Innovate Motorsports OT-2 SDK - Manual (Page 33)

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A separate diagram shows how low priority channels
fit into the loop. Only one is read
each time around.
The manual then shows this scheme in actual practice with a log from a Chevy Suburban:
The ECU can typically keep up at MTS rates with about 3-4 channels. Using the ‘low
priority’ mechanism lets some critical channels, like spark advance and RPM, be tracked
at higher resolution (normal priority), while lower priority measurements are allowed to
get ‘steppy’ (low priority).