ETC Report No. : 16-09-RBF-027
Sheet 26
of 36 Sheets
FCC ID:
2AC96WDP
26
7 BAND EDGES MEASUREMENT
7.1 Standard Applicable
According to 15.249(d), out band emission except for harmonics shall be comply with
§15.209 or at least attenuated by 50 dB below the level of the fundamental.
7.2 Measurement Procedure
A) 50 dB attenuation method
1. Check the calibration of the measuring instrument using either an internal calibrator or a
known signal from an external generator.
2. Position the EUT as shown in figure 4 without connection to measurement instrument.
Turn on the EUT and connect its antenna terminal to measurement instrument via a low
loss cable. Then set it to any one measured frequency within its operating range and
make sure the instrument is operated in its linear range.
3. Measure the highest amplitude appearing on spectral display and set it as a reference
level. Plot the graph with marking the highest point and edge frequency.
4. Repeat above procedures until all measured frequencies were complete.
B) Radiated Emission method
1. Following the measurement procedures in section 4.2 with the EUT set to any one
measured frequency within its operating range and make sure the instrument is operated
in its linear range.
2. Measure the highest amplitude appearing on spectral displayed.
3. Repeat above procedures until all measured frequencies were complete.
Measuring instrument setup in measured frequency band when specified detector function
is used :
Frequency Band
(MHz)
Instrument
Function
Resolution
bandwidth
Video
Bandwidth
30 to 1000
RF Test Receiver
Quasi-Peak
120 kHz
N/A
Spectrum Analyzer
Peak
100 kHz
100 kHz
Above 1000
Spectrum Analyzer
Peak
1 MHz
1 MHz
Spectrum Analyzer
Average
1 MHz
10 Hz or
≥ 1/T
(Note 1)
