Does anyone know if the sync pulses in the PAL/CCIR I Monochrome system the sync pulses are 0V or -0.3V ? As usual on the internet I have seen various sources saying contradictory things. Some say it's 0V and some say it's -0.3V.

Anyone who knows will get a chocolate cookie

 

Hello,

Have a look here:
http://www.kolumbus.fi/pami1/video/pal_ntsc.html
The levels are given in percentages.

This is one of the pages from this EDUCYPEDIA page on television systems:
http://educypedia.karadimov.info/electronics/television.htm

Using the wayback machine I also found this page:
http://web.archive.org/web/20120627025939/http://www.pembers.freeserve.co.uk/World-TV-Standards/

Bertus

PS PauloConstantino was banned , Today at 7:34 AM. The ban will be automatically lifted on Jan 23, 2017.

 

When i did TV servicing it was 1V p/p full signal, with 0.3 v sync tip, and 0.7v video information, 64uS sync timing between pulses.

http://martin.hinner.info/vga/pal.html

 

The video into the monitor circuits is AC coupled, so any DC voltage level in the external video signal does not matter. While clamping the back porch to 0 Vdc is very common, it was not part of a standard in the 60's and 70's (my pro video days).

ak