ECOTEST MKS-05 TERRA-P+ Operating Manual page 42

The value of the preset threshold level is fixed after all digits are programmed by
short pressing of the MODE button. To fix a new value of the threshold level, set all
digits on the LCD by pressing the MODE button, even if the values of the high-order
digits are not changed. Double extinction of the LCD will indicate that the
programmed level is fixed.
Press and hold the THRESHOLD button to check the value of the fixed threshold
level of surface beta-particles flux density. The threshold level value will appear on
the digital LCD in two seconds. When the THRESHOLD button is pressed for more
than four seconds, the low-order digit starts blinking, indicating that a new threshold
level value can be programmed. A two-tone audio signal indicates that the
programmed threshold level during measurement has been exceeded.
Note. The threshold level value of surface beta-particles flux density of
3
0.0410 part./(cm
2
·min) is set automatically after the dosimeter is switched on.
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