Test Report DXX

FCC ID: SS4EF401

Test Report

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FCCID_3951130

TEST REPORT DT&C Co., Ltd. m Dt &‘ 42, Yurim—ro, 154Beon—gil, Cheoin—gu, Yongin—si, Gyeonggi—do, Korea, 17042 Tel : 031—321—2664, Fax : 031—321—1664 1. Report No : DRTFCC1807—0185 2. Customer * Name : Bluebird Inc. * Address : (Dogok—dong, SEI Tower 13,14) 39, Eonjuro30—gil, Gangnam—gu, Seoul, South Korea 3. Use of Report : FCC Original Grant 4. Product Name / Model Name : Enterprise Full Touch Handheld Computer / EF401 FCC ID : SS4EF401 5. Test Method Used : ANSI C63.10—2013 Test Specification : FCC Part 15.225 6. Date of Test : 2018.07.04 ~ 2018.07.17 7. Testing Environment : Refer to appended test report. 8. Test Result : Refer to the attached test result. Tested by Reviewed by Affirmation| c fiz' Name : Jaejin Lee Name : GeunKi Son The test results presented in this test report are limited only to the sample supplied by applicant and the use of this test report is inhibited other than its purpose. This test report shall not be reproduced except in full, without the written approval of DT&C Co., Ltd. 2018 . 07 . 24 . DT&C Co., Ltd. If this report is required to confirmation of authenticity, please contact to report@dtnc.net TRF—RF—203(08)170530 Prohibits the copying and re—issue of this report without DT&C approval. Pages: 1/ 18

Report No.: DRTFCC1807-0185 FCC ID: SS4EF401 Test Report Version Test Report No. Date Description DRTFCC1807-0185 Jul. 24, 2018 Initial issue TRF-RF-203(08)170530 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 2 / 18

Report No.: DRTFCC1807-0185 FCC ID: SS4EF401 CONTENTS 1. General Information .................................................................. 4 1.1. Testing Laboratory ................................................................. 4 1.2. Testing Environment .............................................................. 4 1.3. Measurement Uncertainty ..................................................... 4 1.4. Details of Applicant ................................................................ 5 1.5. Description of EUT ................................................................ 5 1.6. EUT Capabilities.................................................................... 5 2. Information about test items .................................................... 6 2.1 Test mode............................................................................... 6 2.2 Tested frequency .................................................................... 6 2.3 EMI Suppression Device(s)/Modifications .............................. 6 3. Antenna requirements .............................................................. 6 4. Test report ................................................................................. 7 4.1 Summary of tests ................................................................... 7 4.2 Transmitter requirements........................................................ 8 4.2.1 20dB bandwidth ................................................................. 8 4.2.2 In-band emissions .............................................................. 9 4.2.3 Out-of-band emissions ......................................................11 4.2.4 Frequency Stability........................................................... 13 4.2.5 AC Line Conducted Emissions ......................................... 14 APPENDIX ................................................................................... 17 TRF-RF-203(08)170530 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 3 / 18

Report No.: DRTFCC1807-0185 FCC ID: SS4EF401 1. General Information 1.1. Testing Laboratory DT&C Co., Ltd. The 3 m test site and conducted measurement facility used to collect the radiated data are located at the 42, Yurim-ro, 154beon-gil, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea 17042. The test site comply with the requirements of § 2.948 according to ANSI C63.4-2014. - FCC MRA Accredited Test Firm No. : KR0034 www.dtnc.net Telephone : + 82-31-321-2664 FAX : + 82-31-321-1664 1.2. Testing Environment Ambient Condition ▪ Temperature +22 ℃ ~ +25 ℃ ▪ Relative Humidity 43 % ~ 55 % 1.3. Measurement Uncertainty The measurement uncertainties shown below were calculated in accordance with requirements of ANSI C 63.4- 2014. All measurement uncertainty values are shown with a coverage factor of k = 2 to indicate a 95 % level of confidence. Parameter Measurement uncertainty AC conducted emission 2.4 dB (The confidence level is about 95 %, k = 2) Radiated Disturbance 5.1 dB (The confidence level is about 95 %, k = 2) (Below 1 GHz) TRF-RF-203(08)170530 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 4 / 18

Report No.: DRTFCC1807-0185 FCC ID: SS4EF401 1.4. Details of Applicant Applicant : Bluebird Inc. Address : (Dogok-dong, SEI Tower 13,14) 39, Eonjuro30-gil, Gangnam-gu, Seoul, South Korea Contact person : Yongsik Jang 1.5. Description of EUT FCC Equipment Class Low Power Communications Device Transmitter(DXX) EUT Enterprise Full Touch Handheld Computer Model Name EF401 Add Model Name NA Hardware Version Rev0.2 Software Version R1.12 Serial Number Identical prototype Power Supply DC 3.8 V Frequency Band 13.56 MHz Modulation Type ASK Channel(s) 1 Antenna type Loop Antenna 1.6. EUT Capabilities This EUT contains the following capabilities: 802.11b/g/n WLAN(2.4GHz), 802.11a/n/ac WLAN(5GHz), Bluetooth(BDR, EDR, LE), NFC TRF-RF-203(08)170530 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 5 / 18

Report No.: DRTFCC1807-0185 FCC ID: SS4EF401 2. Information about test items 2.1 Test mode Test mode1 Continuous transmitting mode 2.2 Tested frequency Channel TX Frequency(MHz) Lowest 13.56 Middle - Highest - 2.3 EMI Suppression Device(s)/Modifications EMI suppression device(s) added and/or modifications made during testing → None 3. Antenna requirements “An intentional radiator antenna shall be designed to ensure that no antenna other than that furnished by the responsible party can be used with the device. The use of a permanently attached antenna or of an antenna that uses a unique coupling to the intentional radiator shall be considered sufficient to comply with the provisions of this section.” The internal antenna is attached on the main PCB using the special spring tension. (Refer to Internal Photo file.) Therefore this E.U.T Complies with the requirement of §15.203 TRF-RF-203(08)170530 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 6 / 18

Report No.: DRTFCC1807-0185 FCC ID: SS4EF401 4. Test report 4.1 Summary of tests FCC part RSS Test Status Parameter Limit section(s) section(s) condition Note 1 2.1049 - 20 dB Bandwidth - C RSS-Gen - Occupied Bandwidth - NA [ 6.7 ] RSS-210 15,848 ㎶/m @ 30 m 15.225 (a) In-Band Emissions C [ B6(a) ] 13.553 – 13.567 MHz Radiated 334 ㎶/m @ 30 m RSS-210 15.225 (b) In-Band Emissions 13.410 – 13.553 MHz C [ B6(b) ] 13.567 – 13.710 MHz 106 ㎶/m @ 30 m RSS-210 15.225 (c) In-Band Emissions 13.110 – 13.410 MHz C [ B6(c) ] 13.710 – 14.010 MHz RSS-210 Emissions outside of the specified 15.225 (d) [ B6(d) ] band (13.110-14.010 MHz) must Out-of Band Emissions C 15.209 RSS-GEN meet the radiated limits detailed in [8.9] 15.209 Temp & RSS-210 15.225 (e) Frequency Stability ±0.01 % of operating frequency Humid Test C [ B6 ] Chamber RSS-Gen AC Conducted AC Line 15.207 FCC Part 15.207 C [ 8.8 ] Emissions Conducted 15.203 - Antenna Requirements FCC Part 15.203 - C Note 1: C=Comply NC=Not Comply NT=Not Tested NA=Not Applicable Note 2: For radiated emission tests below 30 MHz were performed on semi-anechoic chamber which is correlated with OATS. TRF-RF-203(08)170530 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 7 / 18

Report No.: DRTFCC1807-0185 FCC ID: SS4EF401 4.2 Transmitter requirements 4.2.1 20dB bandwidth - Procedure: The 20 dB Bandwidth is measured with a spectrum analyzer connected via a receive antenna placed near the EUT while the EUT is operating in transmission mode. And spectrum analyzer setting use following test procedure of ANCSI C63.10-2013 – Section 6.9.2. 1. Center frequency = EUT channel center frequency 2. Span = 2 ~ 5 times the OBW 3. RBW = 1 % ~ 5 % OBW 4. VBW ≥ 3 x RBW 5. Detector = Peak 6. Trace = Max hold 7. The trace was allowed to stabilize 8. Determine the reference value = Set the spectrum analyzer marker to the highest level of the displayed trace 9. Using the marker-delta function of the instrument, determine the “−xx dB down amplitude” using [(reference value) − xx]. 10. Reset the marker-delta function and move the marker to the other side of the emission until the delta marker amplitude is at the same level as the reference marker amplitude. The marker-delta frequency reading at this point is the specified emission bandwidth. - Measurement Data: Comply - Minimum Standard: NA TRF-RF-203(08)170530 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 8 / 18

Report No.: DRTFCC1807-0185 FCC ID: SS4EF401 4.2.2 In-band emissions - Test Configuration Below 30MHz - Procedure: The radiated emission was tested according to the section 6.4 of the ANSI C63.10-2013. The EUT was placed on a 0.8 m high non-conductive table and it was placed at 3m distance from the antenna. Measurements were performed for each of the three antenna orientations. (ie. parallel, perpendicular, and ground-parallel) Also, measurements were performed with the EUT oriented in 3 orthogonal axis and rotated 360 degrees to determine worst-case orientation for maximum emissions. RBW = As specified in below table, VBW ≥ 3 x RBW, Sweep = Auto, Detector = Peak Trace mode = Max Hold until the trace stabilizes. - Minimum Standard: Part 15.225(a), (b), (c) & RSS-210 [ B6(a), (b), (c) ] Limit at 30 m measurement distance Frequency Band [MHz] [uV/m] [dBuV/m] 13.553-13.567 15,848 84.00 13.410-13.553 334 50.47 13.567-13.710 13.110-13.410 106 40.51 13.710-14.010 TRF-RF-203(08)170530 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 9 / 18

Report No.: DRTFCC1807-0185 FCC ID: SS4EF401 - Measurement Data: Tested Frequency : 13.56 MHz Measurement Distance : 3 Meters Test Field Field Reading Frequency Freq. EUT ANT T.F Strength Strength Limit Margin Level Band [MHz] Axis. (Note 1) [dB/m] @3 m @30 m [dBuV/m] [dB] [dBuV] [MHz] [dBuV/m] [dBuV/m] 13.110 ~ 13.410 13.346 Z P 16.90 19.22 36.12 -3.88 40.50 44.38 13.410 ~ 13.553 13.553 Z P 25.40 19.22 44.62 4.62 50.50 45.88 13.553 ~ 13.567 13.559 Z P 31.60 19.22 50.82 10.82 84.00 73.18 13.567 ~ 13.710 13.671 Z P 15.10 19.22 34.32 -5.68 50.50 56.18 13.710 ~ 14.010 13.771 Z P 14.90 19.22 34.12 -5.88 40.50 46.38 Note 1. Loop antenna orientation “P”: Parallel, “V”: perpendicular, “G”: ground-parallel Note 2. This test item was performed at 3 m and the data were extrapolated to the specified measurement distance of 30 m using the square of an inverse linear distance extrapolation factor (40 dB/decade) as specified in §15.31(f)2. ▪ Extrapolation Factor = 20 log10(30/3)2 = 40 dB Note 3. All data were recorded using a spectrum analyzer employing a peak detector. If PK results were meet Quasi-peak limit, Quasi-peak measurements were omitted. Note 4. Sample Calculation. Margin = Limit – Field Strength @ 30 m / Field Strength @ 30 m = Field Strength @ 3 m – 40 dB Field Strength @ 3 m = Reading + T.F / T.F = AF + CL Where, T.F = Total Factor, AF = Antenna Factor, CL = Cable Loss TRF-RF-203(08)170530 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 10 / 18

Report No.: DRTFCC1807-0185 FCC ID: SS4EF401 4.2.3 Out-of-band emissions - Test configuration Below 30MHz 30MHz ~ 1GHz - Procedure: The radiated emission was tested according to the section 6.4, 6.5 of the ANSI C63.10-2013. The EUT was tested from 9 kHz up to the 1 GHz excluding the band 13.110-14.010 MHz. A The EUT was placed on a 0.8 m high non-conductive table and it was placed at 3m distance from the antenna. For measurements below 30MHz were performed for each of the three antenna orientations. (ie. parallel, perpendicular, and ground-parallel) For measurements above 30MHz were performed for each of the both horizontal and vertical polarizations. Also, measurements were performed with the EUT oriented in 3 orthogonal axis and rotated 360 degrees to determine worst-case orientation for maximum emissions. RBW = As specified in below table, VBW ≥ 3 x RBW, Sweep = Auto, Detector = Peak Trace mode = Max Hold until the trace stabilizes. - Minimum Standard: Part 15.209, 225(d) & RSS-210[B6(d)], RSS-GEN[8.9] ▪ FCC Part 15.209(a): Frequency Field Strength Measurement Distance [MHz] [uV/m] [Meters] 0.009 ~ 0.490 2400/F(kHz) 300 0.490 ~ 1.705 24000/F(kHz) 30 1.705 ~ 30 30 30 30 ~ 88 100 ** 3 88 ~ 216 150 ** 3 216 ~ 960 200 ** 3 Above 960 200 3 ** Except as provided in 15.209(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. 15.231 and 15.241. ▪ FCC Part 15.209(b): In the emission table above, the tighter limit applies at the band edges. TRF-RF-203(08)170530 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 11 / 18

Report No.: DRTFCC1807-0185 FCC ID: SS4EF401 - Measurement Data: Tested Frequency : 13.56 MHz Measurement Distance : 3 Meters Distance Field Frequency EUT ANT Reading T.F Limit Margin factor Strength [MHz] Axis. (Note 1) [dBuV] [dB/m] [dBuV/m] [dB] [dB] [dBuV/m] 0.543 Z P 20.7 18.65 40 -0.65 32.9 33.55 9.310 Z P 13.1 19.33 40 -7.57 29.5 37.07 20.060 Z P 12.3 19.66 40 -8.04 29.5 37.54 27.160 Z P 11.4 20.39 40 -8.21 29.5 37.71 31.091 Z V 35.8 -16.52 NA 19.28 40 20.72 148.459 Z V 32.3 -13.73 NA 18.57 43.5 24.93 447.816 Z V 25.8 -7.71 NA 18.09 46 27.91 937.516 Z H 22.2 3.32 NA 25.52 46 20.48 - - - - - - - - - Note 1. Loop antenna orientation (30 MHz Below) “P”= Parallel, “V”= perpendicular, “G”= ground-parallel Bilog antenna polarization (30 MHz above) “H”= Horizontal, “V”= Vertical Note 2. All data were recorded using a spectrum analyzer employing a peak detector. If PK results were meet Quasi-peak limit, Quasi-peak measurements were omitted. Note 3. No other spurious and harmonic emissions were reported greater than listed emissions above table. Note 4. Sample calculation Margin = Limit – Field Strength Field Strength = Reading + T.F – Distance factor T.F = AF + CL – AG Distance factor = 20log(Measurement distance / The measured distance)2 Where, T.F = Total Factor, AF = Antenna Factor, CL = Cable Loss, AG = Amplifier Gain TRF-RF-203(08)170530 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 12 / 18

Report No.: DRTFCC1807-0185 FCC ID: SS4EF401 4.2.4 Frequency Stability - Procedure: Part 15.225 requires that devices operating in the 13.553 – 13.567 MHz shall maintain the carrier frequency within 0.01 % of the operating frequency over the temperature variation of -20 degrees to + 50 degrees C at normal supply voltage. - Measurement Data: Comply Operating Frequency : 13,560,000 Hz VOLTAGE POWER TEMP Frequency Freq. Dev. Deviation (%) (VDC) (℃) (Hz) (Hz) (%) 100% +20(ref) 13,559,211 -789 0.005819 100% -20 13,559,154 -846 0.006239 100% -10 13,559,213 -787 0.005804 100% 0 13,559,234 -766 0.005649 100% 3.80 +10 13,559,351 -649 0.004786 100% +20 13,559,211 -789 0.005819 100% +30 13,559,284 -716 0.005281 100% +40 13,559,443 -557 0.004108 100% +50 13,559,343 -657 0.004845 85% 3.23 +20 13,559,235 -765 0.005642 115% 4.37 +20 13,559,261 -739 0.005450 - Minimum Standard: Part 15. 225(e) & RSS-210 [B6] The frequency tolerance of the carrier signal shall be maintained within ±0.01 % of the operating frequency. TRF-RF-203(08)170530 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 13 / 18

Report No.: DRTFCC1807-0185 FCC ID: SS4EF401 4.2.5 AC Line Conducted Emissions - Test Requirements and limit For an intentional radiator that is designed to be connected to the public utility (AC) power line, the radio frequency voltage that is conducted back onto the AC power line on any frequency or frequencies, within the band 150 kHz to 30 MHz, shall not exceed the limits in the following table, as measured using a 50 μH/50 ohms line impedance stabilization network (LISN). Frequency Range Conducted Limit (dBuV) (MHz) Quasi-Peak Average 0.15 ~ 0.5 66 to 56 * 56 to 46 * 0.5 ~ 5 56 46 5 ~ 30 60 50 * Decreases with the logarithm of the frequency Compliance with this provision shall be based on the measurement of the radio frequency voltage between each power line (LINE and NEUTRAL) and ground at the power terminals. - Test Configuration See test photographs for the actual connections between EUT and support equipment. - Test Procedure 1. The EUT is placed on a wooden table 80 cm above the reference ground plane. 2. The EUT is connected via LISN to a test power supply. 3. The measurement results are obtained as described below: 4. Detectors – Quasi Peak and Average Detector. - Measurement Data: Comply (refer to the next page) TRF-RF-203(08)170530 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 14 / 18

Report No.: DRTFCC1807-0185 FCC ID: SS4EF401 Measurement Data TRF-RF-203(08)170530 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 15 / 18

Report No.: DRTFCC1807-0185 FCC ID: SS4EF401 Measurement Data TRF-RF-203(08)170530 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 16 / 18

Report No.: DRTFCC1807-0185 FCC ID: SS4EF401 APPENDIX TEST EQUIPMENT FOR TESTS TRF-RF-203(08)170530 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 17 / 18

Report No.: DRTFCC1807-0185 FCC ID: SS4EF401 Cal.Date Next.Cal.Date Type Manufacturer Model (yy/mm/dd) (yy/mm/dd) S/N Spectrum Analyzer Agilent Technologies N9020A 17/12/26 18/12/26 MY50200828 Multimeter FLUKE 17B 17/12/26 18/12/26 26030065WS Signal Generator Rohde Schwarz SMBV100A 17/12/27 18/12/27 255571 Thermohygrometer BODYCOM BJ5478 17/09/11 18/09/11 N/A 17/09/07 18/09/07 Temp & Humi Test Chamber SJ Science SJ-TH-S50 U5542113 18/07/06 19/07/06 Loop Antenna Schwarzbeck FMZB1513 18/01/30 20/01/30 1513-128 BILOG ANTENNA Schwarzbeck VULB 9168 18/03/26 20/03/26 9168-0819 PreAmplifier tsj MLA-10K01-B01-27 18/01/11 19/01/11 2005354 EMI Test Receiver Rohde Schwarz ESW44 17/08/21 18/08/21 101645 EMI Test Receiver Rohde Schwarz ESCI7 18/02/12 19/02/12 100910 PULSE LIMITER Rohde Schwarz ESH3-Z2 17/09/29 18/09/29 101333 LISN SCHWARZBECK NNLK 8121 18/03/20 19/03/20 06183 Cable HUBER+SUHNER SUCOFLEX 17/12/22 18/12/22 C-1 Cable HUBER+SUHNER SUCOFLEX 17/12/22 18/12/22 C-2 Cable HUBER+SUHNER SUCOFLEX 17/12/22 18/12/22 C-3 Cable HUBER+SUHNER SUCOFLEX 17/12/22 18/12/22 C-4 Note1: The measurement antennas were calibrated in accordance to the requirements of ANSI C63.5-2017. Note2: The cable is not a regular calibration item, so it has been calibrated by DT&C itself. TRF-RF-203(08)170530 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 18 / 18


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Document Modified: 2019-09-11 13:20:27
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