2.4.9 Audible alarm indication mode
In the audible alarm indication mode (Fig. 2.1) the instrument provides the following
functions:
- turn on/off the audible alarm;
- indication of turning ON/OFF of the audible alarm;
- sound pressure level control (Fig. 2.4) and indication in the analog (scale) and digital
formats (from 1 to 4);
The level 1 (one line) corresponds to the minimal sound level. The level 4 (four lines)
corresponds to the maximal sound level.
2.4.10 Vibration alarm indication mode
In the vibration alarm indication mode (Fig. 2.1) the instrument provides the following
functions:
- turn On/Off vibration alarm;
- indication of turning On/Off of the vibration alarm.
2.4.11 Partial or critical battery discharge indication mode
The instrument checks battery discharge once every 10 minutes.
If the battery has been partially discharged (approximately 1.1 V) the LCD will flash the
symbol “bat”.
In case of the battery critical discharge (approximately 0.9 V) the instrument will turn
into the DE indication mode, the symbol "bat" will become solid, the instrument will stop the
measurements, LCD backlight and audible alarm will become locked.
The battery is to be replaced! (see 3.3).
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