National Instruments 3.22E+04 用户手册

© National Instruments Corporation

This manual contains instructions to help you install and configure the 
National Instruments serial hardware and the NI-Serial software for 
Windows Me/9x. This manual includes information about the PCI-232/2, 
PCI-232/4, PCI-232/8, PCI-232/16, PCI-485/2, PCI-485/4, and PCI-485/8 
boards in both isolated and non-isolated versions.

This manual assumes that you are already familiar with Windows Me/9x.

The following conventions appear in this manual:

The » symbol leads you through nested menu items and dialog box options 
to a final action. The sequence File»Page Setup»Options directs you to 
pull down the File menu, select the Page Setup item, and select Options 
from the last dialog box.

This icon denotes a note, which alerts you to important information.

This icon denotes a caution, which advises you of precautions to take to 
avoid injury, data loss, or a system crash.

Bold text denotes items that you must select or click on in the software, 
such as menu items and dialog box options. Bold text also denotes 
parameter names.

DTR

Signal names with an overscore, such as DTR, indicate that the signal is 
active low.

Italic text denotes variables, emphasis, a cross reference, or an introduction 
to a key concept. This font also denotes text that is a placeholder for a word 
or value that you must supply.

monospace

Text in this font denotes text or characters that you should enter from the 
keyboard, sections of code, programming examples, and syntax examples. 
This font is also used for the proper names of disk drives, paths, directories, 
programs, subprograms, subroutines, device names, functions, operations, 
variables, filenames and extensions, and code excerpts.