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9341 User Manual •
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• (V 1.0) Page 7 of 22
Supported Audio Formats
Discrete AES Audio Output
The 9341 can emit 8 channels (4 pairs) of discrete AES audio on 75 ohm BNC connections. The output
clock rate of each pair is precisely locked, and derived from the input AES, or the frame reference.
Inputs and Outputs
The input and outputs of the 9341 are the following:
Inputs:
8 Analog Audio differential
Outputs:
4 dedicated AES pair output connections. (AES channels 1-8)
Signal Timing
The input AES audio rate must be 48 kHz (± 1%) nominally. There are sample rate converters on each
input that allow the use of asynchronous sources, but the rate must be 48kHz. The output clock rate will
be 48 kHz as defined by the AES input, or the frame video reference, depending on user selection.
In the case where DARS input is selected as the reference, the timing will be taken from BNC 10.
Consequently, to slave the output timing to a DARS audio reference, simply connect it to BNC #10 and
all other inputs will be re-sampled to match that channel.
To match the output audio clock to a video reference, select the frame reference (“Reference 1” or
“Reference 2”). The card will automatically detect any black burst or tri level format (NTSC, PAL,
1080i, 720p) and generate a 48 kHz output clock accordingly.