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Albalá Ingenieros DEF2008C01 Manual

Asynchronous aes/ebu audio front-end for the audiochain bus of the tl2000 terminal line
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DEF2008C01
ASYNCHRONOUS AES/EBU AUDIO FRONT-END FOR THE AUDIOCHAIN BUS
OF THE TL2000 TERMINAL LINE
Version 1.0
Albalá Ingenieros, S.A.
09 December 2020 - © Albalá Ingenieros S.A. - All rights reserved
Medea, 4 - 28037 Madrid - Spain

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  • Page 1 DEF2008C01 ASYNCHRONOUS AES/EBU AUDIO FRONT-END FOR THE AUDIOCHAIN BUS OF THE TL2000 TERMINAL LINE Version 1.0 Albalá Ingenieros, S.A. 09 December 2020 - © Albalá Ingenieros S.A. - All rights reserved Medea, 4 - 28037 Madrid - Spain...
  • Page 2 DEF2008C01...

  • Page 3: Table Of Contents

    4.4. The AES/EBU outputs ......................... 18 4.5. Level gain and measurement ....................18 4.6. Module remote control and supervision ................19 4.6.1. Details of the DEF2008C01 registers ................20 5. GLOSSARY ........................29 6. REGULATIONS ........................31 7. VERSIONS ......................... 33...
  • Page 4 DEF2008C01...

  • Page 5: Description

    SNMP management and the ability to record events in a file including date and time information for further analysis. The DEF2008C01 is a TL2000 terminal line module and can be housed in a two rack unit (2 RU) UR2000 mounting frame.

  • Page 6: Features

    Albalá Ingenieros | Manual DEF2008C01 1.2. Features • AES/EBU audio input/output interface for the audio daisy chain bus (AUDIOCHAIN) of a TL2000 line terminal. • The AUDIOCHAIN is an interface provided by the backplane of a UR2000 mounting frame that can be used to transmit up to 16 audio channels in each direction between two or more modules installed in adjacent slots.

  • Page 7: Block Diagram

    Albalá Ingenieros | Manual DEF2008C01 1.3. Block diagram...
  • Page 8 Albalá Ingenieros | Manual DEF2008C01 DEF2008C01...

  • Page 9: Specifications

    Albalá Ingenieros | Manual DEF2008C01 2. SPECIFICATIONS AES/EBU digital audio signal input Connector Sub-D 25 pin female Impedance 110 Ω ±20% Type Transformer balanced Encoding and electrical characteristics According to EBU Tech. 3250-E/AES3 standard Sampling rate 48 kHz free-run or locked...
  • Page 10 Albalá Ingenieros | Manual DEF2008C01 DEF2008C01...

  • Page 11: Installation

    • The DEF2008C01 module and the mounting frame should always be installed, maintained, operated and removed by personnel with sufficient technical qualifications. The equipment should never be placed in damp areas, near splashing liquid, or in explosive or corrosive atmospheres.

  • Page 12: Environmental Considerations

    1 - Remove the blank panel covering the front of the empty slot chosen for installing the DEF2008C01 in the mounting frame. 2 - Insert the DEF2008C01 module into the front of the mounting frame. The edges of the card slide into two plastic guides inside the mounting frame.

  • Page 13: Interconnection

    Albalá Ingenieros | Manual DEF2008C01 3.5. Interconnection The arrangement of the front panel connectors of the DEF2008C01 module is shown in the following figure. Front panel of the DEF2008C01 The DEF2008C01 includes eight AES/EBU audio interfaces (IN1/OUT5, IN2/OUT6, IN3/OUT7, IN4/OUT8, IN5/OUT1, IN6/OUT2, IN7/OUT3 and IN8/OUT4) that can be...

  • Page 14: Digital Audio Connections

    Albalá Ingenieros | Manual DEF2008C01 The front panel has not been designed to support mechanical stress. All cabling in the rack where the mounting frame is located should be properly supported so that the front panel does not provide mechanical support.

  • Page 15: Operation

    Albalá Ingenieros | Manual DEF2008C01 4. OPERATION This section describes the significance of the front panel indicators of the DEF2008C01 module and their remote control and monitoring ability. 4.1. Front panel description The appearance of the front panel and the elements it contains are shown in the following illustration.

  • Page 16: Functional Description

    4.2. Functional description The DEF2008C01 is an auxiliary TL2000 line terminal module that includes eight digital audio interfaces through which AES/EBU streams can be received for delivery to modules located in adjacent slots or the AES/EBU streams from adjacent modules can be transmitted.

  • Page 17: The Aes/Ebu Inputs

    AES/EBU remains intact. The DEF2008C01 has two operating modes when the input signal is absent: it can stop inserting the audio stream into the AUDIOCHAIN or, by default, it can generate and...

  • Page 18: The Aes/Ebu Outputs

    The status channel used for both channels of the output stream is unique and will come from the left channel. By default the AES/EBU outputs delivered by the DEF2008C01 are synchronized to the AUDIOCHAIN bus audio. If the outputs need to be synchronized to an external AES/EBU reference signal then an ASRC can be activated independently for each pair of outputs.

  • Page 19: Module Remote Control And Supervision

    Albalá Ingenieros | Manual DEF2008C01 4.6. Module remote control and supervision The DEF2008C01 requires remote control for configuration. In order to perform remote configuration and supervision of the module an optional TL2000 family remote communications controller must be installed in the mounting frame.

  • Page 20: Details Of The Def2008C01 Registers

    AES/EBU inputs and the AUDIOCHAIN. - User preset management. 4.6.1. Details of the DEF2008C01 registers The DEF2008C01 module provides control and status registers that can be read and written by means of specific commands described in the communication control module user manuals.
  • Page 21 Albalá Ingenieros | Manual DEF2008C01 OUT1_ASRC_EN 0x03 0x01 Enables ASRC in AES1 output, using AES1 input as reference 0=No, 1=Yes OUT2_ASRC_EN 0x03 0x02 Enables ASRC in AES2 output, using AES2 input as reference 0=No, 1=Yes OUT3_ASRC_EN 0x03 0x04 Enables ASRC in AES3 output, using AES3 input as reference...
  • Page 22 Albalá Ingenieros | Manual DEF2008C01 R2L_OUT_9_SRC 0x08 0x0800 0x1F Insertion source used in R2L OUT channel 9 0=AES1 Left, 1=AES1 Right, 2=AES2 Left, 3=AES2 Right, 4=AES3 Left, 5=AES3 Right, 6=AES4 Left, 7=AES4 Right, 8=AES5 Left, 9=AES5 Right, 10=AES6 Left, 11=AES6 Right, 12=AES7 Left, 13=AES7 Right, 14=AES8 Left, 15=AES8 Right,...
  • Page 23 Albalá Ingenieros | Manual DEF2008C01 L2R_OUT_7_SRC 0x06 0x0810 0x1F Insertion source used in L2R OUT channel 7 0=AES1 Left, 1=AES1 Right, 2=AES2 Left, 3=AES2 Right, 4=AES3 Left, 5=AES3 Right, 6=AES4 Left, 7=AES4 Right, 8=AES5 Left, 9=AES5 Right, 10=AES6 Left, 11=AES6 Right, 12=AES7 Left, 13=AES7 Right, 14=AES8 Left, 15=AES8 Right,...
  • Page 24 Albalá Ingenieros | Manual DEF2008C01 AES2_L_OUT_SRC 0x02 0x0820 0x3F Insertion source used in AES2 channel left when used as output 0=L2R ch. 1, 1=L2R ch. 2, 2=L2R ch. 3, 3=L2R ch. 4, 4=L2R ch. 5, 5=L2R ch. 6, 6=L2R ch. 7, 7=L2R ch. 8, 8=L2R ch. 9, 9=L2R ch. 10, 10=L2R ch. 11, 11=L2R ch. 12, 12=L2R ch.
  • Page 25 Albalá Ingenieros | Manual DEF2008C01 AES7_L_OUT_SRC 0x0C 0x0820 0x3F Insertion source used in AES7 channel left when used as output 0=L2R ch. 1, 1=L2R ch. 2, 2=L2R ch. 3, 3=L2R ch. 4, 4=L2R ch. 5, 5=L2R ch. 6, 6=L2R ch. 7, 7=L2R ch. 8, 8=L2R ch. 9, 9=L2R ch. 10, 10=L2R ch. 11, 11=L2R ch. 12, 12=L2R ch.
  • Page 26 Albalá Ingenieros | Manual DEF2008C01 GAIN_OUT_3_R 0x05 0x0840 0x7F AES3 OUT channel right gain = 24-x/2 dB GAIN_OUT_4_L 0x06 0x0840 0x7F AES4 OUT channel left gain = 24-x/2 dB GAIN_OUT_4_R 0x07 0x0840 0x7F AES4 OUT channel right gain = 24-x/2 dB...
  • Page 27 Albalá Ingenieros | Manual DEF2008C01 AES_OUT5_L_LEVEL 0x08 0x0860 0xFF AES1 OUT channel left level = (x - 255)/4 dBFS (0=Mute) AES_OUT5_R_LEVEL 0x09 0x0860 0xFF AES1 OUT channel right level = (x - 255)/4 dBFS (0=Mute) AES_OUT6_L_LEVEL 0x0A 0x0860 0xFF AES1 OUT channel left level...
  • Page 28 Albalá Ingenieros | Manual DEF2008C01 L2R_IN_5_PRES 0x03 0x10 There is a valid audio signal in channel 5 of L2R IN 1=OK, 0=Fail L2R_IN_6_PRES 0x03 0x20 There is a valid audio signal in channel 6 of L2R IN 1=OK, 0=Fail L2R_IN_7_PRES...

  • Page 29: Glossary

    Albalá Ingenieros | Manual DEF2008C01 5. GLOSSARY AES/EBU This acronym covers the combined AES and EBU standard for transmission of digital audio. The standard defines a serial interface known as AES3 as per AES, EBU 3250-E as per EBU or ITU-R BS.647-2 as per ITU. The interface originally transmitted two channels (one pair) with PCM coding with a bit depth of 20 or 24 bit and a sampling frequency between 32 kHz and 192 kHz.
  • Page 30 Albalá Ingenieros | Manual DEF2008C01 DEF2008C01...

  • Page 31: Regulations

    Albalá Ingenieros | Manual DEF2008C01 6. REGULATIONS EBU Tech. 3250-E (1992) Specificacion of the digital audio interface. See also: AES3, ITU-R BS.647-2...
  • Page 32 Albalá Ingenieros | Manual DEF2008C01 DEF2008C01...

  • Page 33: Versions

    Albalá Ingenieros | Manual DEF2008C01 7. VERSIONS Ver. Date Description 09-12-2020 Preliminary Version 09-12-2020 First version...
  • Page 34 Albalá Ingenieros, S.A. Medea, 4 - 28037 Madrid Spain +34 913274453 www.albalaing.com info@albalaing.com...

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