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
HI Susan,
we may be of help, what specifically do you want to know?
Derek Walton
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
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
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
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
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
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:
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
-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.
--
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
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