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5.5 LED behavior
Left indicator: Power supply
status
Middle Indicator: GSM status
Right Indicator: GPS status
The left indicator consists of a red
one.
SBC AVL: When the LED is off, the
device is not powered.
SBC AVL Power: When the LED is
off, the device is not powered
even in sleep mode.
SBC-AVL:
Blinking once: Device is powered
(7- 32V)
Blinking twice: Powered only via
USB (GSM/ GPS off)
SBC- AVL Power:
Blinking once: Powered (7-32V)
and internal battery fully charged
Blinking twice: Low battery voltage
On: Internal battery charging
The orange LED reflects the GSM
status and also whether the device is
switching on
When the LED is off, the GSM
Module is not active.
Permanently on: GSM is active,
but no GSM networks available /
not yet registered.
Blinking once: Device is logged
into the GSM network, no
connection to server
Blinking twice: Device is logged
into GSM network, GPRS is
attached, established TCP/ IP
connection to server
A very short flash while the device
is in sleep mode means that a
movement has been detected.
This LED blinks green and indicates
the status of the GPS receiver
Off: GPS is not switched on
Blinking once: Position acqui-
sition
Blinking twice: 2D-Fix (no valid
height)
Blinking three times: 3D-Fix (GPS
data is complete)
After start up as well as after a
phase without GPS reception the
device only accepts 3D GPS
positions
This ensures, that 2D positions
reports with serious deviations
from the real position are not
reported to the control center.
After a while, 2D position reports
are accepted because the GPS
receiver then had enough time
to evaluate the signal quality of
all available GPS satellites.
A very short flash every 2
seconds indicates that the device
is in sleep mode
Table 5: LED Behaviour
