Posted by Mike Kujbida on 12/23/03 11:28

Not that I can remember but it has been more than 30 years since I had all
those numbers drilled into my head and more than a few brain cells have died
since then :-)

Mike


Seattle Eric wrote:
> Dang, Kujbida..... why does 512 milliseconds ring in my head?? Is
> that any timing pulse?
>
> Mike Kujbida wrote:
>
>> AJ@spamattackk.com wrote:
>>
>>> Does anyone know the actual length of time of an NTSC video blanking
>>> interval? I've searched the web and can only find descriptions of
>>> what the blanking interval is but NOT how long it lasts.
>>>
>>> I am trying to determine the amount of time during which a video
>>> camera "does not see." I know the sutter speed will effect what is
>>> not recorded but I need to know the specific blanking interval time.
>>>
>>> Thanks if you can help with this.
>>>
>>> AJ
>>
>>
>>
>>
>> Depends if you're talking about end of video line blanking or end of
>> video field blanking.
>> Blanking pulse width (end of line) is 10.9 microseconds.
>> The vertical blanking interval (end of field) is 1271 microseconds.
>> Reference is from p. 71 of the (5.5 MB) pdf from Tektronix at
>> http://tinyurl.com/hom4
>>
>> Mike

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