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Note. A zero value of the threshold level makes the alarm inactive.
To save the measurement result of photon-ionizing radiation DER in the
nonvolatile memory, press and hold the THRESHOLD button in the measurement
mode until the "Arch" symbols are displayed on the LCD (Figure 5). Then release
the THRESHOLD button. Switching to the submode of measurement result saving
should be confirmed by a short press of the MODE button. Press shortly the
THRESHOLD button to cancel the action. If the buttons are not pressed for 30 s, the
radiometer automatically returns to the mode of photon-ionizing radiation DER
measurement.
If the "FULL" symbols are displayed on the LCD of the radiometer instead of
the "Arch" symbols (Figure 10), there is no free space in the nonvolatile memory of
the radiometer, and, correspondingly, the next measurement results cannot be saved.
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