venus-os:gx-gsm
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GX GSM
Trouble shooting
Step | Details | |
---|---|---|
1 | Power | Check that the blue LED is either lit continuous or blinking |
2 | USB | The modem must be connected to USB, and visible in the Settings → GSM modem menu |
3 | Simcard | (feature is still being added to the software) |
4 | Signal strength | 15 or higher (and see below table) |
5 | Network |
Antenna reception interpretation
Even when there is no simcard inserted, you can check signal strength.
0 = -113 dBm or less 1 = -111 dBm 2 = -109 .. -53 dBm 31 = - 51dBm 99 = not known or not detectable -50 to -75 dBm: high signal -76 to 90 dBm: medium signal -91 to -100: low signal -101 to -120 dBm poor signal
You also need to remember that an outdoor antenna typically increases received signal by 15 dB to 25 dB. (verify)
TODO: replace above by something meaning full, ie indicate the signal strenght to the user in such way that he doesn't need to memorize rssi or other tables.
venus-os/gx-gsm.1530819812.txt.gz · Last modified: 2018-07-05 21:43 by mvader