User's Manual

Registration number: W6M21409-14450-C-1

FCC ID: SU7300MCD21V2-CG

Worldwide Testing Services(Taiwan) Co., Ltd Page 8 of 19

2.4 General Test Procedure

POWER LINE CONDUCTED INTERFERENCE: The procedure used was ANSI STANDARD C63.4-

2009 5.2 using a 50µH LISN (if necessary). Both lines were observed. The bandwidth of the spectrum

analyzer was 10 kHz with an appropriate sweep speed.

RADIATION INTERFERENCE: The test procedure used was ANSI STANDARD C63.4-2009 6.4

using a spectrum analyzer. The bandwidth of the spectrum analyzer was 100 kHz with an appropriate

sweep speed. The analyzer was calibrated in dB above a microvolt at the output of the antenna. The

resolution bandwidth was the 100 kHz and the video bandwidth was 300 kHz.

FORMULA OF CONVERSION FACTORS: The Field Strength at 3m was established by adding the

meter reading of the spectrum analyzer (which is set to read in units of dBµV) to the antenna correction

factor supplied by the antenna manufacturer. The antenna correction factors are stated in terms of dB.

Example:

Freq (MHz) METER READING + ACF + CABLE LOSS (to the receiver) = FS

33 20 dBµV + 10.36 dB/m + 6 dB = 36.36 dBµV/m @3m

ANSI STANDARD C63.4-2009 6.3.1 MEASUREMENT PROCEDURES: The EUT was placed on a

table 80 cm high and with dimensions of 1m by 1.5m (non metallic table). The EUT was placed in the

center of the table. The table used for radiated measurements is capable of continuous rotation. The

spectrum was scanned from 30 MHz to 10

harmonic of the fundamental.

Peak readings were taken in three (3) orthogonal planes and the highest readings.

Measurements were made by Worldwide Testing Services(Taiwan) Co., Ltd. at the registered open field

test site located at. The Registration Number: 930600

When an emission was found, the table was rotated to produce the maximum signal strength. At this

point, the antenna was raised and lowered from 1m to 4m. The antenna was placed in both the

horizontal and vertical planes.

ANSI STANDARD C63.4-2009 10.2.7: Any measurements that utilize special test software shall be

indicated and referenced in the test report. During testing, test software ’EZ EMC’ was used for setting

up different operation modes.