-Original Message-
From: plaw...@west.net [mailto:plaw...@west.net]
Sent: Wednesday, December 12, 2001 9:33 AM
To: EMC-PSTC
Subject: Re: Stepping receiver, step sizes.
Are you saying that the results of a 'tuning' style
measurement sequence are
different than a 'stepping' style
...@majordomo.ieee.org
Subject: RE: Stepping receiver, step sizes.
Hello Gary and all,
The point is do an experiment with your Stepping receiver.
Ken
-Original Message-
From: Pettit, Ghery [mailto:ghery.pet...@intel.com]
Sent: Friday, December 07, 2001 8:36 AM
To: 'HALL,KEN (HP
Woodgate';
emc-p...@majordomo.ieee.org
Subject: RE: Stepping receiver, step sizes.
Hello Gary and all,
The point is do an experiment with your Stepping receiver.
Ken
-Original Message-
From: Pettit, Ghery [mailto:ghery.pet...@intel.com]
Sent: Friday, December 07, 2001 8:36 AM
To: 'HALL
,KEN (HP-Roseville,ex1)'; 'John Woodgate';
emc-p...@majordomo.ieee.org
Subject: RE: Stepping receiver, step sizes.
Ken:
Did you do your test by first setting the receiver to the 2950 MHz signal,
and then setting up a symmetrical scan from that reference?
For example, if I used a spectrum analyzer
the measurement error.
--
From: John Woodgate j...@jmwa.demon.co.uk
To: emc-p...@majordomo.ieee.org
Subject: Re: Stepping receiver, step sizes.
Date: Thu, Dec 6, 2001, 4:15 PM
I read in !emc-pstc that Ken Javor ken.ja...@emccompliance.com wrote
(in 20011206195802.LCFL6698.femail7.sdc1
I read in !emc-pstc that Price, Ed ed.pr...@cubic.com wrote (in
b78135310217d511907c0090273f5190d0b...@curly.ds.cubic.com) about
'Stepping receiver, step sizes.', on Fri, 7 Dec 2001:
BTW, my 8571A system uses an 8566B SA, and that analyzer actually uses an
analog swept oscillator. But under
: HALL,KEN (HP-Roseville,ex1) [mailto:ken_h...@hp.com]
Sent: Friday, December 07, 2001 8:09 AM
To: 'John Woodgate'; emc-p...@majordomo.ieee.org
Subject: RE: Stepping receiver, step sizes.
Hello all,
We typically measure in 500 MHz spans, our spectrum analyzer
has 400 bits so
1.25 MHz/bit. Concerned
'; emc-p...@majordomo.ieee.org
Subject: RE: Stepping receiver, step sizes.
Hello all,
We typically measure in 500 MHz spans, our spectrum analyzer has 400 bits so
1.25 MHz/bit. Concerned that we could miss an emission I perfromed the below
experiment, try it:
Injected a 2950 MHz signal into EMI
Subject: RE: Stepping receiver, step sizes.
Hello all,
We typically measure in 500 MHz spans, our spectrum analyzer has 400 bits so
1.25 MHz/bit. Concerned that we could miss an emission I perfromed the below
experiment, try it:
Injected a 2950 MHz signal into EMI Receiver, set for 1MHz RBW
...@majordomo.ieee.org
Subject: Re: Stepping receiver, step sizes.
I read in !emc-pstc that Ken Javor ken.ja...@emccompliance.com wrote
(in 20011206195802.LCFL6698.femail7.sdc1.sfba.home.com@[65.11.150.27])
about 'Stepping receiver, step sizes.', on Thu, 6 Dec 2001:
Keeping the step size to one-half the measurement
I read in !emc-pstc that Ken Javor ken.ja...@emccompliance.com wrote
(in 20011206195802.LCFL6698.femail7.sdc1.sfba.home.com@[65.11.150.27])
about 'Stepping receiver, step sizes.', on Thu, 6 Dec 2001:
Keeping the step size to one-half the measurement bandwidth is an accepted
way of assuring that
Thank you all for those that replied to my question. I found your
suggestions to be exactly what I was looking for!
The emc-pstc, and all who belong continue to be a great resource in the EMC
world!
Regards,
Scott Mee
EMC Engineer
Johnson Controls Inc.
PH: 616.394.2565
EMAIL:
Keeping the step size to one-half the measurement bandwidth is an accepted
way of assuring that all possible signals are captured. Using a step size
equal to a measurement bandwidth is not quite as good but reasonable.
--
From: scott@jci.com
To: emc-p...@majordomo.ieee.org
Subject:
The FCC uses a bandwidth of 1.0 MHz for frequencies above 1.0 GHz, see Part
15, 15.35(b).
I do not believe that there is a stated CISPR bandwidth above a gig.
Bob Heller
3M Product Safety, 76-1-01
St. Paul, MN 55107-1208
Tel: 651- 778-6336
Fax: 651-778-6252
Scott,
An old rule of thumb from way back says that if you are looking for
narrowband signals (defined as narrow with respect to the bandwidth of the
receiver), you should not tune in steps larger than 1/2 of the bandwidth you
are using. Larger steps may result in missing signals. As FCC
I read in !emc-pstc that scott@jci.com wrote (in
of6a8306f3.72fc70aa-on85256b1a.00475...@na.jci.com) about 'Stepping
receiver, step sizes.', on Thu, 6 Dec 2001:
We are performing radiated emissions testing in a semi-anechoic chamber
using an EMI receiver. We plan to cover a high frequency
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