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Re: Feb 2009 legal - the ATSC broadcast standard

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Re: Feb 2009 legal - the ATSC broadcast standard
by Bob Zelin on Jul 13, 2008 at 2:11:41 pm

ATSC DATA BROADCAST STANDARD
(INCLUDING AMENDMENT 1 AND CORRIGENDUM 1 AND
CORRIGENDUM 2)ADVANCED

http://www.atsc.org/standards/a_90-with-att.pdf


SO, to answer your question, there is no specification for IRE levels in the ATSC standard. However, there are no specifications in SMPTE 259M or SMTPE 292M for IRE levels (or mV levels) for SDI or HD-SDI levels, either. However, you still must adhere to these levels. Why? I have NO F#$%ING idea why - it's on every damn scope, and it's required by every damn station. Where does it say in SMPTE 292M that you shall not exceed 700mV of peak white material for an HD-SDI standard? Yet if you don't, you get crucified.

This is why I am being a smart ass in my answers to you - because there ARE NO CLEAR ANSWERS - if your tapes get rejected, are you going to get a lawyer, and say "your honor, we wish to sue WXYZ, becuase we adhere to the ATSC and SMPTE standards for digital transmission, and these muther f#$%ers won't let me air my tape".

Bob Zelin




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