Purpose: To challenge the Crown's assertion that the AI will automatically shut down if anything is out of tolerance or ATC or manufacturer's specifications.
Let's suppose the Crown's expert says this about the Intoxilyzer 8000C:
"If the calibration check is outside the acceptable range, you’re not going to be able to proceed with testing."
The expert is saying in other words, the instrument is smart enough to make sure that cal. checks are foolproof, and you can't proceed with testing unless the cal. checks are within the acceptable range of 90 to 110. He or she is saying there is a failsafe mechanism and Judges will interpret the evidence that way.