Chapter 2
Installation and Verification
PCI Serial for Windows 95
2-8
©
National Instruments Corporation
Figure 2-6 and Table 2-2 give the pin locations and descriptions of the
10-position modular jack, which is found on the four-port PCI serial board.
Figure 2-6. 10-Position Modular Jack Pin Locations
Table 2-2. 10-Position Modular Jack Pin Descriptions
10 Position
Modular Jack
232 Signal
485 Signal
Pin 10
DCD
GND
Pin 9
RXD
CTS+ (HSI+)
Pin 8
TXD
RTS+ (HSO+)
Pin 7
DTR
RXD+
Pin 6
GND
RXD-
Pin 5
DSR
CTS- (HSI-)
Pin 4
RTS
RTS- (HSO-)
Pin 3
CTS
TXD+
Pin 2
RI
TXD-
Pin 1
No Connect
No Connect
Pin 10
Pin 1
