Re: Safety Certs - custom lamps

2002-03-29 Thread Emmanuel . B . Imson
Hi George, You have two options. UL can actually conduct a Field Evaluation of your products if they have already been installed in the field (a UL engineer will go to the site and perform evaluation of the products). If not, you can actually submit the products for investigation. If these

Re: radiated HIRF testing levels modulations

2002-03-29 Thread Lfresearch
HI Susan, we may be of help, what specifically do you want to know? Derek Walton

EMC Lab Tech

2002-03-29 Thread Mike Schultz
Seeking a position as an EMC Lab Technician. Testing electronic products for electromagnectic compatability to standards such as FCC, CISPR, GR-1089. I am proficient in the following tests; RDE, CDE, RDI, CDI, ESD, EFT, Harmonics, Flicker, Surge, and Voltage,Dips, and Sags. 5+ years

Immunity, Emissions, and Safety Standards for 4-20 mA Industrial Process Monitoring Loops

2002-03-29 Thread Don_Borowski
I am wanting to find standards covering immunity, emission, and safety standards for 4-20 mA industrial process monitoring loops. I have the technical standard ANSI/ISA-S50.1-1982 (R1992) which contains the standards about how the loop works (current levels, resistances, etc), but the standard

RE: EMC test set-up for device with ethernet connection

2002-03-29 Thread Mike Hopkins
David -- how are you coupling into the signal line?? The diagram shows the 0.5uF capacitor in series with a 40 ohm resistor -- are you using these values?? If I'm doing the math correctly, a 20mH coil has an impedance of about 12.5k ohms at 100kHz (2 x 3.14159 x 100kHz x 20mH), and about 370

EMC test set-up for device with ethernet connection SUMMARISE

2002-03-29 Thread jan . mobers
Hello news group readers, MANY thanks for your replies on my question. The general advice was to place the PC outside the anechoic room. And to try to test with a constant communication for reproducibly. A second point was that David Sterner has advised a test set-up for the ethernet in

RE: EMC test set-up for device with ethernet connection

2002-03-29 Thread David_Sterner
Ari, Circuit diagram is EN61000-4-5: Figure 10. My coil was 20mH coil: www.wilcocorp.com P/N HFT-203 which has a DC resistance, R(L), of 2 ohms. The key is minimizing R(L). Ethernet incorporates internal threshold-detection and noise-rejection; low level signals are rejected both devices on

Re: EMC test set-up for device with ethernet connection

2002-03-29 Thread Michael Hopkins
Thanks for all the inputs... I'll forward them to WG11 members prior to the May meeting. Best Regards, Mike Hopkins - Original Message - From: david_ster...@ademco.com To: mhopk...@thermokeytek.com Cc: emc-p...@majordomo.ieee.org Sent: Thursday, March 28, 2002 2:21 PM Subject: RE:

Re: EN 61010-1 2001 and IEC61010-3

2002-03-29 Thread John Woodgate
I read in !emc-pstc that Andrew Wood andrew.w...@landinst.com wrote (in e49d8b319a2fd5119e2808002bc33c591c8...@landuk1.landinst.com) about 'EN 61010-1 2001 and IEC61010-3', on Fri, 29 Mar 2002: Apologies. Although I used my address in the original posting, I omitted it from my reply. Hence you

RE: EN 61010-1 2001 and IEC61010-3

2002-03-29 Thread Andrew Wood
-Original Message- From: John Woodgate [SMTP:j...@jmwa.demon.co.uk] Sent: 28 March 2002 16:41 To: emc-p...@majordomo.ieee.org Subject: Re: EN 61010-1 2001 and IEC61010-3 In the USA, I suppose you have to find someone who is a member of the USNC TAG for SC62A. --

RE: Safety Certs - custom lamps

2002-03-29 Thread Sam Davis
He doesn't necessarily need field evaluations, from what I'm reading. Just because they're custom, doesn't mean the designs cannot be integrated into one UL/CSA/NRTL report. I worked at UL for a few years, and performed evaluations on portable lamps and fixtures (Luminaires now) as well as many