NAVTELECOM SMART S-2420, Operation Manual

Page: 21 / 21

3. LED INDICATION
In order to display the operation modes and the current state of the system, three LEDs on the device case are used:
SYS, GSM and NAV.
The SYS system LED indicates the current status of the device. This LED indicates an alarm state if an alert is sent
to subscribers by SMS, or an input is in the activated state. Also, the system LED can display the system operation in test
mode (it is glowing for one second, is not glowing for one second).
Meaning of SYS LED indication
Tab. 3
Type of the signal light
Signal value
No indication “Turn off ” mode
1 flash in 4 seconds “Energy saving” mode
2 flashes in 4 seconds “Monitoring” mode
3 flashes in 4 seconds “Security” mode
Continuous frequent flashes “Alarm” mode
Meaning of GSM LED indication
Tab. 4
Type of the signal light Signal value
No indication Built-in GSM-module is turned off.
1 sec is glowing, 1 is not glowing
Built-in GSM-module is turned on. No registration in the operator's
network
1 short flash
1 second off
There is a registration in the cellular network of the operator. Weak
signal
2 short flashes
1 second off There is a registration in the cellular network of the operator. Medium
quality signal
3 short flashes
1 second off
There is a registration in the cellular network of the operator. High
quality signal
Permanent short flashes
Open GPRS session. Attempts to establish communication with the
telematics server
Constant glowing Connected either to the telematics server by GPRS or by voice channel
Meaning of NAV LED indication
Tab. 5
Type of the signal light Signal value
No indication Built-in GLONASS/GPS module is turned off
1 sec is glowing
1 is not glowing
Built-in GLONASS/GPS module is turned on
Navigation coordinates is not identified
1 short flash
1 second off
Built-in GLONASS/GPS module is turned on
Navigation coordinates is identified. Small number of satellites
2 short flashes
1 second off
Built-in GLONASS/GPS module is turned on
Navigation coordinates is identified. Average number of satellites
3 short flashes
1 second off
Built-in GLONASS/GPS module is turned on
Navigation coordinates is identified. A large number of satellites