1     Performance
requirements
 2     Use for conveying composite signals
 3     Conditional access
 4     Upward extensibility
 5     Other applications
 6     System complexity
 7     System availability
 8     Associated sound signals
Annex 1  Principal elements of the 4:2:2 standard as
given in Recommendation ITU-R BT.601 (Part A)
Annex 2  Further information relating to failure
characteristics and recovery time