AO Waveform Calibration Procedure for NI-DAQmx
2
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Conventions
The following conventions appear in this manual:
<>
Angle brackets that contain numbers separated by an ellipsis represent a
range of values associated with a bit or signal name—for example,
P0.<0..7>.
»
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.
bold
Bold text denotes items that you must select or click in the software, such
as menu items and dialog box options. Bold text also denotes parameter
names and hardware labels.
italic
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
Monospace text 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.
monospace italic
Italic text in this font denotes text that is a placeholder for a word or value
that you must supply.
Introduction
This document contains instructions for calibrating NI 671
X
/672
X
/673
X
for PCI/PXI/CompactPCI analog output (AO) devices.
This document does not discuss programming techniques or compiler
configuration. The National Instruments DAQmx driver contains help files
that have compiler-specific instructions and detailed function explanations.
You can add these help files when you install NI-DAQmx on the calibration
computer.
AO devices should be calibrated at a regular interval as defined by
the measurement accuracy requirements of your application. National
Instruments recommends that you perform a complete calibration at least
once every year. You can shorten this interval to 90 days or six months.
