For the noise measurement what did you terminate the input with, a short or
a metal film resistor?

Rgds:

Eric


"Tim Perry" wrote in message
...
thanks for you comments gentelman.

my gear works fine for my normal aplications (level setting and
troubleshooting, often in high RF envirnments).

i was able to get a much better reading using a DAW and soundcard as a
source (.01% THD on the Behringer), however this is through the line
input.
i think iwill have to build a input pad if i want to continue.

i was mostly curious as to noise mesurments.
is the procedure i described sufficienty accurate to compare the results
with published specs?
with 15 uv of self noise is this equipment sufficient to measure noise in
modern gear? http://www.pi-usa.com/aa51a/aa51ag.htm#SPECIFICATIONS