TEST REPORT

REPORT REVISE RECORD

1 TEST SUMMARY

2 GENERAL INFORMATION

3 GENERAL DESCRIPTION OF E.U.T.

4 TEST ENVIRONMENT

5 TEST MODE

6 MEASUREMENT UNCERTAINTY

7 DESCRIPTION OF SUPPORT UNIT

8 LABORATORY LOCATION

All tests were performed at:
BlueAsia of Technical Services(Shenzhen) Co.,Ltd.
Building C, No. 107, Shihuan Road, Shiyan Sub-District, Baoan District, Shenzhen, Guangdong Province, China
Telephone: TEL: +86-755-28682673 FAX: +86-755-28682673
No tests were sub-contracted.

9 TEST INSTRUMENTS LIST

Test Equipment Of Radiated Spurious Emissions

Test Equipment Of Conducted Emissions at AC Power Line (150kHz-30MHz)

Test Equipment Of RF Conducted Test

10 ANTENNA REQUIREMENT

10.1 CONCLUSION

Standard Requirement: An intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. The use of a antenna that uses a unique coupling to the intentional radiator, the manufacturer may design the unit permanently attached antenna or of an so that a broken antenna can be replaced by the user, but the use of a standard antenna jack or electrical connector is prohibited.

EUT Antenna: The antenna is integrated on the main PCB and no consideration of replacement. The best case gain of the antenna is 3dBi.

[Image Description: Printed circuit board with components, labeled 'ANT', '+5V', '-5V', and dated '2022-12-17'.]

11 CONDUCTED SPURIOUS EMISSIONS

11.1 LIMITS

Limit: In any 100 kHz bandwidth outside the frequency band in which the spread spectrum or digitally modulated intentional radiator is operating, the radio frequency power that is produced by the intentional radiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired power, based on either an RF conducted or a radiated measurement, provided the transmitter demonstrates compliance with the peak conducted power limits. If the transmitter complies with the conducted power limits based on the use of RMS averaging over a time interval, as permitted under paragraph (b)(3) of this section, the attenuation required under this paragraph shall be 30 dB instead of 20 dB. Attenuation below the general limits specified in §15.209(a) is not required. In addition, radiated emissions which fall in the restricted bands, as defined in §15.205(a), must also comply with the radiated emission limits specified in §15.209(a) (see §15.205(c)).

11.2 BLOCK DIAGRAM OF TEST SETUP

[Diagram Description: A schematic showing the Equipment Under Test (EUT) connected to test equipment, likely for measuring conducted emissions.]

11.3 TEST DATA

Pass: Please Refer To Appendix: Appendix1 For Details

12 RADIATED SPURIOUS EMISSIONS

12.1 LIMITS

Remark: The emission limits shown in the above table are based on measurements employing a CISPR quasi-peak detector except for the frequency bands 9-90kHz, 110-490kHz and above 1000 MHz. Radiated emission limits in these three bands are based on measurements employing an average detector, the peak field strength of any emission shall not exceed the maximum permitted average limits specified above by more than 20 dB under any condition of modulation.

12.2 BLOCK DIAGRAM OF TEST SETUP

[Diagram Description: Multiple diagrams showing the radiated emissions test setup. These include a 3m or 10m semi-anechoic chamber setup with a turntable for the EUT, and a 3m fully-anechoic chamber setup. The diagrams illustrate the positioning of the EUT, turntable, test antenna, and receiver/preamplifier.]

12.3 PROCEDURE

a. For below 1GHz, the EUT was placed on the top of a rotating table 0.8 meters above the ground at a 3 or 10 meter semi-anechoic chamber. The table was rotated 360 degrees to determine the position of the highest radiation.
b. For above 1GHz, the EUT was placed on the top of a rotating table 1.5 meters above the ground at a 3 meter fully-anechoic chamber. The table was rotated 360 degrees to determine the position of the highest radiation.
c. The EUT was set 3 or 10 meters away from the interference-receiving antenna, which was mounted on the top of a variable-height antenna tower.
d. The antenna height is varied from one meter to four meters above the ground to determine the maximum value of the field strength. Both horizontal and vertical polarizations of the antenna are set to make the measurement.
e. For each suspected emission, the EUT was arranged to its worst case and then the antenna was tuned to heights from 1 meter to 4 meters (for the test frequency of below 30MHz, the antenna was tuned to heights 1 meter) and the rotatable table was turned from 0 degrees to 360 degrees to find the maximum reading.
f. The test-receiver system was set to Peak Detect Function and Specified Bandwidth with Maximum Hold Mode.
g. If the emission level of the EUT in peak mode was 10dB lower than the limit specified, then testing could be stopped and the peak values of the EUT would be reported. Otherwise the emissions that did not have 10dB margin would be re-tested one by one using peak, quasi-peak or average method as specified and then reported in a data sheet.
h. Test the EUT in the lowest channel, the middle channel, the Highest channel.
i. The radiation measurements are performed in X, Y, Z axis positioning for Transmitting mode, and found the X axis positioning which it is the worst case.
j. Repeat above procedures until all frequencies measured was complete.

Remark:
1) For emission below 1GHz, through pre-scan found the worst case is the lowest channel. Only the worst case is recorded in the report.
2) The field strength is calculated by adding the Antenna Factor, Cable Factor & Preamplifier. The basic equation with a sample calculation is as follows:
Final Test Level =Receiver Reading + Antenna Factor + Cable Factor - Preamplifier Factor
3) Scan from 9kHz to 25GHz, the disturbance above 12.75GHz and below 30MHz was very low. The points marked on above plots are the highest emissions could be found when testing, so only above points had been displayed. The amplitude of spurious emissions from the radiator which are attenuated more than 20dB below the limit need not be reported.fundamental frequency is blocked by filter, and only spurious emission is shown.
4) For frequencies above 1GHz, the field strength limits are based on average limits. However, the peak field strength of any emission shall not exceed the maximum permitted average limits specified above by more than 20 dB under any condition of modulation. For the emissions whose peak level is lower than the average limit, only the peak measurement is shown in the report.

12.4 TEST DATA

Below 1GHz

[TestMode: TX ]; [Polarity: Horizontal]

[Graph Description: A plot showing Radiated Emission Measurement from 30 MHz to 1000 MHz. The Y-axis represents field strength in dBuV/m, and the X-axis represents frequency in MHz. Two lines are plotted: one representing the limit (FCC Part15 Class B) and the other showing measured emissions. Several peaks are visible below the limit line.]

Test Result: Pass

Below 1GHz

[TestMode: TX]; [Polarity: Vertical]

[Graph Description: A plot showing Radiated Emission Measurement from 30 MHz to 1000 MHz. The Y-axis represents field strength in dBuV/m, and the X-axis represents frequency in MHz. Two lines are plotted: one representing the limit (FCC Part15 Class B) and the other showing measured emissions. Several peaks are visible below the limit line.]

Test Result: Pass

Above 1GHz

[TestMode: TX lowest channel]; [Polarity: Horizontal]

[Graph Description: A plot showing Radiated Emission Measurement from 1000 MHz to 12750 MHz. The Y-axis represents field strength in dBuV/m, and the X-axis represents frequency in MHz. Two lines are plotted: FCC Part15 (PK) and FCC Part15 (AV). Several peaks are visible, some approaching the PK limit.]

Test Result: Pass

Above 1GHz

[TestMode: TX lowest channel]; [Polarity: Vertical]

[Graph Description: A plot showing Radiated Emission Measurement from 1000 MHz to 12750 MHz. The Y-axis represents field strength in dBuV/m, and the X-axis represents frequency in MHz. Two lines are plotted: FCC Part15 (PK) and FCC Part15 (AV). Several peaks are visible, some approaching the PK limit.]

Test Result: Pass

21 APPENDIX

The appendix contains detailed test data and results for various conducted and radiated emission tests, including:

• 21.1 CONDUCTED RF SPURIOUS EMISSION
• 21.2 BAND EDGE
• 21.3 BAND EDGE(HOPPING)
• 21.4 DWELL TIME
• 21.5 NUMBER OF HOPPING CHANNEL
• 21.6 CARRIER FREQUENCIES SEPARATION
• 21.7 -20DB BANDWIDTH
• 21.8 OCCUPIED CHANNEL BANDWIDTH
• 21.9 MAXIMUM CONDUCTED OUTPUT POWER

(Note: Detailed content for each appendix item is not fully provided in the extracted pages.)