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Summary of Contents for Atop EHG3305
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Page 2: Fcc Part 15 Subpart B
Sheet 1 of 29 Sheets FCC Part 15 Subpart B TEST REPORT E.U.T. : Unmanaged Ethernet Switch Model No. : EHG3305 Serial Model : EHG3005 APPLICANT : Atop Technologies,Inc. ADDRESS : 1F, No. 30 R&D Rd. II, Science-Based Industrial Park, Hsinchu 30076, Taiwan, R.O.C. - Page 3 : Atop c) Model No. : EHG3305 d) Serial Model : EHG3005 e) Power Supply : 12-48Vdc, 0.5A Report Version History: Report No. Date of issue Description 20-09-RBO-032-03 2020-10-27 First Version. (Test Main Model:EHG3305) 20-11-RBO-002-03 2020-12-02 Add series models: EHG3005.
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Page 5: Table Of Contents
ETC Report No.: 20-11-RBO-002-03 Sheet 4 of 29 Sheets Table of Contents Page 1 GENERAL INFORMATION ....................... 5 1.1 Product Description and Operation ....................5 1.2 Characteristics of Device ......................5 1.3 Test Methodology ......................... 5 1.4 Test Facility ..........................5 2 PROVISIONS APPLICABLE ...................... -
Page 6: General Information
1.1 Product Description and Operation a) Type of EUT : Unmanaged Ethernet Switch b) Trade Name : Atop c) Model No. : EHG3305 d) Serial Model : EHG3005 e) Power Supply : 12-48Vdc, 0.5A f) Highest Frequency : 25MHz 1.2 Characteristics of Device Unmanaged Ethernet Switch 1.3 Test Methodology... -
Page 7: Provisions Applicable
ETC Report No.: 20-11-RBO-002-03 Sheet 6 of 29 Sheets 2 PROVISIONS APPLICABLE 2.1 Definition FCC § 15.3(z) Unintentional radiator: A device that intentionally generates and radio frequency energy for use within the device, or that sends radio frequency signals by conduction to associated equipment via connecting wiring, but which is not intended to emit RF energy by radiation or induction. -
Page 8: Requirement For Compliance
ETC Report No.: 20-11-RBO-002-03 Sheet 7 of 29 Sheets 2.2 Requirement for Compliance (1) Conducted Emission Requirement Except for Class A digital devices, for equpment that is designed to be connected to the public utility (AC) power line, the radio frequency voltage that is conducted back onto the AC power line on any frequency or frequencies within the band 150kHz to 30MHz shall not exceed the limits in the following table, as measured using a 50μH/50 ohms line impedance stabilization network (LISN). -
Page 9: Labeling Requirement
ETC Report No.: 20-11-RBO-002-03 Sheet 8 of 29 Sheets 2.3 Labeling Requirement According to FCC § 15.19 (a) In addition to the requirements in part 2 of this chapter, a device subject to certification, or Supplier's Declaration of Conformity shall be labeled as follows: (3) All other devices shall bear the following statement in a conspicuous location on the device: This device complies with part 15 of the FCC Rules. -
Page 10: User Information
ETC Report No.: 20-11-RBO-002-03 Sheet 9 of 29 Sheets 2.4 User Information According to FCC § 15.105 (a) For a Class A digital device or peripheral, the instructions furnished the user shall include the following or similar statement, placed in a prominent location in the text of the manual: Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. - Page 11 ETC Report No.: 20-11-RBO-002-03 Sheet 10 of 29 Sheets According to FCC § 15.21 The users manual or instruction manual for an intentional or unintentional radiator shall caution the user that changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
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Page 12: System Test Configuration
EUT. Three highest emissions were verified with varying placement of the connected cable to maximize the emission from EUT. 3.2 Devices for Tested System Manufacturer Model Cable Description Unmanaged Ethernet Atop Technologies, EHG3005 Switch * Inc. Terminal torque SDR-75-24 1.5m Unshielded Cable Latitude 1.8m Unshielded AC Adaptor... -
Page 13: Measurement Uncertainty
ETC Report No.: 20-11-RBO-002-03 Sheet 12 of 29 Sheets 3.4 Measurement Uncertainty Where relevant, the following measurement uncertainty levels have been estimated for tests performed on the EUT as specified in CISPR 16-4-2: Measurement Frequency Uncertainty Conducted emissions ±3.34dB(Mains)(LISN) 9kHz ~ 30MHz ±3.38dB(Voltage)(T2/T4/CAT 6) Conducted emission at telecommunication ports... -
Page 14: Radiated Emission Measurement
ETC Report No.: 20-11-RBO-002-03 Sheet 13 of 29 Sheets 4 RADIATED EMISSION MEASUREMENT 4.1 Applicable Standard For unintentional radiator digital devices, the radiated emission shall comply with § 15.109(a). And according to § 15.109 (g), as an alternative to the radiated emission limits is CISPR 22. 4.2 Measurement Procedure 1. -
Page 15: Measuring Instrument
ETC Report No.: 20-11-RBO-002-03 Sheet 14 of 29 Sheets 4.3 Measuring Instrument The following instrument are used for radiated emissions measurement: Equipment Manufacturer Model No. Calibration Date Next Cal. Date Assets No. Bilog Antenna with MCTD 2786 & FAT- BL13J03014 & ETC &... -
Page 16: Radiated Emission Data
ETC Report No.: 20-11-RBO-002-03 Sheet 15 of 29 Sheets 4.4 Radiated Emission Data (30MHz~1GHz) Site :Open site #2 Date :2020-11-13 Limit :FCC CLASS-A Ant. Pol. :HORIZONTAL :Unmanaged Ethernet Switch Model :EHG3005 Power Rating :120Vac 60Hz Temp. :22°C Engineer :Sky Kuo Humi. - Page 17 ETC Report No.: 20-11-RBO-002-03 Sheet 16 of 29 Sheets Site :Open site #2 Date :2020-11-13 Limit :FCC CLASS-A Ant. Pol. :VERTICAL :Unmanaged Ethernet Switch Model :EHG3005 Power Rating :120Vac 60Hz Temp. :22°C Engineer :Sky Kuo Humi. :59 % Test Mode :Operation mode Memo Detector...
- Page 18 ETC Report No.: 20-11-RBO-002-03 Sheet 17 of 29 Sheets (Above 1GHz) The highest internal frequency of the EUT is less than 108 MHz, the measurement shall only be made up to 1 GHz.
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Page 19: Field Strength Calculation
ETC Report No.: 20-11-RBO-002-03 Sheet 18 of 29 Sheets B. Emission frequencies below 30MHz (9kHz - 30MHz) According to exploratory test no any obvious emission were detected from 9kHz to 30MHz. 4.5 Field Strength Calculation The field strength is calculated by adding the Antenna Factor, High Pass Filter Loss and Cable Loss, and subtracting the Amplifier Gain (if any) from the measured reading. -
Page 20: Photos Of Radiation Measuring Setup
ETC Report No.: 20-11-RBO-002-03 Sheet 19 of 29 Sheets 4.6 Photos of Radiation Measuring Setup (30MHz~1GHz) -
Page 21: Conducted Emission Measurement
ETC Report No.: 20-11-RBO-002-03 Sheet 20 of 29 Sheets 5 CONDUCTED EMISSION MEASUREMENT 5.1 Description For unintentional and intentional device, Line Conducted Emission Limits are in accordance to § 15.107(a) and § 15.207(a) respectively. Both Limits are identical specification. 5.2 Measurement Procedure 1. -
Page 22: Conducted Emission Data
ETC Report No.: 20-11-RBO-002-03 Sheet 21 of 29 Sheets 5.3 Conducted Emission Data Site : conducted #1 Date : 2020-10-30 Condition : FCC CLASS-A QP LISN : NEUTRAL : 23 ℃ / 59% Tem / Hum Test Mode : Operation mode : Unmanaged Ethernet Switch Power Rating : 120Vac 60Hz Engineer... - Page 23 ETC Report No.: 20-11-RBO-002-03 Sheet 22 of 29 Sheets Site : conducted #1 Date : 2020-10-30 Condition : FCC CLASS-A QP LISN : LINE : 23 ℃ / 59% Tem / Hum Test Mode : Operation mode : Unmanaged Ethernet Switch Power Rating : 120Vac 60Hz Engineer : Sky Kuo...
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Page 24: Result Data Calculation
ETC Report No.: 20-11-RBO-002-03 Sheet 23 of 29 Sheets 5.4 Result Data Calculation The result data is calculated by adding the LISN Factor to the measured reading. The basic equation with a sample calculation is as follows: RESULT = READING + LISN FACTOR Assume a Wireless Microphone Receiver reading of 22.5 dB μ... -
Page 25: Photos Of Conduction Measuring Setup
ETC Report No.: 20-11-RBO-002-03 Sheet 24 of 29 Sheets 5.6 Photos of Conduction Measuring Setup... -
Page 26: Annex A: Photos
ETC Report No.: 20-11-RBO-002-03 Sheet 25 of 29 Sheets 6 ANNEX A: PHOTOS 1. Outside view 01 of EUT 2. Outside view 02 of EUT... - Page 27 ETC Report No.: 20-11-RBO-002-03 Sheet 26 of 29 Sheets 3. Outside view 03 of EUT 4. Outside view 04 of EUT...
- Page 28 ETC Report No.: 20-11-RBO-002-03 Sheet 27 of 29 Sheets 5. Outside view 05 of EUT 6. Outside view 06 of EUT...
- Page 29 ETC Report No.: 20-11-RBO-002-03 Sheet 28 of 29 Sheets 7. Outside view 07 of EUT 8. Outside view 08 of EUT...
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Page 30: Annex B: Difference Informations Of Series Model
ETC Report No.: 20-11-RBO-002-03 Sheet 29 of 29 Sheets 7 ANNEX B: DIFFERENCE INFORMATIONS OF SERIES MODEL...
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