The insertion loss of DUT1 on 1296 measured with SDR-IP mixers and HP generators.
(March 10 2013)






The second image is a continuation of the first one.
Observed signal levels:

 none         DUT1
114.8364    114.8039
114.8352    114.8055
114.8380
114.8387    114.8059
114.8384    114.8049
114.8355

      averages 
114.8370    114.8050
 Standard deviations on individual measurements
  0.0015     0.0009
 Standard deviations on averages
  0.0006     0.0005

IL = 114.8370 - 114.8050 = 0.0320 dB
Standard deviation 0.0008 dB
Error limits (3 sigma) +/- 0.0024 dB

Errors are estimated from too few data points so
the error estimation for this particular measurement is 
uncertain.
There are many measurements in this series so the statistics
of all the error estimates will give a good idea about errors.