User's Manual
Table Of Contents
- toc
- VML750 — LTE Vehicular Subscriber Modem (VSM) Installation Guide
- Notational Conventions
- Required Documents for complete VSM Deployment
- Motorola Solutions Support Center
- Safety
- FCC Interference
- Legal Notice
- VML750 Description
- VML750 Installation
- Unpacking and Inspecting the Shipment
- Safety and General Information
- Planning the Installation
- Antennas
- Cables
- Mounting Brackets
- Modem Installation Process
- Antenna Mounting
- Modem Installation Procedure
- Cables Routing and Connection Procedure
- SIM Installation
- CryptR Card Removal and Installation
- Cap Installation
- Powering the Modem Up
- Troubleshooting the VML750
- Using the VML750
- Specifications
- Reference
- LTE & LMR Antennas Mounting Recommendations
- VML750 — LTE Vehicular Subscriber Modem (VSM) Installation Guide
AntennasforB20LTEonlyConfigurationChapter2:VML750Installation
AntennasforB20LTEonlyConfiguration
MainAntenna
TheMainantennaisusedtoenhancethereceptioncapabilityinpoorreceptionareasandalso
tosupportMultipleInputMultipleOutput(MIMO)modesforLTE.
Theantennacanbeprovidedwith12ftor17ftcoaxialcable.
TheMainantennaisshowninFigure2-5.
Figure2-5MainAntenna
DiversityAntenna
Thediversityantennaisconstructedofthreeantennas.
•ExternalWhip—doesnotapplyforB20LTEonlyconfiguration
•InternalantennaforWWAN2diversityandWiFi(tobeconnectedtoWW AN2diversity)
•GPSactiveantenna(tobeconnectedtoGPSport)
Theantennaisprovidedwiththreeshortflexiblecoaxialcables(threads)comingoutoftheantenna
bottomside.Dependingontheantennaoptionpurchased,two12ftor17ftcoaxialcablesarealso
providedinordertoconnectbetweenthesethreadsandthemodemconnectors.Thecableswill
beconnectedtotheGPSandtotheWW AN2div.(seeFigure2-6).
BesuretousetheRG-174cabletoGPSport.
2-86802988C54-BJuly2014