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5.2
Sleep modes
5.2.1
Sleep mode
FMA120 is able to go to sleep mode after configurable Sleep timeout. This timeout
(defined period) starts counting when device is in STOP mode. After timeout is reached and all
conditions for sleep mode are met, device goes to sleep mode. While in sleep mode, FMA120
turns GPS module off and it is not making new periodic records. Only event records is being
recorded with last known coordinate and sent to AVL server. As a result power usage decreases
allowing saving vehicle battery.
FMA120 can enter sleep mode if
ALL
of these conditions are met:
•
FMA120 has to be configured to work in Sleep mode and Sleep timeout is reached;
•
Device must have synchronized time with GPS satellites;
•
No movement by movement sensor is detected;
•
Ignition (configured Ignition Source) is off;
•
USB cable detached;
FMA120 exits sleep mode when if
ONE
of following conditions are true:
•
Movement by movement sensor is detected;
•
Ignition (configured Ignition Source) is turned on;
•
USB cable is connected;
•
New SMS message received;
5.2.2
Deep Sleep mode
While in deep sleep mode, FMA120 sets GPS receiver to sleep mode and turns off
GSM/GPRS module (it is possible to wake up device via SMS). Despite records with last known
coordinate are being saved and send to AVL server (GSM/GPRS module is turned on to send data
and after that it is turned off again), power usage is
decreased to save vehicle’s battery. Note,
that power saving depends on two configurable parameters: send period and min. record saving
period.
FMA120 can enter deep sleep mode if
ALL
of these conditions are met:
•
FMA120 has to be configured to work in Deep Sleep mode and Sleep timeout set;
•
Device must have synchronized time with GPS satellites;
•
No movement by movement sensor is detected;
•
Ignition (configured Ignition Source) is off;
•
USB cable detached;
•
“
Min. Record Saving Period
”
(Data Acquisition Mode settings) must be bigger value
than
“
Sleep timeout
”
plus
“
Active Data Link Timeout
”
parameter.
•
“
Send period
”
(Data Acquisition Mode settings)
must be bigger value than “
Sleep
timeout
” plus “
Active Data Link Timeout
” parameter.
FMA120 exits deep sleep mode when if
ONE
of following conditions are true:
•
Movement by movement sensor is detected;
•
Ignition (configured Ignition Source) is turned on;
•
USB cable is connected;
•
New SMS message received;