[ARC5] Visual alignment of BC-454

[Kenneth G. Gordon]

On 23 May 2013 at 9:36, Dennis Monticelli wrote:

> Ken,
> 
> To be more clear:  The asymmetry to which I was referring was the the
> freqeuency hump in the passband, not the asymmetry of the retrace.

Yes. I figured that out, thanks.
 
> Ian is right in stating that the retrace should look like a mirror
> image of the forward trace.  Something is going non-linear during the
> retrace.  I think that is a separate issue from the passband hump.

Well, IMHO, IFF the sweep is REALLY a ramp or true sawtooth, rather than 
a triangle, the retrace should show essentially a very weak straight line.

A triangle wave or a sine wave would show two traces, one the mirror-image 
of the other.

My sweep output is almost a ramp. The return-to-zero end is NOT a vertical 
line. It a quite finite, and then some, return to zero. 

And the ramp itself is not straight either. In fact, the slower the sweeps, the 
more curved the ramp actually is. 

As I said, in order to get what is really there, I need a much better 
ramp-generator...one with almost instant return-to-zero, and with a truly 
linear ramp.

I am investigating various circuit diagrams.

Ken W7EKB