[Test-Equipment] HP3311A with "issues"

[Ron Youvan]

   Barry N4BUQ wrote:

> 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