Barry et al, Certainly, we're adding more Ethernet based data acquisition and control products all the time.
The applicable EMC standard is still the relatively new product family standard EN 61326-1, with it's counterpart for safety EN 61010-1. The Ethernet port has overvoltage features that should be checked (creapage, clearance, dielectric strength) that I suspect many folks neglect to do. We call for the use of shielded CAT 5 cable for our latest products being tested to EN 61326-1. A desktop computer is not too painful to replace after a damaging surge event enters the enclosure on unshielded cable, an instrument like yours/ours at many times the cost (plus the loss of it's use) is another matter. The hope is that shielded network cable will at least direct a signifficant portion the surge or transient energy to the ground system; or maybe to a less costly device elsewhere (like the local network hub). And, a hard benefit to ignore is that in EN 61326-1 the 61000-4-6 RF test is waived for I/O ports if you specify to the customer the use of shielded cable. So shielded cable also saves us a lot of test time. (I wonder if this tidbit will provoke another thread denouncing EN 61326-1? Poor EN 55024 guys.) Bytheway, I think the brain chip has a standard now, they call it BlueSkull :) Best Regards, Eric Lifsey National Instruments Please respond to "Barry Ma" <[email protected]> To: EMC-PSTC <[email protected]> cc: (bcc: Eric Lifsey/AUS/NIC) Subject: Internet port in test equipment Hi, I just read an article: Oscilloscopes plug into the Internet - A new breed of scopes adopts an "information anywhere" approach with open access to applications, interfaces, and network communications http://electronicproducts.com/ShowPage.asp?SECTION=3700&PRIMID=&FileName=JULTEK1.jul2000 I have a question. It's possible to see more and more test instruments having Internet access. Do we have relevent EMC standard regulating the network connecting port in the test instrument? Thanks. Best Regards, Barry Ma <[email protected]> ANRITSU www.anritsu.com Morgan Hill, CA 95037 Tel. 408-778-2000 x 4465 ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected]
