Page!8!! ! Sync-One2!User!Guide!
Advanced'Operation'
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A! more! advanced! use! of! Sync-One2! is! within! the! Professional! AV! and! Post! Production! editing!
environments,!where!some!of!the!additional!features!come!into!play.!
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Within! post! production! or! video! editing,! workflow! is! based! around! whole! video! frames,! rather! than!
time!in!milliseconds.!!Within!Sync-One2!you!can!set!a!frame!rate!between!1!and!99!frames/sec.!!Whilst!
some!frame!rates!are! fractional,! for! example! 29.97,! Sync-One2!uses!whole! frames,! which! is! accurate!
enough.!!Simply!pick!the!closest!whole!frame!rate!to!the!actual!one!of!the!system!you!are!working!with.!
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With!a!frame!rate!selected,!the!Measurement!Mode!displays!the!readings!in!milliseconds!and!in!frames,!
at! the! chosen! frame! rate.! ! However,! more! importantly,! when! performing! analysis! within! the! ‘Show!
Stats’!menu!item!the!readings!for!average!and!span!are!also!given!in!frames,!as!is!each!of!the!memory!
buffers.!
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Using!the!same!readings!taken!in!the!Basic!Operation!example!above,!with!a!frame!rate!set!the!stats!
display!will!alternate!between!the!reading!in!milliseconds!and!frames.!!So!in!this!case!the!frame!rate!set!
is!25!frames/sec,!the!span!is!00.1!frames!with!the!average!reading!of!+0.80!frames.!
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The!value!below!the!memory!position!indicates!if!the!readings!displayed!are!in!milliseconds!or!frames,!
and!the!frame!the!rate!entered.!!The!display!will! start! to! alternate! a! couple! of! seconds! after! a! given!
memory!position!is!shown.!!When!moving!between!the!memory!positions,!the!readings!are!shown!in!
milliseconds!but!will!start!to!alternate!once!a!given!memory!position!has!been!shown!for!a!couple!of!
seconds.!
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For!post!production!work!having!the!reading!in!frames!make!it!much!easier!to!correct!the!issue!than!
just!milliseconds.!!When!the!frame!reading!is!below!10!frames!the!resolution!is!to!1/100th!of!a!frame,!
above!10!frames!resolution!is!to!1/10th!of!a!frame.!!
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Manually'offsetting'readings'
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There!are!situations!where!being!able!to!enter!a!known!offset!can!also!help!understand!readings!where!
equipment!delays!are!known!in!advance.!!For!example,!should!a!display!have!a!known!processing!delay!
of!45!milliseconds,!when!the!readings!are!taken!the!best!obtainable!result!would!be!the!audio!leading!
the! video! by! 45! milliseconds! (+45ms).! ! However,! should! a! user! offset! be! applied! of! -45! milliseconds,!
then!this!offset!is!automatically!taken!into!account!within!the!measurements!and!statistics!generated.!!
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