On 3/31/16 7:53 PM, hewpatek@... [TekScopes] wrote:
AFAIR, the LVPS +5 V output uses a pi filter (2 C's to gnd, 1 L
between them). Did you check / replace all (output) caps in the LVPS?
It may be remaining LVPS switching noise feed-through you're seeing.
I replaced one of these caps last year in order to get the scope working
at all.
It's almost certainly LVPS switching noise I'm seeing.
Is it time for E=mc^2? (Efficiency = mass cap change)
I guess the +/- 1 pixel noise is normal vertical noise digitised,
including normal (1 digit) digitising uncertainty.
Yeah. I was just hoping for less noise on a 0V signal.
Raymond.
--
Jeff Woolsey {{woolsey,jlw}@jlw,first.last@{gmail,jlw}}.com
Nature abhors straight antennas, clean lenses, and empty storage.
"Delete! Delete! OK!" -Dr. Bronner on disk space management
Card-sorting, Joel. -Crow on solitaire
