Operating instructions

See also Technical Specification > SD MPEG-2 VCM > Video > Impairment Reduction.
Audio Encoding
Overview
Up to eight channel pairs can be de-embedded from the HD-SDI or SDI video input, or up to four channel pairs can come via the 15
way D-Type Audio Input connector on the cards rear panel as either balanced or unbalanced AES/EBU digital audio.
If a /SWO/DOLBY/AC3 license key is available, two audio channel pairs may be encoded in accordance with the Dolby Digital
specification.
Up to eight audio channel pairs of uncompressed audio can be encoded in accordance with MPEG-1 Layer II, subject to license
key /SWO/M1L2 for more than two channels.
Audio that has already been Dolby Digital encoded can be input, and suitably encapsulated for inclusion in an output transport
stream (pass through mode).
A total number of eight audio channel pairs can be processed of which up to two channel pairs can be encoded in accordance with
the Dolby Digital specification
Audio Input
The Pre-processing function on the VCM accepts digital audio input from either de-embedding from the HD/SD-SDI input, as a
balanced pair (110 Ω) or unbalanced input (75 Ω) from the D type back panel connector.
See Technical Specification for more details.
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