6.5 LED Status
The LED indicator has the following status for different SAMMODE:
SAMMODE=0
LED behaviour can be set by AT#SLED=<mode> [,<on_duration>[,<off_duration>]]
Default is <mode> = 2 with the following timings:
• Not registered: always on
• registered in idle: blinking 1s on and 2s off
• registered in idle with power saving: blinking time depends on network condition in order to
minimize power consumption
SAMMODE=1
Modem power on until SIM ready: Red LED On
Modem initialize on NB1: Red LED 1s On/Off
Modem initialize on M1: Red LED 500ms On/Off
Remote socket connection on NB1: Orange LED 500ms On/Off
Remote socket connection on M1: Green LED 500ms On/Off
Modem failed to connect to IP: Red LED 100ms On/Off
Modem connected to IP: Green LED flashing on M1, Orange LED flashing on NB1, LED timing
patterns are explained below.
On M1 RSRP Signal Strength
> -90 dBm
-90 dBm to -105 dBm
-106 dBm to -120 dBm
< -120 dBm
On NB1 RSRP Signal Strength
> -90 dBm
-90 dBm to -105 dBm
4 pulses of Green LED (100ms On 300ms Off) then 3s Off
3 pulses of Green LED (100ms On 300ms Off) then 3s Off
2 pulses of Green LED (100ms On 300ms Off) then 3s Off
1 pulse of Green LED (100ms On 300ms Off) then 3s Off
4 pulses of Orange LED (100ms On 300ms Off) then 3s Off
3 pulses of Orange LED (100ms On 300ms Off) then 3s Off
SAMXT User Guide V1.5
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