Difference between revisions of "Mobile signal strength check"
Martin Cupak (talk | contribs) (mob signal check page create) |
Martin Cupak (talk | contribs) (→3G modem modules (MC8705)) |
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at!gstatus? | at!gstatus? | ||
!GSTATUS: | !GSTATUS: | ||
| − | Current Time: 7833862 Temperature: | + | Current Time: 7833862 Temperature: 61 |
Bootup Time: 6442483 Mode: ONLINE | Bootup Time: 6442483 Mode: ONLINE | ||
System mode: WCDMA PS state: Attached | System mode: WCDMA PS state: Attached | ||
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Signal strength (CSQ) >=5 is acceptable, although in country areas the internet may work even with lower signal quality as the masts are not too busy. In any case, the more the better. More than ~ 10 is very realiable connection. | Signal strength (CSQ) >=5 is acceptable, although in country areas the internet may work even with lower signal quality as the masts are not too busy. In any case, the more the better. More than ~ 10 is very realiable connection. | ||
| − | To exit minicom, pres Ctrl+ | + | To exit minicom, pres Ctrl+a q. |
Revision as of 01:48, 26 November 2020
This link shows a good description of what signal quality is needed: [1]
4G (MC74xx) modem modules
Login to the camera system locally or remotely, in text console run the following commands.
Verbose receive signal print:
root@XXXXXX:~# qmicli -d /dev/cdc-wdm1 --nas-get-signal-strength
[/dev/cdc-wdm1] Successfully got signal strength
Current:
Network 'lte': '-68 dBm'
RSSI:
Network 'lte': '-68 dBm'
ECIO:
Network 'lte': '-2.5 dBm'
IO: '-106 dBm'
SINR: (8) '9.0 dB'
RSRQ:
Network 'lte': '-12 dB'
SNR:
Network 'lte': '1.0 dB'
RSRP:
Network 'lte': '-104 dBm'
Brief receive signal print:
root@XXXXXX:~# qmicli -d /dev/cdc-wdm1 --nas-get-signal-info
[/dev/cdc-wdm1] Successfully got signal info
LTE:
RSSI: '-68 dBm'
RSRQ: '-12 dB'
RSRP: '-104 dBm'
SNR: '-4.4 dB'
Note: if device /dev/cdc-wdm1 was not working, try substitute 1 with 0 or 2. List devices available in your system with 'ls -l /dev/cdc-wdm*'.
ls -l /dev/cdc-wdm* crw------- 1 root root 180, 0 Nov 26 11:53 /dev/cdc-wdm0 crw------- 1 root root 180, 1 Nov 26 11:53 /dev/cdc-wdm1
3G modem modules (MC8705)
Login to the camera system, in text console run command 'minicom'. It should be preset to use the correct virtual serial port /dev/ttyS3. If not, run 'minicom -s' and select this port.
Rype following AT modem commands:
at+csq at+csq +CSQ: 14,99 OK at!gstatus? !GSTATUS: Current Time: 7833862 Temperature: 61 Bootup Time: 6442483 Mode: ONLINE System mode: WCDMA PS state: Attached WCDMA band: WCDMA800 GSM band: Unknown WCDMA channel: 4436 GSM channel: 65535 GMM (PS) state:REGISTERED NORMAL SERVICE MM (CS) state: IDLE NORMAL SERVICE WCDMA L1 State:L1M_DCH RRC State: CELL_DCH RX level (dBm):-85 OK
Signal strength (CSQ) >=5 is acceptable, although in country areas the internet may work even with lower signal quality as the masts are not too busy. In any case, the more the better. More than ~ 10 is very realiable connection.
To exit minicom, pres Ctrl+a q.
