©NationalInstruments Corporation xi 6023E/6024E/6025EUser Manual
About This Manual
The 6023, 6024, and 6025 E Series boards are high-performance
multifunction analog, digital, and timing I/O boards for PCI, PXI,
PCMCIA, and CompactPCI bus computers. Supported functions include
analog input,analog output, digital I/O , and timingI/O.
This manual describes the electrical and mechanicalaspects oft he
PCI-6023E, PCI-6024E, DAQCard-6024E,PCI-6025E, and PXI-6025E
boardsfrom the E Series product l inea ndcon tains information concerning
their operation and programming.

Conventions Used in This Manual

The followingconventions are used in this manual:
<> Angle brackets containing numbers separated by an ellipsis represent a
rangeo f valuesassociated with a bit or signal name—for example,
DBIO<3..0>.
♦The♦symbo l indicates that the text followingit appliesonly to a specific
product, a specificoperating system, or a specific software version.
This icon denotes a note, which alerts you to important information.
This icon denotes a caution, which advises you of precautions to take to
avoidinjury, data loss, or a system crash.
bold Bold textden otes items that you must select or click on in the software,
such asm enu items and dialog box options. Bold text also denotes
parameter names.
CompactPCI CompactPCI refers to the core specificationdefined by the PCI Industrial
ComputerManufacturer’s Group (PICMG).
italic Italictext denotes variables, emphasis, a cross reference, or an introduction
toa key concept. This font also denotes text that is a placeholder for a word
orvalue that you must supply.
monospace Monospacefont denotes text or characters that you should enter from the
keyboard,sections of code, programming examples, and syntax examples.
Thisfont is also used for the proper names of disk drives, paths, directories,