Qtech-data-systems Q71 External 1200bps Modem Manual de usuario descargar pdf (Pagina 3)

Q71B–QuickStartGuide–v1.1–April2013

www.qtech.co.nz Tel:033663713

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PowerSupplyConnections

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TheQ71Bisdesignedtooperatefromasupplyvoltageintherange8.0VDCto15.0VDC.

Asupplyvoltagegreaterthan15.0Vwillblowthe500mAfuseinsidetheQ71B.

Asupplyvoltagelessthan8.0Vwillresultindegradedorunreliableperformance.

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TheDATRANXL4RTUandtheeXcel(RevD)RTUhavetwoRS232ports;bothcanuse

theQ71Bforanalogueradiocommunications.

Thesignificantdifferencebetweenthetwoports,isthatthelowerRS232port(RS232-B)

ontheQ22Dhasa+VsupDCoutputsupplyline.TheQ71Bcanbepoweredviathisline,

solongasjumperJ23ontheQ22Disinthe1-2position.RS232-Aportontheprocessor

doesnothavethissupplyline,sotheQ71Bmustbepoweredthroughthethreeterminal

powersupplyconnector,thepowersupplyconnectionsareshownonthetopcover

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LeftPin

MiddlePin

RightPin

 PowerSupplyNegative

+ PowerSupplyPositive(8V–15VDC)

Notconnected

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ThedefaultinstallationpositionoftheQ71BisonthelowerRS232port.

AllnewRTUswillbeconfiguredwiththecorrectjumpersettingforthis.

However,pleasecheckthisjumperonexistingRTUsbeforeusingaQ71B.

IfusingthemodemontheRS232-Bportdonotapplypowerfromboththe

portandtheexternalsupply

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IftheDATRANRTUispoweredfroma24VDCsystem:

DonotconnecttheQ71Modemtothis24VDCsupply.

DonotconnecttheQ71modemtotheRS232Bport;usethe12VDCsupply

thattheradiouses&connecttotheQ71powerconnector.

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Qtech-data-systems Q71 External 1200bps Modem Manual de usuario Pagina 3