[opendtv] Re: Needle Pulse test pattern
- From: Mark Schubin <tvmark@xxxxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Tue, 25 Oct 2005 12:46:43 -0400
Not sure what a "'standard' needle pulse test pattern" is. This web
site shows the standard NTC-7 composite test signal (go to the bottom):
http://www.spectrum-soft.com/news/fall99/ntc7.shtm
I suppose the 2T pulse can be considered a "needle." Are the modulated
steps what you refer to as blocks?
The FCC composite VITS signal is almost the same thing rearranged. This
site lists almost all of the in-service insertion test signals:
http://www.tek.com/Measurement/cgi-bin/framed.pl?Document=/Measurement/App_Notes/NTSC_Video_Msmt/beyondbars.html&FrameSet=television
TTFN,
Mark
John Golitsis wrote:
>A "standard" needle pulse test pattern has a series of blocks in the
>center. I'm pretty sure I read once that the blocks are arranged
>with 100 IRE on the top, and then each successive block is half
>that. Can anyone confirm?
>
>
>
>----------------------------------------------------------------------
>You can UNSUBSCRIBE from the OpenDTV list in two ways:
>
>- Using the UNSUBSCRIBE command in your user configuration settings at
>FreeLists.org
>
>- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word
>unsubscribe in the subject line.
>
>
>
>
>
----------------------------------------------------------------------
You can UNSUBSCRIBE from the OpenDTV list in two ways:
- Using the UNSUBSCRIBE command in your user configuration settings at
FreeLists.org
- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word
unsubscribe in the subject line.
Other related posts: