In Reply to: Null Test Differences (NTD) are problematic posted by Tony Lauck on May 10, 2012 at 08:40:43:
Just to give you an example, for this optimized NTD a series of double acquisitions were made in the analog domain with signals at:
1) -90db
2) -95db
3) -100db
4) -110db
5) -115db
6) -120db
7) optional...in the digital domain (the bottom one).
Each one has received a small modification in the spectrum, precisely at 1000Hz and 10.000Hz.
Even at this low level NTD perfectly shows the modified segment at 1000Hz and 10.000Hz. From the picture we can evaluate difference at least up to -117db...in Analog.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- RE: Null Test Differences (NTD) are problematic - Bibo01 05/10/1215:15:42 05/10/12 (2)
- RE: Null Test Differences (NTD) are problematic - Tony Lauck 15:28:30 05/10/12 (1)
- RE: Null Test Differences (NTD) are problematic - Bibo01 15:39:58 05/10/12 (0)