The FDA not withstanding, any determined nimrod with a credit card
and the here-hold-my-beer mentality can purchase a potentially
harmful laser online (class IV).
But a gallon of gasoline or a pound of gunpowder in the hands of a
teenaged kid thinking he's going to make a Molotov cocktail or
Ralph,
ANSI C63.4 also has the procedure: Section 4.1.2 and Annex E.
In short, it's a verification of the LISN impedance and insertion loss
characteristics. Typically this requires a network analyzer to perform the
verification.
Also, if you use AC line filters on the line side of the
Ed,
I agree, and I've verified that with the LISN(s) I use there is no
impact; however, ANSI C63.4, E1, b) states that unless it can be
shown that the RF filters do not impact the impedance then you must
perform the verification with the RF filters in circuit.
Really it's a case for either
conditions?
Ed Price
ed.pr...@cubic.com WB6WSN
NARTE Certified EMC Engineer
Electromagnetic Compatibility Lab
Cubic Defense Applications
San Diego, CA USA
858-505-2780
Military Avionics EMC Is Our Specialty
-Original Message-
From: Spencer, David H [mailto:david.spen...@xerox.com
Chris,
I've built several CDN's. Repaired both CDN's and LISN's. Never messed with
building an EM clamp. Too much hassle IMO.
As far as calibration, I try to calibrate as much as is practical in house.
All the LISN's, ISN's, CDN's, cable loss, amplifier performance, etc etc .
But in
-01
St. Paul, MN 55107-1208
Tel: 651- 778-6336
Fax: 651-778-6252
==
Spencer, David
H
David.Spencer@xe
To
rox.com cmander...@micron.com
Sent
All,
I'm fishing for some comments and/or recommendations regarding configuring our
test site to measure radiated emissions above 1GHz per EN55022:2006 +A1:2007.
My question isn't really the base requirements of the standards so much as how
to implement it in our test site.
For radiated
Brian,
Most of the immunity standards allow the manufacture to state some lesser
performance criteria when the product doesn't meet the requirements. In most
cases a test lab can't dictate product performance and specifications. Only
note the results in a test report.
IMO,
One way of
Regards all,
Is anyone aware when the A1:2007 amendment of EN55022:2006 will be listed in
the Official Journal? Or is it already, and I missed it.
Thanks,
David Spencer
EMC Engineer
Xerox Corp
- This
message is from the
Ralph,
IEC 61000-3-5 is an older technical report giving direction for making
flicker measurement on products greater than 16A.
Whereas IEC/EN 61000-3-11 is a current standard and is a requirement
(for the EU market place) for products rated greater than 16A.
Regards,
David Spencer
EMC
Howdy All,
I was curious if anyone out there has place a separately certified MOV
from Line (or Neutral) to Earth as a solution for Surge and placement in the
EU.
The specific application is a pluggable Type B.
The OSM/EE Note 1.5.1 98/2 indicates that for Pluggable Type B (and
permanently
-
From: John Woodgate [mailto:j...@jmwa.demon.co.uk]
Sent: Wednesday, October 30, 2002 3:07 PM
To: emc-p...@majordomo.ieee.org
Subject: EN61000-3-3 -3-11 off topic a bit!
I read in !emc-pstc that Spencer, David H david.spen...@usa.xerox.com
wrote (in 052106A55179D611B34300096BB02E3F8B93@USAMCMS4
-pstc that Spencer, David H david.spen...@usa.xerox.com
wrote (in 052106A55179D611B34300096BB02E3F8B1D@USAMCMS4) about
'Measuring AC Line Impedance' on Thu, 19 Sep 2002:
Is anyone familiar with a method to measure and calculate those values.
The
generic values I have for short circuit condition
Having looked into EN61000-3-11, there is a big difference from EN61000-3-3.
The scope of 3-3 refers to products rated 16 amps or less per phase.
There is no per phase specification in EN61000-3-11. Only this in the
title: equipment with rated current 75 A. Further, the scope does not
specify
I'm trying to characterize the 50Hz AC line impedance of my facility, for
comparison to the values specified in IEC61000-3-3. I've come across
generic short circuit values for the Resistive and Inductive components.
However, I need to determine exactly what these values are ideally through a
I would guess the answer is b) 5x the 12GHz transmitter.
I think (going from memory) ANSI C63.4 gives test instructions for
receivers.
The Local Oscillator or the receiver must be active, i.e. receiving a real
signal (alternately you can inject a test signal into the receiver). Thus
making
Using the following references: IEC 61000-4-5:1995 and EN55024:1998.
I have to test a piece of ITE equipment which has an receive antenna (the
antenna is connected to the EUT using 50 ohm coaxial cable). Is the EUT's
antenna cable subject to surge test per table 2 of EN55024?
Note 2 specifies
Howdy all,
I hate to ask this loaded question. But, I must.
For accredited EMC labs how are you addressing uncertainty?
I've read NIS 81, NIST TN 1297, a few papers published in the IEEE Symposium
Notes, and my Statistics text book.
My basic question, is there an easy, step-by-step method
All,
I have a question regarding a horizontal transmit antenna over a ground
plane. My questions implies a dipole.
The questions:
What impact does the ground plane have on a horizontally transmitted signal?
If the transmit antenna is 1 meter above the ground plane is the only
signal
Looking for a list of standards that apply to EMC on medical devices and the
markets which they apply ( EU, US, and Asia Pacific).
Thanks
Regards,
David Spencer
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc
I know this is a rehash of a topic from six months ago.. Sorry.
I would like to find a break down of the requirements for MOV's ( this is
only in AC mains applications)
1) By country (EU countries primarily.. But Globally is good info too.)
2) What safety markings ( on the device) are
21 matches
Mail list logo
