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What is the difference between the D1/D3/D4 SHC68-C68 Cables

Hardware: Legacy DAQ Devices>>Multifunction DAQ

Problem:
NI makes several different SHC-C68 cables, what is the difference?

Solution:
The SHC/SH-68-C68 cables have 4 different varieties, D1, D2, D3 and D4. It is important to note the connector type and recommended devices.

The D1 is a single shielded cable with female D-type connectors and is recommended for Counter/Timer devices. The D3 has a 100Ω impedance and VHDCI connectors and is recommended for digital data and control (DDC). The D4 is similar to the D3, but only has a single layer of shielding.

The D2 has been discontinued because of a change in one of our suppliers and is no longer available, and has been replaced by the D4. If you still have D2 cables you should be able to use them interchangeably with the D4.

For more detailed specification and product info check the related links below.

SHC-68-C68 Cable Comparison
Cable	SH68-D1	SHC68-C68-D2	SHC68-C68-D3	SHC68-68-D4
Connector A	female 0.050 D-type	VHDCI	VHDCI	VHDCI
Connector B	female 0.050 D-type	VHDCI	VHDCI	VHDCI
Shielding	Single	Single	Double	Single
Impedence	50Ω	50Ω	100Ω	50Ω
Use	Counter/Timer	Discontinued	DDC	High Speed Digital
Recommended For	670x	-	5421	6536/37, 654x

Related Links:
SH68-86-D1 Product Page
SHC68-C86-D3 Product Page
SHC68-C86-D4 Product Page

Attachments:

Report Date: 12/01/2008
Last Updated: 01/02/2009
Document ID: 4S0EHKZD

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