According to the Licor 7500 manual, there is a 0.186 second sampling lag in the 7500. This can be increased with an output delay parameter, so that it can be synchronized with the sampling of a sonic. I've verified that the output delays on our 7500's are set to 0.
Since the CSAT3 and Licor operate asynchronously, there is I see no advantage in further adjustment of the Licor delay to be a multiple of the CSAT3 sample period.
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