DENSITÉ series DAP-1781 8 Channel Digital Audio Processor with: Dolby Decoder Dolby-E Encoder Dolby-D Encoder upMAXTM Upmixer option Guide to Installation and Operation M769-9900-224 5 July 2013 Miranda Technologies 3499 Douglas-B.-Floreani St-Laurent, Québec, Canada H4S 2C6 Tel. 514-333-1772 Fax. 514-333-9828 www.miranda.
GUIDE TO INSTALLATION AND OPERATION Electromagnetic Compatibility This equipment has been tested for verification of compliance with FCC Part 15, Subpart B requirements for Class A digital devices. Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
GUIDE TO INSTALLATION AND OPERATION Table of Contents 1 DAP-1781 8 Channel Digital Audio Processor ..................................................................... 5 1.1 1.2 1.3 1.4 1.5 1.6 2 Installation ............................................................................................................................... 9 2.1 2.2 3 Unpacking ...........................................................................................................................................
GUIDE TO INSTALLATION AND OPERATION 4.9 Audio Type ........................................................................................................................................ 52 4.10 RALM tab .......................................................................................................................................... 53 4.10.1 RALM Connections tab ........................................................................................................ 53 4.10.
1 DAP-1781 8 Channel Digital Audio Processor 1.1 Introduction The DAP-1781 is an eight-channel high quality digital audio processor designed to work alone or with a wide range of video converters, frame synchronizer proc/amps of the Densité series. The card features two distinct processing blocks: Input and Output. The input processing includes Dolby detection, Tone generator, delay adjustments, level controls and phase correction.
GUIDE TO INSTALLATION AND OPERATION 1.2 Features • Stand-alone 8 channel audio processor and delay. • 8 channel processing of embedded audio signals. • Fixed delay and up to 8 video frames tracking delay • Full channel shuffling on the outputs • 2 and 4 channel mix-down • Audio metering data for audio levels and phase over IP.
Clock Out DIR SRC DIR SRC DIR SRC Dolby Detection GPI x4 input ABUS SELECT 1-8 or 9 - 16 8 To 2nd Audio Card RS422 receiver V-in-Clock Swap L-R 16 Channels ABUS IN 16 9 DBE & AC3 DEC * 16 9 8 7 DUP-701* Inputs Sel 16>6 8 7 6 1 Tone MetaData Downmixer Inputs Sel 16>6 16 9 UP Mixer Clock Out 16 9 8 8 Inputs Sel 16>2 1 1 * Only one of these options can be installed at a time.
GUIDE TO INSTALLATION AND OPERATION 1.5 Simplified Block Diagram Metadata Input (RS422) Metadata Reference Ref. IN Microcontroller Remote Control VIDEO Select Metadata Output Ext/Int 16 x No Signal 16 x Overload 8 x Peak meters, 4 x Phase meters DAP-1781 BLOCK DIAGRAM SELECT D1 Card front-edge layout STATUS 1.
GUIDE TO INSTALLATION AND OPERATION 2 Installation 2.1 Unpacking Make sure you have ordered and received the DAP-1781 and its associated rear panel. If any of the following items are missing, contact your distributor or Miranda Technologies Inc. • DAP-1781 8-Channel Digital Audio Processor • One of the DAP-1781 Rear Panels (see figures on page 6) • An A-BUS flat cable 2.2 Installation in the Densité frame The DAP-1781 must be mounted in a DENSITÉ frame.
GUIDE TO INSTALLATION AND OPERATION 2.2.1 Rear Panel Options Single rear panels AES3 or AES3-id compatible: +G+G- META IN +G- +G- + G - + G - A choice of HD-15 adapters sold by Miranda: • A cable adapter SUB-HD15 male to four female 75 Ohm BNC coaxial connectors is available from Miranda product number "BOC-DE15-4BNC-1". • A HD-15 to terminal block adapter is available from Miranda product number "NSH15M".
GUIDE TO INSTALLATION AND OPERATION OPTIONAL DOLBY LM100 INTERFACE On the LM100, use the Serial Remote Control Input at the rear which is a 9-pin female D-connector RS-485.
GUIDE TO INSTALLATION AND OPERATION 3 Local control using the Densité frame control panel Push the SELECT button on DAP-1781 card edge (see Section 1.6) to assign the local control panel to operate the DAP-1781. Use the control panel buttons to navigate through the menu, as described below. All of the cards installed in a Densité frame are connected to the frame’s controller card, which handles all interaction between the cards and the outside world.
GUIDE TO INSTALLATION AND OPERATION Activated Serial report GPI report Yellow Card system error Reference error AES In 1 carrier no lock AES In 1 carrier biphase error AES In 1 carrier parity error AES In 1 carrier CRCC error AES In 1 carrier invalid sample AES In 1 Non-PCM detection AES In 1 Dolby E detection AES In 2 carrier no lock AES In 2 carrier biphase error
GUIDE TO INSTALLATION AND OPERATION Activated Serial report GPI report Yellow CH8 (AES In 4R) NSD CH9 (EXT 1/9) NSD CH10 (EXT 2/10) NSD CH11 (EXT 3/11) NSD Red CH12 (EXT 4/12) NSD CH13 (EXT 5/13) NSD CH14 (EXT 6/14) NSD CH15 (EXT 7/15) NSD CH16 (EXT 8/16) NSD CH1 (AES In 1L) Overload CH2 (AES In 1R) Overload CH3 (AES In 2L) Overload CH4 (AES In 2R) Overload
GUIDE TO INSTALLATION AND OPERATION Serial report GPI report CH8 Mixer, Input A Overload CH8 Mixer, Input B Overload CH1 Mixer, Output (AES Out 1L) Overload CH2 Mixer, Output (AES Out 1R) Overload CH3 Mixer, Output (AES Out 2L) Overload CH4 Mixer, Output (AES Out 2R) Overload CH5 Mixer, Output (AES Out 3L) Overload CH6 Mixer, Output (AES Out 3R) Overload CH7 Mixer, Output (AES Out 4L) Overload CH8 Mixer, Output (AES
GUIDE TO INSTALLATION AND OPERATION 3.2 Menu for local control The DAP-1781 has operating parameters which may be adjusted locally at the controller card interface. After pressing the SELECT button on the DAP-1781 module, use the keys on the local control panel (described in the Controller card manual) to step through the displayed menu and adjust the parameters. The menus are shown below.
GUIDE TO INSTALLATION AND OPERATION STATUS METADATA INPUT NOT ACTIVE | [parameter1 PRESENT | REV parameter1 PRESENT | REV parameter1 ABSENT | REV parameter2 | REV LAST VALID | REV BLANKED | [USING GEN, [DETECTED parameter1]]] STATUS parameter1 = EXT | DEC | ABUS parameter2 = GENERATOR | USER1 | … | USER10 | FACTORY COMMON PROGRAM CONFIG, FRAME RATE Each item will be placed on the first line and it’s corresponding status on the second line.
GUIDE TO INSTALLATION AND OPERATION 18 | DAP-1781
GUIDE TO INSTALLATION AND OPERATION upMAX OPERATING MODE OFF, ON PROCESSING PASS-THROUGH, UPMIX, AUTOMAX, METADATA FOLLOW REVERSION MODE PASS-THROUGH, UPMIX, LAST VALID (METADATA FOLLOW) INPUT UPMIX/DOWNMIX or L/R CH1&2, CH3&4, ..., CH15&16 C/LFE CH1&2, CH3&4, …, CH15&16 SL/SR CH1&2, CH3&4, CH5&6, …, CH15&16 CENTER WIDTH 0, 1, ..., 70, …, 100 % SURROUND DEPTH 0, 1, …, 100 % LFE CHANNEL OFF, ON LFE LEVEL 0, 1, ...
GUIDE TO INSTALLATION AND OPERATION METADATA INPUT SOURCE RS-422 PORT, DOLBY DECODER, A-BUS IN OUTPUT SOURCE INPUT, GENERATOR REVERSION MODE RS-422 PORT, DOLBY DECODER, A-BUS IN, GENERATOR, USER1, USER2, …, USER10, FACT, LAST VALID, BLANK HOLD HOLD NOW | RELEASE NOW PROGRAM CONFIG 5.1+2, 5.1+2x1, ..., 7.1 Screen (not all available in 16-bit mode) PROG 1 DIALOGUE LEVEL -31, ..., -27, ...
GUIDE TO INSTALLATION AND OPERATION LOUDNESS INTERNAL OPERATING MODE OFF, ON FILTER TYPE LEQ(A), ITU-R BS.1770 CHANNEL SELECT CH1 OFF, ON ...
GUIDE TO INSTALLATION AND OPERATION MONITORING CONFIGURE ALARMS LEFT AES OUT 1L, AES OUT 1R, ..., AES OUT 4L, AES OUT 4R RIGHT AES OUT 1L, AES OUT 1R, ..., AES OUT 4L, AES OUT 4R CARD SYSTEM ALARM MODE REFERENCE ALARM LEVEL YELLOW, RED, FLASH RED (default depends on alarm) ALARM REPORT NONE, GPI AES INPUTS IN1 NO LOCK IN1 BIPHASE IN1 PARITY IN1 CRCC IN1 VALIDITY IN1 PCM IN1 NON-PCM IN1 DOLBY E IN1 AC-3 ...
GUIDE TO INSTALLATION AND OPERATION REFERENCE A-BUS CONFIG SOURCE FREE-RUN, AES1, FRAME (20), FRAME (10), A-BUS, AUTO DEF FRAME RATE 23.98, 24, 25, 29.
GUIDE TO INSTALLATION AND OPERATION 4 Remote control using Miranda’s iControl system The operation of the DAP-1781 may be controlled using Miranda’s iControl system. • This manual describes the control panels associated with the DAP1781 and their use. • Please consult the iControl User’s Guide for information about setting up and operating iControl. In iControl Navigator or iControl Websites, double-click on the DAP-1781 icon to open the control panel.
GUIDE TO INSTALLATION AND OPERATION Status Icons At the top, to the left of the Miranda logo, are six status icons that report various aspects of the card’s operation. Icon # Indicates appearance interpretation 1 Card control status Green if the card is controlled remotely (iControl). Yellow when locally controlled.
GUIDE TO INSTALLATION AND OPERATION 4.1 4.1.1 Audio Processing Audio Processing - CH 1-4 to CH 13-16 tabs The channels 1 to 8 represent the AES1 to AES4 digital inputs. When a video card is present, eight extracted audio channels are available as channel 9 to channel 16. See Audio Processing/Config tab for the input selection from the video card.
GUIDE TO INSTALLATION AND OPERATION 4.1.1.2 Fixed Delay sub-tab For each channel, two sliders allow delay to be adjusted, with two levels of precision: • • Coarse – adjusts the delay in ms, from -250 ms to 2400 ms Fine – adjusts the delay in sample increments, from -47 to 47. Input data boxes are available to enter numerical values directly. The displayed value gives the delay between a card input and a digital output.
GUIDE TO INSTALLATION AND OPERATION 4.1.2 Audio Processing - CONFIG tab Audio Proc Input Selection: when a video card is connected via A-BUS, up to sixteen extracted audio channels may be present. The pull-down box allows selection of the feed for the 8 internal processing audio channels 9 to 16. The two possible selections are A-BUS IN CH1-8 or A-BUS IN CH9-16. 4.1.
GUIDE TO INSTALLATION AND OPERATION 4.2 Audio Output 4.2.1 Audio Output - CH 1-2 to CH 7-8 tabs Each of these tabs controls the output processing for two output channels – source selectors, level controls and mixers for each output. A colored box indicates the audio type for each output of the card. • Detected audio types can be PCM, AC3 (Dolby Digital), Dolby-E or N-PCM (other non-PCM). The Operation Mode pulldown establishes the configuration of the controls for an output channel.
GUIDE TO INSTALLATION AND OPERATION Mix (see CH 3 in the figure on the right) Two sources are selected using the Source A and Source B A-BUS Select and Channel pulldowns. The two sources are mixed, with the level of each source adjusted using its slider or data entry box. • • NOTE: The A-BUS select options are: oV select one of the 16 channels from the video card. o A1 select one of the 16 channels from an audio card.
GUIDE TO INSTALLATION AND OPERATION 4.2.2 Audio Output – Auto-Mix When the Mix operation mode is selected, an autoMix feature is proposed. With a one-click operation, the transition between two sets of sources can be done at the same time, with fade-in-time and fadeout time controlled by a slider. All the channels that have the Auto-Mix checked will fade between Source A inputs and Source B inputs.
GUIDE TO INSTALLATION AND OPERATION 4.3 Dolby This window provides control and status information for an optional Dolby module. The active tab depends on the type of the optional card physically installed on the DAP-1781. 4.3.1 Dolby Decoder tab The decoder supports a Dolby-E, Dolby Digital or PCM signal; any other non-PCM signal will be lost through the decoder module, its outputs will be muted.
GUIDE TO INSTALLATION AND OPERATION The Dolby Digital section is available only if the input bit stream is Dolby Digital, and the Detection Mode is Dolby Digital or Auto. The Stream Select parameter selects the stream number to be decoded when multiple Dolby Digital bit streams are embedded within a single AES pair. The AES Channel Select parameter selects which AES3 channel is the source of the Dolby Digital decoder if the Dolby Digital data is configured in Professional 16-bit format.
GUIDE TO INSTALLATION AND OPERATION 4.3.1.3 Dolby Digital sub-tab The Decoder to Proc Channel Assignment section indicates the output channel assignment. The Main Output sub-section shows channels assignment related to the Program Configuration. The Dolby Digital Status section indicates status information for the Dolby Digital bit stream selected at the bottom of the Control tab: Coding Mode, Data Rate, Bitstream Mode, Dialnorm value, Dolby Surround Mode, Surround EX Mode and Preferred Stereo Downmix.
GUIDE TO INSTALLATION AND OPERATION 4.3.2 Dolby-E Encoder tab A video reference signal and Metadata are required for encoding. Refer to Ref and Metadata tabs. 4.3.2.1 Inputs and Outputs An input shuffler allows any combination of the inputs channels (default are CH1 to CH8). The Dolby-E signal is mapped into the channel pair selected in the pull-down “Output Channels”. Metering the encoded channels is available when the Dolby-E output is routed to one of the local card outputs; refer to the RALM tab. 4.
GUIDE TO INSTALLATION AND OPERATION 4.3.3 Dolby Digital (AC-3) Encoder tab 4.3.3.1 Inputs and Outputs An input shuffler allows any combination of the input channels (default are CH1 to CH6). The input labeling will follow the Metadata (Coding Mode parameter for the selected Program). The Dolby-Digital signal is mapped into the channel pair selected in the pull-down “Output Channels”. 4.3.3.2 Configuration Encoder Control The operational mode can be Dolby Digital Encode or Pass-through.
GUIDE TO INSTALLATION AND OPERATION Encode Latency This parameter specifies the Latency of the Dolby Digital encoder, in both encoding and pass-through mode. It ranges from 150 ms to 450 ms, with 187 ms default value. 4.3.3.3 Status Encoder This parameter indicates the operational status of the encoder. Metadata Bit-Stream The Metadata will be reported as invalid if it contains missing and/or invalid parameters or erroneous segment checksums.
GUIDE TO INSTALLATION AND OPERATION 4.4 4.4.1 Metadata Input Status Three icons are dedicated to the status of each metadata input. A green icon indicates the presence and validity of a Metadata bit stream. The RS-422 input is not available on the single width rear panels DEC-75-SRP and DEC-110SRP, the Decoder input implies the presence of a Dolby Decoder optional card and the A-BUS input requires a XVP-1801 video card connected through the A-BUS cable.
GUIDE TO INSTALLATION AND OPERATION Metadata Profile Copy for Card [DAP-1781] Click the Profiles button at the bottom of the Metadata panel to open a window allowing Metadata settings to be copied from this DAP-1781 card to other DAP-1781 cards. • The Copy Profile From line shows the current DAP-1781.
GUIDE TO INSTALLATION AND OPERATION 4.4.4 Input tab This section displays the Metadata parameters after the automatic selection between the Primary Input Metadata bit stream and the Backup source. These Input parameters are used throughout the card, by the Downmix, Loudness and upMAX stages, the Dolby encoder, the ABUS output... It is split into five parts, the Input section at the left and four sub tabs at the right.
GUIDE TO INSTALLATION AND OPERATION 4.4.6 Loudness tab The loudness management is an option for the DAP-1781. Once enabled, the loudness measurement becomes part of the internal processing available on the DAP-1781. Additionally, an interface to a Dolby LM100 is proposed with a remote access to a set of commands and status of this particular product. The Program Select zone allows the selection of one Metadata program.
GUIDE TO INSTALLATION AND OPERATION LM100 Interfacing with a remote LM100 is done through the two Metadata RS-422 ports on the DAP-1781 rear panel and the remote RS-485 port on the LM100. Refer to section 2.2.1 for connections and settings. The Measurement ON command activates the link with the LM100, indicated by the green icon. The Method pull down menu proposes two modes of operation relating to the measurement period: Short Term and Infinite modes.
GUIDE TO INSTALLATION AND OPERATION 4.5 Dynamic Processing This process is part of the input processor, refer to the block diagram. 4.5.1 CH 1 to CH 8 tabs Each of these tabs controls the dynamic processing for one channel. The available functions are Limiter, Compressor, and Downward Expander. A Gain trim allows compensation of the loudness attenuation that follows compression.
GUIDE TO INSTALLATION AND OPERATION 4.5.2 CH 9 to CH 16 tabs The functions are the same as above but for channels 9 to 16.
GUIDE TO INSTALLATION AND OPERATION 4.6 4.6.1 UPMIX/DOWNMIX UPMIX/DOWNMIX – Config tab With the UP/DOWN MIX option enabled (see section 4.15), the UP/DOWN MIX mode radio buttons offer the choice between • OFF • UPMIX • DOWNMIX Once the choice is made, the appropriate tab will be enabled (its text will not be grayed-out), and can be accessed to configure the mix process. This process is part of the input processor, refer to the block diagram. 4.6.
GUIDE TO INSTALLATION AND OPERATION 4.6.3 UPMIX/DOWNMIX – DOWNMIX tab This tab provides resources to control the downmix of a “5.1 channel” surround-sound audio signal into an LtRt or LoRo stereo pair. The 5.1 terminology refers to six discrete audio channels, with the low-frequency channel of limited bandwidth designated as the .1 channel. The downmix can be done using any of the 16 audio channels processed by the audio processor using the Input Channels controls in the interface.
GUIDE TO INSTALLATION AND OPERATION will use the Default Metadata Configuration if the Reversion mode is set to Default, otherwise it will use the metadata parameters in the selected Backup Metadata (Metadata panel) when set to Backup Metadata. Downmix Settings: The Current Settings status indicates the current set of configuration parameters used for downmixing depending on the Operation Mode and Reversion Mode.
GUIDE TO INSTALLATION AND OPERATION Table 3: Current Downmix Settings Legend Follow Metadata Config Default Config Manual Config Metadata Status Input Primary/ Backup Metadata Present Metadata Parameters Absent Input Primary/Backup Metadata Prog 1 Ext BSI * Downmix mode = Lt/Rt Downmix mode = Lo/Ro Downmix mode = Not indicated/ Reserved Ext BSI does not exist Absent Absent Absent Absent Downmix mode = Lt/Rt Downmix mode = Lo/Ro Downmix mode = Not indicated/ Reserved Ext BSI does not ex
GUIDE TO INSTALLATION AND OPERATION LoRo: This mode enables the downmix of 5.1 channels into an LoRo stereo pair, which is a conventional stereo signal. The LoRo downmixing process adds a latency of 41.7 µs (2/48000 samples) through the card. To keep control on the processing delay, the tracking delay has to be larger than 3 ms and with a stand alone card select a fixed delay larger than 3 ms. 4.
GUIDE TO INSTALLATION AND OPERATION TM Note: The AutoMAX-II algorithm is supported by firmware version 1.3.1.0 and later. Firmware version TM TM 1.3.0.0 supports only the AutoMAX algorithm. The AutoMAX algorithm does not support the upmix-topass and pass-to-upmix transition speeds. The version number is available through the front panel menu Status-upMax. • Metadata Follow Mode & Reversion Mode This process may be useful for sources that switch between 5.1 and stereo.
GUIDE TO INSTALLATION AND OPERATION 4.8 Channel Status 4.8.1 Channel Status - Status AES1-4 & Status AES5-8 tabs This tab displays the most relevant parameters coded within each incoming AES channel: USE Displays PRO or Consumer PCM Coding of incoming data: Linear or Non-Linear. Emphasis Coding of the emphasis applied on the signal. Freq. Mode Indicates if the source is locked to a local reference signal. Samp. Freq. Value of the sampling frequency. Chan.
GUIDE TO INSTALLATION AND OPERATION 4.9 Audio Type This Window indicates the audio type of each channel at the input of the card, and at the A-BUS inputs and outputs. Detected audio types can be PCM, AC3 (Dolby Digital), Dolby-E or NPCM (other non-PCM). The input channels are available for the optional Dolby decoder module input. Input The Card Input Channels 1 to 8 represent the card digital inputs.
GUIDE TO INSTALLATION AND OPERATION 4.10 RALM tab This Remote Audio Level Meters feature allows distant supervision of the audio levels present at the eight outputs of the DAP-1781. 4.10.1 RALM Connections tab CH1&2, CH3&4, CH5&6, CH7&8 – each radio button turns the player ON or OFF for the pair of channels. Reset Counter – reset the overload counter to zero. The counters are located on top of each meter. See Overload Cursor in the Meter Ballistics section for more information.
GUIDE TO INSTALLATION AND OPERATION 4.11 A-BUS The DAP-1781 can be used stand alone or as a companion to provide additional audio channels for other Densité cards. The A-BUS (audio bus) links the DAP-1781 to the other cards and is used to configure the system and to display the presence of other installed cards. A-BUS Config: Select whether the A-BUS is to be disabled, and whether this DAP-1781 is Master, Slave 1 or Slave 2 in the A-BUS configuration.
GUIDE TO INSTALLATION AND OPERATION 4.12 Reference Input Reference – Desired: Use a radio button to select a reference signal for the DAP-1781. The reference sources are placed by order of priority where A-BUS has the highest priority. The absence of the selected reference is an error condition. • Select Auto in the header bar to automatically select the highest-priority reference present and valid. Reference – Current: This section indicates the current reference used by the DAP-1781.
GUIDE TO INSTALLATION AND OPERATION 4.13 Rear Type This tab shows the type of the rear panel: single or dual width, and digital inputs/outputs standard. The 2 RU dual width rear panels and the 3 RU single width panels allow the installation of any optional Dolby module, either encoder or decoder. The 2 RU single width rear panels are specialized for one type of an optional Dolby module. 4.14 Factory / Presets 4.14.
GUIDE TO INSTALLATION AND OPERATION 4.14.4 Profiles Click the Profiles button at the bottom of the Factory/Presets panel to open a window allowing parameter settings to be copied from this DAP-1781 card to other DAP-1781 cards. • The Copy Profile From line shows the current DAP-1781. • The Copy Profile To table shows all other DAP-1781 cards available in the local iControl environment Save Profile to Disk command: This command is used to save a Profile as a configuration file on a disk.
GUIDE TO INSTALLATION AND OPERATION 4.15 Options Three options are available for the DAP-1781: • UP/DOWN MIXING (DAP-1781-OPT-UDM) • DYNAMIC PROCESSING (DAP-1781-OPT-DP) • LOUDNESS MANAGEMENT (DAP-1781-OPT-LM) Activate either option on the DAP-1781 card by entering the activation key into the Enter Key data box in its tab, and clicking the Enable Option button. • The current status of the option is shown in the status box below the Enter Key data box.
GUIDE TO INSTALLATION AND OPERATION 4.16 Alarms Configuration Selecting the Alarm config tab opens a separate window for error status reporting. The alarm Configuration Panel shows all measured parameters and offers the following options for each: Choose an alarm Name, use the pull-down box in the Overall alarm column to select the level associated to this alarm: Disabled, Minor, Major or Critical. Check Log events to enable logging.
GUIDE TO INSTALLATION AND OPERATION Each alarm provided by a Densité card has an associated value, or key, that serves as a unique identifier. An alarm’s URI, for example, contains its key. The Alarm Key can also be useful when creating scripts. The Get alarm Keys button is used to save a list of the card’s alarms, the associated keys, as well as the currently configured Overall and GSM contributions in a .csv file that can be viewed in any text editor or spreadsheet application. Refer to iControl 3.
GUIDE TO INSTALLATION AND OPERATION 5 Specifications Digital Inputs (4) Sampling freq.: Quantization: 32 to 100 kHz 16 to 24 bits AES3: Level Input impedance 0.2 to 7 Vpp 110 Ω balanced AES3-id: Level : Input impedance Return loss 0.2 to 2 Vpp 75 Ω 18 dB @ 12 MHz Digital Outputs (4) Sampling freq. Quantization Intrinsic Jitter 48 kHz 24 bits 5 mUI (700 Hz to 100 kHz) AES3 Level Impedance 3.7 Vpp 110 Ω AES-3id Level Impedance Return loss 1.0 Vpp 75 Ω 15 dB @ 6.
GUIDE TO INSTALLATION AND OPERATION Miscellaneous Tone generator Signal presence threshold No signal delay Fixed delay Tracking delay GPI inputs (via A-BUS only) 1 kHz sine wave interrupted on left channel (250 ms / 3 s) EBU R49 from –72 to –48 dBFS (6 dB steps) from 0 to 255 s (1 s steps) 0 to 2.4 s Steps: ms (coarse) & sample (fine) 0 to 8 video frames The GPI information is transmitted to the DAP-1781 at the switch line.
GUIDE TO INSTALLATION AND OPERATION 6 Document History Document Version Author Initial Date 100 CSIX 2007-06-24 Assembly 0769-0100-102 Modifications Creation of the document iControl 3.11 B154 110 CSIX 2007-11-30 0769-0100-102 iControl 3.20 B103 200 CSIX 2008-04-18 0769-0100-206 iControl 3.20 B244 210 CSIX 2008-10-09 0769-0100-209 iControl 3.30 B173 upMAXTM Upmixer Option added, Internal Metadata path corrected, Metadata delay added.
GUIDE TO INSTALLATION AND OPERATION Appendix A – Dolby Digital Main Channel Output Functions Coding Mode 3/2 2/2 3/1 2/1 3/0 2/0 1/0 1+1 64 | DAP-1781 Listening Mode Full 3 Stereo Phantom Stereo Mono Full 3 Stereo Phantom Stereo Mono Full 3 Stereo Phantom Stereo Mono Full 3 Stereo Phantom Stereo Mono Full 3 Stereo Phantom Stereo Mono Full 3 Stereo Phantom Stereo Mono Full 3 Stereo Phantom Stereo Mono Full 3 Stereo Phantom Stereo Mono Main Channel Output Function All 3/2 channels 3 Stereo downmix
GUIDE TO INSTALLATION AND OPERATION Appendix B – Default Dolby-E Metadata Parameters Program Config : 5.1.+ 2 Frame rate : current DAP-1781 frame rate.
GUIDE TO INSTALLATION AND OPERATION Appendix C – Metadata Input/Output Serial Port Depending on the rear panel used, the DAP-1781 can have a Metadata In, a Metadata Out or both ports. These ports use RS-422/485 levels and operate at 115200 bps. Metadata Source: DAP-1781 When the DAP-1781 is transmitting data, it is considered to be the RS-485/422 bus controller. The device receiving the metadata is the tributary.
GUIDE TO INSTALLATION AND OPERATION Appendix D – Examples of Applications with Optional Cards DAP-1781 | 67
GUIDE TO INSTALLATION AND OPERATION Dolby decode, Processing & Dolby Digital (AC-3) encode XVP-1801 HD/SD Video proc ref Audio proc AES Dolby-E Dolby-E Comp. or Dolby or AC-3 Limiter Digital Decoder Expand. Decoder metadata meta. The tracking delay is applied on this audio card. Set the Fixed Delay, with a negative value, to compensate the tracking delay: minus 7 frames. Audio bus DAP-1781 #2 On the video card, set the Additionnal Frame Delay to 7 frames to match the decode/ encode latencies.
GUIDE TO INSTALLATION AND OPERATION LINEAR ACOUSTIC upmix, Processing & Dolby Digital (AC-3) encode XVP-1801 HD/SD Video proc ref Audio proc LINEAR ACOUSTIC UpMaxtm metadata AES Dolby-E Comp. or Dolby Limiter Digital Expand. Decoder meta. The tracking delay is applied on this audio card. Set the Fixed Delay, with a negative value, to compensate the tracking delay: minus 7 frames.
GUIDE TO INSTALLATION AND OPERATION Dolby decode, Downmix & Dolby Digital (AC-3) encode XVP-1801 HD/SD Video proc ref Audio proc metadata AES Dolby-E or Dolby Dolby Downmix/ Digital Decoder Upmix Decoder AES meta. AES AC-3 Encoder metadata 70 | DAP-1781 The tracking delay is applied on this audio card. Set the Fixed Delay, with a negative value, to compensate the tracking delay: minus 7 frames.
