User's Manual

Trailblazer Installation and User Manual version 1.02 43
Standard “AT” Pinout for a DB9 Connector
Figure 14: Serial Data Cable Schematic
Table 16: Serial Data Cable Pinout
Serial Data Cable Pinout
Pin Signal Description Direction
1 DCD Data Carrier Detect To PC
2 RD Receive Data To PC
3 TD Transmit Data From PC
4 DTR Data Terminal Ready From PC
5 GND Signal Ground Common
6 DSR Data Set Ready To PC
7 RTS Request to Send From PC
8 CTS Clear to Send To PC
9 RI Ring Indicator To PC