2A4SS-DEBIX-MODEL-ADevelopment embedded board industrial kits

Polyhex Technology Co., Ltd. 1 / 24 DEBIX Model A User Manual Version: V1.0（2021-07） Editor: Polyhex Technology Company Limited（http://www.polyhex.net/） In recent years, with the ever-increasing product demand in fields of application such as smart home, smart security, video surveillance and industrial automation, AI chips capable of resolving problems in these fields have also emerged. Polyhex Technology has responded to this demand with the launch of DEBIX Model A, a development board based on NXP NPU processor i.MX 8M Plus. It focuses on machine learning, vision processing, and industrial IoTs, meeting the application needs of commercial and industrial fields such as education, security monitoring, industrial automation, smart homes and smart cities. Polyhex Technology Co., Ltd. 2 / 24 INDEX Chapter 1 About DEBIX 3 DEBIX Structure Overview 4 DEBIX Tech Specs 6 DEBIX I/O Interfaces 7 Chapter 2 DEBIX Installation Guide 10 Hardware Installation 12 Software Installation 14 Chapter 3 Using DEBIX 16 Desktop Introduction 16 System Browser 17 File Management 17 First Time Using 18 Change User Password 19 Wi-Fi Connection 19 Change Language 19 Shut Down 22 Chapter 4 Introduction of Hardware Programming 23 GPIO Introduction 23 Polyhex Technology Co., Ltd. 3 / 24 Chapter 1 About DEBIX DEBIX is essentially a versatile single board computer, which can be widely applied in artificial intelligence, machine learning and industry 4.0 applications. The following are some of the powerful features of DEBIX: ● Powerful Quad Core Arm ® Cortex ® -A53 CPU with a Neural Processing Unit (NPU) operating at up to 2.3 TOPS. ● The multimedia capabilities include video encode (including h.265) and decode, 3D/2D graphic acceleration, and multiple audio and voice functionalities. ● Real-time control with Cortex-M7. Robust control networks supported by dual CAN FD and dual Gigabit Ethernet with Time Sensitive Networking (TSN). ● High industrial reliability with DRAM inline ECC. ● Designed for severe environmental conditions and industrial grade temperature requirements. The wide CPU temperature range of -40°C to 105°C makes it suitable for extreme operation environments like public transportation and industrial control etc. ● The credit card form factor board contains 40 GPIO ports. This allows DEBIX to give full processor performance while being free from application restrictions in physical space. ● Support mainstream operating systems including Android, Ubuntu and Yocto. DEBIX has a clear edge in the area of facial and object recognition applications which combine machine learning and visual processing. Take facial recognition as an example: DEBIX can simultaneously detect and identify the body frames and facial features of multiple people. It can also be used in traffic control to identify vehicle types and information of drivers. Using NPU to perform recognition operations not only increases the recognition speed, but also sees a noticeable reduction to the burden on the CPU. DEBIX’s TSN technology makes it essential for Industrial 4.0 applications, as it meets the needs of industrial enterprises with precision oriented production time control, thus increasing the interconnection speed of the IoT. Polyhex Technology Co., Ltd. 4 / 24 DEBIX Structure Overview DEBIX's interface features a compact arrangement, the interface components are visible at a glance. Let’s learn more about DEBIX’s interface through the following pictures/ DEBIX uses NXP i.MX 8M Plus based SOC, it has 2GB/4GB/6GB memory, supports Gigabit Ethernet, dual-band wireless network and Bluetooth 5.0. The data specifications are as follows: Polyhex Technology Co., Ltd. 5 / 24 System CPU NXP i.MX 8M Plus (default), 4 x Cortex-A53, comes with an integrated neural processing unit (NPU) that delivers up to 2.3 TOPS. Industrial grade CPU runs at 1.6GHz, and commercial grade CPU runs at up to 1.8GHz. (i.MX 8M Plus series CPU optional) Memory 2GB LPDDR4 (4GB/6GB optional) Storage Default: TF card (Onboard 8GB-128GB eMMC optional) Operating System Android 11, Yocto, Ubuntu I/O Interfaces Gigabit Network 10/100/1000M LAN 1 x RJ45 with POE power supply (need POE power supply module） 1 x pin header (without network transformer) WIFI & BT 2.4G & 5G dual-frequency WIFI, BT5.0 USB 4 x USB 3.0 Host Type-A, 1 x USB 2.0 OTG Type-C Audio 1 x Earphone L & R OUT，1 x Earphone Mic IN HDMI 1 x HDMI OUT Expansion 40-Pin Double-Row Headers (1) 3 x UART, 2 x SPI, 2 x I2C, 2 x CAN, 1 x PWM, 2 x GPIO, dedicated interfaces can be reused as GPIO ports (2) 1 x SPDIF digital audio input/output (3) 5V power supply, system reset, ON/OFF LVDS 1 x LVDS, single & dual channel 8bit, double-row pin headers MIPI CSI 1 x MIPI CSI, support 4Lane FPC socket MIPI DSI 1 x MIPI DSI, support 4Lane FPC socket PCIe 1 x PCIe, support PCIe x1 FPC socket Power Supply Power Supply DC 5V/3A Type-C Mechanical & Environmental Size 85.0 x 56.0mm CPU Temperature -40°C to 105°C Polyhex Technology Co., Ltd. 6 / 24 DEBIX Tech Specs Like an ordinary computer, DEBIX consists of a range of different computer components. The most important component is the "brain" of the computer, the system-on-chip/SoC in the center at the front of the motherboard. The SoC contains most of the components of the computer, usually including the central processing unit (CPU) and the graphics processing unit (GPU). And next to the SoC you will find another larger chip, the random access memory (RAM/memory). CPU & GPU RAM There is a component with a metal cover in the upper left corner of the motherboard, it contains the wireless communication module which contains the wireless network card and Bluetooth components. Polyhex Technology Co., Ltd. 7 / 24 DEBIX I/O Interfaces DEBIX has 4 USB 3.0 ports. The right side of the USB 3.0 is an Ethernet port, it connects DEBIX to the network through a cable with an RJ45 connector. There are two status indicators below the Ethernet port to show the signal upstream or downstream status. There is a…

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Agent Authorization Company: Polyhex Technology Company Limited Address: 5/F., East Zone, Shunheda A2 Building, Liuxiandong Industrial Park, Xili, Nanshan Dist., Shenzhen, China Product Name: Development embedded board industrial kits Model Number(s): DEBIX Model A Product Description: Development embedded board industrial kits We authorize MiCOM Labs Inc ., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2022-04-01 Name: YANGE LIN Title: Business Executive Company: Polyhex Technology Company Limited

< Polyhex Technology Company Limited > Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD21046 Date: 2022-04-01 Subject; Request for Long Term Confidentiality FCC ID: 2A4SS-DEBIX-MODEL-A To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description FCC Software Security Requirements for UNII devices Pursuant to Public Notice DA 04-1705 of the Commission' s policy, in order to comply with the marketing regulations in 47 CFT §2.803 and the importation rules in 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuanttoKDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: YANGE LIN Title: Business Executive

Model No.:DEBIX Model A FCC ID :2A4SS-DEBIX-MODEL-A

FCC ID: 2A4SS-DEBIX-MODEL-A RF Exposure Evaluation Limits The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in 1.1307(b) Limits for Maximum Permissible Exposure (MPE) Frequency range (MHz) Electric field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm 2 ) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposures 0.3–3.0 614 1.63 *(100) 6 3.0–30 1842/f 4.89/f *(900/f 2 ) 6 30–300 61.4 0.163 1.0 6 300–1500 f/300 6 1500–100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f 2 ) 30 30–300 27.5 0.073 0.2 30 300–1500 f/1500 30 1500–100,000 1.0 30 f = frequency in MHz Friis transmission formula: Pd = (Pout*G)/(4*pi*r 2 ) Where Pd = power density in mW/cm 2 , Pout = output power to antenna in mW; G = gain of antenna in linear scale, Pi = 3.1416; R = distance between observation point and center of the radiator in cm Pd id the limit of MPE, 1 mW/cm 2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. Test Result of RF Exposure Evaluation Wifi 2.4G Channel Max output power to antenna (dBm) Output power to antenna (mW) Power Density at R=20cm (mW/cm 2 ) Limit (mW/cm 2 ) Result 2462MHz 14.93 31.12 0.00780 1.0 PASS Wifi 5.2G Channel Max output power to antenna (dBm) Output power to antenna (mW) Power Density at R=20cm (mW/cm 2 ) Limit (mW/cm 2 ) Result 5180MHz 14.95 31.26 0.00784 1.0 PASS Wifi 5.3G Channel Max output power to antenna (dBm) Output power to antenna (mW) Power Density at R=20cm (mW/cm 2 ) Limit (mW/cm 2 ) Result 5310MHz 14.80 30.20 0.00757 1.0 PASS Wifi 5.6G Channel Max output power to antenna (dBm) Output power to antenna (mW) Power Density at R=20cm (mW/cm 2 ) Limit (mW/cm 2 ) Result 5500 MHz 14.96 31.33 0.00785 1.0 PASS Wifi 5.8G Channel Max output power to antenna (dBm) Output power to antenna (mW) Power Density at R=20cm (mW/cm 2 ) Limit (mW/cm 2 ) Result 5825MHz 12.76 18.88 0.00473 1.0 PASS Antenna gain: 1dBi According to 447498 D01 General RF Exposure Guidance v05 The 1-g 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 eirp = pt x gt = (EXd)2/30 where: pt = transmitter output power in watts, gt = numeric gain of the transmitting antenna (unitless), E = electric field strength in V/m, --- 10 ((dBuV/m)/20) /10 6 d = measurement distance in meters (m) ---3m So pt = (EXd) 2 /30 x gt For BT mode Field strength = 90.68dBuV/m @3m Ant gain =1dBi, so Ant numeric gain=1.259 So pt={ [10 (90.68/20) /10 6 x 3] 2 /30x1.259}x1000 mW =0.28mW So (0.28mW /5mm)x √2.480 = 0.088<3 For BLE mode Field strength =90.49dBuV/m @3m Ant gain =1dBi, so Ant numeric gain= 1.259 So pt={ [10 90.49/20) /10 6 x 3] 2 /30x1.259}x1000 mW =0.27mW So (0.27mW /5mm)x √2.440 = 0.084<3 802.11n/ac could work in Synchronous transmitting mode. The maximum simultaneously power density were as below BT+2.4G WIFI+5.2G WIFI: 0.0371 <1. BT+2.4G WIFI+5.3G WIFI: 0.0372 <1 BT+2.4G WIFI+5.6G WIFI: 0.0369 <1 BT+2.4G WIFI+5.8G WIFI: 0.0372 <1 The max power density is less than MPE exempt limit, so it is compliance.

Global United Technology Services Co., Ltd. Report No.: GTSL202202000121F01 Authorized Signature: Robinson Luo Laboratory Manager This results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Page 1 of 27 TEST REPORT Applicant: Polyhex Technology Company Limited Address of Applicant: 5/F., East Zone, Shunheda A2 Building, Liuxiandong Industrial Park, Xili, Nanshan Dist., Shenzhen, China Manufacturer: Polyhex Technology Company Limited Address of Manufacturer: 5/F., East Zone, Shunheda A2 Building, Liuxiandong Industrial Park, Xili, Nanshan Dist., Shenzhen, China Equipment Under Test (EUT) Product Name: Development embedded board industrial kits Model No.: DEBIX Model A Trade Mark: DEBIX FCC ID: 2A4SS-DEBIX-MODEL-A Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.249 Date of sample receipt: February 25, 2022 Date of Test: February 25, 2022-March 31,2022 Date of report issued: April 01, 2022 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. Report No.: GTSL202202000121F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 27 2 Version Version No. Date Description 00 April 01, 2022 Original Prepared By: Date: April 01, 2022 Project Engineer Check By: Date: April 01, 2022 Reviewer Report No.: GTSL202202000121F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 27 3 Contents Page 1 COVER PAGE ............................................................................................................................................ 1 2 VERSION .................................................................................................................................................. 2 3 CONTENTS .............................................................................................................................................. 3 4 TEST SUMMARY ..................................................................................................................................... 4 4.1 MEASUREMENT UNCERTAINTY ............................................................................................................ 4 5 GENERAL INFORMATION ...................................................................................................................... 5 5.1 GENERAL DESCRIPTION OF EUT ......................................................................................................... 5 5.2 TEST MODE ........................................................................................................................................ 7 5.3 DESCRIPTION OF SUPPORT UNITS ....................................................................................................... 7 5.4 DEVIATION FROM STANDARDS ............................................................................................................. 7 5.5 ABNORMALITIES FROM STANDARD CONDITIONS ................................................................................... 7 5.6 TEST FACILITY .................................................................................................................................... 8 5.7 TEST LOCATION ................................................................................................................................. 8 5.8 ADDITIONAL INSTRUCTIONS ................................................................................................................. 8 6 TEST INSTRUMENTS LIST ..................................................................................................................... 9 7 TEST RESULTS AND MEASUREMENT DATA .................................................................................... 11 7.1 ANTENNA REQUIREMENT ................................................................................................................... 11 7.2 CONDUCTED EMISSIONS ................................................................................................................... 12 7.3 RADIATED EMISSION METHOD ........................................................................................................... 15 7.3.1 Field Strength of The Fundamental Signal ................................................................................ 17 7.3.2 Spurious emissions .................................................................................................................... 18 7.3.3 Bandedge emissions.................................................................................................................. 23 7.4 20DB OCCUPY BANDWIDTH .............................................................................................................. 24 8 TEST SETUP PHOTO ............................................................................................................................ 27 9 EUT CONSTRUCTIONAL DETAILS ..................................................................................................... 27 Report No.: GTSL202202000121F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 4 of 27 4 Test Summary Test Item Section in CFR 47 Result Antenna requirement 15.203 Pass AC Power Line Conduc…

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Global United Technology Services Co., Ltd. Report No.: GTSL202202000121F02 Authorized Signature: Robinson Luo Laboratory Manager This results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Page 1 of 25 TEST REPORT Applicant: Polyhex Technology Company Limited Address of Applicant: 5/F., East Zone, Shunheda A2 Building, Liuxiandong Industrial Park, Xili, Nanshan Dist., Shenzhen, China Manufacturer: Polyhex Technology Company Limited Address of Manufacturer: 5/F., East Zone, Shunheda A2 Building, Liuxiandong Industrial Park, Xili, Nanshan Dist., Shenzhen, China Equipment Under Test (EUT) Product Name: Development embedded board industrial kits Model No.: DEBIX Model A Trade Mark: DEBIX FCC ID: 2A4SS-DEBIX-MODEL-A Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.249 Date of sample receipt: February 25, 2022 Date of Test: February 25, 2022-March 31,2022 Date of report issued: April 01, 2022 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. Report No.: GTSL202202000121F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 25 2 Version Version No. Date Description 00 April 01, 2022 Original Prepared By: Date: April 01, 2022 Project Engineer Check By: Date: April 01, 2022 Reviewer Report No.: GTSL202202000121F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 25 3 Contents Page 1 COVER PAGE ............................................................................................................................................ 1 2 VERSION .................................................................................................................................................. 2 3 CONTENTS .............................................................................................................................................. 3 4 TEST SUMMARY ..................................................................................................................................... 4 4.1 MEASUREMENT UNCERTAINTY ............................................................................................................ 4 5 GENERAL INFORMATION ...................................................................................................................... 5 5.1 GENERAL DESCRIPTION OF EUT ......................................................................................................... 5 5.2 TEST MODE ........................................................................................................................................ 7 5.3 DESCRIPTION OF SUPPORT UNITS ....................................................................................................... 7 5.4 DEVIATION FROM STANDARDS ............................................................................................................. 7 5.5 ABNORMALITIES FROM STANDARD CONDITIONS ................................................................................... 7 5.6 TEST FACILITY .................................................................................................................................... 7 5.7 TEST LOCATION ................................................................................................................................. 7 5.8 ADDITIONAL INSTRUCTIONS ................................................................................................................. 7 6 TEST INSTRUMENTS LIST ..................................................................................................................... 8 7 TEST RESULTS AND MEASUREMENT DATA .................................................................................... 10 7.1 ANTENNA REQUIREMENT ................................................................................................................... 10 7.2 CONDUCTED EMISSIONS ................................................................................................................... 11 7.3 RADIATED EMISSION METHOD ........................................................................................................... 14 7.3.1 Field Strength of The Fundamental Signal ................................................................................ 16 7.3.2 Spurious emissions .................................................................................................................... 17 7.3.3 Bandedge emissions.................................................................................................................. 22 7.4 20DB OCCUPY BANDWIDTH .............................................................................................................. 23 8 TEST SETUP PHOTO ............................................................................................................................ 25 9 EUT CONSTRUCTIONAL DETAILS ..................................................................................................... 25 Report No.: GTSL202202000121F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 4 of 25 4 Test Summary Test Item Section in CFR 47 Result Antenna requirement 15.203 Pass AC Power Line Conduc…

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Radiated Emission Conducted Emission