Method and system for controlling gain and offset in radiation m

Details Method and system for controlling gain and offset in radiation m Method and system for controlling gain and offset in radiation m

1989-06-13

1991-04-02

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250369, 25036309, H01J 4014, G01T 120

Patent

active

050049046

ABSTRACT:
A measurement of standard light is performed during radiation measurement for gain correction and offset correction of radiation measurement apparatus. The standard light emitted by a LED falls on a PMT. An output signal of a preamplifier corresponding to the PMT is entered into a system controller after being subjected to predetermined analog signal processing. The system controller calculates a gain correction value and an offset correction value on the basis of initial correction values and an output value of the preamplifier, whereby gain control and offset control can be performed stably even in radiation measurement.

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