Ron:
If you can get hold of a megger, thre is a procedure in the megger manual
for verifying the continuity and the resitance to ground of a system
composed of ground rods. Its been a long time since I did it so can't
remember.
Ralph Cameron
Independent EMC Consultant and Suppression of consumer
I was approached by an engineer to determine if C37.90.1 , 5kV is still a
valid specification. Can anyone out here tell me more on this
specification, if it is still active, or if it is replaced by -2?
Frank Krozel
Electronic Instrument Associates Central, Inc.
TEL: 630-924-1600
website: http://
The Directive is in effect today and it applies to every type of packaging
including the boxes and pallets we all use. The only reason the Directive
has not been enforced is that there are no standards. CEN has published some
draft standards, but the member states appear to be at an impass on them
Well, looks to me like my suggestion of a quarter-wave stub was right on
target (I'll try not to break my arm patting myself on the back here). You
have the dimensions below. Mount an SMA feedthrough connector on a circular
disk of sheet metal of radius equal to or greater than the stub length,
Scott, Ron,
Is 40 ohms sufficient? Is this recommended strictly for RF or for safety
with a Tempest isolated chamber? What is the leakage current of typical
chamber filters? Of course it will vary depending on whether one has 20 A
filters or 100 A filters and the quantity of filters energize
Assume a business product with a high power LED for use in the EU and that
it operates at 230V. It will be subject to the Low Voltage Directive, so
EN60950 and EN60825-1 would apply. Now assume a similar product but it
operates at 24V. The LVD would not apply in this case. What are the legal
compl
As of 2000?! Ok, supposing that's a hard deadline, is anyone doing
anything about this? What are the acceptable routes to compliance? Is
this a new approach Directive impacting our use of the CE-mark?
Awash in a sea of standards proliferation...
Regards,
Jim Eichner
> Senior Regulatory Compl
Ron,
Usually a quick check with a portable dc ohmeter is good enough. Use a meter
(such as an older analog type) that has a fairly high test current. You want
to see 40 ohms or less to the electrical service ground.
Scott Lacey
> -Original Message-
> From: ron_cher...@densolabs.com [SMTP:
Ken & Group,
The data I have for this antenna are these:
- The board is a Wireless LAN
- The antenna must be omnidirectional
- The output power is 100mW
Thanks in advance for the answers
Best Regards
Muriel
Ken Javor wrote:
>
> I checked out the referenced web site. Not a whole lot of in
Does anyone know of a method of verifying continuity of a ground rod? The
rods are in a concrete floor in a busy lab.
I want to make sure the rods are working and not just for looks!
Ron Chernus, Denso, CA
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Hello List mates,
In a recent issue of the Journal of Laser Applications magazine, there is a
good summary of state and local laser safety regulations. This article
appeared in Volume 11, Number 5 in October 1999 and is titled "State and
local government laser safety requirements". It includes in
I need some clarification regarding marketing of equipment . . .
In the US we cannot market/advertise (or offer for sale) a product which has
not met (or yet been evaluated to) FCC Part 15.
I believe this holds true in the EC as well with regard to the Low-Voltage &
EMC Directives. Can someone
John,
IMHO, since you are the manufacturer, and since "your" compliance label is
still on the device, and assuming they make no "significant" changes to the
product or manual, then your DofC should be the one shipping with the unit.
They need not do a DofC.
Scott
s_doug...@ecrm.com
ECRM Incorpor
MEB is now owned by Schaffner. Schaffner's web site is
MEB still has there own separate web at with lots of GTEM
info.
Tony
Colorado
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Does anyone know, or have a reference that might tell, the ignition temperature
of cotton cheesecloth.
UL 1950, Annex B, Clause B.7.3 references the use of this.
I know that the ignition temperature of paper, according to Ray Bradbury is 451
(superscript: o)F
OO
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This message is comi
We are a medical device manufacturer, our product line consists of
non-invasive (key)pulmonary diagnostic devices (we design and mfg.) and
operates off of PCs, laptops, or handheld computers (along with the other
necessary computing peripherals). Our devices are used in and out of the
"pat
-Original Message-
From: Dick Grobner
Sent: Tuesday, December 07, 1999 9:07 AM
To: 'Richard Lanzillotto'
Cc: 'emc-p...@majordomo.ieee.org'
Subject: RE: NRTL recommendation required
We are a medical device manufacturer, our product line consists of
non-invasive (key)pulmonary d
Ron & EMC-PSTC
Noel Coward the English entertainer breakfasted on champagne and oysters
daily without apparent ill-effects or flying cork damage. I am not aware
if he ever opened a bottle( or an oyster) himself.
When asked about his breakfasting habits by a visiting researcher
Dear Kim,
I certainly know that the European test houses will require all safety
related information such as fuse replacement and rating, type of power cord,
special grounding, etc. to be provided in hard copy and other operational
details is acceptable in the soft copy format such as floppy d
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