] *On Behalf Of
*Pettit, Ghery
*Sent:* Wednesday, July 30, 2008 2:06 PM
*To:* Rudd, Adam; emcp...@aol.com; emc-p...@ieee.org
*Subject:* RE: Class A antenna distance
Note that the allowance for shorter measurement distances in CISPR 22
is for small devices, too. And, as noted, is limited
In message
of61e94bfa.fb76a93e-on88257497.00594c69-88257497.005a9...@slpower.com,
dated Thu, 31 Jul 2008, pat.law...@slpower.com writes:
Is it practical to get corresponding measurements in a 3m semi-anechoic
chamber, let alone a fully-anechoic chamber?
This is an elephant in the EMC room
; emc-p...@ieee.org
*Subject:* RE: Class A antenna distance
Note that the allowance for shorter measurement distances in CISPR
22
is for small devices, too. And, as noted, is limited to Class B
devices. Plus, some regulators do not allow this option
Greetings John,
What is the possibility to have CISPR accept 3m measurement distance,
unconditionally, for Class B devices? I feel 3m is more realistic in the
residential environment. I argue with (friendly) BSMI (Taiwan's authority).
The BSMI regulator tells me if CISPR accepts 3m
In message
2a93eb060807311215h30f89a09r2c23483501c76...@mail.gmail.com, dated
Thu, 31 Jul 2008, Grace Lin graceli...@gmail.com writes:
What is the possibility to have CISPR accept 3m measurement distance,
I don't know. Maybe Ghery could comment?
unconditionally, for Class B devices? I
...@ieee.org
Subject: RE: Class A antenna distance
Note that the allowance for shorter measurement distances in CISPR 22
is for
small devices, too. And, as noted, is limited to Class B devices. Plus, some
regulators do not allow this option to be used and insist on 10
this standard could be published is
2010.
Ghery S. Pettit
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of John Woodgate
Sent: Thursday, July 31, 2008 12:59 PM
To: emc-p...@ieee.org
Subject: Re: Class A antenna distance
In message
2a93eb060807311215h30f89a09r2c23483501c76
47CFR 15.31(f)(1) allows measurements at distances other than specified and
details the extrapolation factor.
http://edocket.access.gpo.gov/cfr_2007/octqtr/47cfr15.31.htm
EN 55022 Section 10.2.1 has a note that specifically makes an allowance for
Class B devices to be measured at 3m. I tend
: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Rudd, Adam
Sent: Wednesday, July 30, 2008 11:59 AM
To: emcp...@aol.com; emc-p...@ieee.org
Subject: RE: Class A antenna distance
47CFR 15.31(f)(1) allows measurements at distances other than specified and
details the extrapolation factor
...@ieee.org
Subject: RE: Class A antenna distance
Note that the allowance for shorter measurement distances in CISPR 22 is for
small devices, too. And, as noted, is limited to Class B devices. Plus, some
regulators do not allow this option to be used and insist on 10 meter data.
Ghery
[mailto:emc-p...@ieee.org] *On Behalf Of
*Pettit, Ghery
*Sent:* Wednesday, July 30, 2008 2:06 PM
*To:* Rudd, Adam; emcp...@aol.com; emc-p...@ieee.org
*Subject:* RE: Class A antenna distance
Note that the allowance for shorter measurement distances in CISPR 22
is for small devices, too
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