The Ferrite Cores??? at DVinfo.net

Andrew Hogan · January 6th, 2004, 07:28 PM

I just bought a new XM2 yesterday. The first paragraph in the manual says I should attach these two Ferrite Cores to some video cables. I remember doing this on my orginal XL1 but not on my replacement XL1s.

So, I don't really know what they are for. I guess they're for stopping some sort of electrical interference.

The manual only says that they must be attached to comply with the Technical requirements of EMC Directive.

Why don't Canon automatically attach them? Or, is there a benefit to leaving them off? or does the manufacturer say attach them for "Legal Reasons"?

Brian Klug · January 6th, 2004, 10:09 PM

I had a old telephone that picked up FM radio interference once. I put one on the phone cord and it actually eliminated the problem 90%.

It is probably cheaper for them to have you put them on, because they don't give them to everybody.

Cheers,
-B

Nicholi Brossia · January 7th, 2004, 05:18 PM

I have a GL2 but haven't read anything about Ferrite Cores. Am I missing something?

Jeff Donald · January 7th, 2004, 10:35 PM

They may reduce RF that causes interference. Some countries may require that certain device accept the interference caused by RF or minimize the RF. Not all products, in all countries, will require the ferrite cores. The FCC, in the United States, may not require this level of protection, for the GL1/GL2. Regulations in other countries may differ.

Rob Wilson · January 7th, 2004, 10:51 PM

Not sure but I think the cores work in both directions. It may be that the GL2 power supply induces more noise than is acceptable for the standards in your country but not others.

Jeff Donald · January 7th, 2004, 10:54 PM

Ferrite cores do indeed work in both directions. My post is a little ambiguous. The effectiveness on some types of interference is debatable.

January 6th, 2004, 07:28 PM	#1
Andrew Hogan Regular Crew Join Date: Nov 2001 Location: Canberra AUSTRALIA Posts: 169	The Ferrite Cores??? I just bought a new XM2 yesterday. The first paragraph in the manual says I should attach these two Ferrite Cores to some video cables. I remember doing this on my orginal XL1 but not on my replacement XL1s. So, I don't really know what they are for. I guess they're for stopping some sort of electrical interference. The manual only says that they must be attached to comply with the Technical requirements of EMC Directive. Why don't Canon automatically attach them? Or, is there a benefit to leaving them off? or does the manufacturer say attach them for "Legal Reasons"?

January 7th, 2004, 05:18 PM	#3
Nicholi Brossia Major Player Join Date: Jun 2003 Location: Oklahoma City, OK Posts: 389	I have a GL2 but haven't read anything about Ferrite Cores. Am I missing something? __________________ Nicholi Brossia

January 7th, 2004, 10:35 PM	#4
Jeff Donald Warden Join Date: Mar 2002 Location: Clearwater, FL Posts: 8,287	They may reduce RF that causes interference. Some countries may require that certain device accept the interference caused by RF or minimize the RF. Not all products, in all countries, will require the ferrite cores. The FCC, in the United States, may not require this level of protection, for the GL1/GL2. Regulations in other countries may differ. __________________ Jeff Donald Carpe Diem Search DVinfo.net for quick answers \| Where to Buy? From the best in the business: DVinfo.net sponsors

January 7th, 2004, 10:54 PM	#6
Jeff Donald Warden Join Date: Mar 2002 Location: Clearwater, FL Posts: 8,287	Ferrite cores do indeed work in both directions. My post is a little ambiguous. The effectiveness on some types of interference is debatable. __________________ Jeff Donald Carpe Diem Search DVinfo.net for quick answers \| Where to Buy? From the best in the business: DVinfo.net sponsors

January 6th, 2004, 10:09 PM	#2
Brian Klug New Boot Join Date: Nov 2003 Location: Maryland Posts: 7	I had a old telephone that picked up FM radio interference once. I put one on the phone cord and it actually eliminated the problem 90%. It is probably cheaper for them to have you put them on, because they don't give them to everybody. Cheers, -B

January 7th, 2004, 10:51 PM	#5
Rob Wilson Major Player Join Date: Dec 2002 Location: Flagstaff, AZ Posts: 473	Not sure but I think the cores work in both directions. It may be that the GL2 power supply induces more noise than is acceptable for the standards in your country but not others.