Goto Section: 15.205 | 15.209 | Table of Contents
FCC 15.207
Revised as of October 1, 2006
Goto Year:2005 |
2007
Sec. 15.207 Conducted limits.
(a) Except as shown in paragraphs (b) and (c) of this section, for an
intentional radiator that is designed to be connected to the public utility
(AC) power line, the radio frequency voltage that is conducted back onto the
AC power line on any frequency or frequencies, within the band 150 kHz to 30
MHz, shall not exceed the limits in the following table, as measured using a
50 μH/50 ohms line impedance stabilization network (LISN). Compliance with
the provisions of this paragraph shall be based on the measurement of the
radio frequency voltage between each power line and ground at the power
terminal. The lower limit applies at the boundary between the frequency
ranges.
------------------------------------------------------------------------
Conducted limit (dBmV)
Frequency of emission (MHz) ----------------------------------------
Quasi-peak Average
------------------------------------------------------------------------
0.15-0.5....................... 66 to 56*.......... 56 to 46*
0.5-5.......................... 56................. 46
5-30........................... 60................. 50
------------------------------------------------------------------------
*Decreases with the logarithm of the frequency.
(b) The limit shown in paragraph (a) of this section shall not apply to
carrier current systems operating as intentional radiators on frequencies
below 30 MHz. In lieu thereof, these carrier current systems shall be
subject to the following standards:
(1) For carrier current system containing their fundamental emission within
the frequency band 535–1705 kHz and intended to be received using a standard
AM broadcast receiver: no limit on conducted emissions.
(2) For all other carrier current systems: 1000 μV within the frequency band
535–1705 kHz, as measured using a 50 μH/50 ohms LISN.
(3) Carrier current systems operating below 30 MHz are also subject to the
radiated emission limits in Sec. 15.205, Sec. 15.209, Sec. 15.221, Sec. 15.223, or Sec. 15.227,
as appropriate.
(c) Measurements to demonstrate compliance with the conducted limits are not
required for devices which only employ battery power for operation and which
do not operate from the AC power lines or contain provisions for operation
while connected to the AC power lines. Devices that include, or make
provisions for, the use of battery chargers which permit operating while
charging, AC adapters or battery eliminators or that connect to the AC power
lines indirectly, obtainig their power through another device which is
connected to the AC power lines, shall be tested to demonstrate compliance
with the conducted limits.
[ 54 FR 17714 , Apr. 25, 1989, as amended at 56 FR 373 , Jan. 4, 1991; 57 FR 33448 , July 29, 1992; 58 FR 51249 , Oct. 1, 1993; 67 FR 45671 , July 10, 2002]
Goto Section: 15.205 | 15.209
Goto Year: 2005 |
2007
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