Posted by Mike Kujbida on 12/23/04 11:28

The link I gave was for section 7 (Glossary & Appendices) of a booklet
titled "NTSC Systems Television Measurements" from Tektronix. Look at the
bottom of each page on my original link and you'll find page 71.
A link to all 7 sections is at http://tinyurl.com/bxnhr .
As far as the NTSC signal is concerned, a consumer camcorder has to follow
the same blanking rules as the most expensive broadcast model. CCD
charging/dumping or whatever is a completely different issue which I'm not
knowledgeable enough to comment on.

Mike


AJ@spamattackk.com wrote:
> Thanks for the link but there is no page 71 -- and there doesn't seem
> to such a page in any other of the Tektronix docs.
>
> I'm just trying to determine what a consumer digital camcorder doesn't
> see -- due to blanking or CCD charging/dumping or whatever.
>
> AJ
>
>
>
> On Sat, 1 Oct 2005 23:42:47 -0400, "Mike Kujbida"
> <kujfamNoSpam@xplornet.com> 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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