DAI-3206 270Mb/s SDI Digital & Analogue Audio Inserter
DAX-3206 270Mb/s SDI Digital & Analogue Audio Extractor

DAI-3206

270 Mb/s SDI Digital & Analogue Audio Inserter

Features:

Standard 75 Ω 270 Mbit/s SDI input
Inserts audio � either 2 AES signals containing 2 channels each, 4 analogue channels or a combination of AES and analogue pairs
110 Ω (standard) or 75 Ω AES inputs
Selectable re-sampled or non re-sampled modes
Supports SMPTE 272M-A synchronous 48 kHz insertion
(resampled mode)
Supports SMPTE 272M-AD asynchronous 48 kHz insertion (non resampled mode)
20 bit audio supported
Z, C, U data preserved
Automatic EDH correction and/or insertion
Ability to replace existing embedded audio
Supports 525 & 625 line formats
Indicators / external alarms for loss of carrier & audio
Automatic SDI input cable equaliser to 250 m
Two 270 Mb/s SDI outputs for connection to additional units

General

The DAI-3206 is a high performance audio embedder for 270 Mbit SDI video signals. It supersedes the earlier DAI-3200 audio embedder.

Existing embedded data packets may be optionally removed and/or replaced via link settings on the PCB.

Each DAI-3206 is capable of inserting one audio group (2 AES signals, 4 analogue channels or combination of AES and analogue pair channels) into an existing SDI video stream. Group position selection is made by the front panel local control. Note that when inserting 2 AES streams, both channels must be frequency locked to each other. Analogue audio is automatically locked to the other AES signal, if present, or else to the SDI video input.

The DAI-3206 supports AES/EBU synchronous/ asynchronous 48 kHz, 20-bit audio data packets.
An audio presence indicator is provided for each input. If one AES or analogue audio pair is missing then those particular channels are set to zero. If both AES and/or analogue audio pairs are missing (dependent on mode selected), then no packets are inserted.

The DAI-3206 complements the DAX-3206 audio extractor.

The DAI-3206 is fabricated in IRT's standard Eurocard format and may be housed in a variety of IRT Eurocard frames alongside other standard modules.

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DAX-3206

270 Mb/s SDI Digital Audio Extractor

Features

Standard 75 Ω 270 Mbit/s video input
Standard 75 Ω 270 Mbit/s video output
Extracts embedded audio (Supports 48 kHz Synchronous and Asynchronous level A & D audio packet decoding)
Supports 525 & 625 line standards
Indicators / external alarms for loss of carrier & audio
Automatic input equaliser to 250 m
Four high quality analogue audio outputs
Two 110 Ω balanced or 75 Ω unbalanced AES outputs
IRT Eurocard format

General

The DAX-3206 is a high performance embedded audio extractor for 270 Mbit SDI video signals. It is primarily designed to operate with IRT's DAI-3206 digital audio inserter but will work on any embedded SDI source.

A typical SDI signal may contain up to eight audio pairs arranged in four groups. Each DAX-3206 is capable of extracting one audio group (2 AES / 4 analogue) from those available. Selection is made via a front panel local control switch.

The DAX-3206 supports AES/EBU synchronous and asynchronous audio at 48kHz, 20-bit audio data packets.

Both analogue and digital audio outputs are provided so that the one module may be used for all applications in monitoring and processing.

The use of digital audio filtering and 20-bit digital to analogue converters produce studio quality analogue audio and the AES/EBU digital interface allows digital interconnection in either balanced or unbalanced formats.

An audio presence indicator is provided for each group output. If no audio is detected the corresponding output is muted.
The DAX-3206 complements the DVC-4112 SDI to analogue video converter for full conversion of SDI signals to analogue video and audio.
The DAX-3206 comes configured standard with 110 Ω balanced AES/EBU outputs. 75 Ω unbalanced outputs are available by insertion of links on the rear assembly.

The DAX-3206 is fabricated in IRT's standard Eurocard format and may be housed in a variety of IRT Eurocard frames alongside other standard modules.

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Digital A/V Products

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Analogue Audio

Analogue Video

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Digital Audio

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Digital Audio (AES / EBU)

Digital Video (270Mb/s / ASI / SDI / HD)

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Analogue to Digital

Digital to Analogue

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Analogue Video

Digital (ASI / SDI / HD)

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Relay

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