Hi Steve and Andy
Youll only be able to see the side bands if
the sample is long enough to encompass an integral number of
modulation periods.
(and an integral number of carrier periods.
The two should be integrally related to minimize artifacts.)
The more info that gets sampled, the better the resolution.
Hence is why the default FFT size is 262k, but of course
you can set that to any thing needed.
Al D.
On 12/10/2013 06:11 PM, Andy wrote:
When some sort of modulation is going
on, energy gets transferred from the signal at the peak, into
the sidebands around it. ?So as the amount of modulation gets
worse, I think I would expect to see the peak shown by the FFT
to decrease, while the width increases.
--
AC2CL
I do not think there is any thrill that
can go through the human heart like that felt by the inventor as
he sees some creation of the brain unfolding to success...
Such emotions make a man forget food, sleep, friends, love, everything.
- Nikola Tesla
