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3M Dynapro ET 350 Monitor User’s Installation Guide
64
Serial port
RS-232C connector
Pin Signal Description In/Out
1 DCD N.C.*
2 RXD Receive Data OUT
3 TXD Transmit Data IN
4DTRData Terminal
Ready
IN
5 SGND Signal Ground ---
6DSRN.C.*
7RTSN.C.*
8CTSN.C.*
9RI N.C.*
Important: To reduce the risk of voiding FCC and CE compliance and reducing
the performance of the ET 350 monitor, when making your own cable, reduce
the sensitivity of the ET 350 monitor to electrical and radio frequency noise by
connecting the cable shield to the connector shield (360 degree shield) on both
ends of the cable.
*N.C. = No Connection