IDP-782 - Hardware Guide
When the LED is under the control of the LSF, the flashing patterns shown in Table 7 are used to indicate
the current state of the modem.
Table 7: Modem State LED Flashing Patterns
Modem
State
Flashing Pattern
Class-Subclass
1
Power on
As per above
-
Waiting for
GPS fix
3 flashes every 30
seconds
Class 3, Subclass 1, Field 19,
Flags = Need GPS Fix
Registration
in progress
2 flashes every 30
seconds
Occurs when Need GPS Fix flag is cleared (Class 3, Subclass 1, Field 19)
Connection
online
1 flash every 30
seconds
Occurs when registered flag is set and at least 1 minute of metrics are available
(Class 3, Subclass 17) and the percentage of successful receives is > 75%
Connection
offline
4 flashes every 30
seconds
Occurs when the percentage of successful receives (Class 3, Subclass 17) falls
below 25% and/or Satellite Control State (Class 3, Subclass 1, and Field 22) is
set to 3.
l
Cellular Status - Green
Flashing sequences controlled by the cellular modem to indicate cellular communications status as
follows:
l
Continuously off - no network coverage or not registered
l
GPRS cyclic output - on for 100 ms, off for 2 s (Registered with the home network)
l
GPRS cyclic Output - on for 100 ms, off for 100 ms, on for 100 ms, off
for 2 s (Registered with the visitor network - roaming)
l
HSPA cyclic output - on for 50 ms, off for 50 ms, on for 50 ms, off for 2 s (Registered with the
home network)
l
HSPA cyclic Output - on for 50 ms, off for 50 ms, on for 50 ms,
off for 100 ms (Registered with the visitor network - roaming)
l
Continuously on - voice or data call enabled
4.2.5.2 LED User Control
After power on and ignition, you have the ability to control the LED by configuring the LED Control property
to 1. The firmware supports a function call (ledControl) that defines this operation. You can specify on time
(msec), period (msec), and number of repetitions (0 - 65535 where 0 signifies repeat forever).
This function allows a user service to flash the LED over a short period of time. The user service is
responsible for repeating this short pattern over a longer period. As an example, using the connection
1
Refer to [
] for details.
T213, Version 02
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