Texas Instruments 51X - Manual (Page 30)

2.5.3 Installing External Serial Port Device
The notebook contains an RS-232 serial port with a male DB-9 connector as
shown in Figure 2-7. The serial ports are used to interconnect such devices
as:
•
External Modem
•
Serial Printer
•
Any device that uses an RS-232 interface
To connect a printer to the notebook, ensure that both the notebook and the
printer are turned off.
c
Caution: Never connect a parallel device to a serial port or a serial de-
vice to a parallel port or video port; this may cause damage to the
Notebook and/or peripheral device. If you are uncertain of what type
connector the external device has, refer to the technical manual for the
external device.
1 2 3 4 5
6 7 8 9
SERIAL PORT PINOUTS
1
2
3
4
5
6
7
8
9 DCD (CARRIER DETECT)
RXD (RECEIVE DATA)
TXD TRANSMIT DATA)
DTR (DATA TERMINAL READY)
GND (GROUND)
DSR (DATA SET READY)
RTS (REQUEST TO SEND)
CTS (CLEAR TO SEND)
RI (RING INDICATOR)
PIN SIGNAL
Figure 2-7 Serial Port Location/Pinouts
2-8 Installation