FlexRadio Systems Tuner Genius XL

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14.2 Connection Information and Pin Out Diagrams
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14.2.1 Power Connector
2.1mmx5.5mmpolarizedconnector.DCvoltagefrom12–25vdc.
14.2.2 Ground Connection
Thisthumbscrewisforattachinganearthgroundtothechassisofthetuner.Groundingisthemostcritical
safetyenhancementyoucanmaketoyourshack.AlwaysgroundthetunertoyourstationRFgroundusing
high‐qualitywiring,makingthelengthasshortaspossible.Braidedwireisconsidered
thebestforground
applications.Yourstationgroundshouldbeacommonpointwhereallgroundscometogether.Youwillli kelybe
usingaPCandaDCpowersource,sobesuretogroundthesedevicestogetheraswell.
14.2.3 Push to Talk (PTT)
14.2.3.1 PTT IN
ThisRCAconnectorisprovidedforanexternalPush‐To‐Talksignal.GroundthecenterpintoengagePTT.(Note:
3.3VDCMax.Input.)
14.2.3.2 PTT OUT
ThisRCAconnectorisprovidedtosupplyaPush‐To‐Talksignaltootherdevices.Thecenterpinisgrounded
whenPTTisasserted.NotethattheTunerGeniusXLprovidesthissignalaftermakinganyadjustmentstothe
tuningsolutionwhenitreceivesPTT.Thissignalcanthereforebeused
tosynchronizeRFgenerationsothatthe
RFsignalisnevergeneratedbeforethetunerisreadytoreceiveit.
14.2.4 RS-232 Serial Connector Pinout
RS‐232standsforRecommendedStandardnumber232.RS‐232,asaninterface,hasbeenastandardformany
yearsandistypicallyemployedtoconnectaperipheraltoacomputer.Thestandardspecifiesamaximumopen‐
circuitvoltageof25volts:signallevelsof±5V,±10V,±12V,
and±15Vareallcommonlyseendependingon
thevoltagesavailabletothelinedrivercircuit.FortheTGXL,theRS‐232voltageis+12and‐12vdcandusespins
2,3,and5.Pleaseconsultthediagrambelowfordetails.
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