4 calibration with three coefficients, 3 configure dose rate units and trigger, Calibration with three coefficients – BNC SAM 935 Portable Gamma Spectroscopy System User Manual
Page 21: Configure dose rate units and trigger
SAM 935™ Instruction Manual
3.2.4 Calibration with Three Coefficients
To enter the energy calibration factors manually, the factors from a previous live energy calibration for this
unit and matching detector must be available. These numbers can be found on the printout normally done
at the end of a live energy calibration. Alternatively, the numbers can be those recorded earlier from a pre-
vious manual calibration with the three coefficients.
Press the U
key to bring up the Utilities menu. Use the arrow keys to select
Setup. The first screen is the Energy Match Window:
Do NOT change anything in this screen. Press C
(F1) 10 times until you see the question
SET FINE ENGY COEFF?
The next three screens are standard number entry screens. Change the factors as needed. On
each screen, when the correct value is shown, press E
Return to the normal operating screen.
Configure Dose Rate Units and Trigger
Because the SAM 935 operates in Surveillance mode by default (also called dose rate monitoring), config-
ure the Dose Rate Units and Dose Rate Trigger options in the Monitor Setup menu:
Press the U
key to bring up the Utilities menu.