[TowerTalk] TowerTalk Digest, Vol 117, Issue 9

[Jim Brown]

On 9/4/2012 10:00 AM, Spencer wrote:
> You need a FAST rise time pulse generator with variable repetition 
> rate and pulse width. A good scope. A test setup.
> ANY Z discontinuities will cause a reflection and will show up on the 
> scope trace. 

There are several ways to skin this particular cat.  That's one of them. 
Transforming a frequency sweep is another, and has been widely used in 
the pro audio world for at least 30 years. One of the major advantages 
is signal to noise level.  Another is that you can limit the response to 
the frequency range in which you are interested. For example, small 
discontinuities that would be more problematic at UHF can be ignored by 
using a sweep that only goes to 100 MHz, and those discontinuities 
emphasized by using a sweep that begins at 100 MHz or or so and sweeps 
to a higher frequency.

73, Jim K9YC

73, Jim K9YC