Technical Specs
Table Of Contents
- Important Notice
- Safety and Hazards
- Limitation of Liability
- Contents
- List of Tables
- List of Figures
- 1: Introduction
- 2: Electrical Specifications
- 3: RF Specifications
- 4: Power
- 5: Software Interface
- 6: Mechanical and Environmental Specifica- tions
- 7: Regulatory Compliance and Industry Certifi- cations
- A: Antenna Specification
- B: Design Checklist
- C: Testing
- AT Command Entry Timing Requirement
- Acceptance Testing
- Certification Testing
- Production Testing
- Functional Production Test
- Quality Assurance Testing
- Suggested Testing Equipment
- Testing Assistance Provided by Lantronix, Inc.
- IOT/Operator Testing
- Extended AT Commands for Testing
- D: Packaging
- E: References
- F: Acronyms
Rev 5 May.21
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3: RF Specifications
The EM7411 includes three RF connectors for use with host-supplied antennas:
•
Main RF connector—Tx/Rx path
•
GNSS RF connector—Dedicated GPS, GLONASS, BeiDou, Galileo, and QZSS
•
Auxiliary RF connector— Diversity, MIMO, GPS, GLONASS, BeiDou. Galileo, and
QZSS
The module does not have integrated antennas.
Auxiliary RF (Diversity/ MIMO/GNSS)
GNSS RF
Main RF (Rx/Tx)
I/O FPC Connector
Figure 3-1: Module Connectors (Preliminary shield design, subject to change)
RF Connections
When attaching antennas to the module:
•
Use RF plug connectors that are compatible with the following RF receptacle
connectors: Foxconn (KK12011-02-7H), Longwell (911-002-0006R), Speedtech
(C87P101-00001-H), Murata (MM4829-2702RA4 (HSC)), IPEX (20449-001E
(MHF4)).
•
Match coaxial connections between the module and the antenna to 50 Ω.
•
Minimize RF cable losses to the antenna; the recommended maximum cable loss for
antenna cabling is 0.5 dB.
•
To ensure best thermal performance, use the mounting hole (if possible) to attach
(ground) the device to a metal chassis.
Note: If the antenna connection is shorted or open, the modem will not sustain permanent damage.
Shielding
The module is fully shielded to protect against EMI and must not be removed.
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