Cobalt Digital COMPASS 9381 HD_SD-SDI Timecode Inserter - Manual (Page 12)

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9381 Functional Description
1-8 9381 PRODUCT MANUAL 9381-OM (V4.3)
This function checks for any existing AFD code within the received video
input. If a code is present, the code is displayed. When used in conjunction
with a separate downstream card capable of providing AFD-directed scaling,
the image can in turn be scaled in accordance with the AFD coding embedded
by this card.
The function also allows the selection/changing of the AFD code ancillary
data line number for the outputted AFD code.
Audio Processor Description
The audio processor operates as an internal audio router. The router function
chooses from the following inputs:
• 16 channels of embedded audio from the SDI video input
• Four independent internal tone generators (described below)
• Internal down mix and mono mixer outputs (described below)
• Digital silence (mute) setting
The router function provides up to 16 channels of embedded audio on the SDI
OUT outputs. The router acts as a full audio cross point. Each of the 16
embedded output channels can receive signal from any one of the 16
embedded input channels, four internal tone generators, or the down mix left
and/or the down mix-right, or mono mixer outputs. Unused output channels
can be mapped to a “Silence” source. Each output also provides gain
adjustment and selectable polarity inversion.
Output audio rates are always 48 kHz locked to output video. (Embedded
audio must be nominally 48 kHz input; 32, 44.1, 96, and 192 kHz inputs are
not compatible with the 9381.) Embedded output audio is always precisely
synchronized with the output video.
As set with the default settings, the routing between embedded audio channels
is basic 1-for-1 for the 16 embedded audio channels (with embedded Ch 1
being embedded to embedded Ch 1 at the SDI output, and so on). Other
sources and/or destinations for each channel are selected using the card edge
controls or a remote control system.