RADIO EXPOSURE TEST REPORT

Equipment Identification

FCC ID: I88EX3510-B1

Equipment: AX5700 WiFi6 Gigabit Ethernet Gateway

Brand Name: ZYXEL, Google Fiber

Model Name: EX3510-B1, C3510XZ, GRAX110Z

Applicant: Zyxel Communications Corporation

Manufacturer: Zyxel Communications Corporation

Standard: 47 CFR Part 2.1091

Test Execution Details

Product Received: May 23, 2022

Testing Started: Jun. 04, 2022

Testing Completed: Jun. 15, 2022

Declaration: The tested sample has been evaluated in accordance with the procedures given in 47 CFR Part 2.1091 and shown compliance with the applicable technical standards.

Note: The test results in this report apply exclusively to the tested model/sample. Without written approval of Sporton International Inc. Hsinchu Laboratory, the test report shall not be reproduced except in full.

Approved by: Sam Chen

Testing Laboratory: Sporton International Inc. Hsinchu Laboratory

Laboratory Address: No.8, Ln. 724, Bo'ai St., Zhubei City, Hsinchu County 302010, Taiwan (R.O.C.)

Laboratory Contact: TEL: 886-3-656-9065, FAX: 886-3-656-9085

Report Template No.: CB-A1_1 Ver1.1

Issued Date: Aug. 05, 2022

Report Version: 01

History of Test Report

Summary of Test Result

Declaration of Conformity

1. The test results with all measurement uncertainty excluded are presented in accordance with the regulation limits or requirements declared by manufacturers. It's means measurement values may risk exceeding the limit of regulation standards, if measurement uncertainty is included in test results.
2. The measurement uncertainty please refer to report "Measurement Uncertainty".

Comments and Explanations

The declared product specification for EUT presented in the report are provided by the manufacturer, and the manufacturer takes all the responsibilities for the accuracy of product specification.

Reviewed by: Sam Chen

Report Producer: Wendy Pan

General Description

1.1 EUT General Information

RF General Information

Antenna Information

1.2 Antenna Information

Antenna Details

Gain (dBi)

Note 1: The EUT equips seven antennas.

Note 2: The above brand name, model name and type information were declared by manufacturer.

Functionality Description

For 2.4GHz function:

For IEEE 802.11b/g/n/VHT/ax mode (3TX/3RX): Port 1~3 can be used as transmitting/receiving antenna. Port 1~3 could transmit/receive simultaneously.

For 5GHz function:

For IEEE 802.11a/n/ac/ax mode (4TX/4RX): Port 1~4 can be used as transmitting/receiving antenna. Port 1~4 could transmit/receive simultaneously.

[Diagram Description: An image shows the layout of seven antennas on the device. Labeled antennas include 5G Ant3, 5G Ant2, 5G Ant4, 5G Ant1, 2G Ant1, 2G Ant2, and 2G Ant3, indicating their physical placement.]

Product Information

1.3 Table for Multiple Listing

The brand/model names in the following table are all refer to the identical product.

Note 1: From the above models, model: EX3510-B1 was selected as representative model for the test and its data was recorded in this report.

Note 2: The above information was declared by manufacturer.

1.4 Accessories

Adapter

Others

• Ethernet cable*1: Non-shielded, 1m, Color: Blue
• Ethernet cable*1: Non-shielded, 1.8m, Color: Yellow

Note: Only one ethernet cable will be selected for market.

1.5 Applicable Standards

According to the specifications of the manufacturer, the EUT must comply with the requirements of the following standards:

• 47 CFR Part 2.1091
• KDB 447498 D04 Interim General RF Exposure Guidance v01
• 47 CFR Part 1.1307
• 47 CFR Part 1.1310

[Note: The following reference test guidance is not within the scope of accreditation of TAF.]

Testing Location

1.6 Testing Location

Testing Location Information

Test Lab: Sporton International Inc. Hsinchu Laboratory

Location: Hsinchu (TAF: 3787)

Address: No.8, Ln. 724, Bo'ai St., Zhubei City, Hsinchu County 302010, Taiwan (R.O.C.)

TEL: 886-3-656-9065

FAX: 886-3-656-9085

Test site Designation No.: TW3787 with FCC.

Conformity Assessment Body Identifier (CABID): TW3787 with ISED.

Maximum Permissible Exposure (MPE)

2.1 Limit of Maximum Permissible Exposure

(A) Limits for Occupational / Controlled Exposure

(B) Limits for General Population / Uncontrolled Exposure

Note: f = frequency in MHz ; *Plane-wave equivalent power density

2.2 MPE Calculation Method

The MPE was calculated at 46 cm to show compliance with the power density limit.

The following formula was used to calculate the Power Density:

E (V/m) = √30 × P × G / d

Power Density: Pd (W/m²) = E² / 377

Where:

• E = Electric field (V/m)
• P = RF output power (W)
• G = EUT Antenna numeric gain (numeric)
• d = Separation distance between radiator and human body (m)

The formula can be changed to:

Pd = 30 × P × G / (377 × d²)

MPE Exemption Criteria

2.3 MPE Exemption

Option (A): 1.1307(b)(3)(i)(A): Available maximum time-averaged power is < 1 mW

Option (B): 1.1307(b)(3)(i)(B): Device operates between 300 MHz and 6 GHz and the maximum time-averaged power or effective radiated power (ERP), whichever is greater, <= Pth.

Pth (mW) = (ERP20 cm(d/20 cm)²) for d ≤ 20 cm

Where

x = -log10(60 / (ERP20 cm √f)) and f is in GHz;

Pth (mW) = (ERP20 cm(d/20 cm)²) for 20 cm < d ≤ 40 cm

ERP20 cm (mW) =

• (2040f) for 0.3 GHz ≤ f < 1.5 GHz
• (3060) for 1.5 GHz ≤ f ≤ 6 GHz

d = the separation distance (cm);

Option (C): 1.1307(b)(3)(i)(C): ERP is below a threshold calculated based on the distance R between the person and the antenna / radiating structure, where R > λ / 2 π.

Single RF Sources Subject to Routine Environmental Evaluation

Note: R is in meters, f is in MHz.

Calculated Results and Limits

2.4 Calculated Result and Limit

Exposure Environment: General Population / Uncontrolled Exposure

Note: The above antenna gain was declared by manufacturer.

MPE Exemption Option C

Simultaneous Transmission Analysis Mode: WLAN 2.4GHz+WLAN 5GHz

[THE END]