Appendix A: RF Test Data for BT(BDR/EDR) (Conducted Measurement)
This appendix details the radio frequency test results for the Bluetooth headset.
Environmental Conditions
| Parameter | Value |
| Temperature | 22.5 °C |
| Relative Humidity | 55.6% |
| ATM Pressure | 100.0 kPa |
| Test Engineer | Gary Qian |
| Supervised by | Eden Hu |
A.1 20 dB Bandwidth
| Mode | Channel | 20dB Bandwidth [MHz] | Limit(MHz) | Verdict |
| GFSK | LCH | 0.963 | Not Specified | PASS |
| GFSK | MCH | 0.935 | Not Specified | PASS |
| GFSK | HCH | 0.940 | Not Specified | PASS |
| π/4DQPSK | LCH | 1.335 | Not Specified | PASS |
| π/4DQPSK | MCH | 1.332 | Not Specified | PASS |
| π/4DQPSK | HCH | 1.336 | Not Specified | PASS |
Spectrum analyzer plots showing the 20 dB bandwidth for GFSK and π/4DQPSK modes at Low, Middle, and High channels. The plots display the occupied bandwidth, transmit frequency error, and x dB bandwidth.
A.2 Dwell Time
| Mode | Packet | Channel | Burst Width [ms/hop/ch] | Total Hops[hop*ch] | Dwell Time[s] | Limit [s] | Verdict |
| GFSK | DH5 | LCH | 0.00321295 | 106.7 | 0.34282177 | 0.4 | PASS |
| GFSK | DH5 | MCH | 0.003098497 | 106.7 | 0.330609681 | 0.4 | PASS |
| GFSK | DH5 | HCH | 0.002888395 | 106.7 | 0.308191787 | 0.4 | PASS |
| π/4DQPSK | 2DH5 | LCH | 0.002886448 | 106.7 | 0.307984036 | 0.4 | PASS |
| π/4DQPSK | 2DH5 | MCH | 0.0028837 | 106.7 | 0.307690737 | 0.4 | PASS |
| π/4DQPSK | 2DH5 | HCH | 0.002892336 | 106.7 | 0.308612239 | 0.4 | PASS |
Spectrum analyzer plots illustrating the dwell time for GFSK and π/4DQPSK modes. These plots show the duration of transmitted pulses and their distribution over time, confirming compliance with the 0.4-second limit.
A.3 Carrier Frequency Separation
| Mode | Channel | Carrier Frequency Separation [MHz] | Limit [MHz] | Verdict |
| GFSK | LCH | 0.999 | 0.642 | PASS |
| GFSK | MCH | 1.000 | 0.623 | PASS |
| GFSK | HCH | 0.996 | 0.627 | PASS |
| π/4DQPSK | LCH | 1.001 | 0.890 | PASS |
| π/4DQPSK | MCH | 1.003 | 0.888 | PASS |
| π/4DQPSK | HCH | 1.001 | 0.891 | PASS |
Spectrum analyzer plots demonstrating carrier frequency separation for GFSK and π/4DQPSK modes. The plots show two distinct peaks representing adjacent channels, with measured separation values exceeding the specified limits.
A.4 Hopping Channel Number
| Mode | Channel | Number of Hopping Channel[N] | Limit[N] | Verdict |
| GFSK | Hop | 79 | >=15 | PASS |
| π/4DQPSK | Hop | 79 | >=15 | PASS |
Spectrum analyzer plots showing the frequency hopping pattern. The plots confirm that the device utilizes 79 hopping channels, which meets the minimum requirement of 15 channels.
A.5 Conducted Peak Output Power
| Mode | Channel | Maximum Peak Output Power [dBm] | Limit [dBm] | Verdict |
| GFSK | LCH | 0.937 | 21 | PASS |
| GFSK | MCH | 1.427 | 21 | PASS |
| GFSK | HCH | 1.802 | 21 | PASS |
| π/4DQPSK | LCH | 0.742 | 21 | PASS |
| π/4DQPSK | MCH | 1.225 | 21 | PASS |
| π/4DQPSK | HCH | 1.595 | 21 | PASS |
Spectrum analyzer plots illustrating the conducted peak output power for GFSK and π/4DQPSK modes across different channels. The measured power levels are well within the 21 dBm limit.
A.6 Band-edge for RF Conducted Emissions
| Type | Carrier Frequency(MHz) | Frequency(MHz) | Carrier Power Peak [dBm] | Bandedge Peak(dBm) | Upper limit(dBm) | Conclusion |
| 1DH5 | 2402 | 2390 | 0.318 | -60.78 | -19.682 | Pass |
| 1DH5 | 2402 | 2400 | 0.318 | -55.44 | -19.682 | Pass |
| 1DH5-Hopping | 2402 | 2390 | 0.588 | -59.5 | -19.412 | Pass |
| 1DH5-Hopping | 2402 | 2400 | 0.588 | -60.92 | -19.412 | Pass |
| 1DH5 | 2480 | 2483.5 | 1.596 | -61.24 | -18.404 | Pass |
| 1DH5 | 2480 | 2500 | 1.596 | -62.36 | -18.404 | Pass |
| 1DH5-Hopping | 2480 | 2483.5 | 1.327 | -60.64 | -18.673 | Pass |
| 1DH5-Hopping | 2480 | 2500 | 1.327 | -59.85 | -18.673 | Pass |
| 2DH5 | 2402 | 2390 | -3.638 | -60.92 | -23.638 | Pass |
| 2DH5 | 2402 | 2400 | -3.638 | -55.14 | -23.638 | Pass |
| 2DH5-Hopping | 2480 | 2483.5 | -0.047 | -60.16 | -20.047 | Pass |
| 2DH5-Hopping | 2480 | 2500 | -0.047 | -59.71 | -20.047 | Pass |
| 2DH5 | 2480 | 2483.5 | -0.803 | -62.32 | -20.803 | Pass |
| 2DH5 | 2480 | 2500 | -0.803 | -61.38 | -20.803 | Pass |
| 2DH5-Hopping | 2402 | 2390 | -2.746 | -0.236 | -60.52 | Pass |
| 2DH5-Hopping | 2402 | 2400 | -2.746 | -0.236 | -58.11 | Pass |
Spectrum analyzer plots showing RF conducted emissions at the band edges. These plots demonstrate compliance by showing that emissions outside the intended frequency bands are below the specified limits.
A.7 RF Conducted Spurious Emissions
Spectrum analyzer plots for GFSK (LCH, MCH, HCH) and π/4DQPSK (LCH, MCH, HCH) modes, showing the conducted spurious emissions across a wide frequency range (9 kHz to 26.5 GHz). The plots include the main signal (Pref) and the spurious emissions (Puw), indicating that out-of-band emissions are suppressed below the specified limits.
A.8 Restrict-band band-edge measurements
| Type | Carrier Frequency (MHz) | Frequency(MHz) | Gain | Ground Factor | Peak Value(dBm) | E [dBuV/m] | Limit [dBuV/m] | Average Value(dBm) | E [dBuV/m] | Limit [dBuV/m] | Conclusion |
| 1DH5 | 2402 | 2310 | -0.58 | 0.00 | -51.88 | 42.74 | 74 | -59.4 | 35.22 | 54 | Pass |
| 1DH5 | 2402 | 2390 | -0.58 | 0.00 | -51.17 | 43.45 | 74 | -59.07 | 35.55 | 54 | Pass |
| 1DH5 | 2480 | 2483.5 | -0.58 | 0.00 | -50.62 | 44 | 74 | -56.44 | 38.18 | 54 | Pass |
| 1DH5 | 2480 | 2500 | -0.58 | 0.00 | -50.49 | 44.13 | 74 | -58.51 | 36.11 | 54 | Pass |
| 2DH5 | 2402 | 2310 | -0.58 | 0.00 | -52.3 | 42.32 | 74 | -59.38 | 35.24 | 54 | Pass |
| 2DH5 | 2402 | 2390 | -0.58 | 0.00 | -52.92 | 41.7 | 74 | -59.03 | 35.59 | 54 | Pass |
| 2DH5 | 2480 | 2483.5 | -0.58 | 0.00 | -49.04 | 45.58 | 74 | -56.28 | 38.34 | 54 | Pass |
| 2DH5 | 2480 | 2500 | -0.58 | 0.00 | -51.39 | 43.23 | 74 | -58.5 | 36.12 | 54 | Pass |
Spectrum analyzer plots showing restrict-band band-edge measurements for various modes (1DH5, 2DH5) at different frequencies. These plots confirm that emissions in restricted frequency bands are below the specified peak and average limits.
