BNC SAM 935 Portable Gamma Spectroscopy System User Manual
Page 19
SAM 935™ Instruction Manual
15
If you are using another standard that does not match one in this list, you will have to define it in
the Calibration Standards library. See Section 6.6 for instructions on how to define calibration stan-
dards.
5.
Now select a preset live time: If your Eu152 source is between 0.5 and 2
µ
Ci, select a time of 180
seconds. If higher or lower activity, make an appropriate adjustment in count time.
6.
Place the standard in front of the detector and press S
TART
(F2).
7.
When the SAM 935 beeps to indicate that data acquisition is complete, check the spectrum to ver-
ify you have counted the correct standard (i.e., about ten peaks covering nearly the entire energy
range), and if so, press A
CCEPT
(F4).
Example of a fine energy calibration in progress.
Note how the function keys change in this screen
versus the next one.
Example of a completed fine energy calibration.
Press Accept (F4) after reviewing.