Owner`s manual
CDI-9321 User Manual •
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• (V 0.5) Page 9 of 23
Analog Audio
The 9321 supports 8 channels differential analog audio. The analog audio is encoded in such a way as
to make +24 dBu (analog) equivalent to 0 dBFS (digital). Analog audio conversion can be disabled to
reduce power consumption.
Discrete AES Audio Input
The 9321 can accept 16 channels (8 pairs) of discrete AES audio on 75 ohm BNC connections. The
AES must have a nominal rate of approximately 48 kHz. Sample rate conversion is employed to
account for minor clock rate differences in the AES stream and the input video stream. However, the
card does not support AES input at 32 kHz, 44.1 kHz, 96 kHz or 192 kHz rates.
Documentation Terms
The following terms are used throughout this guide:
• “Frame” refers to the 8310 frame that houses the 9321 card.
• “Operator” and “User” both refer to the person who uses the 9321.
• “Board” and “Card” all refer to the 9321 card itself, including all components and
switches.
• “System” and “Video system” refers to the mix of interconnected production and
terminal equipment in which the 9321 operates.