Tait TM8000 Service Manual
Also see for TM9000: Installation instructions
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TA2922 Universal Line Interface Service Manual 7© Tait Electronics Limited March 20101 IntroductionThe TA2922 TM8/TM9 universal line interface board is fittedinto the TM8000 and TM9000 radios, and is functionallyequivalent to the AM8000-UIS manufactured by TaitAustralia. It features hardware and software-configurableoptions for:■ 8-wire line interface■ 2-wire line interface with phantom DC keying options,■ 4-wire line interface with phantom DC keying options, and■ 6-wire E&M interface.The field programmable microcontroller allows linking/repeating options to be configured by software, including tailand anti-kerchunker timers and a flexible supply voltagemonitoring alarm.A configuratble matrix allows the integrator to allocate any of26 different I/O signals to any of the nine pins on the external9-way D-range socket.The interface board fits inside the radio in the options cavityand is connected to the main PCB by the internal optionsloom. The 9-way D-range connector mounted on theinterface board fits through the external options connectorhole provided in the radio chassis.1.1 OperationThe TA2922 universal line interface board provides an interface between balanced600 ohm lines and the TM8000 and TM9000 series radios.Unbalanced audio allows direct interfacing to equipment using unbalanced audio(audio referenced to ground) where the input and output levels need to beadjustable.Using an appropriate cable, two TA2922 interfaces can be installed into twoTM8000 and/or TM9000 radios for linking purposes. This includes linking ofrepeaters (same RF band or mixed RF band) and mobile linking applications, forexample an in-vehicle repeater that communicates between a wide area VHF radionetwork and a UHF portable radio.Important The radio does not meet the IP54protection standard once aninterface board has been installedunless the external options coverseal is installed.external optionsconnectorinternal optionsconnectorD-rangehood partsD-range pluguniversal lineinterface boarduniversal line interfaceinstallation partsinternal optionsloom |
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