User's Manual
Module LEDs
The module has 9 green LEDs along the back of the board. These LEDs provide valuable inform
ation about
the status of the module as described in Table 3.
Table 3. Module LEDs
LED Description
DS1 - Buss Proper circuitry operation.
DS2 - XMIT Transmitting message packet to the tower
DS3 - SVC Cellular service available
DS4 - BEST
DS5 - GOOD
DS6 - FAIR
DS7 - POOR
The LEDs will either be off, on, flashing slow, or flashing fast depending on the dB of
the signal. Refer to Table 4 on page 7 for details.
DS9 - RXD Receiving data from GSM radio.
DS8 - TXD Sending data to GSM radio.