Chapter 4 - O perational H ow-Tos
How t o U se V ertical I nterval T ime C ode
Vertical I nterval T ime C ode ( VITC) i s t ypically u sed i n t ransmissions t hat r equire t ime c ode
from t he o riginating s ource t o b e p reserved. I t w as o riginally d eveloped f or a nalog
television r ecording s ystems, b ut h as n ew s tandards f or t ransmitting i n d igital s ystems
(SMPTE-12M-1 / S MPTE-12M-2). P reserving t ime c ode i s b eneficial f or f uture e diting a nd
playback o f c aptured m aterial.
EN-XX-series d evices c an p ass V ITC a ncillary d ata a s p art o f t he A NC P ID. T he A NC P ID i s a
separate P ES l ocated i n t he t ransport s tream. A dditionally, t ime c ode w ithin t he G OP o f t he
video w ill a lso b e a djusted a t e ncoder s tart u p t o m atch t he i ncoming a ncillary V ITC.
VITC d ata p ackets w ill c ontain a D ID o f 0 x60 a nd a n S DID o f 0 x60. T he V BI t ab c ontains a n
SDI a ncillary i nspector t hat a llows u sers t o v iew A NC d ata p resent a t t he i nput. T his t ab
can b e v iewed f or v erification o f p resent a ncillary d ata a t t he S DI i nput.
To e nable V ITC p assthrough:
Step
Action
1
On t he
V BI T ab
<SDI>.
2
On t he
P ID T ab
"ANC P ID A ctive".
i n t he W eb G UI C ontrol A pplication, c onfigure t he " VBI S ource" f or
i n t he W eb G UI C ontrol A pplication, s elect t he < On> s etting f or