[Test-Equipment] HP3311A with

[Barry]

> > My 3311A gives very non-linear curves on the high
> range (100KHz to 1MHz).  Triangle waves look more like a sine wave and
> square waves aren't square (the leading edge is very curved compared to the
> falling edge).>
> > Anyone seen this before and have an idea of what's
> wrong?  Power supply (+/- 18V) output looks pretty good (low but within
> tolerance) with ripple (within tolerance I think).>
> > Any ideas what to look for?
> 
> I'm thinking someone put the wrong Op-Amp in to fix a problem.
> Check the type numbers closely.
> 
> -- 
> Ron - KA4INM

>From what I can tell, unless it's a plug-in op-amp, it's never been modified but I'll double check.

Thanks!
Barry - N4BUQ