Tait TM8100 Protocol Manual
Also see for TM8200 mobiles: Service manualInstallation guideInstallation guideAccessories manualOperator's manual
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Contents
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TM8100/TM8200 Computer-Controlled Data Interface (CCDI) Protocol Manual CCDI 17© Tait Electronics Limited April 20071.7.2 Exiting Transparent ModeTo change to Command mode while operating in Transparent mode, youcan:■ send the escape sequence consisting of a 2 second idle time, followed bythree escape characters (sent within 2 seconds), followed by a further 2second idle time.Example: If the escape character is “+” (default), send[2 second idle] +++ [2 second idle].■ exit via the I/O line programmed for THSD, if Transparent Mode wasentered using this line.1.7.3 Transparent Mode FormatTransparent ModePacketisationTransparent mode data is packetised into data blocks before it is sent over-air. The start and stop bits are removed and a header is sent at the start ofeach data block.FFSK TransmissionFormat The Transparent Mode transmission format is as follows:Singe Data Block:Multiple Data Blocks:Lead-InDelay Lead-OutDelaytime...data block 1 data block nover-airPC dataRS232dataRS232PCair-interface data outserial data outair-interface data inserial data inprocessing...radioFlowControlFlowControlno Flow Controlair-interface data outserial data outair-interface data inserial data inprocessing...radioLead-InDelaypreamble2 bytessync2 bytessize2 bytesFFSK data blockmax 46 bytesCRC2 bytesLead-OutDelayHEADERLead-InDelayHEADER6 bytesFFSK data block . . . .max 46 bytesCRC2 bytesHEADER6 bytesFFSK data blockmax 46 bytesCRC2 bytesLead-OutDelay |
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