2ADWN7197-48GY7197-48GY/DSBT077A-C

7197-48GY/DSBT077A-C

Digiview Technology Limited 2021.03.16 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: 7197-48GY/DSBT077A-C Trademark: N/A MODEL : 7197-48GY/DSBT077A-C FCC ID: 2ADWN7197-48GY To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - Block Diagram - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title : Aaron Zhang /Manager Contact information / address: F3, Building B1, GaoXinJian Industrial Park, FuYuan 1st Road, HePing Vallage, FuYon ShenZhen, 518103 China

Digiview Technology Limited 2021.03.16 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Client’s signature: Client’s name / title : Aaron Zhang /Manager Contact information / address: F3, Building B1, GaoXinJian Industrial Park, FuYuan 1st Road, HePing Vallage, FuYon ShenZhen, 518103 China

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Size:10*5mm FCC ID: 2ADWN7197-48GY Label Location

Internal Photos Antenna

Shenzhen BCTC Testing Co., Ltd. FCC ID: 2ADWN7197-48GY Portable device According to §15.247(e)(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g SAR and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)]·[√f(GHZ)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where: • f(GHZ) is the RF channel transmit frequency in GHz • Power and distance are rounded to the nearest mW and mm before calculation • The result is rounded to one decimal place for comparison When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. Modulation Channel Freq. (GHz) Conducte d power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n SAR Exclusion threshold SAR test exclusion GFSK2.4020.8191.210±11.001.26<50.390233.00YES Pi/4 DQPSK 2.4021.5121.421±12.001.58<50.491273.00YES Conclusion: For the max result : 0.49127＜3.0, the SAR testing is not required.

No.：BCTC/RF-EMC-005 Page 1 of 62 Edition：A.3 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2101318087E Applicant: Digiview Technology Limited Product Name: 7197-48GY/DSBT077A-C Model/Type Ref.: 7197-48GY/DSBT077A-C Tested Date: 2021-01-14 to 2021-01-22 Issued Date: 2021-01-26 Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 2 of 62 Edition：A.3 FCC ID: 2ADWN7197-48GY The test report is effective only with both signature and specialized stamp.This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full.The tested sample(s) and the sample information are provided by the client. Product Name: 7197-48GY/DSBT077A-C Trademark: N/A Model/Type Ref.: 7197-48GY/DSBT077A-C Prepared For: Digiview Technology Limited Address: F3, Building B1, GaoXinJian Industrial Park, FuYuan 1st Road, HePing Vallage, FuYon ShenZhen, 518103 China Manufacturer: Digiview Technology Limited Address: F3, Building B1, GaoXinJian Industrial Park, FuYuan 1st Road, HePing Vallage, FuYon ShenZhen, 518103 China Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Tangwei, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2021-01-14 Sample tested Date: 2021-01-14 to 2021-01-22 Issue Date: 2021-01-26 Report No.: BCTC2101318087E Test Standards FCC Part15.247 ANSI C63.10-2013 Test Results PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Eric Yang/Project Handler Zero Zhou/Reviewer Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 3 of 62 Edition：A.3 TABLE OF CONTENT Test Report Declaration Page 1. VERSION ............................................................ 5 2. TEST SUMMARY ..................................................... 6 3. MEASUREMENT UNCERTAINTY ....................................... 7 4. PRODUCT INFORMATION AND TEST SETUP............................ 8 4.1 Product Information ..................................................... 8 4.2 Test Setup Configuration ................................................ 8 4.3 Support Equipment ..................................................... 9 4.4 Channel List ........................................................... 9 4.5 Test Mode ............................................................ 10 5. TEST FACILITY AND TEST INSTRUMENT USED ........................ 11 5.1 Test Facility ........................................................... 11 5.2 Test Instrument Used .................................................. 11 6. CONDUCTED EMISSIONS ............................................ 13 6.1 Block Diagram Of Test Setup ............................................ 13 6.2 Limit ................................................................. 13 6.3 Test procedure ........................................................ 13 6.4 EUT operating Conditions ............................................... 14 6.5 Test Result ........................................................... 15 7. RADIATED EMISSIONS .............................................. 17 7.1 Block Diagram Of Test Setup ............................................ 17 7.2 Limit ................................................................. 18 7.3 Test procedure ........................................................ 19 7.4 EUT operating Conditions ............................................... 21 7.5 Test Result ........................................................... 22 8. RADIATED BAND EMISSION MEASUREMENT AND RESTRICTED BANDS OF OPERATION .................................................. 26 8.1 Block Diagram Of Test Setup ............................................ 26 8.2 Limit ................................................................. 26 8.3 Test procedure ........................................................ 27 8.4 EUT operating Conditions ............................................... 27 8.5 Test Result ........................................................... 28 9. CONDUCTED EMISSION ............................................. 29 9.1 Block Diagram Of Test Setup ............................................ 29 9.2 Limit ................................................................. 29 9.3 Test procedure ........................................................ 29 9.4 Test Result ........................................................... 30 10. 20 DB BANDWIDTH .................................................. 36 10.1 Block Diagram Of Test Setup .......................................... 36 10.2 Limit ................................................................ 36 Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 4 of 62 Edition：A.3 10.3 Test procedure ....................................................... 36 10.4 Test Result .......................................................... 37 11. MAXIMUM PEAK OUTPUT POWER .................................... 41 11.1 Block Diagram Of Test Setup .......................................... 41 11.2 Limit ................................................................ 41 11.3 Test procedure ....................................................... 41 11.4 Test Result .......................................................... 42 12. HOPPING CHANNEL SEPARATION ................................... 46 12.1 Block Diagram Of Test Setup .......................................... 46 12.2 Limit ................................................................ 46 12.3 Test procedure ....................................................... 46 12.4 Test Result .......................................................... 47 13. NUMBER OF HOPPING FREQUENCY .................................. 51 13.1 Block Diagram Of Test Setup .......................................... 51 13.2 Limit ................................................................ 51 13.3 Test procedure .......…

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Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 33 of 62 Edition：A.3 GFSK Transmitting Band edge-right side GFSK Hopping Band edge-right side Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 34 of 62 Edition：A.3 Pi/4 DQPSK Transmitting Band edge-left side Pi/4 DQPSK Hopping Band edge-left side Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 35 of 62 Edition：A.3 Pi/4 DQPSK Transmitting Band edge-right side Pi/4 DQPSK Hopping Band edge-right side Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 36 of 62 Edition：A.3 10. 20 DB BANDWIDTH 10.1 Block Diagram Of Test Setup 10.2 Limit N/A 10.3 Test procedure 1. Set RBW = 30kHz. 2. Set the video bandwidth (VBW) ≥ 3 x RBW. 3. Detector = Peak. 4. Trace mode = max hold. 5. Sweep = auto couple. 6. Allow the trace to stabilize. 7. Measure the maximum width of the emission that is constrained by the frequencies associated with the two outermost amplitude points (upper and lower frequencies) that are attenuated by 6 dB relative to the maximum level measured in the fundamental emission. . Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 37 of 62 Edition：A.3 10.4 Test Result Temperature： 26°C Relative Humidity： 54% Test Voltage ： AC120V/60Hz Remark N/A Modulation Test Channel Bandwidth(MHz) GFSK Low 0.874 GFSK Middle 0.878 GFSK High 0.871 Pi/4 DQPSK Low 1.234 Pi/4 DQPSK Middle 1.235 Pi/4 DQPSK High 1.258 Test plots GFSK Low Channel Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 38 of 62 Edition：A.3 GFSK Middle Channel GFSK High Channel Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 39 of 62 Edition：A.3 Pi/4 DQPSK Low Channel Pi/4 DQPSK Middle Channel Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 40 of 62 Edition：A.3 Pi/4 DQPSK High Channel Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 41 of 62 Edition：A.3 11. MAXIMUM PEAK OUTPUT POWER 11.1 Block Diagram Of Test Setup 11.2 Limit FCC Part15 (15.247) , Subpart C Section Test Item Limit Frequency Range (MHz) Result 15.247(b)(1) Peak Output Power 0.125 watt or 21dBm 2400-2483.5 PASS 11.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 3MHz. VBW = 3MHz. Sweep = auto; Detector Function = Peak. 3. Keep the EUT in transmitting at lowest, medium and highest channel individually. Record the max value. Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 42 of 62 Edition：A.3 11.4 Test Result Temperature： 26°C Relative Humidity： 54% Test Voltage ： AC120V/60Hz Remark: N/A Modulation Test Channel Output Power (dBm) Limit (dBm) GFSK Low 0.819 21 GFSK Middle 0.491 21 GFSK High 0.710 21 Pi/4 DQPSK Low 1.512 21 Pi/4 DQPSK Middle 1.187 21 Pi/4 DQPSK High 1.379 21 Test plots GFSK Low Channel Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 43 of 62 Edition：A.3 GFSK Middle Channel GFSK High Channel Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 44 of 62 Edition：A.3 Pi/4 DQPSK Low Channel Pi/4 DQPSK Middle Channel Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 45 of 62 Edition：A.3 Pi/4 DQPSK High Channel Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 46 of 62 Edition：A.3 12. HOPPING CHANNEL SEPARATION 12.1 Block Diagram Of Test Setup 12.2 Limit Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hopping channel, whichever is greater. Alternatively, frequency hopping systems operating in the 2400-2483.5 MHz band may have hopping channel carrier frequencies that are separated by 25 kHz or two-thirds of the 20 dB bandwidth of the hopping channel, whichever is greater, provided the systems operate with an output power no greater than 0.125W. 12.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 30kHz. VBW = 100kHz , Span = 2.0MHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks of the adjacent channels. The limit is specified in one of the subparagraphs of this Section Submit this plot. Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 47 of 62 Edition：A.3 12.4 Test Result Modulation Test Channel Separation (MHz) Limit(MHz) Result GFSK Low 1.000 0.583 PASS GFSK Middle 1.004 0.585 PASS GFSK High 1.004 0.581 PASS Pi/4 DQPSK Low 1.000 0.823 PASS Pi/4 DQPSK Middle 0.998 0.823 PASS Pi/4 DQPSK High 1.002 0.839 PASS Test plots GFSK Low Channel Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 48 of 62 Edition：A.3 GFSK Middle Channel GFSK High Channel Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 49 of 62 Edition：A.3 Pi/4 DQPSK Low Channel Pi/4 DQPSK Middle Channel Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 50 of 62 Edition：A.3 Pi/4 DQPSK High Channel Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 51 of 62 Edition：A.3 13. NUMBER OF HOPPING FREQUENCY 13.1 Block Diagram Of Test Setup 13.2 Limit Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. 13.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 100kHz. VBW = 300kHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. It may prove necessary to break the span up to sections. in order to clearly show all of the hopping frequencies. The limit is specified in one of the subparagraphs of this Section. 4. Set the spectrum analyzer: Start Frequency = 2.4GHz, Stop Frequency = 2.4835GHz. Sweep=auto; Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 52 of 62 Edition：A.3 13.4 Test Result Test Plots: 79 Channels in total GFSK Pi/4 DQPSK Report No.: BCTC2101318087E No.：BCTC/RF-EMC-005 Page 53 of 62 Edition：A.3 14. DWELL TIME 14.1 Block Diagram Of Test Setup 14.2 Limit Frequency hopping systems in the 2400-2483.5 …

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Conducted emissions Radiated Measurement Photos