User Manual Galileosky Base Block
21
Operation with SIM-microchip
The tracking device has a slot for a SIM-card and a place for SIM-microchip sealing. Only
SIM-card or SIM-microchip can be active and support the registration in GSM/3G-network
at the same time. When the SIM-chip is installed, the second slot for SIM-cards (SIM1)
becomes inactive. APN can be set for SIM-card and SIM-microchip. The tracker supports the
following algorithm of SIM-card operation:
1.
Only SIM0 card is always active.
2.
Automatic switching to SIM-microchip or SIM1, if the data cannot be sent to the server
within 9 minutes. Switching occurs in cycles, i.e. first SIM0 is used, then SIM1 or SIM-
microchip and after that SIM0 again.
3.
Switching between the SIM-cards and SIM-microchip according to the list of preferred
GSM/3G-networks. If the tracking device detects the availability of one of the specified
GSM/3G-networks, it switches to the corresponding SIM-card or SIM-microchip. If both
networks specified for a SIM-card and SIM-microchip are available at the same time, the
preference will be given to SIM0.
4.
Always only SIM1 or SIM-microchip is activated.
The second algorithm is always used for remote firmware updating; the tracker attempts to get
the connection to the server with firmware via SIM 0, and if it fails – via SIM1 or SIM-microchip.
GPRS Traffic Costs Optimization
GPRS-traffic costs decrease by online monitoring may be reached by following these steps:
1.
Turn off the transmission of unused data, for example, temperature, acceleration, analog
and digital inputs values which have no connected sensors. It can be made in the
Configurator on Settings/Protocol tab or by MainPack and HeadPack commands (section
Server exchange protocol settings
).
2.
Increase points record period. It can be made in the Configurator on Settings/Track tab
or by WrPeriod command (section
Track parameters settings
).
3.
Increase turning angle at which the device records a point, and distance at exceed of
which the point is recorded. It can be made in the Configurator on Settings/Tracks tab or
by Turning command (section
Track parameters settings
).
4.
Find out the time of disconnection because of the tracking device inactiveness from the
server software developers. This parameter should be taken into account by points’ record
period setting otherwise the traffic will increase because of costs for restoring connection
to the server. Example: points’ record period at a stop is 1200 seconds (20 minutes), the
server disconnection because of the tracker inactiveness is 180 seconds (3 minutes). The
tracker determines that a vehicle has stopped and switches on a timer for the next point
record in 20 minutes, in 3 minutes the server disconnects as it hasn’t received the data from
the tracker. The device tries to reconnect the server at once. It happens 6 times, and only
in 20 minutes the tracking device sends the next point. As a result, traffic costs considerably
exceed savings from points record interval increase.
5.
Set filtering of coordinates at a stop so as the tracking device can correctly choose points’
record period. The tracker can determine a stop according to several elements:
accelerometer data (AccSens command, section
Track parameters setting
);
external supply voltage (MHours command, section
Track parameters setting
);
