Mirion Technologies DMC 3000, User Manual

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151153EN-G
DMC 3000 User's Guide
Alarms
5.6.4 Optical Test and pulse Test
For a complete check of the gamma and X-ray detection capabilities, two complementary tests are performed.
First, a periodic optical test is performed every 10 minutes in
Pause
,
Sleep
and
Run
modes by generating light
pulses on all detectors to simulate gamma photons, beta or neutron radiation.
If the number of pulses detected is less than expected on the detection circuit of the DMC 3000, a fault
is displayed, indicating that the detection function is no longer operational. If the module
detection circuit fail, is displayed.
In addition to the optical test, the background counting is verified. If the duration between two pulses is
too long compared to the statistical time calculation, then a fault (DMC 3000 fault) or
(module fault) is displayed.