz: >115dB 20Hz..20kHz: >110dB Group delay: (AES3 input to analogue output): 49.5/fs FFT plots made using Prism Sound dScope Series III at 997Hz, 256k points, Prism-7 window, 16 averages, at fs=96kHz, +18dBu=0dBFS line-up level. © Prism Media Products Limited, 2001-2005...

  • Page 17: Aes3 I/O Module Prev039/6/1

    The AES3 I/O Module type PREV039/6/1 provides eight channels of digital audio input and output for the ADA-8XR on four AES3 carriers in each direction. The input and output sections of the module are completely independent - that is, they can be assigned to different Paths with different sample rates, Sync Sources and other options.

  • Page 18: Module Dependent Input Options Menus

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 5.4 Module Dependent Input Options Menus When an AES3 I/O Module is selected as an input to a Path, a DI AES Split96 menu for the relevant module slot becomes available in the Module Dependent Input Options section of the Menu System for that Path.

  • Page 19: Do Aes Channel Status Menu

    DI1 Sync I/P: A C1 C2 C3 C4 Auto Each AES3 I/O Module fitted to the ADA-8XR enables a DI Sync Input menu in the Module Dependent Preferences section of the Menu System. These Single Selection menus control which AES3 input carrier will be the Sync Source when a Path sourced from that module is set to sync from that ‘DI’...

  • Page 20: Split96 (Two-Wire) Operation

    Module in Split96 mode are mapped to channels one to four (out of eight). If the ADA-8XR is fitted with two AES3 I/O Modules, the user may enable Cascade Split96 mode. In this mode, whenever one of the modules is operating in Split96 mode (input OR output), the other module is automatically used to provide the other four channels, allowing a total of eight channels of Split96 interfacing.

  • Page 21: Channel Status

    AES3 or S/PDIF carrier - in most cases the audio path will not be disrupted even if the Channel Status information is incorrect or inconsistent. The only field in the input Channel Status respected by the ADA-8XR is the indication of pre- emphasis. If an input channel has pre-emphasis indicated, that indication will be passed through to the corresponding output channels for that path, although how that indication is acted upon depends on the type of output module.

  • Page 22: Specifications

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 Jumpers LK2, LK4, LK6 and LK8 set output impedance, and carrier voltage and grounding for output carriers one to four respectively. Jumpers LK3, LK5, LK7 and LK9 set the input impedance for input carriers one to four respectively.
  • Page 23 Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 Channel destination data Byte 10-13 NULL – no channel destination data Local sample address code Byte 14-17 Permanently zero (default) Time of day sample address code Byte 18-21...

  • Page 24: Pro Tools I/O Module Prev039/7/1

    The Pro Tools I/O Module enables the ADA-8XR to replace a Digidesign 888|24 interface, providing superior audio performance and extra features. To Pro Tools, an ADA-8XR fitted with a Pro Tools I/O Module looks exactly the same as an 888|24 and it can be remote-controlled in the same way.

  • Page 25: Module Dependent Preferences Menus

    6.6. 6.5 Module Dependent Preferences Menus If one or more Pro Tools I/O Modules are fitted to an ADA-8XR, the Workstation Remote Control menu becomes available in the ‘Module Dependent Preferences’ section of the Menu System.

  • Page 26: Synchronization

    Store, as detailed in section 6.6. The correct Store to choose for each ADA-8XR in the system depends only on whether it is to be the Master interface and, if so, whether or not it is to be locally or externally synchronized. This will usually be local, unless a USD (Digidesign ‘Universal Slave Driver’) is in use in which case it...

  • Page 27: Master

    888|24 do not affect the ADA-8XR because it has no equivalent function in some areas (e.g. variable meter gain). Unlike the 888|24, the ADA-8XR does not rely on remote control from the Pro Tools software - all the ADA-8XR’s parameters can be set from the front panel whereas the 888|24 has no front panel controls.

  • Page 28: Sync Source

    Also, the ADA-8XR front panel can select the source of all eight inputs to a path individually, whereas the Pro Tools software can only select by channel pair.

  • Page 29: Connecting Ada-8Xrs To Pro Tools

    888|24s. Refer to one of the sections below, depending on whether an 888|24 or an ADA-8XR is the Master interface. In general, it is usually better for an 888|24 to be the master, since ADA-8XRs are more tolerant of clock quality in the slave state than are 888|24s.

  • Page 30: Combining With 888|24 Interfaces, With 888|24 As Master

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 6.10.2 Combining with 888|24 interfaces, with 888|24 as master The figure below shows how to connect a combination of 888|24s and ADA-8XRs, where one of the 888|24s is connected as the Master interface (i.e. connected to the first Pro Tools card, or to the 'A’...

  • Page 31: Combining With 888|24 Interfaces, With Ada-8Xr As Master

    All the ADA-8XRs should be switched on (and loaded with the appropriate Factory Default Store, if not previously loaded) prior to starting the Pro Tools system. For the Master ADA-8XR, load ‘ProT:MASTER’, or ‘ProT:Ext MASTER’ if the USD is in use. For Slave ADA-8XRs, load ‘ProT:SLAVE’.

  • Page 32: Pro Tools Hd I/O Module Prev039/8/1

    The Pro Tools HD I/O Module provides eight channels of digital audio input and output for the ADA-8XR in a form compatible with Digidesign Pro Tools|HD workstations. The Pro Tools HD I/O Module enables the ADA-8XR to replace a Digidesign 96 I/O or 192 I/O interface, providing superior audio performance and extra features.

  • Page 33: Getting Started With Pro Tools|Hd

    Stores, as described in the following sections, automatically selects the correct states of these menus. If one or more Pro Tools or Pro Tools HD I/O Modules are fitted to an ADA-8XR, the ‘Workstation Remote Control’ and ‘HD Workstation Main/Sub’ menus become available in the ‘Module Dependent Preferences’...

  • Page 34: Hd Workstation Main/Sub Menu

    ‘Main’. They then occupy channels 1-8 and 9-16 of the ‘192 I/O’ respectively. Where a single ADA-8XR with 16 inputs or outputs is to occupy the input or output space of a single 192 I/O, two Pro Tools HD I/O Modules must be fitted, and this menu will appear separately for each Module.

  • Page 35: Interconnection And Synchronization

    7.7 Interconnection and Synchronization In general, a single ADA-8XR with Pro Tools HD I/O Module is connected to the Pro Tools|HD in exactly the same way as a 192 I/O. If pairs of ADA-8XRs are to emulate a single 192 I/O, or if 16AD or 16DA ADA-8XRs are to be used, it is important to follow the connection schemes detailed below.

  • Page 36: Connecting A 16Ad Ada-8Xr As A 192 I/O

    Expansion Port of ‘D1’ to the Primary Port of ‘D2’ using standard DigiLink cables. A further Digidesign or Prism Sound I/O can be connected to the Expansion Port of ‘D2’ in the usual way. The Wordclock I/O BNCs on the Utility Module are used for Loop Sync I/O if required.

  • Page 37: Connecting A 16Da Ada-8Xr As A 192 I/O

    If a Digidesign SYNC I/O is used, this should be included in the Loop Sync in the usual way. If external sync is to be connected via an ADA-8XR (e.g. from a digital input, or from an AES11 ref sync input), this can be selected from the Pro Tools|HD user-interface in the normal way.

  • Page 38: Controlling Ada-8Xrs From The Pro Tools|Hd User-Interface

    The input and output port assignment menus in the ‘Main’ tab of the ‘Hardware Setup’ dialogue box is not supported by ADA-8XRs. In the case of an ADA-8XR, the input and output ports always appear in the nominal fixed order on the channels of the emulated 192 I/O.

  • Page 39: Identify I/O

    Pro Tools sets its analogue line-up by reference to ‘headroom’ above a nominal operating level of 0VU (+4dBu). The ADA-8XR’s line-up is specified in terms of the dBu equivalent of full-scale digital (0dBFS). So, for example, to set a line-up on the ADA-8XR equivalent to ‘14dB’...

  • Page 40: Modified Loop Sync Cabling Scheme

    48kHz, 96kHz or 192kHz run their Loop Sync at 48kHz. 192 and 96 I/Os cannot synchronize to a Loop Sync of greater than 48kHz. The ADA-8XR, by default, outputs a Wordclock at the same rate as its sample rate when in the recommended Pro Tools|HD configuration. Similarly, Pro Tools|HD configured ADA-8XRs run at the same rate as their Wordclock input when they are not selected as master.

  • Page 41: Dsd I/O Module Prev039/9/1

    I/O Module, the DSD I/O Module allows DSD audio sources and destinations to be connected to the workstation directly. Whilst the DSD format uses a fixed sample rate of 2.8224MHz the ADA-8XR’s DSD I/O Module allows the user to run DSD-connected Paths with any of the ADA-8XR's sample rate and sync options.

  • Page 42: Module Dependent Input Options Menus

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 It is possible to use both the 'squid' and MAC-DSD interfaces simultaneously, providing output on both interfaces and input from the selected interface. 8.4 Module Dependent Input Options Menus...

  • Page 43: Module Dependent Preferences Menus

    DI1 Sync I/P: C1 ←5 C6 C7 C8 Auto Each DSD I/O Module fitted to the ADA-8XR enables a DI Sync Input menu in the Module Dependent Preferences section of the Menu System. This Single Selection menu controls which DSD input carrier will be the Sync Source when a Path is set to sync from 'DI' of the selected Module.

  • Page 44: Module Dependent Factory Default Stores

    Analogue to DSD / DSD to Analogue (MAC-DSD Master) Use this store when the ADA-8XR is to be the master in a MAC-DSD / SuperMAC connection. Path 1 is configured for analogue to DSD conversion, the DSD output appears on the MAC-DSD interface and the Path is synchronized to the wordclock input of the Utility Module (if detected, otherwise local sync).

  • Page 45: Synchronization

    8.8.1 Synchronizing to SDIF-3 Inputs The DSD I/O Module can act as a Sync Source for either Path of the ADA-8XR (provided that at least one valid SDIF-3 input is connected to the Module). The user may select DI1 or DI2 in the Sync Source menu to synchronize that Path to the designated input of that I/O Module.

  • Page 46: Synchronizing To Sdif-2 (Dsd-Raw) Inputs

    When the 'MAC-DSD' option is selected in the DI Input Format Selection Menu the MAC-DSD input can act as a Sync Source for either Path of the ADA-8XR (provided that a valid MAC- DSD stream is connected to the Module input). The user may select DI1 or DI2 in the Sync Source menu to synchronize that Path to the MAC-DSD input of that I/O Module.

  • Page 47: Sample Rate And Format Conversion

    DSD I/O Module can be internally routed from the DSD I/O Module outputs. This method of bridging the two ADA-8XR Paths results in a signal flow which has one set of input channels, but two sets of output channels, one on each Path.

  • Page 48: Analogue To Dsd Performance

    -0.05dB: 0Hz…14.5kHz 8.10.4 (PCM to) DSD to Analogue Performance The following DSD to Analogue specifications are measured using an ADA-8XR Path in PCM to DSD mode as the signal source (since no standard DSD test source is available). They are as the Analogue Line Output Module, see Section 4 of this reference, except for the following: Maximum input level: 0dB SACD (Normal) / +3.1dB SACD (Hot)

  • Page 49: Pcm To Pcm (Synchronous Sample Rate Converter) Performance

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 8.10.5 PCM to PCM (Synchronous Sample Rate Converter) Performance The following specifications are unweighted and apply to all combinations of input and output rates unless otherwise stated. Absolute gain accuracy: -0.05dB All input and output rates except 32kHz: THD+n (997Hz, -1dBFs): <-130dB (0.000032%)

  • Page 50: Firewire I/O Module Prev039/10/1

    9.1 Overview The FireWire I/O Module type PREV039/10/1 provides up to eight channels of digital audio input and output for the ADA-8 or ADA-8XR over a FireWire (also known as IEEE-1394) bus connection. The FireWire I/O Module enables the ADA-8 to be used as a high quality ‘soundcard’, or I/O interface, for native PC and Macintosh workstation applications.

  • Page 51: Apple Macintosh Workstation

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 9.2.2 Apple Macintosh Workstation System Requirements: Mac OS X 10.3.7 or greater • FireWire 400 Port • CPU: PowerPC G4 or G5 @ 700MHz or greater • (G4 @ 1.2GHz recommended for high sample rates) Memory: 256MB RAM or greater •...

  • Page 52: Module Dependent Preferences Menus

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 9.5 Module Dependent Preferences Menus NOTE: This section describes additional menus which are available in ADA-8s fitted with FireWire I/O Modules. However, in normal use it is not necessary to access these menus since loading the relevant Stores, as described in the following sections, automatically selects the correct states of these menus.

  • Page 53: Module Dependent Factory Stores

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 9.6 Module Dependent Factory Stores A selection of Factory Stores have been created for various applications of the FireWire I/O Module, they are described below. 9.6.1 Analogue to Digital / Digital to Analogue (+ Digital) If your ADA-8 is fitted with a single FireWire I/O Module, the “FireWire AD/DA”...

  • Page 54: Analogue To Digital / Digital To Analogue Cascade

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 When this store is recalled each FireWire I/O Module is configured for 2 in / 8 out operation. Giving a total of 16 output channels and 4 dummy input channels (the dummy input channels are required to maintain synchronization between FireWire I/O modules).

  • Page 55: Macintosh Workstation Control Panel

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 9.7 Macintosh Workstation Control Panel The Driver Control Panel for Macintosh Workstations is built-in to the Operating System. This Control Panel can be found in Applications >> Utilities >> ’Audio MIDI Setup’. You can use the Control Panel to set the sampling rate and synchronization mode of your ADA-8.

  • Page 56: Synchronization Modes

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 4 in / 4 out I/O Configuration Mode, the 176.4kHz and 192kHz sampling rates will also be available. 9.7.2 Synchronization Modes There are several synchronization options available to the user when using the FireWire I/O Module with a Macintosh workstation, these are described in the following section.

  • Page 57: Driver Latency

    ADA-8 Analogue Input and Output Modules in future versions. 9.8 Windows PC Workstation Control Panel After running the Driver Installation CD-ROM you will find a ‘Prism Sound 1394 Audio’ icon in your Windows Control Panel. You can use this Driver Control Panel to perform several tasks including renaming devices and channels, optimising the driver latency, and changing the sampling rate and synchronization mode of your ADA-8(s).

  • Page 58: Sampling Rate

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 Each ADA-8 device connected to your workstation will appear in the device list, the default name for each device is its GUID. You can find out the GUID of a FireWire I/O Module using the ADA-8 menu system, as described in Section 9.5.3.

  • Page 59: Synchronization Modes

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 9.8.3 Synchronization Modes Firstly we shall describe the methods for changing the synchronization mode of the PC Driver and the ADA-8, then we will discuss some valid configurations.

  • Page 60: Synchronize To Workstation

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 If it is not already, set the PC Driver synchronization source to ‘External’. You can do this by checking the Clk Master box next to any ADA-8 FireWire I/O Module in the list.

  • Page 61: Driver Latency

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 Check the Clk Master box next to the appropriate FireWire I/O Module in the device list, the PC Driver clock source should now read ‘External’. Next, select the Clock Master FireWire I/O Module and press the ‘Change Synchronization Mode’...

  • Page 62: Module Firmware Upgrade

    Section 9.2, and that the module(s) you wish to update are connected to your PC. Next navigate to Start Menu >> Programs >> Prism Sound ADA-8 1394 Driver, where you will find the Firmware Upgrade Application, run the application.

  • Page 63: Specifications

    Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01 9.10 Specifications Electrical Interface: 2 x 6 Pin IEEE-1394a Compliant IEEE-1394 Power Class: Audio Format: IEC 61883-6 (2 Edition) © Prism Media Products Limited, 2001-2005 Page 3.62...

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