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To our valued customers: Our offices will be closed November 23rd and 24th in observance of the Thanksgiving holiday.

Cable Shielding - How it Works
(Tuesday, December 15, 2015)
 
Shielded Ethernet cable was designed for use in environments where electromagnetic interference (EMI) and radio frequency interference (RFI) are present.

Examples of such areas include manufacturing, automation and Industrial control applications where motors, generators, transformers and other noise emitting industrial machines are in use.

L-com offers several variations of shielded Ethernet cables for use in these environments including single foil shielded assemblies for areas with minimal EMI and RFI. Although Foil shielding provides 100% coverage of the conductors, it is hard to effectively terminate to connectors and offers high resistance which does not provide the best path to ground. 


L-com also manufactures double shielded Ethernet cable assemblies with foil and braid shield for use in applications where heavy EMI and RFI is present.

Braided shield generally offers 60%-85% shielding and can only offer about 95% coverage at best. The mass of the braid is higher than a foil shield and thus provides better conductivity and offers a secure connection to the connectors at the cable ends providing an excellent ground.


The shielding can deal with EMI and RFI in two ways. It can reflect the energy.


Or, it can pick up the interference and conduct it to ground, keeping the EMI and RFI away from the twisted pairs located under the shielding.





Whether the EMI/RFI is reflected off the shield or "rides" the shield to ground, some energy can still pass through the shielding, but since it is so highly attenuated it will not cause interference.

L-com offers many types of single and double shielded Ethernet cable assemblies and bulk cable including different jacket options, colors and lengths.  

If you can't find what you're looking for off-the-shelf, L-com can custom manufacture shielded Ethernet cables to your exact specifications.

Download our Cable Requirements for Harsh Environments whitepaper.
 


Other newsletters that may be of interest to you:
 
6/13/2016 The Benefits of 24 AWG Cable
5/24/2016 Why our Premium D-Sub Cables are Superior
5/17/2016 An A to Z review of the 802.11 standards
4/12/2016 USB Type-C Cable Assemblies Provide Legacy USB Connectivity
3/1/2016 Passive Intermodulation (PIM) Explained
2/2/2016 The Industrial Internet of Things (IIoT)
12/15/2015 Cable Shielding - How it Works
12/1/2015 Embedded Antennas and the IoT
11/10/2015 Long Live RS-232!
9/22/2015 The Differences between Solid and Stranded Cable
9/15/2015 Coaxial Connector Termination: Which Technique is Right for You
8/11/2015 802.11ah Breathes New Life to the 900 MHz Frequency Band
7/14/2015 Cable Options For Every Application
7/7/2015 900 MHz - Your NLOS Friend
6/2/2015 802.11ax Offers Blazing Fast Wi-Fi Connectivity
5/12/2015 The NBASE-T Alliance - Fostering Multi-Gig Speeds over Cat5e/6 Cabling
4/7/2015 L-com and The Internet of Things (IoT)
3/3/2015 802.3bt the Promise for Higher Power PoE
1/6/2015 L-com's Family of Brands - A Solution for Every Application
12/9/2014 Cat6a Products for High-Speed Networking
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L-com Global Connectivity           50 High Street           North Andover, MA 01845
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