EM919
1
Hardware Integration Guide
August
2
2
, 202
2
4
Contents
1. INTRODUCTION .................................................................................................. 5
1.1.
Accessories ......................................................................................................................... 5
1.2.
Required Connectors ........................................................................................................... 5
2. POWER ................................................................................................................ 6
2.1.
Power Supply....................................................................................................................... 6
2.2.
Module Power States .......................................................................................................... 6
2.2.1.
Power State Transitions ............................................................................................. 7
3. RF SPECIFICATIONS .......................................................................................... 9
3.1.
RF Connections ................................................................................................................. 10
3.1.1.
Shielding .................................................................................................................. 10
3.2.
Sub-6G Antennas and Cabling .......................................................................................... 10
3.3.
Ground Connection ........................................................................................................... 11
3.4.
Interference and Sensitivity ............................................................................................... 11
3.4.1.
Interference from Other Wireless Devices ............................................................... 11
3.4.2.
Host-generated RF Interference .............................................................................. 12
3.4.3.
Device-generated RF Interference .......................................................................... 12
3.4.4.
Methods to Mitigate Decreased Rx Performance .................................................... 12
3.4.5.
Radiated Spurious Emissions (RSE) ....................................................................... 12
3.5.
Radiated Sensitivity Measurement .................................................................................... 12
3.5.1.
Dejero Labs Inc
’ Sensitivity Testing and Desensitization Investigation
....................
13
3.5.2.
Sensitivity vs. Frequency ......................................................................................... 13
3.6.
Supported Frequencies ..................................................................................................... 13
3.7.
Antenna Specification ........................................................................................................ 16
3.7.1.
Recommended WWAN Antenna Specifications ...................................................... 16
3.7.2.
Recommended GNSS Antenna Specifications ....................................................... 18
4. REGULATORY COMPLIANCE AND INDUSTRY CERTIFICATION ................. 19
4.1.
RoHS Directive Compliant ................................................................................................. 19
4.2.
Important Notice ................................................................................................................ 19
4.3.
Safety and Hazards ........................................................................................................... 19
4.4.
Important Compliance Information for the United States and Canada .............................. 20
5. ABBREVIATIONS .............................................................................................. 23
