«SMPTR Made Simple» [archive du ], TimeLine Vista, Inc., (consulté le ) : «The time code reader uses the direction sense bits to determine whether the tape is running forward or backward.», p.11
«SMPTR Made Simple» [archive du ], TimeLine Vista, Inc., (consulté le ) : «The time code reader uses the direction sense bits to determine whether the tape is running forward or backward.», p.11