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I/O, Clocking, and Reference
Creating an Output Group
The steps for creating an output group are identical to creating an input group, but with the Outputs menu.
Routing Audio to the Program Output
Once the first output group has been created and saved, drag the output audio lines from the group to the desired
program output, then click to save.
Latency and Delays
Latency through the LA-5300 varies depending on which inputs and outputs are used and whether or not SRCs are
enabled. In any case, it will be necessary to compensate for any latency incurring in the encoding process. Please
see the Specifications section of this manual for latency measurements for the current software version.
To compensate for the processor's latency and avoid lip sync issues, an SDI video delay is provided in the Delays
sub-menu of the I/O menu (5-7A). Click on the millisecond and/or microsecond fields in the Video Delay
section (5-7B) and type in the required value. If the output needs to be delayed by an even frame (the value of
which will vary depending on frame rate), simply enter that number.
Note:
Entering an even frame value will result in a situation where it is necessary to add additional audio delay to
the AES67 and AES-3 outputs so that they match timing of the SDI output signal. This can be accomplished
by setting the Audio Delay (5-7C) to a value equal to the difference between a full frame and the latency of
the unit.
Figure 5-7: The Delays menu.
Chapter 5 | 20
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