test report

FCC ID: 2AOSY-SENSE02

Test Report

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FCCID_4504197

Table of contents
Table of contents ..........................................................................................................................................................................................................3
Section 1. Report summary .................................................................................................................................................................................4
1.1 Applicant and manufacturer ................................................................................................................................................................................................ 4
1.2 Test specifications ................................................................................................................................................................................................................. 4
1.3 Test methods ......................................................................................................................................................................................................................... 4
1.4 Statement of compliance ..................................................................................................................................................................................................... 4
1.5 Exclusions .............................................................................................................................................................................................................................. 4
1.6 Test report revision history .................................................................................................................................................................................................. 4
Section 2. Summary of test results .......................................................................................................................................................................5
2.1 FCC Part 15 Subpart C, general requirements test results................................................................................................................................................. 5
2.2 FCC Part 15 Subpart C, intentional radiators test results................................................................................................................................................... 5
Section 3. Equipment under test (EUT) details .....................................................................................................................................................6
3.1 Sample information .............................................................................................................................................................................................................. 6
3.2 EUT information .................................................................................................................................................................................................................... 6
3.3 Technical information ........................................................................................................................................................................................................... 6
3.4 Product description and theory of operation ..................................................................................................................................................................... 7
3.5 EUT exercise details .............................................................................................................................................................................................................. 7
3.6 EUT setup diagram ................................................................................................................................................................................................................ 7
3.7 EUT sub assemblies ............................................................................................................................................................................................................... 8
Section 4. Engineering considerations ..................................................................................................................................................................8
4.1 Modifications incorporated in the EUT ............................................................................................................................................................................... 8
4.2 Technical judgment ............................................................................................................................................................................................................... 8
4.3 Deviations from laboratory tests procedures ..................................................................................................................................................................... 8
Section 5. Test conditions ....................................................................................................................................................................................9
5.1 Atmospheric conditions ........................................................................................................................................................................................................ 9
5.2 Power supply range .............................................................................................................................................................................................................. 9
Section 6. Measurement uncertainty ................................................................................................................................................................. 10
6.1 Uncertainty of measurement ............................................................................................................................................................................................. 10
Section 7. Test equipment ................................................................................................................................................................................. 11
7.1 Test equipment list ............................................................................................................................................................................................................. 11
Section 8. Test Data ........................................................................................................................................................................................... 12
8.1 FCC 15.247(a) (2) Minimum 6 dB bandwidth .................................................................................................................................................................... 12
8.2 FCC 15.247(b) Transmitter output power and e.i.r.p. requirements .............................................................................................................................. 15
8.3 FCC 15.247(d) (out-of-band) emissions ............................................................................................................................................................................. 17
8.4 FCC 15.247(d) (Band edge .................................................................................................................................................................................................. 21
8.5 FCC 15.247(e) Power Spectrum Density ............................................................................................................................................................................ 23
Section 9. Block diagrams of test set-ups ........................................................................................................................................................... 26
9.5 Radiated emissions set-up – Below 1GHz ......................................................................................................................................................................... 26
9.6 Radiated emissions set-up – Above 1GHz ......................................................................................................................................................................... 27
9.7 Antenna Port Conducted emissions set-up – .................................................................................................................................................................... 28

Report reference ID: 377510-1TRFWL –(FCC-15.247) Page 3 of 29

Section 4: Engineering consideration

Section 2. Summary of test results

2.1 FCC Part 15 Subpart C, general requirements test results

Part Test description Verdict
§15.207(a) Conducted limits Pass
§15.31(e) Variation of power source Pass
§15.203 Antenna requirement Pass
§15.205 Restricted bands of operation Pass
Notes:

2.2 FCC Part 15 Subpart C, intentional radiators test results

Part Test description Verdict
§15.247(a)(1) 20 dB bandwidth of the hopping channel Not applicable
§15.247(a)(1)(i) Frequency hopping systems operating in the 902–928 MHz band Not applicable
§15.247(a)(1)(ii) Frequency hopping systems operating in the 5725–5850 MHz band Not applicable
§15.247(a)(1)(iii) Frequency hopping systems operating in the 2400–2483.5 MHz band Not applicable
§15.247(a)(2) Minimum 6 dB bandwidth for systems using digital modulation techniques Pass
§15.247(b)(1) Maximum peak output power of frequency hopping systems operating in the 2400–2483.5 MHz band
Pass
and 5725–5850 MHz band
§15.247(b)(2) Maximum peak output power of Frequency hopping systems operating in the 902–928 MHz band Not applicable
§15.247(b)(3) Maximum peak output power of systems using digital modulation in the 902–928 MHz, 2400–2483.5
Pass
MHz, and 5725–5850 MHz bands
§15.247(c)(1) Fixed point-to-point operation with directional antenna gains greater than 6 dBi Not applicable
§15.247(c)(2) Transmitters operating in the 2400–2483.5 MHz band that emit multiple directional beams Not applicable
§15.247(d) Spurious emissions Pass
§15.247(e) Power spectral density for digitally modulated devices Pass
§15.247(f) Time of occupancy for hybrid systems Not applicable

Report reference ID: 377510-1TRFWL –(FCC-15.247) Page 5 of 29

Section 5: Test conditions

Section 5. Test conditions

5.1 Atmospheric conditions

Temperature 15–30 °C
Relative humidity 20–75 %
Air pressure 860–1060 mbar

When it is impracticable to carry out tests under these conditions, a note to this effect stating the ambient temperature and relative humidity during the
tests shall be recorded and stated.

5.2 Power supply range

The normal test voltage for equipment to be connected to the mains shall be the nominal mains voltage. For the purpose of the present document, the
nominal voltage shall be the declared voltage, or any of the declared voltages ±5 %, for which the equipment was designed.

Report reference ID: 377510-1TRFWL –(FCC-15.247) Page 9 of 29

Section 6: Measurement uncertainty

Section 6. Measurement uncertainty

6.1 Uncertainty of measurement

Measurement uncertainty budgets for the tests are detailed below. Measurement uncertainty calculations assume a coverage factor of K = 2 with
95% certainty.

Test name Measurement uncertainty, dB
All antenna port measurements/ including OBW 0.55
Conducted spurious emissions 1.13
Radiated spurious emissions 3.78
AC power line conducted emissions 1.38
Supply Voltages 0.05%
Time 2.09%

Report reference ID: 377510-1TRFWL –(FCC-15.247) Page 10 of 29

Section 8 Testing data
Test name FCC 15.247(b) Transmitter output power and e.i.r.p. requirements
Specification FCC Part 15 Subpart C

Section 8. Test Data

8.1 FCC 15.247(a) (2) Minimum 6 dB bandwidth

8.1.1 Definitions and limits

FCC 15.247:
(a) (2) Systems using digital modulation techniques may operate in the 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz bands. The minimum 6
dB bandwidth shall be at least 500 kHz.

8.1.2 Test summary

Test date July 25, 2029 Temperature 20 °C
Test engineer Andres Martinez Air pressure 1007 mbar
Verdict Pass Relative humidity 51 %

8.1.3 Observations, settings and special notes

Spectrum analyzer settings:

Resolution bandwidth 100 kHz
Video bandwidth ≥3 × RBW
Frequency span 10 MHz
Detector mode Peak
Trace mode Max Hold

Report reference ID: 377510-1TRFWL –(FCC-15.247) Page 12 of 29

Section 8 Testing data
Test name FCC 15.247(b) Transmitter output power and e.i.r.p. requirements
Specification FCC Part 15 Subpart C

8.2 FCC 15.247(b) Transmitter output power and e.i.r.p. requirements

8.2.1 Definitions and limits

FCC:
(b) The maximum peak conducted output power of the intentional radiator shall not exceed the following:
(3) For systems using digital modulation in the 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz bands: 1 Watt. As an alternative to a peak
power measurement, compliance with the one-Watt limit can be based on a measurement of the maximum conducted output power.
Maximum Conducted Output Power is defined as the total transmit power delivered to all antennas and antenna elements averaged across
all symbols in the signaling alphabet when the transmitter is operating at its maximum power control level. Power must be summed across all
antennas and antenna elements. The average must not include any time intervals during which the transmitter is off or is transmitting at a
reduced power level. If multiple modes of operation are possible (e.g., alternative modulation methods), the maximum conducted output
power is the highest total transmit power occurring in any mode.
(4) The conducted output power limit specified in paragraph (b) of this section is based on the use of antennas with directional gains that do not
exceed 6 dBi. Except as shown in paragraph (c) of this section, if transmitting antennas of directional gain greater than 6 dBi are used, the
conducted output power from the intentional radiator shall be reduced below the stated values in paragraphs (b)(1), (b)(2), and (b)(3) of this
section, as appropriate, by the amount in dB that the directional gain of the antenna exceeds 6 dBi.

8.2.2 Test summary

Test date July 25, 2019 Temperature 20 °C
Test engineer Andres Martinez Air pressure 1007 mbar
Verdict Pass Relative humidity 51 %

8.2.3 Observations, settings and special notes
Peak Conducted Power Measured from antenna power is less than 1W (30dBm)
EIRP is less than 4W (36dBm) with measured antenna gains
Tested with Power Meter

Report reference ID: 377510-1TRFWL –(FCC-15.247) Page 15 of 29

Section 8 Testing data
Test name FCC 15.247(b) Transmitter output power and e.i.r.p. requirements
Specification FCC Part 15 Subpart C

8.2.4 Test data

Table 8.1-1: Output Power

Power Conducted Port Result Limit Result
Frequency,
Modulation Meter Limit (dBm) Antenna Gain (dBi) EIRP (dBm) EIRP(dBm)
MHz
(dBm)
2402 4.38 30 Pass 2.26 6.64 36 Pass
GFSK 2440 3.52 30 Pass 1.70 5.22 36 Pass
2480 3.34 30 Pass 1.78 5.12 36 Pass

Report reference ID: 377510-1TRFWL –(FCC-15.247) Page 16 of 29

Section 8 Testing data
Test name FCC 15.247(e)) PSD
Specification FCC Part 15 Subpart C

8.3 FCC 15.247(d) (out-of-band) emissions

8.3.1 Definitions and limits

FCC:
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)).

Per ANSI 63.10 band edges and restricted bands near the 2.4 to 2.4835 GHz band were performed using Antenna Conducted port method.

Table 8.3-1: FCC §15.209– Radiated emission limits

Frequency, Field strength of emissions Measurement distance, m
MHz µV/m dBµV/m
0.009–0.490 2400/F 67.6 – 20 × log10(F) 300
0.490–1.705 24000/F 87.6 – 20 × log10(F) 30
1.705–30.0 30 29.5 30
30–88 100 40.0 3
88–216 150 43.5 3
216–960 200 46.0 3
above 960 500 54.0 3
Notes: In the emission table above, the tighter limit applies at the band edges.
For frequencies above 1 GHz the limit on peak RF emissions is 20 dB above the maximum permitted average emission limit applicable to the
equipment under test.

Table 8.3-2: FCC restricted frequency bands

MHz MHz MHz GHz
0.090–0.110 16.42–16.423 399.9–410 4.5–5.15
0.495–0.505 16.69475–16.69525 608–614 5.35–5.46
2.1735–2.1905 16.80425–16.80475 960–1240 7.25–7.75
4.125–4.128 25.5–25.67 1300–1427 8.025–8.5
4.17725–4.17775 37.5–38.25 1435–1626.5 9.0–9.2
4.20725–4.20775 73–74.6 1645.5–1646.5 9.3–9.5
6.215–6.218 74.8–75.2 1660–1710 10.6–12.7
6.26775–6.26825 108–121.94 1718.8–1722.2 13.25–13.4
6.31175–6.31225 123–138 2200–2300 14.47–14.5
8.291–8.294 149.9–150.05 2310–2390 15.35–16.2
8.362–8.366 156.52475–156.52525 2483.5–2500 17.7–21.4
8.37625–8.38675 156.7–156.9 2690–2900 22.01–23.12
8.41425–8.41475 162.0125–167.17 3260–3267 23.6–24.0
12.29–12.293 167.72–173.2 3332–3339 31.2–31.8
12.51975–12.52025 240–285 3345.8–3358 36.43–36.5
12.57675–12.57725 322–335.4 3600–4400 Above 38.6
13.36–13.41

Report reference ID: 377510-1TRFWL –(FCC-15.247) Page 17 of 29

Section 8 Testing data
Test name FCC 15.247(e)) PSD
Specification FCC Part 15 Subpart C

8.3.2 Test summary

Test date July 25, 2019 Temperature 20 °C
Test engineer Andres Martinez Air pressure 1007 mbar
Verdict Pass Relative humidity 51 %

8.3.3 Observations, settings and special notes

The spectrum was searched from 30 MHz to the 10th harmonic.
EUT was set to transmit with 100 % duty cycle.
EUT was evaluated in X, Y and Z polarizations and worst case was chosen for testing
Antenna 0 path was selected for most radiated test cases as worst case. Plots represents worst case transmitter spurious from 30MHz to 18GHz.

Spectrum analyzer settings for radiated measurements within restricted bands below 1 GHz:

Resolution bandwidth: 100 kHz
Video bandwidth: 3 MHz
Detector mode: Peak
Trace mode: Max Hold

Spectrum analyzer settings for peak radiated measurements within restricted bands above 1 GHz:

Resolution bandwidth: 1 MHz
Video bandwidth: 3 MHz
Detector mode: Peak
Trace mode: Max Hold

Spectrum analyzer settings for average radiated measurements within restricted bands above 1 GHz:

Resolution bandwidth: 1 MHz
Video bandwidth: 3 MHz
Detector mode: AVG
Trace mode: Max Hold

Report reference ID: 377510-1TRFWL –(FCC-15.247) Page 18 of 29

Section 8 Testing data
Test name FCC 15.247(e)) PSD
Specification FCC Part 15 Subpart C

8.4 FCC 15.247(d) (Band edge

8.4.4 Definitions and limits

FCC:
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)).

Per ANSI 63.10 band edges and restricted bands near the 2.4 to 2.4835 GHz band were performed using Antenna Conducted port method.

8.4.5 Test summary

Test date July 29, 2019 Temperature 21 °C
Test engineer Andres Martinez Air pressure 1007 mbar
Verdict Pass Relative humidity 51 %

8.4.6 Observations, settings and special notes

The spectrum was searched from 30 MHz to the 10th harmonic.
EUT was set to transmit with 100 % duty cycle.
EUT was evaluated in X, Y and Z polarizations and worst case was chosen for testing
Antenna 0 path was selected for most radiated test cases as worst case. Plots represents worst case transmitter spurious from 30MHz to 18GHz.

Spectrum analyzer settings for peak radiated measurements at Band Edge above 1 GHz:

Limit displayed is -41dBm which is equivalent to 54dBµV/m at 3meter.
Table below adds in antenna gain to demonstrate EIRP result

Resolution bandwidth: 100 kHz
Video bandwidth: 3 MHz
Detector mode: Peak
Trace mode: Max Hold

Spectrum analyzer settings for average radiated measurements at Band Edge above 1 GHz:

Resolution bandwidth: 100 kHz
Video bandwidth: 3 MHz
Detector mode: RMS (power averaging)
Trace mode: Max Hold

Report reference ID: 377510-1TRFWL –(FCC-15.247) Page 21 of 29

Section 8 Testing data
Test name FCC 15.247(e)) PSD
Specification FCC Part 15 Subpart C

8.5 FCC 15.247(e) Power Spectrum Density

8.5.4 Definitions and limits

FCC
For digitally modulated systems, the power spectral density conducted from the intentional radiator to the antenna shall not be greater than 8 dBm in any
3 kHz band during any time interval of continuous transmission. This power spectral density shall be determined in accordance with the provisions of
paragraph (b) of this section. The same method of determining the conducted output power shall be used to determine the power spectral density.

8.5.5 Test summary

Test date July 25, 2019 Temperature 20 °C
Test engineer Andres Martinez Air pressure 1007 mbar
Verdict Pass Relative humidity 51 %

8.5.6 Observations, settings and special notes

Power output is less than 8dbm therefor PSD complies.

The device PSD even utilizing a 1MHz band with was below the required Limit - See Mid Channel plot at 1MHz RBW

8.5.7 Test data
Table 8.4-1: Power Spectrum Density

Conducted
PSD@100kHz
Frequency, Margin,
Modulation dBm
MHz dB
Antenna Gain Total
Measured Limit
dBi dBm
2402 2.82 2.26 5.08 8 2.92
GFSK 2441 (NOTE) 4.13 1.70 5.83 8 2.17
2480 2.39 1.78 4.17 8 3.83

NOTE: 2441MHz was measured with a 1MHz RBW and still complies with the FCC limit of 8dBm/3kHz Limit (See plot below)

Report reference ID: 377510-1TRFWL –(FCC-15.247) Page 23 of 29

Document Created: 2019-11-07 16:41:39
Document Modified: 2019-11-07 16:41:39

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