FCC ID: 2AU93WIWI3GOUKI WiWi module

WiWi Module Unit 3 Operation Manual (v1.3) Product Name: WiWi module Trade name:NICT Model name: WIWI3GOUKI Frequency Range: 922.5MHz-923.1MHz 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 210MHz1pps920MHz wireless Connection method Antenna Sub Antenna 10Mhz Output LAN Cable 1PP Output AC adaptor IP address Connect the antenna and AC adapter (9V) to the WiWi module The LAN cable does not need to be connected. Monitor 10Mhz output and 1pps output with an oscilloscope. 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 2.1.1 Then 10MHz will phase lock within a few seconds, and the slave signal is observed to stop flowing. 2.1.2 After the 10MHz phase lock is observed, the rise of 1pps is alighned within 5 seconds with an accuracy of less than 1 microsecond. 2.2 Press the Lock button on the Slave module again to Unlock. 3 How to reset 3.1 Slave module reset 3.1.1 Press the Reset button on the Slave module. 3.2 Reset Master module 3.2.1 Press Reset on the Master module.

*About LAN cable connection The LAN 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.

National istitute of Information and Communications technology FCC ID.: 2AU93WIWI3GOUKI The FCC ID will be placed on the equipment as shown in the photograph below. 4-2-1 Nukuikitamachi, Koganei, Tokyo, 184-8795 JAPAN, Tel : +81-42-327-5429

National istitute of Information and Communications technology FCC ID.: 2AU93WIWI3GOUKI FCC ID Label 4-2-1 Nukuikitamachi, Koganei, Tokyo, 184-8795 JAPAN, Tel : +81-42-327-5429

Federal Communications Commission Authorization and Evaluation Division December 9, 2019 ATTESTATION FCC ID: 2AU93WIWI3GOUKI Product: WiWi module Model: WIWI3GOUKI We dont provide any controls or software to allow operation outside the USA frequency band when we sell a product bearing the FCC ID: 2AU93WIWI3GOUKI anywhere in the world. Sincerely,

Nobuyasu Shiga / Senior researcher National institute of Information and Communications technology

FCC ID.: 2AU93WIWI3GOUKI Date: December 9, 2019 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request Pursuant to Sections 0.457 and 0.459 of the Commissions Rules, the Applicant Hereby requests confidential treatment of information accompanying this Application As outlined below:

Type of Confidentiality Requested Exhibit Permanent Short Term Short Term Block Diagrams External Photos Internal Photos Permanent Permanent Permanent Permanent Short Term Short Term Operation Description/Theory of Operation Parts List & Placement/BOM Tune-Up Procedure Schematics Test Setup Photos Users 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

DEKRA Testing and Certification Co., Ltd. No.5-22, Ruishukeng, Linkou Dist., New Taipei City 24451, Taiwan, R.O.C. National institute of Information and Communications technology 4-2-1 Nukuikitamachi, Koganei, Tokyo, JAPAN Declaration of Authorization We Name:

Address:

City:

Country:

Declare that:

Name Representative of agent: Vincent Lin Agent Company name:

Address:

City:

Country:

is authorized to apply for Certification of the following product(s):

Product Name: WiWi module Model: WIWI3GOUKI FCC ID: 2AU93WIWI3GOUKI Trademark: NICT on our behalf. This is valid until December 9, 2020, or until FCC and IC certification are completed, whichever comes sooner. Date:

City:

Name:

Function:

Signature:

December 9, 2019 Senior researcher Nobuyasu Shiga Tokyo