Manuals+

RF Test Report

Report No.: PTC25052716602E-FC01

9 20DB Occupy Bandwidth Test

9.1 Test Standard

Test Standard: FCC Part15 C Section 15.247 (a)(1)

9.2 Test Setup

The test setup consists of the Equipment Under Test (EUT) connected to a Spectrum Analyzer.

Diagram Description: A block diagram shows an 'EUT' box connected by a line to a 'Spectrum Analyzer' box.

9.3 Test Procedure

The following spectrum analyzer settings were used:

  1. Span: Approximately 2 to 3 times the 20dB bandwidth, centered on a hopping channel.
  2. RBW: 30 kHz.
  3. VBW: 100 kHz.
  4. Sweep time: Auto couple.
  5. Detector function: Peak.
  6. Trace mode: Max hold.
  7. Allow trace to fully stabilize.

9.4 Test Data

Test Item: 20dB BW

Test Voltage: 3.7V

Test Result: PASS

Test Mode: CH Low ~ CH High

Temperature: 24.5°C

Humidity: 55%RH

Data for 'L' Antenna Path:

TestMode Antenna Frequency[MHz] 20dB EBW[MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict
DH5Ant124020.9632401.5052402.468------
DH5Ant124410.9692440.4962441.465------
DH5Ant124800.9602479.5052480.465------
2DH5Ant124021.2122401.3672402.579------
2DH5Ant124411.2722440.3462441.618------
2DH5Ant124801.3142479.3162480.630------
3DH5Ant124021.3052401.3252402.630------
3DH5Ant124411.2212440.3672441.588------
3DH5Ant124801.2932479.3342480.627------

Data for 'R' Antenna Path:

TestMode Antenna Frequency[MHz] 20dB EBW[MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict
DH5Ant124020.9482401.5112402.459------
DH5Ant124410.9482440.5082441.456------
DH5Ant124800.9362479.5172480.453------
2DH5Ant124021.3292401.3072402.636------
2DH5Ant124411.2062440.3732441.579------
2DH5Ant124801.2812479.3462480.627------
3DH5Ant124021.2872401.3312402.618------
3DH5Ant124411.2932440.3402441.633------
3DH5Ant124801.2512479.3402480.591------

9.5 Test Graphs

The following spectrum analyzer graphs illustrate the 20dB Occupy Bandwidth test results. Each graph displays the power spectral density of the signal across a specified frequency span for different test modes (DH5, 2DH5, 3DH5) and antennas (Ant1) at various center frequencies (2402 MHz, 2441 MHz, 2480 MHz). Key parameters like Center Frequency, Span, RBW, VBW, and marker readings (e.g., peak power, bandwidth) are shown. The graphs visually confirm the occupied bandwidth measurements detailed in the tables above.

10 Carrier Frequency Separation Test

10.1 Test Standard and Limit

Test Standard: FCC Part15 C Section 15.247 (a)(1)

Test Limit: >25 KHz or two-thirds of the 20 dB bandwidth

10.2 Test Setup

The test setup involves connecting the Equipment Under Test (EUT) to a Spectrum Analyzer.

Diagram Description: A block diagram shows an 'EUT' box connected by a line to a 'Spectrum Analyzer' box.

10.3 Test Procedure

The EUT must have its hopping function enabled. The following spectrum analyzer settings were used:

  1. Span: Wide enough to capture the peaks of two adjacent channels.
  2. RBW: 300 kHz.
  3. VBW: 300 kHz.
  4. Sweep time: Auto couple.
  5. Detector function: Peak.
  6. Trace mode: Max hold.
  7. Allow trace to fully stabilize.

10.4 Test Data

Test Item: Frequency Separation

Test Voltage: 3.7V

Test Result: PASS

Test Mode: CH Low ~ CH High

Temperature: 24.5°C

Humidity: 55%RH

Data for 'L' Antenna Path:

TestMode Antenna Frequency[MHz] Result[MHz] Limit[MHz] Verdict
DH5Ant1Hop1.000≥0.646PASS
2DH5Ant1Hop1.106≥0.876PASS
3DH5Ant1Hop1.028≥0.870PASS

Data for 'R' Antenna Path:

TestMode Antenna Frequency[MHz] Result[MHz] Limit[MHz] Verdict
DH5Ant1Hop0.846≥0.632PASS
2DH5Ant1Hop1.302≥0.886PASS
3DH5Ant1Hop0.994≥0.862PASS

10.5 Test Graphs

Spectrum analyzer graphs display the frequency separation between adjacent hopping channels. These plots show the signal peaks for different modes (DH5, 2DH5, 3DH5) and antennas, with markers indicating the measured separation in MHz. The graphs visually confirm the results presented in the tables.

11 Number of Hopping Channel Test

11.1 Test Standard and Limit

Test Standard: FCC Part15 C Section 15.247 (a)(1)

Test Limit: >15 channels

11.2 Test Setup

The test setup involves connecting the Equipment Under Test (EUT) to a Spectrum Analyzer.

Diagram Description: A block diagram shows an 'EUT' box connected by a line to a 'Spectrum Analyzer' box.

11.3 Test Procedure

The EUT must have its hopping function enabled. The following spectrum analyzer setting was used:

  1. Span: The frequency band of operation.
  2. RBW: 300 kHz.
  3. VBW: 300 kHz.
  4. Sweep time: Auto couple.
  5. Detector function: Peak.
  6. Trace mode: Max hold.
  7. Allow trace to fully stabilize.

11.4 Test Data

Test Item: Number of Hopping Frequency

Test Voltage: 3.7V

Test Result: PASS

Test Mode: CH Low ~ CH High

Temperature: 24.5°C

Humidity: 55%RH

Data for 'L' Antenna Path:

TestMode Antenna Frequency[MHz] Result[Num] Limit[Num] Verdict
DH5Ant1Hop79≥15PASS
2DH5Ant1Hop79≥15PASS
3DH5Ant1Hop79≥15PASS

Data for 'R' Antenna Path:

TestMode Antenna Frequency[MHz] Result[Num] Limit[Num] Verdict
DH5Ant1Hop79≥15PASS
2DH5Ant1Hop79≥15PASS
3DH5Ant1Hop79≥15PASS

11.5 Test Graphs

Spectrum analyzer graphs show the entire operating frequency band, illustrating the distribution of hopping channels. These plots are used to count the number of active hopping channels, confirming compliance with the minimum channel requirement.

12 Dwell Time Test

12.1 Test Standard and Limit

Test Standard: FCC Part15 C Section 15.247 (a)(1)

Test Limit: 0.4 sec

12.2 Test Setup

The test setup involves connecting the Equipment Under Test (EUT) to a Spectrum Analyzer.

Diagram Description: A block diagram shows an 'EUT' box connected by a line to a 'Spectrum Analyzer' box.

12.3 Test Procedure

The EUT must have its hopping function enabled. The following spectrum analyzer settings were used:

  1. Span: Zero span, centered on a hopping channel.
  2. RBW: 1 MHz.
  3. VBW: 3 MHz.
  4. Sweep time: As necessary to capture the entire dwell time per hopping channel.
  5. Detector function: Peak.
  6. Trace mode: Clear write.
  7. Allow trace to fully stabilize.

12.4 Test Data

Test Item: Time of Occupancy

Test Voltage: 3.7V

Test Result: PASS

Test Mode: CH Low ~ CH High

Temperature: 24.5°C

Humidity: 55%RH

Data for 'L' Antenna Path:

TestMode Antenna Frequency[MHz] BurstWidth [ms] TotalHops [Num] Result[s] Limit[s] Verdict
DH5Ant1Hop2.910106.670.31≤0.4PASS
2DH5Ant1Hop2.915106.670.311≤0.4PASS
3DH5Ant1Hop2.917106.670.311≤0.4PASS
DH1Ant1Hop0.4053200.13≤0.4PASS
2DH1Ant1Hop0.4153200.133≤0.4PASS
3DH1Ant1Hop0.4173200.133≤0.4PASS
DH3Ant1Hop1.6611600.266≤0.4PASS
2DH3Ant1Hop1.6681600.267≤0.4PASS
3DH3Ant1Hop1.6671600.267≤0.4PASS

Data for 'R' Antenna Path:

TestMode Antenna Frequency[MHz] BurstWidth [ms] TotalHops [Num] Result[s] Limit[s] Verdict
DH5Ant1Hop2.910106.670.31≤0.4PASS
2DH5Ant1Hop2.914106.670.311≤0.4PASS
3DH5Ant1Hop2.918106.670.311≤0.4PASS
DH1Ant1Hop0.4043200.129≤0.4PASS
2DH1Ant1Hop0.4153200.133≤0.4PASS
3DH1Ant1Hop0.4173200.133≤0.4PASS
DH3Ant1Hop1.6611600.266≤0.4PASS
2DH3Ant1Hop1.6671600.267≤0.4PASS
3DH3Ant1Hop1.6671600.267≤0.4PASS

Note:

  • 1. DH1/2DH1/3DH1 Dwell Time: Reading * (1600/2)*31.6/(channel number).
  • 2. DH3/2DH3/3DH3 Dwell Time: Reading * (1600/4)*31.6/(channel number).
  • 3. DH5/2DH5/3DH5 Dwell Time: Reading * (1600/6)*31.6/(channel number).

12.5 Test Graphs

Spectrum analyzer graphs for the Dwell Time test show the duration of individual transmission bursts. These plots are captured with a zero span setting, focusing on the time domain to measure the pulse width and confirm the dwell time per channel, ensuring compliance with the specified limit.

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