TANDBERG E5780, Справочное руководство

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Options and Upgrades
Reference Guide: evolution 5000 E5780 and E5782 Encoder Page 3-11
ST.RE.E10135.4
3.4 Advanced Audio Coding Option (M2/EOM2/ADVAUD)
3.4.1 Overview
The Advanced Audio Coding option module supplements the audio encoding functionality of
the Encoder to enable it to be used as a drop-in replacement for other Encoders. It can
encode four stereo audio pairs (two-channels) or one multichannel (six-channels -
multichannel
MPEG-2 AAC (ISO/IEC 13818-7) (LC)) and one stereo pair (two-channels). No other
combination of channel inputs is permitted.
The module can receive up to four simultaneous, independent AES3-2003 inputs on four 75
Ω
BNC coaxial AES3 inputs (compliant to AES-3id-2001) located at the Encoder’s rear panel. It
can also accept four AES3 inputs from the Encoder’s backplane to permit the use of
embedded audio. Each input supports 16, 20 and 24-bit resolutions and 48 kHz sampling and
is capable of passing 16, 20 and 24 bit samples to the audio encoders. 24 or 20 bit input
samples can be rounded to 16 bits.
The module accepts a PCR clock of 27 MHz in the form of a 3 wire serial interface. The inputs
are synchronised to the system reference clock through the use of phase locked sample-rate
converters prior to encoding.
3.4.2 Assembly
Rear Panel
Figure 3.2: Advanced Audio Coding Option (M2/EOM2/ADVAUD)
The Additional Audio Coding option module comprises Assembly S14048 and Card S13600.
See
Table 3.1 for the slots that it can be installed in.
AES x Connector
Connect the audio input cables to the appropriate AES input connectors.
AES 1 AES 2 AES 3 AES 4
AES REF
A
Analogue Composite Video
Serial Digital Interface
HD Serial Digital Interface
Audio Input
Encoder
Additional Audio Option
AES 1
AES 2
AES 3
AES 4
AES REF
Four stereo audio pairs
(two-channels)
or one multi-channel (six-channels)
and one stereo pair (two-channels).
27 MHz Reference Signal
Output Transport Stream
Output Transport Stream
Output Transport Stream
COMP VIDEO
SDI IN
HD SDI IN
AUDIO IN
ASI OUT 1
ASI OUT 2
ASI OUT 3