Digi XBee3 - Page 4

Digi XBee3 Cellular LTE-M Global Smart Modem User Guide
4
Cellular RF characteristics 51
Bluetooth RF characteristics 51
Cellular networking specifications 51
Power requirements 52
Power consumption 53
Electrical specifications 54
Regulatory approvals 55
Hardware
Mechanical drawings 57
Pin signals 57
Pin connection recommendations 59
RSSI PWM 59
SIM card 59
The Associate LED 60
Antenna recommendations
Antenna placement 62
Design recommendations
Cellular component firmware updates 64
USB Direct design 64
Power supply considerations 64
Minimum connection diagram 65
Heat considerations and testing 65
Cellular connection process
Connecting 68
Cellular network 68
Data network connection 68
Data communication with remote servers (TCP/UDP) 68
Disconnecting 68
Modes
Select an operating mode 71
Transparent operating mode 72
API operating mode 72
Bypass operating mode 72
Enter Bypass operating mode 73
Leave Bypass operating mode 73
Restore cellular settings to default in Bypass operating mode 73
USB direct mode 73
Configure the data pins 73
Enable USB direct mode 73
Command mode 74
Enter Command mode 74
Troubleshooting 74