SDSL vs. FCC

2001-02-07 Thread Dwight Hunnicutt
SDSL folks- Certainly there will be a day where FCC has published rules for SDSL, HDSL, ADSL, and any other xDSL, but does it behoove a manufacturer to bother with the whole testing/approval/FCC waiver process at this point? For manufacturers the already have xDSL products on the market, will th

Re: Product Robustness -- ESD

2001-02-07 Thread jrbarnes
Don, We use an IBM crossed-vane Electrostatic Discharge (ESD) simulator to test 110V and 110/220V products, and an IEC 61000-4-2 ESD simulator to test 220V and 110/220V products. The IEC 61000-4-2 tester works very well finding direct- discharge ESD problems. For indirect-discharge ESD, such as

Feb. 2, 2001 EMC/Telco/Product Safety Update Now Available

2001-02-07 Thread Glen Dash
The Curtis-Straus Update for the week ending Feb. 2, 2001 is now available at: http://www.conformity-update.com This week's headlines are: FCC CHAIRMAN POWELL: A CLOSER LOOK. SUPREME COURT TO TAKE UP FCC MATTERS. FCC, OSHA, NEC ENOUGH? NOW THERE'S THE ATBC. JOIN UL'S STANDARDS TECHNICAL PANELS.

RE: Ventilation calculations

2001-02-07 Thread Chris Chileshe
Hi John, I have assumed you are referring to electronic circuits on PCBs. and if this is not correct, you'd do well to stop here. You will probably get much better responses to your query than this one, but for what it is worth, here it is. It is possible to do the calculations you seek, but is