mechanical woesfor plcc/dip adapter, a solution, help with clock waveform
 

i tried to install my plcc adapter only to discover that the
height clearence would not allow barely enough for dip package
height (height images follow)

so.... i used the original planned solution , that is 30 awg
kynar wires soldered direct to plcc pins, plcc sits aon small
squareof perf spacer to raise pins off PCB and then run loose
wires through dip holes and solder . (solution images follow)

iwas looking at the VFD driver clock signal (waveform) and wonder
if someone couldlook at image tell me if it needs to be
investigted and repaired ??? (wave image follows)

thanks for any useful help,
robb

is that clock signal trouble ?
 

"robb" wrote in message
...

i am troubled by ringing on leading edge of clock signal , should
i be ?

that is a 2v spike on the lower ring as the vert/div is 2v ?

what kind of problem /repair would i be looking for ?

thanks for any help,
robb

is that clock signal trouble ?
 

On Tue, 30 Oct 2007 05:57:56 -0500, robb wrote:
"robb" wrote in message
...

i am troubled by ringing on leading edge of clock signal , should
i be ?

that is a 2v spike on the lower ring as the vert/div is 2v ?

what kind of problem /repair would i be looking for ?

thanks for any help,

Well, obviously one of the lines is ringing. Which pin is it? Is it
one of the long wires? Maybe try a ferrite bead on the line that's
ringing?

If it's just a clock, it might be doing no harm, but it sure does
look icky. ;-)

Good Luck!
Rich