TANDBERG E5714 DSNG Voyager, Reference Manual

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Introduction to the Basic Encoder
Reference Guide: E57xx DSNG and DENG Voyager Encoder Page 1-9
ST.RE.E10076.3
Output on Video Loss
The Encoder can be software-configured to show, in the event of video
input loss, either:
•
A test pattern (with or without ident text)
•
A freeze frame (with or without ident text)
•
Cut to a black screen (with or without ident text)
•
Drop the video PID
•
Turn off the ASI output of the Encoder
1.3.2 Audio Encoding
General
Audio can be encoded to:
•
MPEG-1 Audio (layer 2) standard (sampling rate 32 kHz or 48 kHz).
•
Dolby Digital (AC-3)
15
(sampling rate 32 kHz or 48 kHz)
16
.
Output bit-rate is selectable in the range 32 kbit/s - 384 kbit/s
(dependent on configuration) for MPEG-1 Audio (layer 2) and
56 kbit/s - 640 kbit/s (dependent on configuration) for Dolby Digital
(AC-3) coding mode selectable between 1/0 and 2/0.
•
Dolby Digital (AC-3) pre-encoded audio (IEC 61937 specification) in
pass-through mode is also available (it only operates at 48 kHz). This
is where an audio stream has already been encoded externally, prior to
entering the Encoder.
•
Linear PCM
16
(SMPTE 302M).
•
Dolby E Pass-thru
16
•
DTS Pass-thru
16
.
NOTES…
1. See
Annex F, Audio Modes for details of setting up the audio.
2. MPEG-1 audio sampling rate is fixed at 48 kHz when controlled from the front panel.
Audio Inputs
The standard audio input is:
•
AUDIO IN – 15-way male D-type - software selectable balanced
analogue or digital AES/EBU, with AES/EBU on left only. A break-out
cable is supplied which plugs into this connector and provides a more
convenient means of connecting the audio inputs via five connectors.
There are four XLR female connectors, with the fifth cable being a BNC
which provides an AES/EBU 75 Ω digital reference output.
•
Alternatively, audio can be input embedded as AES/EBU on the serial
digital interface (SDI). In this mode a maximum of four stereo pairs
can be extracted from any two Data Identifiers (DIDs). Audio may be
converted to either of the standard output sampling frequencies,
32 kHz or 48 kHz, by use of the built-in asynchronous sample rate
converters. This applies only to audio which is not pre-encoded.
15 Dolby Digital (AC-3) is only available when software option M2/ESO2/AC3 is purchased.
16
To achieve lip sync in all modes the audio option M2/EOM2/AUDLIN2 must be used.