© National Instruments Corporation xi NI 6013/6014 User ManualAbout This ManualThe National Instruments 6013/6014 devices are high-performancemultifunction analog, digital, and timing I/O devices for PCI. The NI 6014features 16 channels (eight differential) of 16-bit analog input (AI),two channels of 16-bit analog output (AO), a 68-pin connector, andeight lines of digital I/O (DIO). The NI 6013 is identical to the NI 6014,except that it does not have AO channels.This manual describes the electrical and mechanical aspects of theNI 6013/6014 and contains information concerning their operation andprogramming.Conventions Used in This ManualThe following conventions are used in this manual:<> Angle brackets containing numbers separated by an ellipsis representa range of values associated with a bit or signal name—for example,DIO<3..0>. Angle brackets can also denote a variable in a channelname—for example, ACH<i> and ACH<i+8>.♦ The ♦ symbol indicates that the text following it applies only to a specificproduct, a specific operating system, or a specific software version.» The » symbol leads you through nested menu items and dialog box optionsto a final action. The sequence File»Page Setup»Options directs you topull down the File menu, select the Page Setup item, and select Optionsfrom 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 toavoid injury, data loss, or a system crash. When this symbol is marked onthe device, refer to Appendix A, Specifications, for precautions to take.6013/6014 This phrase denotes the NI PCI-6013 and NI PCI-6014 devices.bold Bold text denotes items that you must select or click in the software, suchas menu items and dialog box options. Bold text also denotes parameternames and hardware labels.