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pro bel 4429 Technical Manual

Sdi audio extractor
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Technical Manual
SDI Audio Extractor
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Summary of Contents for pro bel 4429

  • Page 1: Table Of Contents

    4429 SDI Audio Extractor Contents Introduction Installation Audio connector pin-out Installing DAC sub-boards Configuration Setting the operating mode Enabling the audio outputs Setting analogue output levels Trouble shooting Sample problems and their solutions Status monitoring Specification Ordering information Technical Manual...

  • Page 2: Introduction

    4429 Introduction The 4429 extracts up to two dual channel digital audio signals embedded in a serial digital component video signal. The basic card provides AES3 digital audio outputs in both balanced and unbalanced formats. Up to two optional DAC sub-boards are available, each providing electronically balanced programme quality analogue outputs.
  • Page 3 4429 SDI Audio Extractor The 4429 module extracts digital audio signals embedded in a video signal fully meeting the SMPTE 272M standard or the slightly different continuous format used by Sony Betacam equipment. The module can extract any one of the four groups, that is channels 1-4, 5-8, 9-12 or 13-16, but not combinations.

  • Page 4: Installation

    4429 Installation The audio extractor consists of a 4429 ICON module which uses the 30mm K4421.3 rear connector. There are five BNC connections for signal I/O and one 25 way ‘D’ type female socket for the AES/EBU and analogue audio output. The 30mm rear connector requires three slots in a 3U 1050 ICON frame and one module position in the 1U 1051 ICON frame.

  • Page 5: Audio Connector Pin-Out

    4429 SDI Audio Extractor Audio connector pin-out Audio output connector 25 way ‘D’ female socket Function Analogue 1 - (AES 1A) Analogue 1+ (AES 1A) GROUND Analogue 3 - (AES 2A) Analogue 3+ (AES 2A) GROUND GROUND GROUND Analogue 2- (AES 1B)

  • Page 6: Installing Dac Sub-Boards

    4429 Installing DAC sub-boards One or two 5635 DAC sub-boards can be fitted to the standard 4429 extractor at any time to provide analogue audio outputs. DAC 1 provides analogue versions of the first stereo pair, whilst DAC2 provides analogue versions of the second audio pair from the selected group.
  • Page 7 4429 SDI Audio Extractor chapter 2 Technical Manual...

  • Page 8: Configuration

    4429 Configuration Setting the operating mode The rotary HEX switch, SW1, mounted on the front edge of the module sets the audio group to be extracted as detailed in the table below. The asynchronous mode should be used in situations where the embedded AES3 audio maybe unlocked.

  • Page 9: Enabling The Audio Outputs

    4429 SDI Audio Extractor Enabling the audio outputs AES output The AES output of the extractor maybe enabled/disabled by jumper PL2 and is described in the following table. Enabling the AES output Position Function Enable Enables the AES output Disable...

  • Page 10: Setting Analogue Output Levels

    4429 Setting analogue output levels The analogue output levels of each 5635 DAC sub-module can be adjusted with RV1 for the right channel and RV2 for the left channel. The adjustment range is +15dBu to +24dBu for Full Scale Digital (maximum digital word or clipping). Standard factory setup is +18dBu=0dB, FSD for Europe and +24dBu=0dB, FSD for the US.
  • Page 11 4429 SDI Audio Extractor chapter 3 Technical Manual...

  • Page 12: Trouble Shooting

    4429 Trouble shooting Once configured, the module should not need further operational adjustments unless signal or system requirements change. However, status LEDs are provided to assist in the unlikely event that problems with configuration or module performance arise. In normal operation the following green LEDs should be illuminated, VD, AD, RA1, RA2, Lock1, Lock2 and Power.
  • Page 13 4429 SDI Audio Extractor The green read FIFO LEDs, RA1 and RA2 are not illuminated • RA1 and RA2 indicate the presence of either of the dual audio channels to be extracted from the chosen group • if audio present LED, AD is lit, a module fault is indicated The green lock LEDs, LOCK 1 and LOCK 2 are not illuminated •...

  • Page 14: Status Monitoring

    4429 Status monitoring The module will provide the following information to the status monitoring controller, if fitted: • module present • video present • embedded audio present • audio 1 PLL locked • audio 2 PLL locked • DAC 1 fitted •...
  • Page 15 4429 SDI Audio Extractor chapter 5 Technical Manual...

  • Page 16: Specification

    4429 Specification Inputs Video: One SDI to SMPTE 259M-C (270Mb/s)with embedded audio to SMPTE 272M level A (locked 48kHz) or level D (unlocked 48kHz). Fully compliant or embedded on all lines. Impedance: Return Loss: >15dB, 10MHz to 300MHz Equalisation: Up to 200m Belden 8281, PSF1/2 or equivalent...
  • Page 17 4429 SDI Audio Extractor chapter 6 Technical Manual...

  • Page 18: Ordering Information

    4429 Ordering information Part number Description ICO-4429-3xyz SDI Audio Extractor, 30mm Where number of stereo D to A converters fitted 0 (none) , S (single), D (dual) analogue output level in dBu for full scale yz = digital 15, 18, or 24 ( 00 if no DACs fitted)

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