Sierra Wireless PinPoint X Guía de usuario descargar pdf (Pagina 13)

Introduction to the PinPoint X

Rev 4.0 Oct.09 7

UMTS

UMTS(UniversalMobileTelecommunicationsSystem)

supportsupto1920kbit/sdatatransferrates,althoughmost

userscanexpectperformanceupto384kbit/s.AUMTS

networkusesapairof5MHzchannels,oneinthe1900MHz

rangeforuplinkandoneinthe2100MHzrangefordownlink.

EDGE

EDGE(EnhancedDataratesforGSMEvolution)providesend‐

to‐endpacketdataserviceswithanenhancedconnectivity

buildingonGPRStechnologyandusingtheestablishedGSM

networks.EDGEprovideshighertransmissionratesandbetter

transmissionqualityfordatathanGPRS.EDGEcancarrydata

atspeedstypicallyupto 384

kbit/sinpacketmode.

WhenEDGEisnotavailable,yourPinPointXwillfall‐backto

GPRSfortheconnectiontoyourcellularprovidertoprovide

continuedconnectivity.

GPRS

GeneralPacketRadioService(GPRS)ispacket‐switchedwith

manyuserssharingthesametransmissionchannel,butonly

transmittingwhentheyhavedatatosend.Thismeansthatthe

totalavailablebandwidthcanbeimmediatelydedicatedto

thoseuserswhoareactuallysendingatanygivenmoment,

providinghigherutilizationwhere

usersonlysendorreceive

dataintermittently.GPRSprovidesspeedsof30–70kbpswith

burstsupto170 kbps.

Connection methods

YoucanconnectthePinPointXtoaUSBoraEthernet(RJ45)

onacomputer.WhenconnectedtoaUSBorEthernetport,the

PinPointXbehaveslikeanetworkcard.

USB

ThePinPointXisequippedwithaUSBportwhichincreases

themethodsbywhichyoucansendandreceivedata.TheUSB

portcanbesettoworkaseitheravirtualEthernetportora

virtualserialport.Adriverinstallationisrequiredtousethe

USBportin

eithermode.

ItisrecommendedthatyouuseaUSB2.0cablewithyour

PinPointXandconnectdirectlytoyourcomputerforbest

throughput.

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