LEDs
The MT 4100 includes LEDs to indicate Power, GPS, and Registration status. The following image shows
the location of each LED.
The LEDs are described in the following table.
MT 4100 LEDs
PWR:
This LED indicates power to the GPS module. LED is on ~1 second after powered on and
the GPS module is operational. This LED is off when powered off or when the MT 4100
enters Low-Power Sleep mode. Note: If you disable the GPS module, you must apply
power for this LED to turn on.
GPS:
You can configure this LED to display registration, GPS fix status, or other user functions.
By default, this LED indicates GPS fix status. The LED remains off when it receives invalid
GPS data. The LED remains on when it receives valid GPS data.
Registration:
You can configure this LED to display registration or other user functions. By default, this
LED indicates network registration status. If this LED stays off, this indicates that the device
is not attempting to register to the network. If the LED blinks, it indicates that the device is
trying to connect to the network. If the LED is always on, this indicates that the device has
connected to the network.
MT 4100 User Guide
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