Tait TOP Operation And Service Manual

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Tait TOP Operation And Service Manual Manual pdf 34 page image

34 Tait Orca Portable (TOP) Encryption Midian Encryption Programming and Service ManualJune 2006 © Tait Electronics Limited3.7 .TOP Fault FindingDiagnosis TIPIf unsure whether a radio with simple inversion encryption is in encrypt or clear mode: while in standby(without any incoming signal), hit a keypad or function key to produce an audible beep. If the radio is inencrypt mode, the beep will be a much higher frequency than normal.Symptom Cause ActionRadio transmits regularly -goesinto emergency modeAudio not operatingRadio stopped working after itwas dropped.Module not squarely in connectorRe-plug connector tomodule (radio will need tobe opened)Receives okay, but no transmitaudio. Module may not be receiving PTT Check PTT links.External mic PTT does notoperate. Incorrect links on flex Check PTT links.Encryption on/off button onlychanges encryption state everysecond pressModule may be programmed for level-sensitiveinstead of edge-sensitive.Reprogram encryptionmodule.Module does not decrypt audio. Module may have been programmed differentlyto the rest of the fleet. Reprogram correct settings.Radio will not power upproperly, shows database error,continuous Red LED.Radio has been downloaded with incorrectfirmware and/or programmed withincompatible software.Contact Customer support.Radio will not power upproperly, display blank.Flex-edge connectors may not be correctlyplugged.Module faulty.Replug connectors checkingthat the flex is square toconnector.Replace module.Radio set to one code can hearanother radio no matter whatcode it is set to.Module may have same code strings set in allcode registers.IC1 on flex may not be working, or not gettingaddress information from micro.Reprogram module withdifferent codes.Replug loom connectors,check circuit.Audio sounds very muffled Inversion module may have very low inversionfrequency.Program module to a higherfrequency.Audio sounds very “thin”. Inversion module may have very high inversionfrequency.Program module to a lowerfrequency.Audio sounds unusually highpitched or low pitched.Transmit and receive inversion frequencies maybe different.Ensure both radios are usingsame frequency. If problemstill exists, reprogrammoduleReceiving radio intermittentlyfails to decode sync pulse.Audio unintelligible for severalseconds then comes right.System delay may be set too shortReprogram module, orconsider if CTCSS can beremoved from some partsof radio system.Radio confidence and alert tonesare different, rapidly varyingtones.Normal when the transmitting or receiving radiocreates an alert tone or confidence tone duringan encrypted conversation.No action - not a faultRadio makes unusual, distortedbeeps at turn on.Radio confidence tones may be set to high. (Notall radios exhibit this)Reprogram radio to setconfidence tones to low.Encryption indicator triangleturns on and off randomly.Both LK-3 links on TOP flex may be connected,not just one.Remove one LK-3 link. (SeeFitting Instructions)