d03e70c9_JWX__Name
[Description] 40 lines consisting of 25 milliseconds of white level and 475 milliseconds of black level. [Time] 20 seconds [Comment] This sequence allows the receiver to acquire horizontal synchronization. Some non-U.S. locales use 60 lines/30 seconds. [Name] 
Synchronization
T u n e
S t a r t T o n e
S y n c h r o n i z a t i o n
I m a g e d a t a
S t o p
T a i l
JWX
Name