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National Instruments · NI R Series

SHC68-68-RDIO

The NI SHC68-68-RDIO is a shielded digital cable for the DIO connectors of supported R Series devices. It connects a 68-pin VHDCI male interface to a 68-pin SCSI-II female interface.

ManufacturerNational Instruments

ModelSHC68-68-RDIO

Part Number191667-01

Product TypeShielded digital I/O cable

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Connection68-pin SCSI-II female to 68-pin VHDCI male

Signal routingDigital signals individually twisted with digital ground

Documented 1 m variantPart number 191667-01

Expansion chassis supportNI-9151

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Overview

Product overview

Key product information and technical features.

The RDIO cable uses signal-specific routing rather than relying only on matching connectors. Each digital signal runs on an individually shielded pair with its own digital-ground wire, supporting signal integrity and noise immunity.

NI lists this cable for selected PCI, PCIe and PXI R Series devices with compatible digital I/O ports. Select the cable by the exact device model and port type; other R Series devices require different RDIO2 cabling.

Shielded construction designed for supported reconfigurable digital I/O connections.
Individually shielded digital signal/ground twisted pairs.
All DGND lines are internally interconnected within the cable.
Official dimensional drawings and wire-mapping resources support integration planning.

Verified specifications

Technical data

Verified product specifications.

Connector 1	68-pin SCSI-II female
Connector 2	68-pin VHDCI male
Cable shielding	Shielded
Length of part number 191667-01	1 m
Digital ground connections	All DGND lines internally connected

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National Instruments

Manufacturer

R Series digital I/O

Supported device interface

SHC68-68-RDIO

Shielded digital interconnect

Terminal block

SCB-68 or SCB-68A for the supported device combinations listed by NI.

Match the exact device and DIO port against NI's compatibility guide. Matching connector shapes do not establish signal-specific cable interchangeability.

Manuals & software

Technical resources

Manuals, software and technical resources for this model.

SHC68-68-RDIO Cable Product PageProduct Page · ni.com

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SHC68-68-RDIO Cable Dimensional DrawingsDimensional Drawings And CAD · ni.com

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NI 78xx Models: R Series Cable and Accessory CompatibilityCompatibility Guide · ni.com

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Wire Mapping for SHC68-68-RDIO and SHC68-C68-RDIO2 CablesTechnical resource

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Cable Compatibility for NI-7831RTechnical resource

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FAQ

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Product-specific answers based on available technical information.

Is the SHC68-68-RDIO interchangeable with an SHC68-68-EPM cable?

NI does not support that substitution for the NI-7831R application. Although the connectors may appear identical, cable bundling and shielding are application-specific.

Where can I find the cable wire map?

NI's wire-mapping article provides shielded-pair and color-code information for the SHC68-68-RDIO. It also states that all DGND lines are internally connected.

Does this cable support the NI-9151?

Yes. NI identifies the SHC68-68-RDIO as a cable for the NI-9151 expansion chassis. Verify the connected R Series device separately.