26AppendixVertical Output Waveform Timing Chart (2:1 interlaced frame accumulation)* The transfer stop period is included in the dummy bits.305 H 305 H1 3 5 7 9579581 2 4 6 85807.5 H 7.5 HVD287.56141 3.5 287.56142 3582Odd field (312.5 H) Even field (312.5 H)CCDoutputsignalCameravideooutputsignalOptical black portionEmptytransferOptical black portionEmptytransferVertical blankingperiod (25 H)Vertical blankingperiod (25 H)Vertical Output Waveform Timing Chart (2:1 interlaced field accumulation)* The transfer stop period is included in the dummy bits.305 H 305 H12+34+56+78+95821+23+45+67+8578+579580+581579+5807.5 H 7.5 HVD287.5287.56141 3.5 6141 3581+582Odd field (312.5 H) Even field (312.5 H)CCDoutputsignalCameravideooutputsignalOptical black portionEmptytransferOptical black portionEmptytransferVertical blankingperiod (25 H)Vertical blankingperiod (25 H)