USER GUIDENI 653x Cable AdapterThe NI 653x cable adapter interfaces with National Instruments high-speeddigital I/O (DIO) devices. The cable adapter provides an easy way toconnect the Very High Density Connector Interface (VHDCI) connectors,labeled as Digital Data & Control, on the newer NI 6535/6536/6537devices to the 68-pin DAQ connectors found on older NI 6533/6534accessories and fixturing. The 653x cable adapter is also compatible withthe NI 654x and NI 655x digital pattern generator/analyzer devices.For best signal integrity, NI recommends using the NI 6535/6536/6537devices with newer accessories such as the NI CB-2162 and NI SMB-2163.This guide explains how to set up and use the NI 653x cable adapter.ContentsWhat You Need to Get Started ............................................................... 2Related Documentation........................................................................... 2Parts Locator Diagram ............................................................................ 3Installing Cables...................................................................................... 4Removing the NI 653x Cable Adapter from its Enclosure ..................... 5Connecting Signals ................................................................................. 6Custom Wiring Example ................................................................. 11Specifications .......................................................................................... 13Digital I/O ........................................................................................ 13Traces............................................................................................... 13Power ............................................................................................... 13Physical............................................................................................ 13Where to Go for Support......................................................................... 14