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Page 24
SR-112 User Manual (Rev 4.01)
aPPENDIX D: LONGITUDINaL BIT assIGNMENT - sMPTE & EBU
Each word of LTC is divided into 80 equal segments (bits), numbered 0 to 79.
These bits are mainly grouped by four into Binary Coded Decimal words to
form decimal numbers (0 to 9). Twenty six of these bits are assigned to the Time
address information (frames, seconds, minutes and hours); thirty two are assigned
to the Binary Group information (user bits); sixteen are used for sync (sync word)
and the remaining six are used for flags or are still unassigned.
sMPTE has a frame rate of 30 fr/s and EBU 25 fr/s but both time codes have the
same 80 bits per word. Most bits are the same. some of the flags however are
different.
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