John Larkin wrote:

On Wed, 19 Sep 2007 01:13:06 -0700, ChairmanOfTheBored
wrote:


On Tue, 18 Sep 2007 20:20:58 -0700, John Larkin
wrote:


How does one measure the THD of an amplifier, down around -70 dbC, in
the 1-30 MHz range maybe?

Why don't spectrum analyzers do log sweeps?


Use a loop analyzer.


What's that?


Telco test boxes. They can gauge the quality of stuff such as DSL lines
but I am not sure you'll get much for the 30MHz range from them.

--
Regards, Joerg

http://www.analogconsultants.com