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DAC3000C02

DUAL AES/EBU DIGITAL AUDIO TO ANALOG AUDIO CONVERTER

Version 1.0

Albalá Ingenieros, S.A.

Medea, 4 - 28037 Madrid - Spain

Содержание DAC3000C02

Страница 1: ...DAC3000C02 DUAL AES EBU DIGITAL AUDIO TO ANALOG AUDIO CONVERTER Version 1 0 Albalá Ingenieros S A Medea 4 28037 Madrid Spain 10 November 2016 Albalá Ingenieros S A All rights reserved ...

Страница 2: ...DAC3000C02 ...

Страница 3: ...n 12 3 5 1 Selection of coaxial or twisted pair cabling for the digital input 13 3 5 2 Equalizer selection 13 3 5 3 MUTE selection 13 3 5 4 Selection of de emphasis and sampling rate 13 3 5 5 Output level adjustment 14 3 6 Installing the module in the mounting frame 15 3 7 Interconnection 16 3 7 1 Digital audio connections 17 3 7 2 Analog audio connections 17 4 OPERATION 19 4 1 Front panel descrip...

Страница 4: ...DAC3000C02 ...

Страница 5: ...with the standard sampling rates of 32 44 1 and 48 samples s in each digital stream Operation with the validity bit permits muting of the converter output when an erroneous stream is received or when the validity bit is 1 The front panel contains two LEDs to indicate the presence of errors one for each AES EBU stream The output level adjustment is performed with program jumpers in 1 dB steps The g...

Страница 6: ...g up to 150 meters of Belden 1800A or RG59 cable Electronically balanced analog audio outputs Selectable 50 15 us de emphasis for 32 44 1 and 48 kHz sampling frequencies Full scale level adjustment between 15 and 24 dBu in 1 dB steps with internal jumpers Front panel indicators for invalid digital streams One UR3000 mounting frame can house up to 12 DAC3000C02 modules If power supply redundancy is...

Страница 7: ...Albalá Ingenieros Manual DAC3000C02 1 3 Block diagram 7 ...

Страница 8: ...Albalá Ingenieros Manual DAC3000C02 DAC3000C02 8 ...

Страница 9: ...ise ratio S N Unweighted 105 dB measured with a 1 kHz 60 dBFS tone 20 Hz to 20kHz Harmonic distortion plus noise THD N 95 dB measured with a 1 kHz 0 dBFS tone fs 48 kHz output loaded with 600 Ω Crosstalk between channels 95 dB measured at 1 kHz AES EBU digital audio signal input Connector Plug in terminal 3 81 mm pitch or BNC Impedance 110 Ω for plug in terminal 3 81 mm pitch Impedance 75 Ω for BN...

Страница 10: ...Albalá Ingenieros Manual DAC3000C02 DAC3000C02 10 ...

Страница 11: ...ns This equipment must be connected to a mains outlet with a protective earth connection Never use extension cords that do not have protective earthing connection The lack of an effective electrical connection between the ground pin in the mains input connector of the equipment and the protective earth of the electrical power distribution can cause serious harm All modules of the Albalá Ingenieros...

Страница 12: ... 3 4 Power considerations The UR3000 and UR3100 mounting frames can house as many DAC3000C02 modules as will fit in them 3 5 Module configuration The DAC3000C02 module includes program jumpers that should be set before the unit is installed into a mounting frame These jumpers configure the following The type of cabling used for the input connection Selection of the equalization based upon the leng...

Страница 13: ...m should be used for cable runs under 100 m whereas position 100m should be used for cable runs between 100 and 200 m 3 5 3 MUTE selection The digital to analog converters include a mute control input that disables their operation If desired the converter can be muted when the AES EBU stream contains information that is not audio or when the digital signal received has errors The DAC3000C02 uses t...

Страница 14: ...should be configured for the range of sampling frequencies selected greater than or less than 50 kHz 3 5 5 Output level adjustment Use J5 and J2 to select the full scale level of the L and R channels of STREAM 1 Positions for 15 dBu and 22 dBu are shown in the silkscreening The program jumpers provide gain steps of 1 dB and the potentiometer located next to the program jumpers provide a fine adjus...

Страница 15: ...s mating connectors Check that the orientation of the board is correct by looking at the placement of the text printed on it according to the illustration below Details for installation of the module in 3 RU mounting frames Details for installation of the module in 1 RU mounting frames 4 Attach the rear board to the mounting frame with two M3 metric screws and tighten 5 Verify that the main board ...

Страница 16: ...r board connector layout Rear view of the DAC3000C02 The DAC3000C02 module provides two digital audio inputs via BNC STREAM 1 IN and STREAM 2 IN two digital audio inputs via two wire shielded cable STREAM 1 LOOP IN and STREAM 2 LOOP IN and four analog audio outputs OUTA L OUTB R for STREAM 1 and OUTA L OUTB R for STREAM 2 The rear interconnection board is not designed to withstand mechanical stres...

Страница 17: ... block connectors the preferred cable type is two wire shielded with 110 Ω of characteristic impedance The GND terminal allows grounding of the cable s shielding When connecting to the the BNC digital audio inputs the cabling used should be coaxial with 75 Ω of characteristic impedance 3 7 2 Analog audio connections The analog audio outputs are balanced use 3 81 mm pitch terminal block connectors ...

Страница 18: ...Albalá Ingenieros Manual DAC3000C02 DAC3000C02 18 ...

Страница 19: ...ont panel indicators of the DAC3000C02 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 Front panel of the DAC3000C02 The panel contains the following elements 19 ...

Страница 20: ...contains no errors The converter includes a program jumper for each output channel that can silence that channel when the converter receives as signal that is not valid for conversion As long as the MUTE function is not activated the converter will output the digital information present in the corresponding AES EBU stream The DAC3000C02 does not output any signal for channels where the MUTE functi...

Страница 21: ...with linear PCM encoding The physical interface defined by the original AES EBU standard was a 110 ohm balanced line The AES3 id standard later defined the physical interface as a 75 ohm coaxial cable BNC Bayonet Neill Concelman connector CRC Cyclic Redundancy Check Coding used to confirm the bitstream integrity For 3G HD SDI signals each line of video includes coding for confirmation that the lin...

Страница 22: ...Albalá Ingenieros Manual DAC3000C02 DAC3000C02 22 ...

Страница 23: ...ommended practice for digital audio engineering Serial transmission format for two channel linearly represented digital audio data See also EBU Tech 3250 E ITU R BS 647 2 EBU Tech 3250 E 1992 Specificacion of the digital audio interface See also AES3 ITU R BS 647 2 23 ...

Страница 24: ...Albalá Ingenieros Manual DAC3000C02 DAC3000C02 24 ...

Страница 25: ...Albalá Ingenieros Manual DAC3000C02 7 VERSIONS Ver Date Description 0 0 13 06 2013 Preliminary Version 1 0 10 11 2016 First version ...

Страница 26: ...Albalá Ingenieros S A Medea 4 28037 Madrid Spain 34 913274453 www albalaing com info albalaing com ...

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