BNC SAM 935 Portable Gamma Spectroscopy System - Manual (Page 18)

14 SAM 935™ Instruction Manual
3.2.3 Fine Energy Calibration
If the SAM 935 has not been previously fine energy calibrated with a multi-line standard such as Eu152,
you will see the message shown below. If no Eu152 source is available, enter the three coefficient num-
bers as described in Section 3.2.4.
1. Press F2.
2. Select Fine Energy Calibration from the Calibration menu, or just press F3.
3. If you have not taken a background spectrum recently, or have not taken one since the last coarse
adjust, you will be forced to do so now. If it’s needed, you will also be forced to do a coarse adjust-
ment before the background reading.
4. You will be presented with a list of isotopes. Select the Eu152 standard from the list and press
E
NTER :
Always perform a fine energy calibration if the external detector is changed.