National Instruments 3.22E+04 用户手册

Before you install your serial hardware and the NI-Serial software, make 
sure you have all of the following items:

❑

Windows Me/9x installed on your computer

❑

One of the following serial boards, which is included in your kit:

–

PCI-232 (two-, four-, eight-, or sixteen-port)

–

PCI-485 (two-, four-, or eight-port)

–

PCI-232 isolated (two- or four-port)

–

PCI-485 isolated (two- or four-port)

❑

CD, NI-Serial Software for Windows 2000/NT/Me/9x, which is 
included in your kit

For more information about ordering the following optional equipment, 
contact National Instruments:

•

DB-9 RS-485 termination connector (PCI-485 only)

•

10-position modular jack to DB-9 cable (four-port boards only)

•

10-position modular jack to DB-25 cable (four-port boards only)

•

68-pin to DB-9 adapter cable (eight-port boards only)

•

RS-232 9-pin to 9-pin null modem cable

•

RS-232 9-pin to 25-pin null modem cable

•

RS-485 9-pin to 9-pin null modem cable

•

Breakout box (PCI-232/16 port-board only)

The serial hardware gives you a variety of solutions for serial 
communication. The PCI-232 boards work with the RS-232 protocols, and 
the PCI-485 boards work with the RS-422 and RS-485 protocols. You can 
use the PCI-232 boards for serial communication up to distances of 50 ft. 
You can connect the PCI-485 boards to up to 31 devices using serial cable 
lengths up to 4,000 ft.