Diagnostic LED
FMS series device has an indication LED – for GPS and GSM modem status. LED starts flashing only if IN5 digital input is connected to battery +.
LED flash signal example
Short flash meaning (GNSS status).
Short flashes count | Meaning |
|---|---|
1 | No GPS signal |
2 | Poor precision. HDOP>1.5 |
3 | 3 satellites locked. HDOP<1.5 |
... | ... |
12 | 12 satellites locked. HDOP<1.5 |
Long flash meaning (GSM modem status).
Long flashed count | Meaning |
|---|---|
7 | Device started. No further action can be taken. |
6 | Modem turned on. No further action can be taken. |
5 | Modem SIM card ok, Modem turned on. No GSM registration. |
4 | Modem GSM registered, Modem SIM card ok, Modem turned on. No GPRS connection. |
3 | Modem GPRS registered, Modem GSM registered, Modem SIM card ok, Modem turned on. Can not connect to internet. |
2 | Modem connected to Internet, Modem GPRS registered, Modem GSM registered, Modem SIM card ok, Modem turned on. Unable to connect to the server. |
1 | Modem connected to server, Modem connected to Internet, Modem GPRS registered, Modem GSM registered, Modem SIM card ok, Modem turned on. |