http://www.ncaa.org/about/resources/media-center/news/ins... High points:
The experimental rule, which will be in effect only during conference play, can be used when an official believes that an incorrect call was made on a restricted area ruling, or when a head coach makes an appeal for a review.
If a coach appeals and the instant-replay review determines the official’s call was correct, the appealing coach’s team will be charged a timeout. If the call is reversed on appeal, no timeout will be charged.
The experimental rule can be applied only during Big Ten and Mid-American conference games under the following conditions:
Instant replay can be used only in the last two minutes of the second half or the last two minutes of any overtime period.
Instant replay may be used only when an official has made a block/charge call in or around the restricted area arc, and the decision is based on whether the defensive player was in or outside the arc. Instant replay may not be used on no-calls.
Any review, whether by the officials or a coach’s appeal, must be recognized and corrected before the ball next becomes live.
Given that MAC games have fouls called like the refs get paid by the foul to do so, I can see this dragging out games significantly.