Rod,
I think you will have to make sure your tests (to Class A)
comply with the FCC Part 15 test setup (which differs
somewhat from CISPR-22 -- see ANSI C63.4) and also include
tests above 1 GHz if the equipment has clocks of 108 MHz or
higher (including multiplied clocks as in 133, 166 MHz
processors, etc.). Merely having a 115 VAC power supply is
not the trigger between Class A and B as 115 volts is
standard for medium and low power electrical circuits in
this country. The determining factor if you need Class B
certification is whether your product is targeted into the
residential market. One exception to this may be if you have
a laptop computer, which is, I believe, automatically
considered to be marketed to consumers.
Cheers,
Cortland
Disclaimer: The opinions expressed in this message are my
own and do not necessarily reflect the opinions of my
employer.
______________________________ Reply Separator _________________________________
Subject: EMI Compliance - Need to Re-Test
Author: [email protected] at internet
List-Post: [email protected]
Date: 8/29/96 20:31
Hello all,
We have a product for non-residential use that is powered by a line
frequency a.c. power pack. With a 230 V a.c. power pack, the product has
been tested by a NATA accredited laboratory and meets EN55022: 1995 Class
A.
If we source a UL approved 115 V a.c. power pack, is it necessary to have
the product re-tested for EMI with the new power pack for sale in the USA?
Thanks in advance.
====================================================
Rod Mason Tel: 61-3-9727-9261 (GMT +10 Hrs)
Principal Engineer Fax: 61-3-9727-4021
Datacraft Technologies
252-254 Maroondah Highway,
Mooroolbark, Victoria 3138.
AUSTRALIA
