Instruction Manual
628 GNSS RTK Expansion Pack 15
The quality of the wireless modem signal and the data
transmission speed is dependent on the signal strength
displayed.
0 bars: There is not a reliable signal. Don’t aempt to
send data. If no bars are displayed it may be necessary
to move to another location with beer signal strength
in order to send and receive data eectively.
1 bar: Signal strength is weak and the data
transmission speed will be slow.
2–4 bars: Signal strength is strong and transmission
speed will be faster.
Troubleshooting
SIM Card Missing or Not Working
If there are problems with the SIM card, the main Cell
Modem Setup screen indicates that it is missing: