Hello EMC gurus,
I am new to the group and very GREEN when it comes to
EMC and compliance issues. Please be patient.
We are currently attempting to self-certify some our products
(dataloggers and peripherals) for CE compliance. The RF chamber
being used is 8'x8'x10'. No real characterizing of chamber has been
performed. Emissions measurements (EN55022Class B) are done
in the following manner:
* Product is configured worst case and several measurements are
made at 1 meter.
*A distance factor is added in to determine the limit at 10 meters
and anything within 6dB of the limit is considered suspect.
A couple of questions:
1) Is it likely that we are missing potential emission problems with
a 1 meter measurement? Will a 3,10 meter measurement reveal
something a 1 meter will not?
2) Would a 1 meter measurement be acceptable put into a
position to show compliance?
3) If unacceptable, would characterizing the chamber using a
Radiated Emission Source to figure in site errors and take them
into account when making the measurement provide a better
argument?
4) Does the same hold true for RF susceptibility in the described
environment?
Thanks in advance,
Greg Beveridge
Compliance Test Technician
Campbell Scientific, Inc.
Logan, UT 84321
(435)750-9656
[email protected]
---------
This message is coming from the emc-pstc discussion list.
To cancel your subscription, send mail to [email protected]
with the single line: "unsubscribe emc-pstc" (without the
quotes). For help, send mail to [email protected],
[email protected], [email protected], or
[email protected] (the list administrators).
