Chapter 2
Installation and Verification
©
National Instruments Corporation
2-7
PCI Serial for Windows 95
Figure 2-5 and Table 2-1 give the pin locations and descriptions of the
DB-9 connector, which is found on the two-port PCI serial board,
the 10-position modular jack to DB-9 cable, and the cable adapter for
the eight-port board.
Figure 2-5. DB-9 Connector Pin Locations
Table 2-1. DB-9 Pin Descriptions
DB-9 Pin
232 Signal
485 Signal
Pin 1
DCD
GND
Pin 2
RXD
CTS+ (HSI+)
Pin 3
TXD
RTS+ (HSO+)
Pin 4
DTR
RXD+
Pin 5
GND
RXD-
Pin 6
DSR
CTS- (HSI-)
Pin 7
RTS
RTS- (HSO-)
Pin 8
CTS
TXD+
Pin 9
RI
TXD-
PIN 1
PIN 9
PIN 5
PIN 6
