Certificate Of Conformity Page 20

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4.3. Radiation Emission Limit (§15.109(a)(g)/CISPR 22, Class B)
FREQUENCY
DISTANCE
FIELD STRENGTHS LIMITS
(MHz)
(Meters)
(dBµV/m)
30 ~ 230
10
30
230 ~ 1000
10
37
Above 1000
3
54.0 (Average)
Above 1000
3
74.0 (Peak)
Note:(1) The tighter limit applies at the edge between two frequency bands.
(2)
Distance refers to the distance in meters between the measuring instrument
antenna and the closed point of any part of the E.U.T.
(3)
There is no over 1GHz limits in CISPR 22 standard. Therefore, a FCC limit
is used based on CFR 47 Part 15.35 (b) and Part 15.109 (g).
4.4. Operating Condition of EUT
Same as conducted measurement which is listed in 3.4. except the test set up replaced
by section 4.2.
4.5. Test Procedure
4.5.1. For Frequency Range was 30MHz-1000MHz which measurement distance was
10m at Open Area Test Site:
The EUT and its simulators were placed on a turn table which was 0.8 meter
above the ground. The turn table rotated 360 degrees to determine the position
of the maximum emission level. EUT was set 3 meters at open area test site
away from the receiving antenna which was mounted on an antenna tower. The
antenna could be moved up and down between 1 to 4 meters to find out the
maximum emission level. Broadband antenna (calibrated Bilog antenna) was
used as a receiving antenna. Both horizontal and vertical polarization of the
antenna were set on measurement. In order to find the maximum emission, all
of the interface cables were manipulated according to ANSI C63.4-2003 on
radiated measurement
The bandwidth of the R&S Test Receiver ESCI was set at 120kHz.
The frequency range from 30MHz to 1000MHz was pre-scanned with a peak
detector and all final readings from test receiver were measured with Quasi-Peak
detector.
Version:1.0
AUDIX Technology Corporation Report No.: EM-F980888

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