Anker Soundcore 3 (Model A3117) Test Report
Report No.: AGC01110200738FE03
EUT and Test Parameters
| Parameter | Value |
|---|---|
| EUT | Soundcore 3 |
| Model Name | A3117 |
| Temperature | 25°C |
| Pressure | 960hPa |
| Test Mode | Mode 7 (PK, Vertical), Mode 9 (PK, Horizontal/Vertical) |
| Relative Humidity | 55.4% |
| Test Voltage | Normal Voltage |
11. NUMBER OF HOPPING FREQUENCY
11.1. MEASUREMENT PROCEDURE
- Enable the EUT's hopping function.
- Set spectrum analyzer span to the frequency band of operation. Adjust span if necessary to clearly view individual channels.
- Set RBW to less than 30% of the channel spacing or the 20 dB bandwidth, whichever is smaller.
- Set VBW ≥ RBW. Use Auto Sweep, Peak Detector, and Max hold Trace. Allow the trace to stabilize.
11.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION)
Test setup configuration as described in section 8.2.
11.3. MEASUREMENT EQUIPMENT USED
Measurement equipment as described in section 6.
11.4. LIMITS AND MEASUREMENT RESULT
| TOTAL NO. OF HOPPING CHANNEL | LIMIT (NO. OF CH) | MEASUREMENT (NO. OF CH) | RESULT |
|---|---|---|---|
| >=15 | 79 | PASS |
Test plot for the number of total channels. The spectrum analyzer plot shows the distribution of hopping frequencies across the band, with frequency on the x-axis and power on the y-axis.
Note: The GFSK modulation is the worst case and recorded in the report.
12. TIME OF OCCUPANCY (DWELL TIME)
12.1. MEASUREMENT PROCEDURE
- Enable the EUT's hopping function.
- Set spectrum analyzer span to zero, centered on a hopping channel.
- Set RBW to channel spacing or greater than 1/T, where T is the expected dwell time per channel.
- Adjust sweep to capture the entire dwell time per hopping channel, using video trigger and trigger delay if necessary. Adjust trigger level to avoid adjacent channel triggering.
- Set Detector function to Peak and Trace to Max hold.
- Use the marker-delta function to determine the transmit time per hop.
- Repeat the measurement with a longer sweep time to determine the number of hops over a specified period. Calculate total hops using: (Number of hops in period) = (hops on analyzer) * (period / analyzer sweep time).
- Calculate the average time of occupancy by multiplying the transmit time per hop by the number of hops.
12.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION)
Test setup configuration as described in section 8.2.
12.3. MEASUREMENT EQUIPMENT USED
Measurement equipment as described in section 6.
12.4. LIMITS AND MEASUREMENT RESULT
| Channel | Time of Pulse for DH5 (ms) | Number of hops in the period specified in the requirements | Dwell Time (ms) | Limit (ms) |
|---|---|---|---|---|
| Low | 2.867 | 26*4 | 298.168 | 400 |
| Middle | 2.867 | 27*4 | 309.636 | 400 |
| High | 2.858 | 27*4 | 308.664 | 400 |
Note: The 8DPSK modulation is the worst case and recorded in the report.
13. FREQUENCY SEPARATION
13.1. MEASUREMENT PROCEDURE
- Enable the EUT's hopping function.
- Set spectrum analyzer span wide enough to capture the peaks of two adjacent channels.
- Set RBW to approximately 30% of the channel spacing; adjust as necessary to best identify the center of each individual channel.
- Set VBW ≥ RBW. Use Auto Sweep, Peak Detector, and Max hold Trace. Allow the trace to stabilize.
- Use the marker-delta function to determine the separation between the peaks of the adjacent channels.
13.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION)
Test setup configuration as described in section 6.2.
13.3. MEASUREMENT EQUIPMENT USED
Measurement equipment as described in section 6.3.
13.4. LIMITS AND MEASUREMENT RESULT
| CHANNEL | CHANNEL SEPARATION KHz | LIMIT (KHz) | RESULT |
|---|---|---|---|
| CH01-CH02 | 1.000 | >=25 KHz or 2/3 20 dB BW | PASS |
Test plot for frequency separation. The spectrum analyzer plot shows two adjacent channels, with markers indicating the frequency difference.
Note: The GFSK modulation is the worst case and recorded in the report.
14. FCC LINE CONDUCTED EMISSION TEST
14.1. LIMITS OF LINE CONDUCTED EMISSION TEST
| Frequency | Q.P.(dBuV) | Average(dBuV) |
|---|---|---|
| 150kHz~500kHz | 66-56 | 56-46 |
| 500kHz~5MHz | 56 | 46 |
| 5MHz~30MHz | 60 | 50 |
Note: 1. The lower limit shall apply at the transition frequency. 2. The limit decreases linearly with the logarithm of the frequency in the range 0.15 MHz to 0.50 MHz.
14.2. BLOCK DIAGRAM OF LINE CONDUCTED EMISSION TEST
Block diagram illustrating the test setup for line conducted emission. It shows the EUT & Support Units placed on a table (80cm height, 80cm from wall), connected via a LISN to measurement equipment.
14.3. PRELIMINARY PROCEDURE OF LINE CONDUCTED EMISSION TEST
- Set up equipment to simulate typical actual usage. For tabletop systems, use a wooden table (0.8m height) on the ground plane. For floor-standing equipment, place on ground plane with non-conductive covering.
- Position support equipment as per ANSI C63.10.
- Position all I/O cables to simulate typical actual usage as per ANSI C63.10.
- Power all support equipment with AC120V/60Hz from a LISN, if applicable.
- Power the EUT with DC 5V from a control board, which receives AC120V/60Hz from a LISN.
- Start the test program. Measure emissions on each current carrying line of the EUT using a spectrum Analyzer/Receiver connected to the LISN. Two scans are taken: Line 1 to Analyzer/Receiver and Line 2 to a 50 ohm load; then Line 1 to a 50 ohm load and Line 2 to the Analyzer/Receiver.
- Scan Analyzer/Receiver from 150 kHz to 30MHz for emissions in each test mode.
- Maximize emissions by cable manipulation during scans.
- Scan all test modes during the preliminary test.
The EUT configuration and cable configuration yielding the highest emission level were recorded for final testing.
14.4. FINAL PROCEDURE OF LINE CONDUCTED EMISSION TEST
- Set up EUT and support equipment as per step 2 of the preliminary test.
- Scan both power lines (Line 1 and Line 2), recording at least the six highest emissions. Record emission frequency and amplitude. Use correction factors to calculate emission levels and compare them to applicable limits. If EUT emission level in Peak mode is less than 2dB below the Average limit, re-check using Q.P. and Average detectors.
- Report the test data of the worst-case condition(s).
14.5. TEST RESULT OF LINE CONDUCTED EMISSION TEST
Line Conducted Emission Test - L1
Line conducted emission test plot for Line 1 (L1). The plot displays frequency (150kHz to 30MHz) on the x-axis and signal level (dBμV) on the y-axis, showing quasi-peak (QP) and average (AV) measurements against the regulatory limits.
| Frequency (MHz) | Level (dBμV) | Transd (dB) | Limit (dBμV) | Margin (dB) | Detector | Line | PE |
|---|---|---|---|---|---|---|---|
| 0.166000 | 45.30 | 9.3 | 65 | 19.9 | QP | L1 | GND |
| 0.190000 | 44.30 | 9.3 | 64 | 19.7 | QP | L1 | GND |
| 0.274000 | 40.90 | 9.3 | 61 | 20.1 | QP | L1 | GND |
| 0.306000 | 43.40 | 9.3 | 60 | 16.7 | QP | L1 | GND |
| 0.334000 | 42.60 | 9.3 | 59 | 16.8 | QP | L1 | GND |
| 0.722000 | 41.20 | 9.3 | 56 | 14.8 | QP | L1 | GND |
| 0.166000 | 34.30 | 9.3 | 55 | 20.9 | AV | L1 | GND |
| 0.194000 | 31.70 | 9.3 | 54 | 22.6 | AV | L1 | GND |
| 0.254000 | 29.10 | 9.3 | 52 | 23.0 | AV | L1 | GND |
| 0.306000 | 28.10 | 9.3 | 50 | 22.0 | AV | L1 | GND |
| 0.334000 | 27.50 | 9.3 | 49 | 21.8 | AV | L1 | GND |
| 0.726000 | 33.20 | 9.3 | 46 | 12.8 | AV | L1 | GND |
Line Conducted Emission Test - N
Line conducted emission test plot for Neutral Line (N). The plot displays frequency (150kHz to 30MHz) on the x-axis and signal level (dBμV) on the y-axis, showing quasi-peak (QP) and average (AV) measurements against the regulatory limits.
| Frequency (MHz) | Level (dBμV) | Transd (dB) | Limit (dBμV) | Margin (dB) | Detector | Line | PE |
|---|---|---|---|---|---|---|---|
| 0.170000 | 42.70 | 9.3 | 65 | 22.3 | QP | N | GND |
| 0.190000 | 41.80 | 9.3 | 64 | 22.2 | QP | N | GND |
| 0.278000 | 41.40 | 9.3 | 61 | 19.5 | QP | N | GND |
| 0.306000 | 42.50 | 9.3 | 60 | 17.6 | QP | N | GND |
| 0.386000 | 35.70 | 9.3 | 58 | 22.4 | QP | N | GND |
| 0.726000 | 41.20 | 9.3 | 56 | 14.8 | QP | N | GND |
| 0.166000 | 32.70 | 9.3 | 55 | 22.5 | AV | N | GND |
| 0.194000 | 30.90 | 9.3 | 54 | 23.0 | AV | N | GND |
| 0.278000 | 27.80 | 9.3 | 51 | 23.1 | AV | N | GND |
| 0.306000 | 29.10 | 9.3 | 50 | 21.0 | AV | N | GND |
| 0.386000 | 26.80 | 9.3 | 48 | 21.3 | AV | N | GND |
| 0.726000 | 31.70 | 9.3 | 46 | 14.3 | AV | N | GND |
RESULT: PASS
Note: All the test modes had been tested, the mode 9 was the worst case. Only the data of the worst case would be recorded in this test report.
Appendices and End of Report
Appendices A and B refer to photographs of the test setup and EUT, respectively.
----END OF REPORT----
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