In response to Ralph on the Officiating.Com discussion board,

I am the State Rules Interpreter for Indiana.
I have been an official for 30 years. No there is no set time stated in the Rules Book on reaction time. The Case Book & Manual has a statement on Page 18, #7. "The amount of reaction time allowed will vary depending upon the circumstances".
Only time spent with veterans (officials & coaches) and time spent on the mat will you really learn how to become a good official. Never quit learning how to improve. Having a sense of humor and common sense is the topping in becoming a good official.
Yours in good sportsmanship.
Jim Beeson/Indiana