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9.2 Power Save Mode-ON. Operating from internal battery only, with
NO external power connected:
In above example a message
1234-R-TRK
is sent in the active Time (about 1.5 min.) of
the Tracker and a response message will normally be received in about 30 seconds.
(Depending on the mobile network provider)
The second SMS command
1234-T
can only be processed in the next active time after
the Power Save period, and the entire device is turned off for 10 minute periods (Or
whatever the “C” time is required by the user).
NOTE: If the “T” time in the Track mode is set to <10 min the tracker will be able to
receive instruction SMS messages directly for the time T x R. If time is >10 min the
tracker will go into Power Savings (PS) and a SMS sent in that period will only be
processed after the check time “C” is finished. See example above.
NOTE: Before switching to PS mode ON it is advised to run the tracker in PS - mode
OFF for about 15 minutes to allow the tracker to build-up the Ephemeris and Almanac of
the satellites and after all new parameters are changed to your preferred settings.
NOTE: For a general idea of how Power saving mode saves battery life, when a SMS is
sent with GPS coordinates every 15 min (e.g. Tracking mode activated with a “T” time of
15 min), the internal battery will last about one week. Depending on other parameter
settings the battery life could even last for months.
9.3 External power connected with Power Save Mode-ON:
(TRC0078 only)
The device will be able to receive SMS messages at all times, and they will be
processed immediately while within the GSM reception area. Other features, like the
internal GPS, goes into standby mode to save the battery power of the external power
source. It will be activated by the required mode you want to pre-program. Example –
Motion sensor ON and Power save ON: The tracker will be able to receive SMS
commands at all times, but will only switch on the GPS when motion is detected, or
when you request GPS position.
NOTE:
It is important to note that there is a difference in how the Power Save feature
works, depending on if it is connected to an external power source, or if it is only
operating from the internal battery. If connected to an external power source, the device
will be able to receive new SMS commands at all times. In other words, the “C” timing is
not valid at all, as the GSM feature remains permanently active in this case.
If operating ONLY from the internal battery, then the device will not be able to receive
new SMS commands while it is in standby during the “C” times programmed if Power
Save is ON.
