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RDL, Radio Design Labs - D-TPR3A

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D-TPR3A


Active Three-Pair Receiver - Twisted Pair Format-A - XLR and stereo phono outputs

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The -TPR3A modules are three-pair audio receiving modules compatible with RDL Format-A twisted pair products. These modules are designed to be mounted in wall boxes, cabinets or other enclosures that allow users to connect external equipment. The D- and DS- models mount in RDL WB-1U and WB-2U wall boxes, or in standard U.S. electrical boxes. The D-TPR3A features a white front-panel laminate with gray lettering that matches RDL Decora©-style remote controls. The DS-TPR3A is constructed of stainless steel to coordinate with RDL Decora©-style stainless steel remote controls in commercial/industrial installations. The AF-TPR3A is an APPFLEX series product that is compatible with various APPFLEX wall-mount, cabinet-mount and tabletop enclosures. The EM-TPR3A is a 45mm square module that fits the European Modular mounting frames and cover plates. European electrical boxes are not sufficiently deep to accommodate RJ45 jacks and plugs, therefore the EM- products connect to the twisted pair cable through a detachable terminal block.

APPLICATION: The -TPR3A modules feature an XLR audio output and two RCA phono jack outputs, one for the left channel and one for the right channel. The audio signal received from pair A of the RJ45 INPUT jack feeds the XLR audio output jack. The output level from the XLR jack is set to either MIC or LINE level during installation using a rear-panel switch. The audio signals received from pairs B and C of the twisted pair cable are buffered to drive the RCA output jacks at the standard -10 dBV consumer level.

Although the -TPR3A modules access signals from all three cable pairs, additional receivers may be connected to the same twisted pair feed. The bridging input circuits used in all FORMAT-A twisted pair receivers allow connection of up to 10 receiver outputs for each cable pair. The possibility of multiple receiver locations adds enormous flexibility in the design of audio routing systems using RDL FORMAT-A products.

The -TPR3A may be powered directly from a 24 Vdc power supply using the rear-panel detachable terminal block. Local power connected to the module is also fed to all connected remote modules. The -TPR3A may be remotely powered through the twisted pair cable from any other module, signal distributor or RDL power inserter connected to the same twisted pair cable. Module power is indicated by a front-panel LED.
 
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