68-Pin SCSI Cables : DAQ Multifunction I/O Cable Guide

This guide is intended to cover the most popular SCSI 0.050 68-pin cables designed for use with NI DAQ devices. It does not cover similar cables for other NI product lines, even if they share the same connectors.

• Learn more about popular VHDCI 68-pin DAQ cables.
• To find more information about other NI DAQ cables and general information that applies to all DAQ cables, visit DAQ Multifunction I/O Cable Guide Main Page.
• To determine compatibility of your 68-pin cable with your NI DAQ device or module, your NI DAQ connector black or terminal block, visit DAQ Multifunction I/O Cable and Accessory Compatibility or review the general compatibility information below.
• To learn more about NI DAQ connector and terminal block accessories two which you can connect your cable, review DAQ Multifunction I/O Accessory Guide.
• To create your own cable or test fixture, or to repair an existing NI DAQ cable or accessory, visit NI DAQ Device Custom Cables, Replacement Connectors, and Screws.

This section provides a brief summary of acronyms and terminology used on these SCSI 68-pin cables. For more in depth information about other SCSI connectors as well as the terminology listed on this page, visit the main DAQ cables guide.

Naming Summary for this Guide

• SH - Shielded cable assembly with a SCSI connector on the device or module end of the cable.
• R - Unshielded ribbon cable with a SCSI connector on the device or module end of the cable.
• 68-68 - This indicates 68-pin connector found on each end.
• R1 - Indicates a right angled connector used on one end of the cable.
• -EPM - NI's latest generation of shielded "Enhanced Performance" cable assembly offering superior noise reduction
• -EP - NI's previous generation of shielded "Enhanced Performance" cable assembly offering noise reduction.
• -D1 - Typically indicates use with counter/timer (TIO) applications and certain other specific DAQ applications.
• -S - These cables are designed for switching and motion applications. Only used with DAQ models when specifically recommended.

Shielding and Twisted Pairs

Cable shielding utilizes a thin conductive metallic layer to protect against electromagnetic interference. Twisted pairs provide another level of noise reduction by twisting pairs of differential signals. Click here to learn more about cable shielding and twisted pairs.

NI offers a wide range of cables to work with different DAQ products, serving a variety of needs. While the wire pinout may be the same on most cables, each offers different connectors, shielding, and twisted pairs. 

• Check out 68-pin VHDCI 0.8 mm DAQ cables like the SHC68-68-EPM.
• Check out other popular DAQ cables with SCSI 0.050 D-Type, VHDCI and D-Sub connectors.
• Review which cables are compatible with your device, module or accessory.

This section contains a summary of information frequently sought when installing or customizing 68-pin SCSI DAQ cables. More detailed information can be found in the linked additional resources below. Dimensional drawings can be downloaded for free and are available in 2D and 3D formats; they contain size measurements, part numbers, wire mappings and other helpful information. They are available in several popular formats, such as PDF, AutoCAD (.dxf, and .igs (IGES)), STEP (.stp), and .prt (Pro/E).

This section is a summary of the most common use cases. Please refer to the compatibility guide for complete coverage for your device or module with your cable and connector block or terminal block.

• Learn about cable terminology, model differences, troubleshooting unexpected readings and other common questions for other DAQ cables.
• Learn about NI DAQ connector and terminal block accessories, including common questions and needs.
• Learn about the compatibility of NI DAQ devices and modules with NI DAQ cables and accessories.
• Find the parts needed to make a custom cable, breakout fixture, or replace connectors and screws on NI DAQ hardware.
• Browse dimensional drawings for NI DAQ cables and accessories.