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.Mee@jci.c
om To: emc-p...@majordomo.ieee.org
cc: (bcc: Robert E.
Heller/US-Corporate/3M/US)
12/06/2001 Subject: Stepping receiver, step
sizes.
07:17 AM
Please respond
to Scott.Mee
Hello Group!
I would like to ask a question regarding EMI Receiver step sizes in the
higher frequency range.
We are performing radiated emissions testing in a semi-anechoic chamber
using an EMI receiver. We plan to cover a high frequency range between 1
and 5 GHz (a large spanse to cover!). I would like to know what practical
step size (ie. 8kHz or 20kHz or 80kHz) I could choose for such a wide
range and keep:
1. The data accurate, meaning that I wouldn't be "missing" or
stepping around energy by taking to large of a step.
2. Keep the amount of data I'm collecting to a reasonable amount so
that I may process it (apply correction factors for antenna, cable loss,
pre-amplifier).
My question comes up primarily because I haven't found any specifications
that require things like minimum scan time, maximum step size, or the like.
Is anyone aware of a specification out there that covers this, or have any
information/personal experience that could help me make a determination?
Thanks for any help in advance!
Regards,
Scott Mee
EMC Engineer
Johnson Controls Inc.
PH: 616.394.2565
EMAIL: scott....@jci.com
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