GBS Elektronik MCA-527 - Manual (Page 42)

MCA527
42
Figure 25: Effect of Low Frequency Rejection
Left: 60keV peak of Am241, measured in a quiet environment. A resolution
of 0.49keV FWHM can be obtained. Settings: shaping time 6µs, flattop
0.8µs, BLR32.
Right: 60keV peak of Am241, measured in a very noisy environment. Settings
same as figure on the left. The resolution degrades from 0.49keV to
20keV, measurement is futile.
Bottom:60keV peak of Am241 measured in a very noisy environment, low
frequency reject on, all other settings same as figure on the left.