Re: Multinorm TV woes - no NTSC color display

[Linards Ticmanis <ticmanis@gmx.de>]

Alex Freed schrieb:

>> That's right.  And it doesn't modify the *frequency* at all, so
>> it would not affect detection of the color burst.
> 
> I disagree. A series capacitor is capable of "pulling" the resonant
> frequency of the quartz crystal
> by a few hundreds of Hz. 

Yes, but that adjustable capacitor we were talking about is nowhere near
the quartz (either physically or electrically), it's in a different
section of the circuit.

> That is what a cap on an A2 board does.
> The TV has a certain lock-in range. For a color burst to be recognized, the
> frequency must be within this range.

Do you know how large this range usually is?

-- 
Linards Ticmanis