B&B Electronics QSPXP-100 - Manual - Manual (Page 17)

B&B Electronics ExpressCard Serial Adapter User’s Manual l Making ex
Rev 1.00 (July 2007) Page 13
The Serial Adapters are DTE devices that connect to peripheral
equipment through a male DB-9 connector. The following table lists
the serial port connector definitions.
Figure 16 - RS-232 DB-9 pin designations
Table 2 - RS-232 DB-9 signal definitions
RS-232 signal description DB-9 pin
Data Carrier Detect (DCD) 1
Receive Data (RxD) 2
Transmit Data (TxD) 3
Data Terminal Ready (DTR) 4
Signal Ground 5
Data Set Ready (DSR) 6
Request To Send (RTS) 7
Clear To Send (CTS) 8
Ring Indicate (RI) 9