ECOTEST DKG-21 Operating Manual page 42

4.3.3.4 Programming of audio and light DER alarm threshold level
Audio and light alarm threshold levels of DER are programmed in the
mode of DER measurement.
Press the THRESHOLD button and hold it down for about 5 s until the
low-order digit starts blinking on the dLCD to start programming. During
the programming of the threshold level, the "ALARM" transparency will
be displayed on the dLCD.
Set an appropriate value of the low-order digit by shortly pressing and
releasing the THRESHOLD button. Press shortly the MODE button to
proceed to programming of another digit, the latter will start blinking. The
required value of the digit is set with short pressing and releasing the
THRESHOLD button.
After the last digit is programmed and at next pressing of the MODE
button, the dLCD will blink four times, indicating that the new value of
threshold level has been fixed. The dosimeter will return to the mode of
DER measurement.
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