bel Digital Audio BM-AV2-E16SHD, Руководство пользователя

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BM-­‐AV2-­‐E16SHD
2012
Version 1.0 Page 7
Operation
Selecting sources
The input source select switch determines which source (Analogue, AES, SDI 1 or SDI 2)
is available to the Dolby decoder, speaker selectors and bargraphs. AES inputs can be at
44.1 kHz or 48 kHz sampling rate.
SDI input mode
The unit automatically detects SD, HD or 3G video and provides the video mode on the
Status display. The four SDI groups will be demuxed to give 16 audio signals.
Dolby mode
To enable the Dolby decoder, select the ‘ Independent ’ or ‘ Program ’ position using the front
panel switch. The unit will decode Dolby Digital and Dolby E from the AES inputs or
embedded audio carried in an SDI signal.
Dolby E encoding allows several separate ‘programs’ or groups of audio to be carried in
the same data stream. The program switch is provided to allow the individual programs to
be selected and their channels directed to bargraphs.
See the section entitled,
Using the program switch for more information about the Dolby
E monitoring features available.
Decoding AES inputs
Rotate the CHANNEL PAIR switch to select the input carrying the Dolby encoded audio.
The unit will automatically detect and decode the Dolby signals and display up to 8 audio
signals on the bargraphs. The type of Dolby encoding will be shown on the display.
Decoding SDI inputs
Dolby E or Dolby Digital bit-streams embedded in a pair of audio signals in an SDI stream
can be decoded with up to eight audio signals being shown on the bargraphs. The type of
Dolby encoding used will be shown on the display.
Selecting the channel pair carrying the Dolby encoded signal is achieved using the
CHANNEL PAIR rotary switch. For example, if the Dolby signal was encoded in the
second pair of audio signals in SDI Group 1 this corresponds to channels 3/4 and is
selected by rotating the
CHANNEL PAIR select switch to position 3/4.