Chapter 2 Installation and Verification
Serial for Windows NT
2-8
©
National Instruments Corporation
Connect the Cables
For the PCMCIA serial cards or two-port AT serial boards, you can use
the standard DB-9 connector found on most serial cables. To use the
DB-9 connector with the four-port AT serial boards, you need the
10-position modular jack to DB-9 cable available from National
Instruments. This cable is included with the isolated four-port kits. You
can also use a DB-25 connector with the four-port AT serial boards by
ordering the 10-position modular jack to DB-25 cable from National
Instruments.
Note:
To achieve the specified isolation voltage for four-port isolated AT
boards, use
ONLY
the 10-position modular jack to DB-9 cable included in
your four-port isolated AT serial board kit.
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 AT serial board, the
10-position modular jack to DB-9 cable, and the PCMCIA serial cable.
PIN 1
PIN 9
PIN 5
PIN 6
Figure 2-5. DB-9 Connector Pin Locations
