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If you keep holding the THRESHOLD button, then during the next two seconds
the radiometer will proceed to the submode of new values programming of alarm
threshold level and specified statistical error, and switching on/off audio signaling
of registered gamma-quanta and beta-particles (Figure 16). A stripe (1) "moving"
across the instantaneous value indicator and blinking of the low-order digit (2) of a
new threshold level serve as an indication of this submode.
Operation with the radiometer in this submode fully complies with the
operation in a similar submode of the photon-ionizing radiation DER measurement
mode.
To save the measurement result of surface beta-particles flux density in the
nonvolatile memory, press and hold the THRESHOLD button in the measurement
mode until the "Arch" symbols are displayed on the LCD (Figure 14). Then release
the THRESHOLD button.
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