And somewhere near section 109 it says that if you use the radiated limits
and process you need to do so for the conducted as well - that means testing
down to 150Khz rather than just 450Khz
Gary
-----Original Message-----
From: Pettit, Ghery [mailto:[email protected]]
Sent: Monday, March 25, 2002 9:50 AM
To: '[email protected]'; [email protected]
Subject: RE: FCC part 15 section 109
Kristiaan,
The test procedures of ANSI C63.4-2000 must be used, even when testing to the
limits in CISPR 22. The 10 meter test distance is fine, but to the extent that
the test methods differ, ANSI C63.4 must be followed. Don't forget that if the
product has a clock higher than 108 MHz, testing above 1 GHz will be required
to the FCC limits. The upper frequency will depend upon the actual maximum
clock speed in the product.
Ghery Pettit
Intel
-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Monday, March 25, 2002 8:41 AM
To: [email protected]
Subject: FCC part 15 section 109
Hello group,
Part 15, section 109, states that as an alternative to the radiated emission
limits shown in paragraphs (a) and (b) of this section, digital devices may be
shown to comply with CISPR22 3rd ed. Further-on is stated that the testmethods
of part 15 (referring to ANSI C63.4) apply.
Question:
If a lab performs Part 15 measurements for Class B devices below 1000MHz
according to CISPR22:1997 with
- the limits of CISPR22
- the procedures of CISPR22
- at a 10 meter distance as per CISPR22,
Are these measurements performed in an correct way?
Regards,
Kris Carpentier
