2AU93WIWI2GOUKIWiWi module

WiWi Module Unit 2 Operation Manual (v1.3) Product Name: WiWi module Trade name:NICT Model name: WIWI2GOUKI Frequency Range: 922.5MHz-927.5MHz Product description This product provides synchronized signals when used in pair. Modules are synchronized through 920MHz radio signal and outputs 10MHz and 1pps (pulse per second) signal. Figure 1 overview of purpose description Module 1Module 2 10MHz 1pps 920MHz wireless Connection method Connect the antenna and AC adapter (5V) to the WiWi module (no USB cable connection required). Monitor 10Mhz output and 1pps output with an oscilloscope. Antenna AC adaptor USB Cable 1pps Out put 10Mhz Output Method of operation By performing the following operations, it is possible to observe on the oscilloscope how the 10MHz output of the slave is phase-locked to the master and the rises of 1pps are aligned with microsecond accuracy. 1 Complete the above connection. Next, 10MHz output and 1pps output are each monitored with an oscilloscope. 1.1 Compare 10MHz with master and slave, and when trigger is applied to master, slave signal flows to either right or left (frequency is different). 1.2 When 1pps is compared between the master and the slave, the rising position is observed to be off by more than 1 microsecond. 2 How to phase lock the slave module clock to the master module clock 2.1 Press the “Lock” button on the Slave module, or 2.2 Press the “remote Lock” button on the Master module. 2.2.1 Then 10MHz will phase lock within a few seconds, and the slave signal is observed to stop flowing. 2.2.2 After the 10MHz phase lock is observed, the rise of 1pps is alighned within 5 seconds with an accuracy of less than 1 microsecond. 2.3 Pressing the “remote Lock” button on the Master module again will result in “Unlock” or “Remote Unlock”. (From here, the frequency and phase will gradually shift by freerunning stability) 3 How to reset 3.1 Slave module reset 3.1.1 Press the “Reset” button on the Slave module, or 3.1.2 Press “Remote reset” on the Master module 3.2 Reset Master module 3.2.1 Press “Reset” on the Master module *About USB cable connection The USB cable connection is only used for troubleshooting and user does not need to use the connection. FEDERAL COMMUNICATIONS COMMISSION INTERFERENCE STATEMENT This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/ TV technician for help. CAUTION: Any changes or modifications not expressly approved by the grantee of this device could void the user's authority to operate the equipment.

Federal Communications Commission Authorization and Evaluation Division December 9, 2019 ATTESTATION FCC ID: 2AU93WIWI2GOUKI Product: WiWi module Model: WIWI2GOUKI We don’t provide any controls or software to allow operation outside the USA frequency band when we sell a product bearing the FCC ID: 2AU93WIWI2GOUKI anywhere in the world. Sincerely, ------------------------------------------------------------ Nobuyasu Shiga / Senior researcher National institute of Information and Communications technology

FCC ID.: 2AU93WIWI2GOUKI Date: December 9, 2019 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, the Applicant Hereby requests confidential treatment of information accompanying this Application As outlined below: Type of Confidentiality Requested Exhibit ☒ Permanent Block Diagrams ☐ Short Term External Photos ☐ Short Term Internal Photos ☒ Permanent Operation Description/Theory of Operation ☐ Permanent Parts List & Placement/BOM ☐ Permanent Tune-Up Procedure ☒ Permanent Schematics ☐ Short Term Test Setup Photos ☐ Short Term User’s Manual The above materials contain trade secrets and proprietary information not customarily Released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rule 0.457, disclosure of this Application and all accompanying documentation will not be made before the date of the Grant for this application. Permanent Confidentiality: The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public Short-Term Confidentiality: The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of 180 days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Sincerely, ------------------------------------------------------ Nobuyasu Shiga / Senior researcher National institute of Information and Communications technology

Declaration of Authorization We Name: National institute of Information and Communications technology Address: 4-2-1 Nukuikitamachi, Koganei, City: Tokyo, Country: JAPAN Declare that: Name Representative of agent: Vincent Lin Agent Company name: DEKRA Testing and Certification Co., Ltd. Address: No.5-22, Ruishukeng, Linkou Dist., City: New Taipei City 24451, Country: Taiwan, R.O.C. is authorized to apply for Certification of the following product(s): Product Name: WiWi module Model: WIWI2GOUKI FCC ID: 2AU93WIWI2GOUKI Trademark: NICT on our behalf. This is valid until December 9, 2020, or until FCC and IC certification are completed, whichever comes sooner. Date: December 9, 2019 City: Tokyo Name: Nobuyasu Shiga Function: Senior researcher Signature:

Report No.: 19C0396R-RFUSP66V00 Page: 1 of 4 Attachment 2 : EUT Detailed Photographs (1) EUT Photo (2) EUT Photo RF Antenna Report No.: 19C0396R-RFUSP66V00 Page: 2 of 4 (3) EUT Photo (4) EUT Photo Report No.: 19C0396R-RFUSP66V00 Page: 3 of 4 (5) EUT Photo (6) EUT Photo Report No.: 19C0396R-RFUSP66V00 Page: 4 of 4 (7) EUT Photo

National istitute of Information and Communications technology FCC ID.: 2AU93WIWI2GOUKI 4-2-1 Nukuikitamachi, Koganei, Tokyo, 184-8795 JAPAN, Tel : +81-42-327-5429 FCC ID Label

National istitute of Information and Communications technology FCC ID.: 2AU93WIWI2GOUKI 4-2-1 Nukuikitamachi, Koganei, Tokyo, 184-8795 JAPAN, Tel : +81-42-327-5429 The FCC ID will be placed on the equipment as shown in the photograph below.

Report No.: 19C0396R-RFUSP66V00 Page: 1 of 8 Attachment 2 : EUT Detailed Photographs (1) EUT Photo (2) EUT Photo Report No.: 19C0396R-RFUSP66V00 Page: 2 of 8 (3) EUT Photo (4) EUT Photo RF Chip Report No.: 19C0396R-RFUSP66V00 Page: 3 of 8 (5) EUT Photo (6) EUT Photo Report No.: 19C0396R-RFUSP66V00 Page: 4 of 8 (7) EUT Photo (8) EUT Photo Report No.: 19C0396R-RFUSP66V00 Page: 5 of 8 (9) EUT Photo (10) EUT Photo (Antenna) Report No.: 19C0396R-RFUSP66V00 Page: 6 of 8 (11) EUT Photo (12) EUT Photo Report No.: 19C0396R-RFUSP66V00 Page: 7 of 8 (13) EUT Photo (14) EUT Photo Report No.: 19C0396R-RFUSP66V00 Page: 8 of 8 (15) EUT Photo

Report No. 19C0396R-RFUSP66V00 Page : 1 of 39 FCC Test Report Product Name WiWi module Model No. WIWI2GOUKI FCC ID. 2AU93WIWI2GOUKI Applicant National istitute of Information and Communications technology Address 4-2-1 Nukuikitamachi, Koganei, Tokyo, 184-8795 JAPAN Date of Receipt Nov. 20, 2019 Issued Date Dec. 25, 2019 Report No. 19C0396R-RFUSP66V00 Report Version V1.0 The test results relate only to the samples tested. The test results shown in the test report are traceable to the national/international standard through the calibration report of the equipment and evaluated measurement uncertainty herein. This report must not be used to claim product endorsement by TAF or any agency of the government. The test report shall not be reproduced without the written approval of DEKRA Testing and Certification Co., Ltd. Report No. 19C0396R-RFUSP66V00 Page : 2 of 39 Te s t R e p o r t Issued Date: Dec. 25, 2019 Report No. : 19C0396R-RFUSP66V00 Product Name WiWi module Applicant National istitute of Information and Communications technology Address 4-2-1 Nukuikitamachi, Koganei, Tokyo, 184-8795 JAPAN Manufacturer National istitute of Information and Communications technology Model No. WIWI2GOUKI FCC ID. 2AU93WIWI2GOUKI EUT Rated Voltage DC 5V, 2.5A (by AC adaptor) EUT Test Voltage AC 120V/60Hz Trade Name NICT Applicable Standard FCC CFR Title 47 Part 15 Subpart C ANSI C63.4: 2014, ANSI C63.10: 2013 Test Result Complied Documented By : ( Senior Engineering Adm. Specialist / Anita Chou ) Tested By : ( Engineer / Sam Hsu ) Approved By : ( Director / Vincent Lin ) Report No. 19C0396R-RFUSP66V00 Page : 3 of 39 TA B L E O F C O N T E N T S Description Page 1. GENERAL INFORMATION ................................................................................................................ 4 1.1. EUT Description ...................................................................................................................................... 4 1.2. Operation Description .............................................................................................................................. 5 1.3. Tested System Details .............................................................................................................................. 6 1.4. Configuration of Test System ................................................................................................................... 6 1.5. EUT Exercise Software ............................................................................................................................ 6 1.6. Test Facility .............................................................................................................................................. 7 1.7. List of Test Equipment ............................................................................................................................. 8 1.8. Uncertainty ............................................................................................................................................. 10 2. Conducted Emission ............................................................................................................................ 11 2.1. Test Setup ............................................................................................................................................... 11 2.2. Limits ..................................................................................................................................................... 11 2.3. Test Procedure ........................................................................................................................................ 12 2.4. Uncertainty ............................................................................................................................................. 12 2.5. Test Result of Conducted Emission ....................................................................................................... 13 3. Radiated Emission................................................................................................................................ 15 3.1. Test Setup ............................................................................................................................................... 15 3.2. Limits ..................................................................................................................................................... 17 3.3. Test Procedure ........................................................................................................................................ 18 3.4. Uncertainty ............................................................................................................................................. 18 3.5. Test Result of Radiated Emission .......................................................................................................... 19 4. Band Edge ............................................................................................................................................. 33 4.1. Test Setup ............................................................................................................................................... 33 4.2. Limit ....................................................................................................................................................... 34 4.3. Test Procedure ........................................................................................................................................ 34 4.4. Uncertainty ............................................................................................................................................. 34 4.5. Test Result of Band Edge ....................................................................................................................... 35 5. EMI Reduction Method During Compliance Testing .........................…

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Report No.: 19C0396R-RFUSP66V00 Page : 1 of 3 Attachment 1: EUT Test Setup Photographs Front View of Conducted Test Back View of Conducted Test Report No.: 19C0396R-RFUSP66V00 Page : 2 of 3 Front View of Radiated Test Back View of Radiated Test Report No.: 19C0396R-RFUSP66V00 Page : 3 of 3 Front View of Radiated Test (Horn) Back View of Radiated Test (Horn)