LSI LASTEM Alpha-Log, Руководство пользователя, Страница: 42 / 116

Alpha-Log – User manual
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Machu Picchu Perù (lat: 13° 9' 29" S, long: 72° 31' 53" W): - 13.158056, -72.531389
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Statue of Liberty New York (lat: 40° 41’ 21.15” N, long: 74° 02’ 39.93” W):40.689208, -74.044425
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Altitude : the installation site altitude.
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Time Zone : the time zone, compared to NTP time, used by the instrument to synchronize its internal
clock.
4.1.2 Operating mode based on energy availability
Watch the following video tutorials related to the topics of this chapter.
# Title YouTube link QR code
20
Alpha-Log: Setup power operative
modes Alpha-Log #20 - Setup power operative modes -
YouTube
The operative modes define Alpha-
Log’s behavior based on the available power.
System Parameters->System .
Fig. 6 – System parameters
Alpha- Log’s operative modes are based on three parameters: Operative mode , Power threshold low and
Power threshold high . In 3DOM, these can be found in General Settings .
It’s possible to set the regular mode ( Operative mode ) or the low power mode. The first one is to prefer when
there are no power issues (the power grid is available), while the second one is preferable when the data
logger is powered by a battery and photovoltaic panel combo.
In the regular mode, the instrument set up its internal components to be always on, so that they are always
ready to communicate with the external devices, at the expense of a higher power consumption.
In the low power mode, instead, the instrument works with the minimum power usage. The internal
components are switched on only when necessary (e.g. for sending data to the FTP site), at the expense of
the communication with the external devices.
When Alpha- Log’s power voltage is higher than the set high threshold, the data logger works in the selected
operative mode (data logger status = Run normal).
If the power voltage is lower than the high threshold but higher than the low threshold, the data transmission
activities will be stopped. The measurements acquirement and the elaborations creation will continue
regularly. If used, the modem will be turned off and the instrument will switch to the low power operative
mode (data logger status = Run limited).
If the power drops under the low threshold, the measurements acquirement and the elaborations creation
will be stopped too. Instead of
showing the measurements values, “Power low” will be shown on the display
(data logger status = Low battery).
The data logger will restore the partial functioning of the instrument when the low threshold is exceeded;
when the high threshold is exceeded, it will restore the complete functioning instead.