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Introduction to the Basic Encoder
Page 1-10 Instruction Manual: evolution 5000 E57xx DSNG and DENG Voyager Encoder
ST.TM.E10076.3
Table 1.4: Video Coding Resolutions
625 Line Modes 525 Line Modes
720 pixels x 576 lines 720 pixels x 480 lines
704 pixels x 576 lines 704 pixels x 480 lines
640 pixels x 576 lines 640 pixels x 480 lines
544 pixels x 576 lines 544 pixels x 480 lines
480 pixels x 576 lines 480 pixels x 480 lines
352 pixels x 576 lines 352 pixels x 480 lines
352 pixels x 288 lines 352 pixels x 240 lines
Internal Frame Synchroniser
An internal frame synchroniser is provided to accommodate slight
differences between the incoming frame rate and that generated by the
stable reference
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used by the Encoder.
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)
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)
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(sampling rate 32 kHz or 48 kHz)
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.
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
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(SMPTE 302M).
· Dolby E Pass-through
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.
NOTES…
1. See Annex G, 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.
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To ensure broadcast quality it is recommended that the studio reference is fed to HYSNC.
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Dolby Digital (AC-3) is only available when software option M2/ESO2/AC3 is purchased.
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To achieve lip sync in all modes the audio option M2/EOM2/AUDLIN must be used