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Technical Specification
Reference Guide: TT128x High Definition Professional Receiver/Decoder Page B-5
ST.RE.E10141.5
It is possible to output the compressed Dolby Digital stream from the
digital audio output, allowing it to be decoded to 5.1 channels by an
external Decoder.
Sampling rates (kHz): 32, 44.1, 48
Maximum compressed data rate: 640 kbit/s
NOTE…
Support for Dolby Digital decoding requires approval and licensing from Dolby. The compressed Dolby
Digital stream is not embedded on the SDI output.
B.2.4 Linear Audio
The IRD is able to receive audio data in the form of linear PCM digital audio
data, up to 20 bits in resolution, and makes it available for output as either
analogue or digital audio.
B.2.5 DTS Audio
The IRD is able to detect DTS audio Modes 1, 2 or 3. DTS audio is
presented in AES format at the digital audio output.
B.3 Audio Output Format
B.3.1 General
The IRD provides an independent stereo pair output for each audio
channel. Analogue audio is always output and the following digital audio
formats can be chosen from the User Interface and remote control
interfaces:
• AES3 format
• Dolby Digital (AC-3) compressed format
Digital Audio embedded into the HD Serial Digital Video Output is always
output using the DIDs for channel mapping specified at the user interface.
B.3.2 Analogue Audio
The IRD supports level control of the audio outputs. Independent control of
each output of each stereo pair is provided via the User Interface and
remote interfaces.
Audio output connector type: 2 x 9 way female D-type
Output level: +18 dBm nominal clipping level. Selectable in range +12 to
+24 dBm.
Output impedance: 50 Ω (nominal).