{"product_id":"qsc-qsys-ptl-1","title":"QSC {QSYS} PTL-1","description":"\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cp\u003eWithin Q-SYS, a 22 kHz pilot tone (outside the audible range of human hearing and undetectable above the program material) is transmitted along each loudspeaker line. Q-SYS, knowing the impedance value of the PTL-1, is then able to easily detect any deviation in the impedance at 22 kHz.\u003c\/p\u003e\u003cp\u003eAny significant drop below a predetermined impedance will signify that a short circuit has occurred, while any rise above signifies that an open circuit has occurred. Each failure scenario will then generate a time stamped event into the Q-SYS Event Log, which may then trigger alert messages if desired.\u003cbr\u003eAdditionally, the user can select whether the pilot tone is only generated during a scheduled maintenance check, or whether the tone is always active to provide real-time diagnostics on every zone.\u003c\/p\u003e\u003cul\u003e \u003cli\u003ePilot tone detection on 70V or100V loudspeaker circuits using QSC DataPort and CXD platform amplifiers\u003c\/li\u003e \u003cli\u003eCeramic screw-down connector block\u003c\/li\u003e \u003cli\u003eFuse protects circuit against shorts\u003c\/li\u003e \u003cli\u003eVersatile install adapter plate included\u003c\/li\u003e \u003cli\u003eFits most plenum-rated electrical boxes\u003c\/li\u003e \u003c\/ul\u003e\u003ctable class=\"table\"\u003e \u003cthead\u003e \u003ctr\u003e \u003ctd\u003e\u003ch3\u003eSPECIFICATIONS\u003c\/h3\u003e\u003c\/td\u003e \u003ctd\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003eInputs\u003c\/td\u003e \u003ctd\u003e1\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eVoltage\u003c\/td\u003e \u003ctd\u003e70\/100V loudspeaker line\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCenter Frequency\u003c\/td\u003e \u003ctd\u003e22 kHz\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eConnector\u003c\/td\u003e \u003ctd\u003eCeramic screw-down\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eDimensions\u003c\/td\u003e \u003ctd\u003e3.3” × 3.3” × 1” (84 × 84 × 25 mm)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eWeight\u003c\/td\u003e \u003ctd\u003eApprox. .06 lb (.03 kg)\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e","brand":"Empire Pro","offers":[{"title":"Default Title","offer_id":44262258376747,"sku":"QSC-PTL-1","price":53.33,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.empirepro.com\/products\/qsc-qsys-ptl-1","provider":"Empire Pro","version":"1.0","type":"link"}