-48Vdc powered equipment

Hello group, My question is more market-oriented than technical. A friend is designing a -48Vdc powered voice over data product intended to be CE marked, and sold in Europe and Africa. The debate has come up whether to design the input as SELV or TNV-2. I understand that in Europe, battery vo

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It seems that this is a fairly new topic for many of us, but for my part, thanks to the group, I now have enough information to follow the correct path. Licensing is not required, but type approval is. It also seems that FCC or EU testing should get us a long way toward gaining India Type Approva

Re: India Wireless testing.

Hi All, I think I can help sort this out. The language of the WPC notification is confusing, but the straight story is that individuals or entities need not be licensed to possess, use or sell 2.4GHz radio equipment, but the equipment itself has to be type approved. One reason for the confu

RE: Kitchen Appliances

Derek, I would test for interferrence to cell phones in the low and the high bands. With cell phone desense occuring at -110 dBm the field strength needed to desense a 900 MHz cell phone is just 20 uV/m (modeling the cell phone antenna as a dipole). Figuring on a cell phone being 1 meter away this

RE: Chamber transition panels

Gary, David LAN manufacturers typically insert an RF-clean Ethernet hub between EUT and AE. You can use the ferrite decouplers of EN 55022 A2:1998 to suppress emissions from the hub. . Honeywell David W. Sterner

Re: EN 60950-1 and 3.5mm terminal blocks

Piotr, Cl. 3.5 (interconnection) should give you some guidance. John Radomski Principal Engineer Schneider Automation Inc. "Piotr Galka"

RE: India Wireless testing.

Sounds similar to FCC for Part 15 intentional radiators – license not required but certification is required… Don Umbdenstock Manager Compliance Engineering Tyco Safety Products / Sensormatic 6600 Congress Avenue Boca Raton, FL 33487 USA Phone: 561.912.6440

Re: Chamber transition panels

Hi All, I help a company get their Data Bus products EMI Compliant; they have an industrial ethernet to Fibre product that is reasonably robust, and quite low emissions. Contact me off line if you need their information. Cheers, Derek. Fred Townsend wrote on 8/30/2006, 3:14 PM: There are R

Re: Chamber transition panels

The issue of data rate has less to do with the transmission media than with other factors. Twisted pair started to become more dominant because it could be routed as a star network rather than point to point. The coaxial cable would run in a line starting at one end of the network and would go fr

RE: EN 60950-1 and 3.5mm terminal blocks

Piotr, I believe these clauses apply to ac or dc mains and protective earth connections, you can connect signal lines any way you like. Regards, David Gelfand Product Integrity Mitec Telecom Inc 9000 Trans-Canada Highway Pointe-Claire, QC Canada H9R 5Z8 514 694 9000 x2262 _ From:

EN 60950-1 and 3.5mm terminal blocks

All, Can I use 3.5mm terminal blocks in device under EN 60950-1 ? Device is powered by 12V DC LPS source. For connecting external signals (5V OC 2mA) cables with 0.5mm diameter wires (0.2mm2) are used. Each conductor is single wire so I understand these are not flexible cords. 3.5mm terminal

IEC 61000-4-3

Dear Members, I am looking for an old version of IEC 61000-4-3 to make a side-by-side comparison chart between the 3rd edition (the latest version, published Feb. 7, 2006) of IEC 61000-4-3 and its previous version (2002?). If you have an old version of IEC 61000-4-3 ( NOT EN 61000-4-3)and would

Re: Fw: Kitchen Appliances

In message , dated Thu, 31 Aug 2006, rehel...@mmm.com writes >Derek, as you have been advised by previous email, 55014-1 and 55014-2 >are the correct standards. Plus EN 61000-3-2 and EN 61000-3-3. >I would advise one other thing however. Except for toys 55014-1 only >goes to 300 MHz for emiss

Fw: Kitchen Appliances

Derek, as you have been advised by previous email, 55014-1 and 55014-2 are the correct standards. I would advise one other thing however. Except for toys 55014-1 only goes to 300 MHz for emissions (disturbance power). There was a hair dryer case that went to court (Great Britain I believe) in which

Re: India Wireless testing.

Hello Jeff Can we say that it is mandatory but not enforced well? The question here is that how many percentage of products going to certification and what the punishment if no certification? Regards Kyaw Olympus Technologies Singapore --- SIEMIC PSTC wrote: > Hello Peter, > > I am glad

Re: India Wireless testing.

Hello Peter, I am glad you took second look at the WPC Notification but we do NOT agree with your interpretation of the rules. Please see email comments below from Leslie Bai, our expertise on international approvals, and I also confirmed with our SISC - SIEMIC India Service Center, that the ap