About This ManualPCI-DIO-96/PXI-6508/PCI-6503 User Manual x ni.commonospace Text in this font denotes text or characters that you should enter from thekeyboard, 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.PPI x PPI x, where the x is replaced by A, B, C, or D, refers to one of the fourprogrammable peripheral interface (PPI) chips on the PCI-DIO-96 orPXI-6508. The PCI-6503 contains only one PPI, PPI A.Your DIO board Your DIO board refers to either the PCI-DIO-96, PXI-6508, or PCI-6503board.Related DocumentationThe following National Instruments document contains information thatyou may find helpful as you read this manual.• Field Wiring and Noise Considerations for Analog Signals—To accessthis document, go to ni.com/info and enter the info code rdfwin.• PCI Local Bus Specification, Revision 2.1• National Instruments PXI Specification, Revision 1.0• PICMG 2.0 R2.1 CompactPCI• Software documentation—Examples of software documentation youmay have are the LabVIEW or LabWindows™ /CVI ™ documentationsets and the NI-DAQmx or Traditional NI-DAQ (Legacy)documentation. After you set up your hardware system, use either theapplication software or the NI-DAQ documentation to help you writeyour application. If you have a large and complicated system, it isworthwhile to look through the software documentation before youconfigure your hardware.• Accessory installation guides or manuals—If you are using accessoryproducts, read the terminal block and cable assembly installationguides or accessory board user manuals. They explain how tophysically connect the relevant pieces of the system. Consult theseguides when you are making your connections.