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Pinout for:RS422 - RS499      All cables and connectors > Connectors > Computer > Serial I/O >  Description : RS422 - RS499 COLFAX INTERNATIONAL    At the DTE    At the DCE  Pinout : Pin Name Description 1 GND Shield Ground 2 SRI Signal Rate Indicator 3 n/c Spare 4 SD Send Data 5 ST Send Timing 6 RD Receive Data 7 RTS Request To Send 8 RR Receiver Ready 9 CTS Clear To Send 10 LL Local Loopback 11 DM Data Modem 12 TR Terminal Ready 13 RR Receiver Ready 14 RL Remote Loopback 15 IC Incoming Call 16 SF/SR Select Frequency/Select Rate 17 TT Terminal Timing 18 TM Test Mode 19 GND Ground 20 RC Receive Twister-Pair Common 21 GND Spare Twister-Pair Return 22 /SD Send Data TPR 23 GND Send Timing TPR 24 GND Receive Timing TPR 25 /RS Request To Send TPR 26 /RT Receive Timing TPR 27 /CS Clear To Send TPR 28 IS Terminal In Service 29 /DM Data Mode TPR 30 /TR Terminal Ready TPR 31 /RR Receiver TPR 32 SS Select Standby 33 SQ Signal Quality 34 NS New Signal 35 /TT Terminal Timing TPR 36 SB Standby Indicator 37 SC Send Twister Pair Common  Note : RS422 - RS499

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