Test Report

FCC ID: XQC-WST712

Test Report

Download: PDF

FCCID_2706009

REPORT NO: 15U21269A DATE: AUGUST 3, 2015
FCC ID: XQC-WST712 IC: 9863B-WST712

Revision History

Issue
Rev. Date Revisions Revised By
-- 7/21/15 Initial Issue P. Zhang
A 8/3/15 Update page 5, 20dB OBW, page 23, page 28 P. Zhang
B 8/3/15 Update page 21, OBW test procedure P. Zhang

Page 2 of 39
UL VERIFICATION SERVICES INC FORM NO: CCSUP4701I
47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888
This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc..

REPORT NO: 15U21269A DATE: AUGUST 3, 2015
FCC ID: XQC-WST712 IC: 9863B-WST712

TABLE OF CONTENTS
1. ATTESTATION OF TEST RESULTS ................................................................................. 4

2. TEST METHODOLOGY ..................................................................................................... 5

3. FACILITIES AND ACCREDITATION ................................................................................. 5

4. CALIBRATION AND UNCERTAINTY ................................................................................ 5
4.1. MEASURING INSTRUMENT CALIBRATION .............................................................. 5
4.2. SAMPLE CALCULATION ............................................................................................ 5
4.3. MEASUREMENT UNCERTAINTY ............................................................................... 6

5. EQUIPMENT UNDER TEST ............................................................................................... 7
5.1. DESCRIPTION OF EUT .............................................................................................. 7
5.2. DESCRIPTION OF AVAILABLE ANTENNAS .............................................................. 7
5.3. SOFTWARE AND FIRMWARE .................................................................................... 7
5.4. WORST-CASE CONFIGURATION AND MODE .......................................................... 7
5.5. MODIFICATIONS ........................................................................................................ 7
5.1. DESCRIPTION OF TEST SETUP................................................................................ 8

6. TEST AND MEASUREMENT EQUIPMENT ......................................................................10

7. ANTENNA PORT TEST RESULTS ...................................................................................11
7.1. 20 dB AND 99% BW ...................................................................................................11
7.2. DUTY CYCLE .............................................................................................................15
7.3. TRANSMISSION TIME ...............................................................................................21

8. RADIATED EMISSION TEST RESULTS...........................................................................22
8.1. TX RADIATED SPURIOUS EMISSION ......................................................................22

9. SETUP PHOTOS ...............................................................................................................30

Page 3 of 39
UL VERIFICATION SERVICES INC FORM NO: CCSUP4701I
47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888
This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc..

REPORT NO: 15U21269A DATE: AUGUST 3, 2015
FCC ID: XQC-WST712 IC: 9863B-WST712

4.3. MEASUREMENT UNCERTAINTY
Where relevant, the following measurement uncertainty levels have been estimated for tests
performed on the apparatus:

PARAMETER UNCERTAINTY
Conducted Disturbance, 0.15 to 30 MHz ±3.52 dB
Radiated Disturbance, 30 to 18000 MHz ±4.94 dB

Uncertainty figures are valid to a confidence level of 95%.

Page 6 of 39
UL VERIFICATION SERVICES INC FORM NO: CCSUP4701I
47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888
This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc..

REPORT NO: 15U21269A DATE: AUGUST 3, 2015
FCC ID: XQC-WST712 IC: 9863B-WST712

5. EQUIPMENT UNDER TEST

5.1. DESCRIPTION OF EUT

The EUT is a Wireless Sensor.

5.2. DESCRIPTION OF AVAILABLE ANTENNAS

The radio utilizes an PCB loop antenna, with a maximum gain of -15 dBi.

5.3. SOFTWARE AND FIRMWARE

The typical factory firmware installed in the EUT during testing was ESW1098-02-A01.HEX

The firmware installed in the EUT to allow continuous transmit during testing was
CEILING_v1.00.HEX

5.4. WORST-CASE CONFIGURATION AND MODE

The EUT was investigated in each of its three orthogonal axes. All radiated testing was
performed in the worse-case axis, which was found to be the “X-axis”. See photos for details.

5.5. MODIFICATIONS

No modifications were made during testing.

Page 7 of 39
UL VERIFICATION SERVICES INC FORM NO: CCSUP4701I
47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888
This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc..

REPORT NO: 15U21269A DATE: AUGUST 3, 2015
FCC ID: XQC-WST712 IC: 9863B-WST712

7. ANTENNA PORT TEST RESULTS

7.1. 20 dB AND 99% BW
LIMITS

FCC §15.231 (c)
The bandwidth of the emission shall be no wider than 0.25% of the center frequency for devices
operating above 70 MHz and below 900 MHz. For devices operating above 900 MHz, the
emission shall be no wider than 0.5% of the center frequency. Bandwidth is determined at the
points 20 dB down from the modulated carrier.

IC A1.1.3
For the purpose of Section A1.1, the 99% Bandwidth shall be no wider than 0.25% of the center
frequency for devices operating between 70-900 MHz. For devices operating above 900 MHz,
the emission shall be no wider than 0.5% of the center frequency.

TEST PROCEDURE

ANSI C63.10

The transmitter output is connected to the spectrum analyzer.

20dB Bandwidth: The RBW is set to 1% to 5% of OBW. The VBW is set to 3 times the RBW.
The sweep time is coupled. Bandwidth is determined at the points 20 dB down from the
modulated carrier.

99% Bandwidth: The RBW is set to 1% to 3% of the 99 % bandwidth. The VBW is set to 3 times
the RBW. The sweep time is coupled. The spectrum analyzer internal 99% bandwidth function
is utilized.

Page 11 of 39
UL VERIFICATION SERVICES INC FORM NO: CCSUP4701I
47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888
This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc..

REPORT NO: 15U21269A DATE: AUGUST 3, 2015
FCC ID: XQC-WST712 IC: 9863B-WST712

RESULTS

No non-compliance noted:

20dB Bandwidth
Frequency 20dB Bandwidth Limit Margin
(MHz) (kHz) (kHz) (kHz)
345 645 862.5 -217.5

99% Bandwidth
Frequency 99% Bandwidth Limit Margin
(MHz) (kHz) (kHz) (kHz)
345 645.25 862.5 -217.25

Page 12 of 39
UL VERIFICATION SERVICES INC FORM NO: CCSUP4701I
47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888
This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc..

REPORT NO: 15U21269A DATE: AUGUST 3, 2015
FCC ID: XQC-WST712 IC: 9863B-WST712

7.2. DUTY CYCLE
LIMITS

FCC §15.35 (c)
The measurement field strength shall be determined by averaging over one complete pulse
train, including blanking intervals, as long as the pulse train does not exceed 0.1 seconds. As an
alternative (provided the transmitter operates for longer than 0.1 seconds) or in cases where the
pulse train exceeds 0.1 seconds, the measured field strength shall be determined from the
average absolute voltage during a 0.1 second interval during which the field strength is at its
maximum value. The exact method of calculating the average field strength shall be submitted
with any application for certification or shall be retained in the measurement data file for
equipment subject to notification or verification.

TEST PROCEDURE

The transmitter output is connected to a spectrum analyzer or radiated field strength. The RBW
is set to 1MHz and the VBW is set to 1MHz. The sweep time is coupled and the span is set to 0
Hz. The number of pulses is measured and calculated in a 100 ms scan.

CALCULATION

Average Reading = Peak Reading (dBuV/m) + 20log (Duty Cycle), Where Duty Cycle is
(# of long pulses * long pulse width) + (# of short pulses * short pulse width) / 100 or T

RESULTS

No non-compliance noted:

One Long Pulse # of Short # of Duty 20*Log
Period Width Long Width Short Cycle Duty Cycle
(ms) (ms) Pulses (ms) Pulses (dB)
100 0.28 11 0.14 42 0.090 -20.95

Page 15 of 39
UL VERIFICATION SERVICES INC FORM NO: CCSUP4701I
47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888
This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc..

REPORT NO: 15U21269A DATE: AUGUST 3, 2015
FCC ID: XQC-WST712 IC: 9863B-WST712

8. RADIATED EMISSION TEST RESULTS
8.1. TX RADIATED SPURIOUS EMISSION
LIMITS

FCC §15.231 (b)
IC A1.1.2
In addition to the provisions of § 15.205, the field strength of emissions from Intentional
radiators operated under this section shall not exceed the following:

Fundamental Field Strength of Field Strength of
Frequency Fundamental Frequency Spurious Emissions
(MHz) (microvolts/meter) (microvolts/meter)
______________________________________________________________

40.66 - 40.70 2,250 225
70 - 130 1,250 125
130 - 174 1,250 to 3,750 1 125 to 375 1
174 - 260 3,750 375
1
260 - 470 3,750 to 12,500 375 to 1,250 1
Above 470 12,500 1,250
_______________________________________________________________
1 Linear interpolation

§15.205 (a) Except as shown in paragraph (d) of this section, only spurious emissions are
permitted in any of the frequency bands listed below:

MHz MHz MHz GHz
0.090 - 0.110 16.42 - 16.423 399.9 - 410 4.5 - 5.15
1
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 - 2483.5 - 2500 17.7 - 21.4
8.37625 - 8.38675 156.52525 2655 - 2900 22.01 - 23.12
8.41425 - 8.41475 156.7 - 156.9 3260 - 3267 23.6 - 24.0
12.29 - 12.293 162.0125 - 167.17 3332 - 3339 31.2 - 31.8
12.51975 - 12.52025 167.72 - 173.2 3345.8 - 3358 36.43 - 36.5
12.57675 - 12.57725 240 - 285 3600 - 4400 ( 2)
13.36 – 13.41 322 - 335.4

Page 22 of 39
UL VERIFICATION SERVICES INC FORM NO: CCSUP4701I
47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888
This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc..

REPORT NO: 15U21269A DATE: AUGUST 3, 2015
FCC ID: XQC-WST712 IC: 9863B-WST712

1 Until February 1, 1999, this restricted band shall be 0.490-0.510 MHz.
2 Above 38.6

§15.205 (b) Except as provided in paragraphs (d) and (e), the field strength of emissions
appearing within these frequency bands shall not exceed the limits shown in Section 15.209. At
frequencies equal to or less than 1000 MHz, compliance with the limits in Section 15.209 shall
be demonstrated using measurement instrumentation employing a CISPR quasi peak detector.
Above 1000 MHz, compliance with the emission limits in Section 15.209 shall be demonstrated
based on the average value of the measured emissions. The provisions in Section 15.35 apply
to these measurements.

§15.209 (a) Except as provided elsewhere in this Subpart, the emissions from an intentional
radiator shall not exceed the field strength levels specified in the following table:

Frequency Field Strength Measurement Distance
(MHz) (microvolts/meter) (meters)
______________________________________________________________

30 - 88 100 ** 3
88 - 216 150 ** 3
216 - 960 200 ** 3
Above 960 500 3
_______________________________________________________________
** Except as provided in paragraph (g), fundamental emissions from intentional radiators
operating under this Section shall not be located in the frequency bands 54 72 MHz, 76 88 MHz,
174 216 MHz or 470 806 MHz. However, operation within these frequency bands is permitted
under other sections of this Part, e.g., Sections 15.231 and 15.241.

§15.209 (b) In the emission table above, the tighter limit applies at the band edges.

Page 23 of 39
UL VERIFICATION SERVICES INC FORM NO: CCSUP4701I
47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888
This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc..

REPORT NO: 15U21269A DATE: AUGUST 3, 2015
FCC ID: XQC-WST712 IC: 9863B-WST712

TEST PROCEDURE

The EUT is placed on a non-conducting table 80 cm above the ground plane for below 1GHz
and 150 cm for above 1GHz. The antenna to EUT distance is 3 meters. The EUT is configured
in accordance with ANSI C63.10. The EUT is set to transmit in a continuous mode.

For measurements below 1 GHz the resolution bandwidth is set to 100 kHz for peak detection
measurements or 120 kHz for quasi-peak detection measurements. Peak detection is used
unless otherwise noted as quasi-peak.

For measurements above 1 GHz the resolution bandwidth is set to 1 MHz, then the video
bandwidth is set to 1 MHz for peak measurements and 10 Hz for average measurements.

The frequency range of interest is monitored at a fixed antenna height and EUT azimuth. The
EUT is rotated through 360 degrees to maximize emissions received. The antenna is scanned
from 1 to 4 meters above the ground plane to further maximize the emission. Measurements are
made with the antenna polarized in both the vertical and the horizontal positions.

RESULTS

No non-compliance noted:

Page 24 of 39
UL VERIFICATION SERVICES INC FORM NO: CCSUP4701I
47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888
This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc..

REPORT NO: 15U21269A DATE: AUGUST 3, 2015
FCC ID: XQC-WST712 IC: 9863B-WST712

Radiated Emissions

Trace Markers
Trace Markers

Marker Frequency Meter Det AF T243 Amp/Cbl (dB) Corrected QPk Limit Margin Azimuth Height Polarity
(MHz) Reading (dB/m) Reading (dBuV/m) (dB) (Degs) (cm)
(dBuV) (dBuV/m)
1 30.17 33.97 Pk 20.6 -28.8 25.77 40 -14.23 0-360 199 H
2 92.9213 51.3 Pk 8.3 -28 31.6 43.52 -11.92 0-360 399 H
3 187.0375 47.91 Pk 11.3 -27 32.21 43.52 -11.31 0-360 399 H
4 345 106.7 Pk 14.2 -25.7 95.2 0-360 101 H
5 345 91.7 Pk 14.2 -25.7 80.2 0-360 299 V
7 690 61.92 Pk 20.1 -24.5 57.52 0-360 101 H
6 690 43.82 Pk 20.1 -24.5 39.42 46.02 -6.6 0-360 101 V

Pk - Peak detector

Radiated Emissions

Frequency Meter Det AF T243 Amp/Cbl Corrected Limit Margin Azimuth Height Polarity
(MHz) Reading (dB/m) (dB) Reading (dBuV/m) (dB) (Degs) (cm)
(dBuV) (dBuV/m)
345 91.61 Pk 14.2 -25.7 80.11 97.26 -17.15 28 305 V
345 Av 59.16 77.26 -18.1 28 305 V
345.0005 106.65 Pk 14.2 -25.7 95.15 97.26 -2.11 290 101 H
345.0043 Av 74.2 77.26 -3.06 290 101 H
690 61.81 Pk 20.1 -24.5 57.41 77.26 -19.85 288 102 H
690 Av 36.46 57.26 -20.8 288 102 H
690 43.99 Pk 20.1 -24.5 39.59 77.26 -37.67 202 101 V
690 Av 18.64 57.26 -38.62 202 101 V

Note: average reading = peak reading + DCCF

* Average Reading = Peak Reading (dBuV/m) + 20log (Duty Cycle), Where Duty Cycle is
(# of long pulses * long pulse width) + (# of short pulses * short pulse width) / 100 or T
Refer to section 7.2 for duty cycle factor calculation(-20.95dB)

Page 26 of 39
UL VERIFICATION SERVICES INC FORM NO: CCSUP4701I
47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888
This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc..

REPORT NO: 15U21269A DATE: AUGUST 3, 2015
FCC ID: XQC-WST712 IC: 9863B-WST712

Radiated Emissions
Frequency Meter Det AF T345 Port 1 Corrected Class B Avg Margin Corrected Class B Pk Margin Azimuth Height Polarity
(GHz) Reading (dB/m) Factors Avg Limit (dB) Peak Limit (dB) (Degs) (cm)
(dBuV) Reading (dBuV/m) Reading (dBuV/m)
(dBuV/m) (dBuV/m)
1.725 60.28 Pk 30 -32.6 36.73 57.26 -20.53 57.68 77.26 -19.58 196 223 H

1.725 51.39 Pk 30 -32.6 27.84 57.26 -29.42 48.79 77.26 -28.47 239 369 V

2.76 60.34 Pk 32.6 -31.6 40.39 54 -13.61 61.34 74 -12.66 182 103 H

2.76 52.76 Pk 32.6 -31.6 32.81 54 -21.19 53.76 74 -20.24 36 148 V

3.105 69.18 Pk 32.7 -30.9 50.03 57.26 -7.23 70.98 77.26 -6.28 355 325 H

3.105 57.99 Pk 32.7 -30.9 38.84 57.26 -18.42 59.79 77.26 -17.47 51 105 V

3.45 63.24 Pk 33.3 -31.1 44.49 57.26 -12.77 65.44 77.26 -11.82 334 114 H

3.45 60.58 Pk 33.3 -31.1 41.83 57.26 -15.43 62.78 77.26 -14.48 292 368 V

3.795 65.14 Pk 33.3 -30.6 46.89 54 -7.11 67.84 74 -6.16 330 140 H

3.795 62.79 Pk 33.3 -30.6 44.54 54 -9.46 65.49 74 -8.51 285 386 V

4.14 71.82 Pk 33.3 -30.4 53.77 54 -0.23 73.72 74 -0.28 138 119 H

4.14 68.91 Pk 33.3 -30.4 50.86 54 -3.14 71.81 74 -2.19 275 398 V

4.485 71.65 Pk 34 -30.2 54.5 57.26 -2.76 75.45 77.26 -1.81 155 101 H

4.485 65.9 Pk 34 -30.2 48.75 57.26 -8.51 69.7 77.26 -7.56 196 387 V

4.83 60.61 Pk 34.3 -29.5 44.46 54 -9.54 65.41 74 -8.59 311 102 H

4.83 57.03 Pk 34.3 -29.5 40.88 54 -13.12 61.83 74 -12.17 202 393 V

* Average Reading = Peak Reading (dBuV/m) + 20log (Duty Cycle), Where Duty Cycle is
(# of long pulses * long pulse width) + (# of short pulses * short pulse width) / 100 or T

Page 28 of 39
UL VERIFICATION SERVICES INC FORM NO: CCSUP4701I
47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888
This report shall not be reproduced except in full, without the written approval of UL Verification Services Inc..

Document Created: 2015-08-04 14:10:25
Document Modified: 2015-08-04 14:10:25

© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC