WARNING:pdfminer.pdfpage:The PDF <_io.BufferedReader name='/Volumes/Scratch/Incoming/eg-scratch/6160624.pdf'> contains a metadata field indicating that it should not allow text extraction. Ignoring this field and proceeding. Use the check_extractable if you want to raise an error in this case OTA TEST REPORT Applicant Espressif System (Shanghai) Co.,Ltd Product ESP32-C3-WROOM-02 Model ESP-ANT B Report No. Y2102A0260-T3 Issue Date March 9, 2021 TA Technology (Shanghai) Co., Ltd. tested the above equipment in accordance with the requirements in ANSI/IEEE Std 149-2008. The test results show that the equipment tested is capable of demonstrating compliance with the requirements as documented in this report. Preparedby:PengTao Approvedby:KaiXu TA Technology (Shanghai) Co., Ltd. No.145,JintangRd,TangzhenIndustryPark,PudongShanghai,China TEL:+8602150791141/2/3 FAX:+8602150791141/2/38000 OTA Test Report Report No: Y2102A0260-T3 TABLE OF CONTENTS 1. Test Laboratory .............................................................................................................................. 3 1.1. 1.2. 1.3. 1.4. Notes of the Test Report ................................................................................................... 3 Test facility ........................................................................................................................ 3 Testing Location ................................................................................................................ 3 Laboratory Environment .................................................................................................... 4 2. General Description of Equipment under Test ............................................................................... 5 2.1. Applicant and Manufacturer Information ............................................................................ 5 2.2. General information ........................................................................................................... 5 2.3. 2.4. 2.5. Test Date ........................................................................................................................... 5 Receiving Date .................................................................................................................. 5 Applied Standards ............................................................................................................. 6 3. Test Conditions .............................................................................................................................. 7 3.1. 3.2. Test Configuration ............................................................................................................. 7 Test Measurement ............................................................................................................. 7 4. Test Results ................................................................................................................................... 8 4.1. Gain and Efficiency ............................................................................................................ 8 5. Equipment List ............................................................................................................................... 9 ANNEX A 3-D Pattern Plots ................................................................................................................... 10 ANNEX BThe EUT Appearance and Test Configuration ...................................................................... 12 B.1 EUT Appearance ................................................................................................................... 12 B.2 Test Configuration ................................................................................................................. 13 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 2 of 13 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: Y2102A0260-T3 1. Test Laboratory 1.1. Notes of the Test Report This report shall not be reproduced in full or partial, without the written approval of TA technology
(shanghai) co., Ltd. The results documented in this report apply only to the tested sample, under the conditions and modes of operation as described herein .Measurement Uncertainties were not taken into account and are published for informational purposes only. This report is written to support regulatory compliance of the applicable standards stated above. 1.2. Test facility A2LA (Certificate Number: 3857.01) TA Technology (Shanghai) Co., Ltd. has been listed by American Association for Laboratory Accreditation to perform measurement. 1.3. Testing Location Company:
TA Technology (Shanghai) Co., Ltd. Address:
No.145, Jintang Rd, Tangzhen Industry Park, Pudong Shanghai, China City:
Shanghai Post code:
201201 Country:
P. R. China Contact:
Xu Kai Telephone:
+86-021-50791141/2/3 Fax:
Website:
E-mail:
+86-021-50791141/2/3-8000 http://www.ta-shanghai.com xukai@ta-shanghai.com TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 3 of 13 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: Y2102A0260-T3 1.4. Laboratory Environment Temperature Relative humidity Shield effect Ground resistance Min. =19Max. = 25 Min. =40%Max. =72%
0.7-6GHz
> 100dB
<0.5 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 4 of 13 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: Y2102A0260-T3 2. General Description of Equipment under Test 2.1. Applicant and Manufacturer Information Applicant Name Espressif System (Shanghai) Co.,Ltd Applicant address Suite 204 Block 2, 690 Bibo Road, Zhang Jiang Hi-Tech Park, Shanghai, China Manufacturer Name Espressif System (Shanghai) Co.,Ltd Manufacturer address Suite 204 Block 2, 690 Bibo Road, Zhang Jiang Hi-Tech Park, Shanghai, China 2.2. General information Product Name:
ESP32-C3-WROOM-02 EUT Description Model HW Version:
SW Version:
ESP-ANT B ESP32-C3-WROOM-02 V1 esp32c3_phy_20210225_no_sleep_and_ampdu Antenna Type:
PCB Antenna Antenna Manufacturer:
Espressif System (Shanghai) Co.,Ltd 2402MHz ~ 2502MHz Test Frequency:
Note: The EUT is sent from the applicant to TA and the information of the EUT is declared by the applicant. All indications of Pass/Fail in this report are opinions expressed by TA Technology (Shanghai) Co., Ltd. based on interpretations and/or observations of test results. Measurement Uncertainties were not taken into account and are published for informational purposes only. Test lab. of the antenna gain and radiation pattern measurement: TA Technology (Shanghai) Co., Ltd. 2.3. Test Date The test is performed from February 25, 2021 to March 4, 2021. 2.4. Receiving Date The sample was received on February 25, 2021. TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 5 of 13 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: Y2102A0260-T3 2.5. Applied Standards According to the specifications of the manufacturer, it must comply with the requirements of the following standards:
Test Method: ANSI/IEEE Std 149-2008 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 6 of 13 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: Y2102A0260-T3 3. Test Conditions 3.1. Test Configuration Great-Circle-Cut method is used to measure the antenna 3D GAIN of EUT in OTA qualified anechoic chamber. Equipment Under Test (EUT) geometry centre vertical projection at the centre of platform, the distance from EUT to measurement antenna is 5m. 3.2. Test Measurement Spherical coordinate system Note: Theta is from 0~180 degree. Phi is from 0~360. Rotate the EUT and record the Data, the Figure 1 Test coordinate system step of rotation is 15 degree. Test Setup TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 7 of 13 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: Y2102A0260-T3 4. Test Results 4.1. Gain and Efficiency Model Test State Frequency
(MHz) Efficiency
(dB) Efficiency
(%) Gain
(dBi) Directivity
(dBi) Note ESP-ANT B Free Space 2402 2407 2412 2417 2422 2427 2432 2437 2442 2447 2452 2457 2462 2467 2472 2477 2482 2487 2492 2497 2502
-1.98
-1.76
-1.70
-1.60
-1.61
-1.77
-1.83
-1.73
-1.77
-1.79
-1.75
-1.76
-1.68
-1.95
-2.07
-1.87
-1.94
-1.98
-1.82
-1.72
-1.75 63.44 66.66 67.68 69.11 68.95 66.48 65.54 67.21 66.46 66.25 66.81 66.73 67.91 63.90 62.14 65.00 63.96 63.35 65.80 67.34 66.79 2.73 2.73 3.16 2.92 2.79 2.29 2.54 2.46 2.56 2.69 2.95 2.96 2.99 3.17 3.08 3.18 3.26 3.37 3.35 3.17 3.18 4.70 4.50 4.85 4.53 4.41 4.06 4.37 4.19 4.34 4.48 4.70 4.71 4.67 5.11 5.14 5.05 5.20 5.35 5.17 4.88 4.94 15 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 8 of 13 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: Y2102A0260-T3 5. Equipment List Type of Equipment Manufacture Model Number S/N Calibration Date Expiration Time Network Analyzer Key sight E5071B MY42404014 2020-05-17 2021-05-16 Switch Control System Dual polarized horn antenna ETS ETS Software ETS-lindgren 7006/7001 00059957/MY 42001152 N/A N/A 3164-04 00062743 2020-04-14 2021-04-13 EMQ-100 Pattern Measurement software 1.09 N/A N/A TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 9 of 13 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: Y2102A0260-T3 ANNEX A 3-D Pattern Plots Azimuth = 0.0 Elevation = 0.0 Roll = 0.0 Azimuth = 89.6 Elevation = 2.2 Roll = -91.9 Azimuth = 11.3 Elevation = -85.6 Roll = 98.6 Azimuth = -0.2 Elevation = 5.1 Roll = -4.5 Total Total Total Y Z Z X X Y Total Y Z X Y Z X
) B d
e s n o p s e R
) B d
e s n o p s e R
) B d
e s n o p s e R
) B d
e s n o p s e R 4 0
-4
-8
-12
-16 4 0
-4
-8
-12
-16 4 0
-4
-8
-12
-16 4 0
-4
-8
-12
-16
) m B d
r e w o P 60 90 120 Cut1 300 270 240 30 0 330 150 180 Angle (?
210 Max: 3 Min: -6 Scale: 1/div 2502 MHz 2402 MHz 2407 MHz 2412 MHz 2417 MHz 2422 MHz 2427 MHz 2432 MHz 2437 MHz 2442 MHz 2447 MHz 2452 MHz 2457 MHz 2462 MHz 2467 MHz 2472 MHz 2477 MHz 2482 MHz 2487 MHz 2492 MHz 2497 MHz TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 10 of 13 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: Y2102A0260-T3
) m B d
r e w o P 60 90 120
) m B d
r e w o P 60 90 120 Cut2 300 270 240 Cut3 300 270 240 30 0 330 150 210 180 Angle (?
30 0 330 150 180 Angle (?
210 Max: 4 Min: -12 Scale: 2/div Max: 4 Min: -10 Scale: 2/div 2502 MHz 2402 MHz 2407 MHz 2412 MHz 2417 MHz 2422 MHz 2427 MHz 2432 MHz 2437 MHz 2442 MHz 2447 MHz 2452 MHz 2457 MHz 2462 MHz 2467 MHz 2472 MHz 2477 MHz 2482 MHz 2487 MHz 2492 MHz 2497 MHz 2502 MHz 2402 MHz 2407 MHz 2412 MHz 2417 MHz 2422 MHz 2427 MHz 2432 MHz 2437 MHz 2442 MHz 2447 MHz 2452 MHz 2457 MHz 2462 MHz 2467 MHz 2472 MHz 2477 MHz 2482 MHz 2487 MHz 2492 MHz 2497 MHz 2402MHz ~2502 MHz Wi-Fi 2.4G 3D Gain TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 11 of 13 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: Y2102A0260-T3 ANNEX BThe EUT Appearance and Test Configuration B.1 EUT Appearance Picture 1 Constituents of EUT TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 12 of 13 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: Y2102A0260-T3 B.2 Test Configuration Picture 2 Test Setup
******END OF REPORT ******
TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 13 of 13 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd.