Digi XBee 3 Cellular LTE-M, User Manual, Page: 6 / 331

Digi XBee® 3 Cellular LTE-M/NB-IoT Global Smart Modem User Guide 6
Example: use Python to generate a CoAP message 69
Get started with MQTT 71
Example: MQTT connect 71
Send a connect packet 73
Example: send messages (publish) with MQTT 74
Example: receive messages (subscribe) with MQTT 75
Use MQTT over the XBee Cellular Modem with a PC 76
Update the firmware
Create a plan for device and cellular component firmware updates 81
Update the device and the cellular firmware using XCTU 82
Update the device and cellular firmware using XCTU and USB Direct access 82
Update the device firmware 84
Update the firmware from the Devices page in Remote Manager 84
Update the firmware using web services in Remote Manager 85
Use a host processor to update the modem firmware for XBee 3 devices over UART prior to
*10
87
Use a host processor to update the device firmware for XBee 3 devices over UART after *10 89
Update the cellular firmware 91
Update an XBee module cellular component using FOTA (over the air) 91
Update an XBee module cellular component using API mode (over the wire) 93
Update the cellular module from a PC using the EasyFlash Firmware Update 96
Technical specifications
Interface and hardware specifications 98
Cellular RF characteristics 98
Bluetooth RF characteristics 98
Cellular networking specifications 98
Power requirements 99
Power consumption 100
Electrical specifications 101
Regulatory approvals 102
Hardware
Mechanical drawings 104
Pin signals 104
Pin connection recommendations 106
XBee header connector requirements 106
RSSI PWM 106
SIM card 107
Associate LED functionality 107
Development boards 109
XBIB-CU-TH reference 109
XBIB-C-GPS reference 113
Interface with the XBIB-C-GPS module 114
Antenna recommendations
Antenna placement 116