Steve Anderson wrote:Harry, R702 (and it's conterpart R724) are there to limit the discharge current through the discharge transistor, they should have no effect on timing at all.
The only components involved with timing and ramp amplitude are R704/R724 and C706/C726. That's it. Nothing else.
I'm still vague about the frame and line sync of these other modes apart from the NBTVA 32-line standard. If you could post up the files you're using I'll have a look at them, the format may not be suitable for what you've built so far.
Steve A.
Hi Steve
Yes i understand those don't effect the timing ....Klass mentioned R702 adjusting it lower might stop the fly back line being visible that's what i was adjusting to day i found i didn't get a result of that so i looked into changing the value of R701 to a higher resistance in case the pulse going to it was to high for 60 line for some reason .
It did stop the fly back line being visible but i found removing the pulse to 6E altogether same result and its still rolling back into framing i don't understand why but it does .
The videos i have posted on page 1 first page half way down here Steve i am using mainly dom64 48 ... some times gary 60 line but all Doms video software to make the wav video files seem to work better on this monitor...
I would use a standard known correct format but i can only use what is about to make the higher line rates i am interested what you think looking at them .