NI SHC68-68-EPM high-performance shielded cable

NI SHC68-68-EPM high-performance shielded cable

The specification and selection manual for NI SHC68-68-EPM high-performance shielded cable introduces that the 1-meter-long 68 pin VHDCI to 68 pin D-type cable adopts independent shielded twisted pair, segmented shielding, copper braided tin plated shielding layer and other noise reduction designs, and is compatible with the M series DAQCard、 Some S-series DAQ devices can be connected to signal conditioning accessories such as SCXI, SCC, SCB-68, BNC terminals, etc; At the same time, a complete selection table for NI's full range of 68 pin/100 pin/37 pin DAQ cables, junction boxes, and terminal boards will be compiled, covering scenarios such as analog, digital, counter, and analog output, and providing NI technical support and service information.

Core product: SHC68-68-EPM cable

Positioning: High performance noise reduction 68 pin shielded cable, structural advantage with a length of 1 meter

Analog input: independent shielded twisted pair cable+discharge wire (30AWG)

Analog output: Independent twisted pair shielded separately

Digital cable: twisted pair grounding+integral copper braided tin plated shielding

+5V power supply: 26AWG thick wire reduces voltage drop

interface

One end: VHDCI 68 pin male head

One end: 68 needles, 0.050 D-type female head

Full range DAQ cable classification (core table)

1. 68 pin mainstream cable

Model Type Characteristics Applicable Equipment

SHC68-68-EPM high-performance shielding segmented shielding, strongest noise reduction M series, DAQCard, S series

SHC68-68 standard shielded twisted pair, unshielded M-series

SH68-68-EP Universal Shielding High Cost Performance Noise Reduction E/S/B Series

RC68-68 flat ribbon cable, low-cost, unshielded DAQCard, M series

SHC68-68-RDIO/RMIO R series dedicated matching MIO/DIO interface NI 78xxR

2. 100 pin/37 pin cable

100 needles: SH100100, SH1006868 (compatible with E-series DIO)

37 needles: SH37F-37M, DB37M-DB37F-EP (high-voltage isolation model)

Adapt wiring terminal accessories

1. High performance shielding type

SCB-68/SCB-100: Shielded junction box with cold end compensation, 68/100 pins

SCC-68: Portable signal conditioning carrier, supporting 4 SCC modules

BNC-2110/211/2120/2090A: BNC direct access, suitable for laboratories

2. Low cost type

CB-68LP/CB-68LPR: 68 screw terminal, vertical/right angle interface

CB-37 series: 37 pin DIN rail terminal, 150V CAT II

3. PXI specific

TB-2705/2706/2708/2709: Panel mounted terminals, SMB/screw interface

Support series and connection rules

M series: Priority SHC68-68-EPM, can be connected to SCXI/SCC/SCB-68

E series: using SH68-68-EP, compatible with SCXI and 50 pin adapter

S series: SH68-68-EP for high-speed models, SHC68-68-EPM for 6143

R Series: Specialized SHC68-68-RDIO/RMIO

DAQCard: SHC68-68-EPM must ensure EMC

Safety and Compliance

EMC：FCC Part 15A、CE、C-Tick

Safety: IEC 61010-1, CAT I, Pollution Level 2

Must be paired with shielded cables to meet compliance requirements

Key questions and answers

Question 1: What are the core advantages of SHC68-68-EPM over regular 68 pin cables? Why is it necessary to use it in industrial scenarios?

Answer: The core advantage is multi-level shielding and noise reduction: independent shielding of analog channels+grouped shielding of digital segments+overall copper braided shielding, which can significantly reduce industrial environmental interference; Ordinary cables only have twisted pair cables without segmented shielding. Industrial data collection (such as sensors, strain, temperature) must use it to ensure signal accuracy and EMC compliance.

Question 2: Which DAQ devices and terminals can be connected to SHC68-68-EPM? What can't be accepted?

Answer: Can be connected to: M series DAQCard、 Partial S-series DAQ; SCB-68, SCC-68, SCXI, BNC-21xx cannot be connected: 61XXE series DAQ, SCXI switch module, unshielded low-cost system

Question 3: Why is it recommended to use SHC68-68-EPM in combination with SHC68-68 on the M-series dual channel DAQ?

Answer: M-series Connector 0 is the main channel and requires high-precision SHC68-68-EPM; Connector 1 is an auxiliary channel that can use standard SHC68-68. Balancing the high precision of the main channel with the cost-effectiveness of the auxiliary channel, while avoiding space and cost waste caused by dual high-performance cables.