5.4 ALOHA transmission mode
ALOHA transmission mode is a special connection mode whereby the myDatalogNANO Ex
establishes a connection to the myDatanet server for a period of time configured via the "Basic
settings" configuration section (see "Aloha/wakeup duration" in chapter "Basic setting" on page
73).
There are two options for initiating the ALOHA transmission mode:
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Directly on the device using the solenoid switch (see "Solenoid switch" on page 57). The GSM
network is re-selected during this process. This means that a list of all of the GSM networks in
the receiving range of the device is created from which the strongest GSM network is then
selected that is not on the "Ban list" (see "Ban list" on page 36) and that is part of one of the
service providers supported by the integrated SIM chip (see www.microtronics.at/footprint).
The internal fault counter is pre-initialised in such a way that if it was not possible to log into
the selected GSM network, it is immediately added to the "Ban list". In this case, the next GSM
network from the previously created list is used immediately. If the connection with all of the
available GSM networks fails, the ban list is deleted and the connection attempt is aborted. If
ALOHA transmission mode is then initiated again, the ban list is empty and all of the GSM
networks in the receiving range, that are part of one of the service providers supported by the
integrated SIM chip, are taken into consideration when selecting the network. The network
selection also takes into consideration whether GPRS is available on the selected GSM
network.
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Via the myDatanet server if the "Interval & wakeup" connection type has been selected (see
"Basic setting" on page 73).
A speech bubble in the measurement instrument list (see "myDatanet Server Manual " 805002)
with the title "Aloha" indicates that a device is in ALOHA transmission mode.
Clicking on the speech bubble with the "Aloha" title opens the ALOHA data window (see
"myDatanet Server Manual " 805002), It contains the internal "GSM level" and "Battery"
measurement values, as well as the measurement values of the 2 universal inputs. The
measurement values for the last thirty minutes are always shown in the ALOHA data window, which
means that data from a previous ALOHA transmission may be included. The ALOHA data is
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