Terminology » RF Components » SHC68 C68 Cable Types: D1, D2, D3, D4 Comparison

SHC68 C68 Cable Types: D1, D2, D3, D4 Comparison

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This page outlines the differences between SHC68 C68 cable types (D1, D2, D3, D4) and specifically compares the SH68 68 D1, D2, D3 and SHC68-C68-D4 cables.

Introduction

SHC-C68 cables are manufactured by National Instruments (NI). There are four primary types of SHC-C68 cables, each designed with specific connector types, impedance characteristics, shielding levels, and intended applications in mind.

NI SHC68 C68 cable

The figure above illustrates a high-speed digital cable from National Instruments, specifically the SHC68-C68 type.

SH68-68-D1 Cable

  • Connector A/B: Female 0.050 D-type
  • Shielding: Single
  • Impedance: 79 Ohm
  • Applications: Recommended for use with counter/timer devices.

SHC68-C68 D2 Cable

  • Connector A/B: VHDCI
  • Shielding: Single
  • Impedance: 50 Ohm
  • Availability: No longer available; replaced by the D4 type.

SHC68-C68 D3 Cable

  • Connector A/B: VHDCI
  • Shielding: Double
  • Impedance: 100 Ohm
  • Applications: Used for DDC (Digital Data and Control).

SHC68-C68 D4 Cable

  • Connector A/B: VHDCI
  • Shielding: Single
  • Impedance: 50 Ohm
  • Applications: Used for HSDIO (High-Speed Digital I/O).
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