March 2015 15:02
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Quasi Peak - Length of Measurement Time for Final Spot
Measurement?
Dear group,
When measuring emissions using a Quasi Peak detector are there any
regulations or guidance concerning the amount of time one should dwell
Thank you to everyone who responded and clarified the issue, it is much
appreciated.
Regards,
James
From: Pawson, James
Sent: 26 March 2015 15:02
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Quasi Peak - Length of Measurement Time for Final Spot
Measurement?
Dear group,
When measuring
: Re: [PSES] Quasi Peak - Length of Measurement Time for Final Spot
Measurement?
James,
Since you are aware of it, you need to make sure you capture the max reading.
Rob Oglesbee
Radian Research
(765) 449-5505
This message, and any attachments to it, may contain information
San Jose, CA 95119-1003
ravinder.ajm...@hgst.commailto:ravinder.ajm...@hgst.com
From: dward [mailto:dw...@pctestlab.com]
Sent: Thursday, March 26, 2015 9:11 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Quasi Peak - Length of Measurement Time for Final Spot
Measurement?
Yes, worst case
In message
99532047d6a52847ab271f822ae9efdc0177713...@cktexmb01.cds.int, dated
Thu, 26 Mar 2015, Paasche, Dieter dieter.paas...@christiedigital.com
writes:
with the
exception of any brief isolated high reading, which shall be ignored
Too vague. Bad standard! Go to the naughty step.
--
OOO
...@echostar.com]
Sent: Thursday, March 26, 2015 11:02 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Quasi Peak - Length of Measurement Time for Final Spot
Measurement?
Dear group,
When measuring emissions using a Quasi Peak detector are there any regulations
or guidance concerning the amount
Dear group,
When measuring emissions using a Quasi Peak detector are there any regulations
or guidance concerning the amount of time one should dwell on a single
frequency for a measurement?
I know it depends on the nature of the signal. In this case, the signal of
interest results in a burst
In message
cec6039c09630543852b1a8cfa0a0c790e0a3...@stwpiexc03.sats.corp, dated
Thu, 26 Mar 2015, Pawson, James james.paw...@echostar.com writes:
When measuring emissions using a Quasi Peak detector are there any
regulations or guidance concerning the amount of time one should dwell
on a
and delete the message and any attachments. Thank you.
From: Pawson, James [mailto:james.paw...@echostar.com]
Sent: Thursday, March 26, 2015 11:02 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Quasi Peak - Length of Measurement Time for Final Spot
Measurement?
Dear group,
When
Performing troubleshoot testing to CISPR type radiated emissions
requirements without a quasi-peak detector. Seeing results of bus traffic
on an Ethernet cable. Squeezing down to zero-span mode and adjusting sweep
speed, a roughly 500 us 50% duty cycle waveform is observed.
Is it accurate to
To:
EMC-PSTC@LISTSERV.IEEE.ORG,
Date:
11/27/2012 12:58 PM
Subject:
[PSES] Quasi-peak detector
Performing troubleshoot testing to CISPR type radiated emissions
requirements without a quasi-peak detector. Seeing results of bus traffic
on an Ethernet cable. Squeezing down to zero-span mode
2 kHz?
If really fast edge rates then the harmonics would appear.
Pick two adjacent ones in the measuring range and measure the delta freq
between them.
That is the fundamental.
Plug into the ethernet ISN for conducted measurements and check for the same.
Me thinks something else is going
Sure this isn't power over Ethernet power supply?
Sent from my iPad
On Nov 27, 2012, at 14:55, Ken Javor ken.ja...@emccompliance.com wrote:
Performing troubleshoot testing to CISPR type radiated emissions requirements
without a quasi-peak detector. Seeing results of bus traffic on an
The relief is related to Pulse Repetition Frequency.
Once the PRF is greater than 100 Hz = no relief, only aspirin will do.
Mike Violette
Washington Laboratories American Certification Body
mi...@wll.com
+1 240 401 1388
On Nov 27, 2012, at 6:44 PM, Derek Walton wrote:
Sure this isn't
: [PSES] Quasi-peak
Actually there are FIVE:
YES
NO
MAYBE
DON'T KNOW
DON'T CARE
John Shinn, Ph.D., PE
-Original Message-
From: Sundstrom, Michael
Sent: Thursday, December 01, 2011 10:55 AM
To: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] Quasi-peak
Richard Schultz (of ANSI
| Schneider Electric | Renewable Energies Business |
CANADA | Regulatory Compliance Engineering
From:
John Woodgate j...@jmwa.demon.co.uk
To:
EMC-PSTC@LISTSERV.IEEE.ORG
Date:
12/02/2011 12:36 AM
Subject:
Re: [PSES] Quasi-peak
In message A7C32E638E804E6CA1B9E8454809B594@JohnHP, dated
Lab
Cubic Defense Applications
San Diego, CA USA
858-505-2780
Military Avionics EMC Is Our Specialty
-Original Message-
From: John Woodgate [mailto:j...@jmwa.demon.co.uk]
Sent: Friday, December 02, 2011 12:32 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Quasi
In message 1322714376.48125.yahoomail...@web39604.mail.mud.yahoo.com,
dated Wed, 30 Nov 2011, Bill Owsley wdows...@yahoo.com writes:
Digital is a very narrow-band transmission and this spread spectrum, or
FM signal seldom hits the receive freq
That's a bit surprising.
--
OOO - Own Opinions
Amund,
A little work on Google(tm) finds many entries for the QP time constants.
Here are URL's for two:
Short form, a one page history by Ed Bronaugh:
http://www.ieee.org/organizations/pubs/newsletters/emcs/summer01/pp.bronaugh.htm
Time constants employed:
|
|
|- - - - - - - - - -- Limit
||~~~|
|/\
|||
+
Hope this helps with spread spectrum clocks.
- Original Message -
From: Amund Westin
Sent: 11/30/11 07:11 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Quasi-peak
I tried to find some information on how
@LISTSERV.IEEE.ORG EMC-PSTC@LISTSERV.IEEE.ORG
Date: 12/01/2011 06:25 AM
Subject:RE: [PSES] Quasi-peak
Sent by:emc-p...@ieee.org
It should be noted that quasi-peak is only specified up to 1 GHz. For
emissions above 1 GHz, peak and average limits are defined and both must
be met using
[mailto:ton...@europe.com]
Sent: Thursday, December 01, 2011 2:36 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Quasi-peak
Hello Amund,
Just to clarify one point, a spread spectrum clock is very different to a
spread spectrum transmission scheme.
Bluetooth is just one example
to
the full amplitude of the signal.
Donald Borowski
EMC Compliance Engineer
Schweitzer Engineering Labs
Pullman, WA, USA
From: Price, Edward ed.pr...@cubic.com
To: don_borow...@selinc.com, EMC-PSTC@LISTSERV.IEEE.ORG
Date: 12/01/2011 08:06 AM
Subject:RE: [PSES] Quasi-peak
Don:
I
01, 2011 7:22 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Quasi-peak
Spread spectrum clocks work due to the measurement bandwidth of the
receiver, so this effect holds for peak, quasi-peak, and average.
Donald Borowski
Schweitzer Engineering Labs
Pullman, Washington
.
Brian
-Original Message-
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org]On Behalf Of
don_borow...@selinc.com
Sent: Thursday, December 01, 2011 8:58 AM
To: Price, Edward
Cc: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] Quasi-peak
Ed-
Given your scenario, you are right. However
Van: emc-p...@ieee.org [mailto:emc-p...@ieee.org] Namens Price, Edward
Verzonden: donderdag 1 december 2011 16:45
Aan: Anthony Thomson; EMC-PSTC@LISTSERV.IEEE.ORG
Onderwerp: RE: [PSES] Quasi-peak
Tony:
I don’t want to appear to be overly picky, but your diagrams don’t show “what
...@tamuracorp.com
To: EMC-PSTC@LISTSERV.IEEE.ORG
Sent: Thursday, December 1, 2011 12:22 PM
Subject: RE: [PSES] Quasi-peak
Good stuff, this empirical experience.
But the question remains - does this spread-spectrum stuff, for a
comparative power level, increase or decrease interference with my
-PSTC@LISTSERV.IEEE.ORG
Date: 12/01/2011 09:25 AM
Subject:RE: [PSES] Quasi-peak
Sent by:emc-p...@ieee.org
Good stuff, this empirical experience.
But the question remains - does this spread-spectrum stuff, for a
comparative power level, increase or decrease interference with my
In message 2b83256001484461b5f6adf4c41df...@tamuracorp.com, dated Thu,
1 Dec 2011, Brian Oconnell oconne...@tamuracorp.com writes:
But the question remains - does this spread-spectrum stuff, for a
comparative power level, increase or decrease interference with my
master-blaster 5000 remote
, 2011 12:22 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Quasi-peak
In message 2b83256001484461b5f6adf4c41df...@tamuracorp.com, dated Thu,
1 Dec 2011, Brian Oconnell oconne...@tamuracorp.com writes:
But the question remains - does this spread-spectrum stuff, for a
comparative power
Todd Hubing would add one more - It depends.
Ghery S. Pettit
-Original Message-
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Sundstrom,
Michael
Sent: Thursday, December 01, 2011 10:56 AM
To: John Woodgate; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] Quasi-peak
Well, he might, maybe not
-Original Message-
From: Pettit, Ghery [mailto:ghery.pet...@intel.com]
Sent: Thursday, December 01, 2011 11:19 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Quasi-peak
Todd Hubing would add one more - It depends.
Ghery S. Pettit
-Original Message
In message
1abb0f6ff6cb7545adad042f566d5f4449101...@sv-mailbox01.ohdc.com, dated
Thu, 1 Dec 2011, Sundstrom, Michael
michael_sundst...@overheaddoor.com writes:
Richard Schultz (of ANSI C63) always told me there were 3 answer to any
EMC question asking about 'if' it will affect something?
] Quasi-peak
In message
1abb0f6ff6cb7545adad042f566d5f4449101...@sv-mailbox01.ohdc.com,
dated
Thu, 1 Dec 2011, Sundstrom, Michael
michael_sundst...@overheaddoor.com writes:
Richard Schultz (of ANSI C63) always told me there were 3 answer to
any
EMC question asking about 'if' it will affect
Specialty
-Original Message-
From: Brian Oconnell [mailto:oconne...@tamuracorp.com]
Sent: Thursday, December 01, 2011 9:22 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Quasi-peak
Good stuff, this empirical experience.
But the question remains - does this spread
:
Price, Edward ed.pr...@cubic.com
To:
EMC-PSTC@LISTSERV.IEEE.ORG
Date:
12/01/2011 12:00 PM
Subject:
Re: [PSES] Quasi-peak
Brian:
Wow, you want a practical answer!!
Well, in my experience of doing susceptibility on a lot of military
systems (where the comm links are almost always encrypted
From:
ce-test, qualified testing bv - Gert Gremmen g.grem...@cetest.nl
To:
EMC-PSTC@LISTSERV.IEEE.ORG
Date:
12/01/2011 09:58 AM
Subject:
Re: [PSES] Quasi-peak
The QP detector has 2 tasks:
1. Mimic the response of a standard AM receiver IF band filter (4
kHz or so) to short impulses
Actually there are FIVE:
YES
NO
MAYBE
DON'T KNOW
DON'T CARE
John Shinn, Ph.D., PE
-Original Message-
From: Sundstrom, Michael
Sent: Thursday, December 01, 2011 10:55 AM
To: John Woodgate ; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] Quasi-peak
Richard Schultz (of ANSI C63) always
-505-2780
Military Avionics EMC Is Our Specialty
-Original Message-
From: John Shinn [mailto:jmsh...@pacbell.net]
Sent: Thursday, December 01, 2011 4:56 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Quasi-peak
Actually there are FIVE:
YES
NO
MAYBE
I tried to find some information on how the Quasi-Peak detetor works.
How long time does it measure at each frequency, why does a spread spectrum
clock solve emission problem, etc
Anybody who knows where I can find it?
B.r
Amund
-
Defense Applications
San Diego, CA USA
858-505-2780
Military Avionics EMC Is Our Specialty
-Original Message-
From: Amund Westin [mailto:am...@westin-emission.no]
Sent: Wednesday, November 30, 2011 11:11 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Quasi-peak
I tried
interference, the limit will stay.
From: Price, Edward ed.pr...@cubic.com
To: Amund Westin am...@westin-emission.no; EMC-PSTC@LISTSERV.IEEE.ORG
Sent: Wednesday, November 30, 2011 11:17 PM
Subject: RE: [PSES] Quasi-peak
Amund:
Start by looking at Ed Bronaugh’s
From: Price, Edward ed.pr...@cubic.com
Date: Wed, 30 Nov 2011 20:17:00 -0800
To: Amund Westin am...@westin-emission.no, EMC-PSTC@LISTSERV.IEEE.ORG
Conversation: [PSES] Quasi-peak
Subject: RE: [PSES] Quasi-peak
Amund:
Start by looking at Ed Bronaugh¹s paper:
http://www.ieee.org/organizations/pubs
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