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Etm9420_9440_Quick_Start_Guide
201705RV01
Indicator Lights
ETM9420-1
The operation of the units LED is determined by the setting of the AT^SSYNC command as default
the unit is set to AT^SSYNC=1. Refer to the AT command list for more details.
Yellow LED (GSM)
Function
600ms On / 600ms
Off
- Network search
- No SIM inserted
- No PIN entered
- NO GSM or GPRS network available
75 ms on / 3 s off
IDLE mode: The mobile is registered to the GSM network (monitoring control
channels and user interactions). No call is in progress.
75 ms on / 75 ms
off / 75 ms on / 3 s
off
One or more GPRS PDP contexts activated.
500 ms on / 50 ms
off
Packet switched data transfer is in progress.
Permanently on
Depending on type of call:
Voice call: Connected to remote party.
Data call: Connected to remote party or exchange of parameters while setting up
or disconnecting a call.
Permanently off
ME is in one of the following modes:
- POWER DOWN mode
- AIRPLANE mode
- CHARGE ONLY mode
- NON-CYCLIC SLEEP mode
- CYCLIC SLEEP mode with no temporary
wake-up event in progress
ETM9440-1
The operation of the units LED is determined by the setting of the AT^SLED command, typically
the unit is set to AT^SLED=2,10 and operation of the LED will be as follows.
Yellow LED (GSM)
Function
10 ms on / 990 ms
off
ME is registered to a network.
GSM CS data or voice call or UMTS voice call is in progress.
10 ms on / 1990 ms
off
ME is registered to a network.
GSM PS data (GPRS) transfer or UMTS CS data call is in progress.
10 ms on / 3990 ms
off
ME is registered to a network. No call is in progress.
ME is either awake or in power saving state.
500ms on / 500 ms
off
ME is in Limited Network Service, e.g.
no SIM/USIM, no PIN or during network search.
Should alternative LED status indication be desired then the appropriate AT commands need to be
set. Refer to the AT command list for more details.