National Instruments SHC68-C68-D4 Shielded single-ended digital cable

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National Instruments · NI digital instruments

SHC68-C68-D4

Name: SHC68-C68-D4
Brand: National Instruments

The NI SHC68-C68-D4 is a shielded, 50 Ω digital cable with 68-pin VHDCI male connectors at both ends. It connects supported NI digital instruments to compatible accessories.

ManufacturerNational Instruments

ModelSHC68-C68-D4

Part Number781013-01 · 196275-01

Product TypeShielded single-ended digital cable

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Connectors68-pin VHDCI male at both ends

Characteristic impedance50 Ω ±10% for documented 0.55 m, 1 m and 2 m variants

ConstructionIndividually shielded mini-coaxial conductors with overall cable shielding

Variant choices0.55 m, 1 m, 1 m low-leakage, 2 m and 3 m lower-DC-resistance versions

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Overview

Product overview

Key product information and technical features.

The SHC68-C68-D4 provides a shielded interconnect for supported NI high-speed digital systems. NI identifies uses with digital waveform and digital pattern instruments, selected FlexRIO adapter modules and high-speed serial instruments.

Cable length and construction depend on the part number. This catalog record identifies the cable model but does not establish which length or special variant applies to the individual item.

VHDCI-to-VHDCI connection for supported digital instruments and accessories.
Mini-coaxial construction with individual conductor shielding and overall shielding.
The 1 m low-leakage variant receives additional cleaning during manufacturing to reduce induced current leakage.

Verified specifications

Technical data

Verified product specifications.

Connector configuration	68-pin VHDCI male to 68-pin VHDCI male
Characteristic impedance	50 ±10%; applies to the 0.55 m, 1 m, 1 m low-leakage and 2 m variants in the cited specification Ω
Maximum voltage	±30; connected-device operating limits must also be observed VDC
Nominal resistance by length	0.55 m: 0.3; 1 m and 1 m low-leakage: 0.5; 2 m: 1 Ω
Nominal capacitance by length	0.55 m: 60; 1 m and 1 m low-leakage: 100; 2 m: 200 pF
Nominal propagation delay by length	0.55 m: 2.7; 1 m and 1 m low-leakage: 4.9; 2 m: 9.6 ns
Nominal channel-to-channel skew by length	0.55 m: 50; 1 m and 1 m low-leakage: 50; 2 m: 75 ps

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Compatibility

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National Instruments

Manufacturer

NI digital instruments

Supported instrument ecosystem

SHC68-C68-D4

Shielded digital interconnect

Example accessories

CB-2162 connector block and SMB-2163 terminal block, subject to the instrument-specific connection requirements.

Confirm the cable part number, instrument model, accessory and pinout before connection; a matching connector alone does not establish compatibility.

Manuals & software

Technical resources

Manuals, software and technical resources for this model.

SHC68-C68-D4 Cable Product PageProduct Page · ni.com

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SHC68-C68-D4 SpecificationsSpecifications PDF · download.ni.com

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NI SHC68-C68-D4 Hardware CompatibilityCompatibility Guide · ni.com

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68-Pin VHDCI Cables: Digital Instrument Cable GuideTechnical resource

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Wire Mapping for SHC68-C68-D3 and SHC68-C68-D4Technical resource

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Alternatives & system components

FAQ

Product-specific questions

Product-specific answers based on available technical information.

Which part number corresponds to each cable variant?

NI lists 781013-01 for 0.55 m, 196275-01 for 1 m, 152870-01 for 1 m low-leakage, 781293-01 for 2 m and 132625-03 for 3 m lower DC resistance. The supplied catalog record does not identify the individual item's variant.

Where can I find the cable wire mapping?

NI provides separate SHC68-C68-D4 mappings for pins 1–34 and pins 35–68 in its wire-mapping support article.