1901RSU029-U1-FCC-15.256-Test-Report

FCC ID: 2ACSOGDRD87

Test Report

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FCCID_4234707

MRT Technology (Suzhou) Co., Ltd Report No.: 1901RSU029-U1 Phone: +86-512-66308358 Report Version: V01 Web: www.mrt-cert.com Issue Date: 03-26-2019 MEASUREMENT REPORT FCC PART15.256 FCC ID: 2ACSOGDRD87 APPLICANT: Beijing GODA Instruments Co., LTD. Application Type: Certification Product: 80G Radar Level Meter Model No.: GDRD81, GDRD82, GDRD83, GDRD84, GDRD85, GDRD87, GDRD88, GDRD89 Brand Name: GODA FCC Classification: LPR - Level Probing Radar FCC Rule Part(s): FCC PART15.256 Test Procedure(s): KDB890966 D01 Meas level Probing Radars v01r01 TR14-1007 Measurement of FMCW Test Date: January 29 ~ March 01, 2019 Reviewed By: (Sunny Sun) Approved By: ( Robin Wu ) The test results relate only to the samples tested. This equipment has been shown to be capable of compliance with the applicable technical standards as indicated in the measurement report and was tested in accordance with the measurement procedures specified in KDB890966 D01 v01r01. Test results reported herein relate only to the item(s) tested. The test report shall not be reproduced except in full without the written approval of MRT Technology (Suzhou) Co., Ltd. FCC ID: 2ACSOGDRD87 Page Number: 1 of 33

Report No.: 1901RSU029-U1 Revision History Report No. Version Description Issue Date Note 1901RSU029-U1 Rev. 01 Initial Report 03-26-2019 Valid FCC ID: 2ACSOGDRD87 Page Number: 2 of 33

Report No.: 1901RSU029-U1 CONTENTS Description Page 1. INTRODUCTION ........................................................................................................................ 6 1.1. Scope .............................................................................................................................. 6 1.2. MRT Test Location .......................................................................................................... 6 2. PRODUCT INFORMATION ........................................................................................................ 7 2.1. Equipment Description .................................................................................................... 7 2.2. Test Mode ....................................................................................................................... 8 2.3. EMI Suppression Device(s)/Modifications ....................................................................... 8 2.4. Labeling Requirements ................................................................................................... 8 3. DESCRIPTION of TEST............................................................................................................. 9 3.1. Evaluation Procedure ...................................................................................................... 9 3.2. AC Line Conducted Emissions ........................................................................................ 9 3.3. Radiated Emissions....................................................................................................... 10 4. ANTENNA REQUIREMENTS .................................................................................................. 11 5. TEST EQUIPMENT CALIBRATION DATE .............................................................................. 12 6. MEASUREMENT UNCERTAINTY ........................................................................................... 14 7. TEST RESULT ......................................................................................................................... 15 7.1. Summary ....................................................................................................................... 15 7.2. Fundmental Bandwidth .................................................................................................. 16 7.2.1. Test Limit ................................................................................................................... 16 7.2.2. Test Procedure used ................................................................................................. 16 7.2.3. Test Setting ................................................................................................................ 16 7.2.4. Test Setup ................................................................................................................. 16 7.2.5. Test Result ................................................................................................................. 17 7.3. Fundamental Emissions ................................................................................................ 18 7.3.1. Test Limit ................................................................................................................... 18 7.3.2. Test Procedure used ................................................................................................. 18 7.3.3. Test Setting ................................................................................................................ 18 7.3.4. Test Setup ................................................................................................................. 19 7.3.5. Test Results ............................................................................................................... 20 7.4. Unwanted Emissions ..................................................................................................... 21 7.4.1. Test Limit ................................................................................................................... 21 7.4.2. Test Procedure used ................................................................................................. 21 FCC ID: 2ACSOGDRD87 Page Number: 3 of 33

Report No.: 1901RSU029-U1 7.4.3. Test Procedure .......................................................................................................... 21 7.4.4. Test Setup ................................................................................................................. 22 7.4.5. Test Result ................................................................................................................. 24 7.5. Antenna Requirements .................................................................................................. 26 7.5.1. Test Limit ................................................................................................................... 26 7.5.2. Test Procedure used ................................................................................................. 26 7.5.3. Test Setting ................................................................................................................ 26 7.5.4. Test Setup ................................................................................................................. 26 7.5.5. Test Result ................................................................................................................. 26 7.6. Frequency Stability ........................................................................................................ 27 7.6.1. Test Limit ................................................................................................................... 27 7.6.2. Test Procedure used ................................................................................................. 27 7.6.3. Test Procedure .......................................................................................................... 27 7.6.4. Test Setup ................................................................................................................. 28 7.6.5. Test Result ................................................................................................................. 29 7.7. AC Conducted Emissions Measurement....................................................................... 30 7.7.1. Test Limit ................................................................................................................... 30 7.7.2. Test Setup ................................................................................................................. 30 7.7.3. Test Result ................................................................................................................. 30 8. CONCLUSION.......................................................................................................................... 31 Appendix A - Test Setup Photograph ............................................................................................ 32 Appendix B - EUT Photograph ...................................................................................................... 33 FCC ID: 2ACSOGDRD87 Page Number: 4 of 33

Report No.: 1901RSU029-U1 §2.1033 General Information Applicant: Beijing GODA Instruments Co., LTD. Hongfu Enterprise Incubation Yard 10,No.2 Workshop 2-4, Chang Ping Applicant Address: Dist.Beijing,102209 China Manufacturer: Beijing GODA Instruments Co., LTD. Hongfu Enterprise Incubation Yard 10,No.2 Workshop 2-4, Chang Ping Manufacturer Address: Dist.Beijing,102209 China Test Site: MRT Technology (Suzhou) Co., Ltd Test Site Address: D8 Building, No.2 Tian’edang Rd., Wuzhong Economic Development Zone, Suzhou, China FCC Registration No.: 893164 Test Device Serial No.: N/A Production Pre-Production Engineering Test Facility / Accreditations Measurements were performed at MRT Laboratory located in Tian’edang Rd., Suzhou, China.  MRT facility is a FCC registered (MRT Reg. No. 893164) test facility with the site description report on file and has met all the requirements specified in ANSI C63.4-2014.  MRT facility is an IC registered (MRT Reg. No. 11384A-1) test laboratory with the site description on file at Industry Canada.  MRT facility is a VCCI registered (R-20025, G-20034, C-20020, T-20020) test laboratory with the site description on file at VCCI Council.  MRT Lab is accredited to ISO 17025 by the American Association for Laboratory Accreditation (A2LA) under the American Association for Laboratory Accreditation Program (A2LA Cert. No. 3628.01) in EMC, Telecommunications, Radio and SAR testing. FCC ID: 2ACSOGDRD87 Page Number: 5 of 33

Report No.: 1901RSU029-U1 1. INTRODUCTION 1.1. Scope Measurement and determination of electromagnetic emissions (EMC) of radio frequency devices including intentional and/or unintentional radiators for compliance with the technical rules and regulations of the Federal Communications Commission and the Industry Canada Certification and Engineering Bureau. 1.2. MRT Test Location The map below shows the location of the MRT LABORATORY, its proximity to the Taihu Lake. These measurement tests were conducted at the MRT Technology (Suzhou) Co., Ltd. Facility located at D8 Building, No.2 Tian’edang Rd., Wuzhong Economic Development Zone, Suzhou, China. The measurement facility compliant with the test site requirements specified in ANSI C63.4-2014. FCC ID: 2ACSOGDRD87 Page Number: 6 of 33

Report No.: 1901RSU029-U1 2. PRODUCT INFORMATION 2.1. Equipment Description Product Name: 80G Radar Level Meter Model No.: GDRD81, GDRD82, GDRD83, GDRD84, GDRD85, GDRD87, GDRD88, GDRD89 Brand Name: GODA Frequency Range: 76 ~ 81GHz Modulation Type: FMCW Antenna Type: Horn Antenna Input Power: DC 24V Model Difference Model No. Classification Shell material Antenna Material Installation Max. Antenna Gain Plastic / Aluminium alloy / GDRD81 Liquid FEP / PP Thread 32 dBi Stainless steel Plastic / Aluminium alloy / GDRD82 Liquid 316L+PTFE Flange 32 dBi Stainless steel Plastic / Aluminium alloy / GDRD83 Liquid FEP / 316L+PTFE Thread 15 dBi Stainless steel Plastic / Aluminium alloy / GDRD84 Liquid PP Hanging 32 dBi Stainless steel Clamped GDRD85 Health Stainless steel PTFE 23 dBi connection Plastic / Aluminium alloy / Aluminium+PP, GDRD87 Solid Flange 34 dBi Stainless steel 316L+PTFE / PP GDRD88 Protection PA66 PP Hanging 23 dBi GDRD89 Marine Stainless steel 316L+PTFE Flange 32 dBi Note: The products are made up of electronic part, housing part, process connection part, installation accessories part and antenna. All electronic parts including RF circuit are same within these models, and differences of other parts such as Shell Material, Installation method etc. can not affect RF performance of the product. Only the differences of antennas can affect the RF performance and we selected the sample with the largest antenna gain for all RF testing. The following table is the information of our RF test sample. Model No. Shell material Antenna Material Installation Max. Antenna Gain GDRD87 Stainless steel 316L+PP Flange 34 dBi FCC ID: 2ACSOGDRD87 Page Number: 7 of 33

Report No.: 1901RSU029-U1 2.2. Test Mode The engineer test sample was provided by the manufacturer, it was configured into continuous transmit status after power on. 2.3. EMI Suppression Device(s)/Modifications No EMI suppression device(s) were added and/or no modifications were made during testing. 2.4. Labeling Requirements Per 2.1074 & 15.19; Docket 95-19 The label shall be permanently affixed at a conspicuous location on the device; instruction manual or pamphlet supplied to the user and be readily visible to the purchaser at the time of purchase. However, when the device is so small wherein placement of the label with specified statement is not practical, only the FCC ID must be displayed on the device per Section 15.19(a)(5). Please see attachment for FCC ID label and label location. FCC ID: 2ACSOGDRD87 Page Number: 8 of 33

Report No.: 1901RSU029-U1 3. DESCRIPTION of TEST 3.1. Evaluation Procedure The measurement procedures described in the American National Standard for Testing Unlicensed Wireless Devices (KDB890966 D01 Meas level Probing Radars v01r01), and the requirement provided in FCC Part 15.256 were used in the measurement of the EUT. Deviation from measurement procedure…………………………….....................................None 3.2. AC Line Conducted Emissions The line-conducted facility is located inside an 8'x4'x4' shielded enclosure. A 1m x 2m wooden table 80cm high is placed 40cm away from the vertical wall and 80cm away from the sidewall of the shielded room. Two 10kHz-30MHz, 50Ω/50uH Line-Impedance Stabilization Networks (LISNs) are bonded to the shielded room floor. Power to the LISNs is filtered by external high-current high-insertion loss power line filters. These filters attenuate ambient signal noise from entering the measurement lines. These filters are also bonded to the shielded enclosure. The EUT is powered from one LISN and the support equipment is powered from the second LISN. All interconnecting cables more than 1 meter were shortened to a 1 meter length by non-inductive bundling (serpentine fashion) and draped over the back edge of the test table. All cables were at least 40cm above the horizontal reference ground-plane. Power cables for support equipment were routed down to the second LISN while ensuring that that cables were not draped over the second LISN. Sufficient time for the EUT, support equipment, and test equipment was allowed in order for them to warm up to their normal operating condition. The RF output of the LISN was connected to the receiver and exploratory measurements were made to determine the frequencies producing the maximum emission from the EUT. The receiver was scanned from 150kHz to 30MHz. The detector function was set to peak mode for exploratory measurements while the bandwidth of the analyzer was set to 9kHz. The EUT, support equipment, and interconnecting cables were arranged and manipulated to maximize each emission. Each emission was also maximized by varying: power lines, the mode of operation or data exchange speed, or support equipment whichever determined the worst-case emission. Once the worst case emissions have been identified, the one EUT cable configuration/arrangement and mode of operation that produced these emissions are used for final measurements on the same test site. The analyzer is set to CISPR quasi-peak and average detectors with a 9kHz resolution bandwidth for final measurements. An extension cord was used to connect to a single LISN which powered by EUT. The extension cord was calibrated with LISN, the impedance and insertion loss are compliance with the requirements as stated in ANSI C63.10-2013. FCC ID: 2ACSOGDRD87 Page Number: 9 of 33

Report No.: 1901RSU029-U1 3.3. Radiated Emissions The radiated test facilities consisted of an indoor 3 meter semi-anechoic chamber used for final measurements and exploratory measurements, when necessary. The measurement area is contained within the semi-anechoic chamber which is shielded from any ambient interference. For measurements above 1GHz absorbers are arranged on the floor between the turn table and the antenna mast in such a way so as to maximize the reduction of reflections. For measurements below 1GHz, the absorbers are removed. A MF Model 210SS turntable is used for radiated measurement. It is a continuously rotatable, remote controlled, metallic turntable and 2 meters (6.56 ft.) in diameter. The turn table is flush with the raised floor of the chamber in order to maintain its function as a ground plane. An 80cm high PVC support structure is placed on top of the turntable. For all measurements, the spectrum was scanned through all EUT azimuths and from 1 to 4 meter receive antenna height using a broadband antenna from 30MHz up to the upper frequency shown in 15.33(b)(1) depending on the highest frequency generated or used in the device or on which the device operates or tunes. For frequencies above 1GHz, linearly polarized double ridge horn antennas were used. For frequencies below 30MHz, a calibrated loop antenna was used. When exploratory measurements were necessary, they were performed at 1 meter test distance inside the semi-anechoic chamber using broadband antennas, broadband amplifiers, and spectrum analyzers to determine the frequencies and modes producing the maximum emissions. Sufficient time for the EUT, support equipment, and test equipment was allowed in order for them to warm up to their normal operating condition. The test set-up for frequencies below 1GHz was placed on top of the 0.8 meter high, 1 x 1.5 meter table; and test set-up for frequencies 1-40GHz was placed on top of the 1.5 meter high, 1 x 1.5 meter table. The EUT, support equipment, and interconnecting cables were arranged and manipulated to maximize each emission. Appropriate precaution was taken to ensure that all emissions from the EUT were maximized and investigated. The system configuration, clock speed, mode of operation or video resolution, if applicable, turntable azimuth, and receive antenna height was noted for each frequency found. Final measurements were made in the semi-anechoic chamber using calibrated, linearly polarized broadband and horn antennas. The test setup was configured to the setup that produced the worst case emissions. The spectrum analyzer was set to investigate all frequencies required for testing to compare the highest radiated disturbances with respect to the specified limits. The turntable containing the EUT was rotated through 360 degrees and the height of the receive antenna was varied 1 to 4 meters and stopped at the azimuth and height producing the maximum emission. Each emission was maximized by changing the orientation of the EUT through three orthogonal planes and changing the polarity of the receive antenna, whichever produced the worst-case emissions. According to 3dB Beam-Width of horn antenna, the horn antenna should be always directed to the EUT when rising height. FCC ID: 2ACSOGDRD87 Page Number: 10 of 33

Report No.: 1901RSU029-U1 4. ANTENNA REQUIREMENTS Excerpt from §15.203 of the FCC Rules/Regulations: “An intentional radiator antenna shall be designed to ensure that no antenna other than that furnished by the responsible party can be used with the device. The use of a permanently attached antenna or of an antenna that uses a unique coupling to the intentional radiator shall be considered sufficient to comply with the provisions of this section.”  The antenna of the 80G Radar Level Meter is permanently attached.  There are no provisions for connection to an external antenna. Conclusion: The unit complies with the requirement of §15.203. FCC ID: 2ACSOGDRD87 Page Number: 11 of 33

Report No.: 1901RSU029-U1 5. TEST EQUIPMENT CALIBRATION DATE Radiated Emission - AC1 Instrument Manufacturer Type No. Asset No. Cali. Interval Cali. Due Date EMI Test Receiver R&S ESR7 MRTSUE06001 1 year 2019/08/14 Signal Analyzer R&S FSV40 MRTSUE06218 1 year 2019/04/20 EXA Signal Analyzer Keysight N9010B MRTSUE06452 1 year 2019/07/20 Loop Antenna Schwarzbeck FMZB 1519 MRTSUE06025 1 year 2019/11/09 Bilog Period Antenna Schwarzbeck VULB 9168 MRTSUE06172 1 year 2019/04/12 Broad-Band Horn Antenna Schwarzbeck BBHA9120D MRTSUE06023 1 year 2019/10/20 Broad Band Horn Antenna Schwarzbeck BBHA 9170 MRTSUE06024 1 year 2019/12/17 Micro-Wave Antenna MI-WWAVE 261U-25 MRTSUE06273 N/A N/A Micro-Wave Antenna MI-WWAVE 261E-25 MRTSUE06276 N/A N/A Micro-Wave Antenna MI-WWAVE 261F-25 MRTSUE06275 N/A N/A Micro-Wave Antenna MI-WWAVE 261G MRTSUE06274 N/A N/A RF Signal Generator Keysight E8257D MRTSUE06453 N/A N/A Millimeter wave signal source Keysight E8257DV15 MRTSUE06456 N/A N/A frequency expander Millimeter wave signal source Keysight E8257DV10 MRTSUE06458 N/A N/A frequency expander USB wideband power sensor Keysight U8489A MRTSUE06448 1 year 2019/07/24 Standard Gain Horn Antenna A-INFOMW LB-10-25-A MRTSUE06410 N/A N/A Standard Gain Horn Antenna A-INFOMW LB-15-25-A MRTSUE06409 N/A N/A Waveguide Harmonic Mixer Keysight M1970V MRTSUE06271 N/A N/A Waveguide Harmonic Mixer Keysight M1970W MRTSUE06272 N/A N/A SA Extension Module Keysight N9029AV06 MRTSUE06368 N/A N/A SA Extension Module Keysight N9029AV05 MRTSUE06367 N/A N/A Microwave System Amplifier Agilent 83017A MRTSUE06076 1 year 2019/11/16 Hygrothermograph Testo 608-H1 MRTSUE06403 1 year 2019/08/15 Anechoic Chamber TDK Chamber-AC1 MRTSUE06212 1 year 2019/05/02 FCC ID: 2ACSOGDRD87 Page Number: 12 of 33

Report No.: 1901RSU029-U1 Conducted Emissions - SR2 Instrument Manufacturer Type No. Asset No. Cali. Interval Cali. Due Date EMI Test Receiver R&S ESR3 MRTSUE06185 1 year 2019/04/20 Two-Line V-Network R&S ENV216 MRTSUE06002 1 year 2019/06/15 Two-Line V-Network R&S ENV216 MRTSUE06003 1 year 2019/06/15 Thermohygrometer Testo 608-H1 MRTSUE06404 1 year 2019/08/14 Shielding Anechoic Chamber MIX-BEP Chamber-SR2 MRTSUE06214 N/A N/A Software Version Function e3 v 8.3.5 EMI Test Software FCC ID: 2ACSOGDRD87 Page Number: 13 of 33

Report No.: 1901RSU029-U1 6. MEASUREMENT UNCERTAINTY Where relevant, the following test uncertainty levels have been estimated for tests performed on the EUT as specified in CISPR 16-4-2. This uncertainty represents an expanded uncertainty expressed at approximately the 95% confidence level using a coverage factor of k = 2. Radiated Emission Measurement - AC1 Measuring Uncertainty for a Level of Confidence of 95% (U=2Uc(y)): 9kHz ~ 1GHz: 4.18dB 1GHz ~ 18GHz: 4.76dB AC Conducted Emission Measurement - SR2 Measuring Uncertainty for a Level of Confidence of 95% (U=2Uc(y)): 150kHz~30MHz: ± 3.46dB FCC ID: 2ACSOGDRD87 Page Number: 14 of 33

Report No.: 1901RSU029-U1 7. TEST RESULT 7.1. Summary Company Name: Beijing GODA Instruments Co., LTD. FCC ID: 2ACSOGDRD87 FCC Part Test Description Test Limit Test Test Reference Section(s) Condition Result Fundamental Within the frequency band 15.256(f) Pass Section 7.2 Bandwidth 75-85GHz Fundamental Radiated 15.256(g) Refer to Section 7.3 Pass Section 7.3 Emissions 15.256(h) Unwanted Emissions < FCC 15.209 limits Pass Section 7.4 15.256(i)(B) Antenna Refer to Section 7.5 -- Pass Section 7.5 15.256(j) Requirements 15.255(f)(2) Within the frequency band Frequency stability Radiated Pass Section 7.6 15.215(c) 75-85GHz AC Conducted Line 15.207 Emissions < FCC 15.207 limits N/A Section 7.7 Conducted 150kHz - 30MHz Notes: 1. The radiation measurements are performed in X, Y, Z axis positioning. Only the worst case data is shown in the report. 2. “N/A” means that the test item is not applicable, and the detailed information refers to relevant section. FCC ID: 2ACSOGDRD87 Page Number: 15 of 33

Report No.: 1901RSU029-U1 7.2. Fundmental Bandwidth 7.2.1. Test Limit The fundamental bandwidth of an LPR emission is defined as the width of the signal between two points, one below and one above the center frequency, outside of which all emissions are attenuated by at least 10 dB relative to the maximum transmitter output power when measured in an equivalent resolution bandwidth. (1) The minimum fundamental emission bandwidth shall be 50 MHz for LPR operation under the provisions of this section. (2) LPR devices operating under this section must confine their fundamental emission bandwidth within the 75-85 GHz bands under all conditions of operation. 7.2.2. Test Procedure used KDB890966 D01 Meas level Probing Radars v01r01 Section D. 7.2.3. Test Setting 1. Observe fundamental emission on the spectrum analyzer with a peak detector, 1 MHz RBW and at least 3 MHz VBW. 2. Activate any frequency sweep, step or hop function of the EUT and select “Max Hold” function on the spectrum analyzer. 3. Perform multiple sweeps until the amplitude stabilizes. 4. Determine the 10 dB emission bandwidth. 7.2.4. Test Setup FCC ID: 2ACSOGDRD87 Page Number: 16 of 33

Report No.: 1901RSU029-U1 7.2.5. Test Result Product 80G Radar Level Meter Temperature 24°C Test Engineer Vincent Yu Relative Humidity 54% Test Site AC1 Test Date 2019/02/18 10dB Bandwidth Limit FL (GHz) 76.3851 ＞75 GHz FH (GHz) 80.8676 ＜85 GHz Bandwidth (GHz) 4.4825 ＞50 MHz Result Pass 10dB Bandwidth FCC ID: 2ACSOGDRD87 Page Number: 17 of 33

Report No.: 1901RSU029-U1 7.3. Fundamental Emissions 7.3.1. Test Limit LPR EIRP Emission Limits Frequency band of Average emission limit Peak emission limit operation (EIRP in dBm measured in 1 MHz) (EIRP in dBm measured in 50 MHz) 75 ~ 85GHz -3 34 Note: For a RBW less than 50 MHz, the peak EIRP limit (in dBm) is reduced by 20 log(RBW/50) dB where RBW is the resolution bandwidth in megahertz. For FMCW modulation the correction should not be applied since these signals are narrowband signals with full power within the resolution bandwidth of the SA. 7.3.2. Test Procedure used KDB890966 D01 Meas level Probing Radars v01r01 Section F. TR14-1007 Measurement of FMCW 7.3.3. Test Setting 1. For radiated emission measurements, locate the receive test antenna at a far field distance boresighted on the LPR transmit antenna. Adjust the LPR and the test antenna for maximum main beam coupling. 2. Set the spectrum analyzer frequency span to enable viewing the entire sweep frequency span of the LPR signal. 3. Set the spectrum analyzer frequency span to enable viewing the entire sweep frequency span of the LPR signal. 4. Calculate the dwell time, TD, of the sweep frequency signal per MHz of the sweep frequency span TD = TS/ΔF Where: TS is the signal sweep frequency time in seconds ΔF is the signal sweep frequency span in MHz 5. Set the detector to peak mode. 6. Set the RBW to 1 MHz. 7. Perform sufficient multiple scans on the spectrum analyzer in maximum hold with a sweep time suitable for displaying the variation in the signal level over the frequency span. 8. Record the maximum signal level. This is the peak value of the LPR signal. FCC ID: 2ACSOGDRD87 Page Number: 18 of 33

Report No.: 1901RSU029-U1 9. Calculate the average factor Average factor = (TD) / cycle time Where: Cycle time is the total time for a complete cycle of the signal including retrace and any other latency times. 10. Determine the average by multiplying the maximum signal level obtained in Step 8 by the average factor. According to the manufacturer’s declaration, the parameter of the FMCW modulation as below: Chirp Bandwidth (ΔF) Frequency sweep time (TS) Cycle time 4GHz 165us 185us Therefore: TD = TS/ΔF = 0.04125us/MHz Average factor = 10*log[(TD) / cycle time] = 10*log(0.04125/185) = -36.52 (dB) 7.3.4.Test Setup FCC ID: 2ACSOGDRD87 Page Number: 19 of 33

Report No.: 1901RSU029-U1 7.3.5.Test Results Product 80G Radar Level Meter Temperature 23°C Test Engineer Vincent Yu Relative Humidity 54% Test Site AC1 Test Date 2019/02/13 Frequency Average Factor EIRP (dBm) Limit (dBm) Result (GHz) (dB) Peak Average Peak Average 80 -36.52 22.20 -14.32 34 -3 Pass Note: Average EIRP (dBm) = Peak EIRP (dBm) + Average Factor (dB) Peak EIRP FCC ID: 2ACSOGDRD87 Page Number: 20 of 33

Report No.: 1901RSU029-U1 7.4. Unwanted Emissions 7.4.1. Test Limit Unwanted emissions from LPR devices shall not exceed the general emission limit in §15.209. FCC Part 15.209 Limit Frequency (MHz) Field Strength (uV/m) Measurement Distance (m) 0.009 ~ 0.490 2400/F(kHz) 300 0.490 ~ 1.705 24000/F(kHz) 30 1.705 ~ 30.0 30 30 30 ~ 80 100** 3 80 ~ 216 150** 3 216 ~ 960 200** 3 Above 960 500 3 Note 1: The lower limit shall apply at the transition frequency. Note 2: Distance refers to the distance in meters between the measuring instrument antenna and the closed point of any part of the device or system. Note 3: E field strength (dBuV/m) = 20 log E field strength (uV/m). Note 4: The provisions in §15.35(b) and (c) of this part that require emissions to be averaged over a 100 millisecond period and that limits the peak power to 20 dB above the average limit do not apply to devices operating under paragraphs (a) through (l) of §15.256. 7.4.2. Test Procedure used KDB890966 D01 Meas level Probing Radars v01r01 Section D. ANSI C63.10 Section 6.3 to 6.6 7.4.3. Test Procedure Measurement of harmonic and spurious emissions below 40 GHz 1. Analyzer center frequency was set to the frequency of the radiated spurious emission of interest 2. RBW = as specified in Table 1 3. VBW ≥ 3 x RBW 4. Detector: The emission limits shown in the above table are based on measurements employing a CISPR quasi-peak detector except for the frequency bands 9-90 kHz, 110-490 kHz and above 1000 MHz. Radiated emission limits in these three bands are based on measurements employing an average detector. 5. Sweep time = auto couple 6. Trace mode = max hold, trace was allowed to stabilize FCC ID: 2ACSOGDRD87 Page Number: 21 of 33

Report No.: 1901RSU029-U1 Measurement of harmonic and spurious emissions above 40 GHz 1. Connect the test antenna covering the appropriate frequency range to a spectrum analyzer via an external mixer. 2. Set spectrum analyzer RBW = 1MHz, VBW = 3MHz, average detector. 3. Maximize all observed emissions. Note the maximum power indicated on the spectrum analyzer. Adjust this reading, if necessary, by the conversion loss of the external mixer used at the frequency under investigation and the external mixer IF cable loss. 4. Calculate the maximum field strength of the emission at the measurement distance 5. Repeat the preceding sequence for every emission observed in the frequency band under investigation. Table 1 - RBW as a function of frequency Frequency RBW 9 ~ 150 kHz 200 ~ 300 Hz 0.15 ~ 30 MHz 9 ~ 10 kHz 30 ~ 1000 MHz 100 ~ 120 kHz > 1000 MHz 1 MHz 7.4.4.Test Setup 30MHz ~ 1GHz Test Setup: FCC ID: 2ACSOGDRD87 Page Number: 22 of 33

Report No.: 1901RSU029-U1 1GHz ~ 40GHz Test Setup: Above 40GHz Test Setup: FCC ID: 2ACSOGDRD87 Page Number: 23 of 33

Report No.: 1901RSU029-U1 7.4.5.Test Result Product 80G Radar Level Meter Temperature 23°C Test Engineer Vincent Yu Relative Humidity 54% Test Site AC1 Test Date 2019/01/29 Test Range Below 40GHz Frequency Reading Level Factor Measure Level Limit Margin Detector Polarization (MHz) (dBμV) (dB) (dBμV/m) (dBμV/m) (dB) 720.2 12.7 22.4 35.1 46.0 -10.9 QP Horizontal 760.4 19.0 22.9 41.9 46.0 -4.1 QP Horizontal 840.4 15.6 23.7 39.3 46.0 -6.7 QP Horizontal 920.5 13.4 24.7 38.1 46.0 -7.9 QP Horizontal 560.1 6.9 19.7 26.6 46.0 -19.4 QP Vertical 760.4 11.6 22.9 34.5 46.0 -11.5 QP Vertical 840.4 10.0 23.7 33.7 46.0 -12.3 QP Vertical 890.4 12.5 24.3 36.8 46.0 -9.2 QP Vertical 1119.0 36.8 -5.4 31.4 54.0 -22.6 AV Horizontal 2215.5 30.7 -0.6 30.1 54.0 -23.9 AV Horizontal 5207.5 26.8 6.4 33.2 54.0 -20.8 AV Horizontal 8012.5 26.2 13.7 39.9 54.0 -14.1 AV Horizontal 1365.5 40.7 -3.9 36.8 54.0 -17.2 AV Vertical 2283.5 38.5 -0.5 38.0 54.0 -16.0 AV Vertical 4706.0 34.8 5.5 40.3 54.0 -13.7 AV Vertical 8786.0 33.4 13.3 46.7 54.0 -7.3 AV Vertical 18055.0 25.9 8.4 34.3 54.0 -19.7 AV Horizontal 26668.0 23.9 12.3 36.2 54.0 -17.8 AV Horizontal 30573.0 25.8 12.1 37.9 54.0 -16.1 AV Horizontal 34456.0 24.2 14.6 38.8 54.0 -15.2 AV Horizontal 18077.0 24.9 8.5 33.4 54.0 -20.6 AV Vertical 19936.0 25.9 7.9 33.8 54.0 -20.2 AV Vertical 26690.0 23.1 11.7 34.8 54.0 -19.2 AV Vertical 34005.0 23.2 14.1 37.3 54.0 -16.7 AV Vertical Note: Measure Level (dBμV/m) = Reading Level (dBμV) + Factor (dB) Factor (dB) = Cable Loss (dB) + Antenna Factor (dB/m) - Pre_Amplifier Gain (dB) FCC ID: 2ACSOGDRD87 Page Number: 24 of 33

Report No.: 1901RSU029-U1 Product 80G Radar Level Meter Temperature 23°C Test Engineer Vincent Yu Relative Humidity 54% Test Site AC1 Test Date 2019/03/01 Test Range Above 40GHz Frequency Reading Level Factor Measure Level Measure Limit Margin Detector Result (GHz) @ 0.5m (dB) @ 0.5m Level @ 3m (dBμV/m) (dB) (dBμV) (dBμV/m) (dBμV/m) 40.2 9.5 44.6 54.1 38.5 54.0 -15.5 AV Pass 41.6 11.0 44.9 55.9 40.3 54.0 -13.7 AV Pass 45.7 12.1 45.2 57.3 41.7 54.0 -12.3 AV Pass 49.1 14.0 45.8 59.8 44.2 54.0 -9.8 AV Pass 50.4 24.0 41.1 65.1 49.5 54.0 -4.5 AV Pass 134.5 4.9 57.4 62.3 46.7 54.0 -7.3 AV Pass 164.9 4.3 60.0 64.3 48.7 54.0 -5.3 AV Pass 194.3 3.9 61.4 65.3 49.7 54.0 -4.3 AV Pass Note: 1. Measure Level @ 0.5m = Reading Level @0.5m + Factor Factor (dB) = Cable Loss (dB) + Antenna Factor (dB/m) + Mixer Conversion Loss (dB) 2. Measure Level @ 3m = Measure Level @ 0.5m + 20 * log(0.5m / 3m) FCC ID: 2ACSOGDRD87 Page Number: 25 of 33

Report No.: 1901RSU029-U1 7.5. Antenna Requirements 7.5.1. Test Limit 1. Antenna beamwidth: LPR devices operating under the provisions of this section within the 75-85 GHz band must use an antenna with a -3 dB beamwidth no greater than 8 degrees. 2. Antenna side lobe gain: LPR devices operating under the provisions of this section must limit the side lobe antenna gain relative to the main beam gain for off-axis angles from the main beam of greater than 60 degrees to the levels provided in below table. Antenna Side Lobe Gain Limit Frequency range (GHz) Antenna sidelobe gain limit relative to main beam gain (dB) 75 ~ 85 -38 7.5.2. Test Procedure used The antenna parameters of the LPR are declared by the manufacturer. No test needs to be conducted. 7.5.3. Test Setting N/A 7.5.4. Test Setup N/A 7.5.5. Test Result According to the declaration of manufacturer, the parameter of the antennas is shown as below table: Model No. Max. Side lobe gain (dB) Max. Beamwidth Antenna Side Lobe Max. Beamwidth (°) Gain Limit (dB) Limit (°) GDRD81 -45.2 6 -38 8 GDRD82 -45.8 6 -38 8 GDRD83 -39.1 8 -38 8 GDRD84 -53.1 3 -38 8 GDRD85 -45.6 6 -38 8 GDRD87 -55.2 3 -38 8 GDRD88 -46.1 6 -38 8 GDRD89 -52.9 3 -38 8 Therefore, it complies with the antenna requirement. FCC ID: 2ACSOGDRD87 Page Number: 26 of 33

Report No.: 1901RSU029-U1 7.6. Frequency Stability 7.6.1.Test Limit 1. As specified in Section 15.256(f)(2), LPR devices operating under this section must confine their fundamental emission bandwidth within the 75-85 GHz bands under all conditions of operation. 2. As specified in Section 15.215(c), the bandwidth of the fundamental emission must be contained within the frequency band over the temperature range -20 to +50 degrees Celsius with an input voltage variation of 85% to 115% of rated input voltage. Frequency stability is to be measured according to Section 2.1055 at the highest and lowest frequency of operation and with the modulation that produces the widest emission bandwidth. 7.6.2.Test Procedure used ANSI C63.10 Section 6.8 7.6.3.Test Procedure 1. Arrange EUT and test equipment according Section 7.6.4. 2. With the EUT at ambient temperature (20 °C) and voltage source set to the EUT nominal operating voltage (24VDC, 100%) 3. RBW = 1MHz, VBW = 3MHz 4. Detector = Peak 5. Trace Mode = Max Hold 6. Record the Low and high frequencies (fL and fH) of the fundamental frequency emission which is defined as the width of the signal between two points, one below and one above the center frequency, outside of which all emissions are attenuated by at least 10 dB relative to the maximum transmitter output power. 7. Vary EUT power supply between 85% and 115% of nominal, and record the frequency excursion of the EUT emission mask. 8. Set the power supply to 100% nominal setting, and raise EUT operating temperature to 50 °C. 9. Record the fL and fH of the fundamental frequency emission. 10. Repeat step 9 at each 10°C increment down to -20 °C. FCC ID: 2ACSOGDRD87 Page Number: 27 of 33

Spectrum Lou Euold Analyzer Variable power Supply

Report No.: 1901RSU029-U1 7.6.5.Test Result Test Engineer Vincent Yu Temperature -20 ~ 50°C Test Time 2019/02/18 ~ 2019/02/20 Relative Humidity 52%RH Test Mode Mode 1 Test Site TR3 Voltage Power Temp fL fH Limit Result (%) (VDC) (℃) (GHz) (GHz) (GHz) - 20 76.3842 80.8683 75 ~ 85 Pass - 10 76.3844 80.8681 75 ~ 85 Pass 0 76.3845 80.8682 75 ~ 85 Pass + 10 76.3847 80.8679 75 ~ 85 Pass 100% 24.0 + 20 (Ref) 76.3851 80.8676 75 ~ 85 Pass + 30 76.3851 80.8673 75 ~ 85 Pass + 40 76.3852 80.8675 75 ~ 85 Pass + 50 76.3855 80.8676 75 ~ 85 Pass 115% 27.6 + 20 76.3852 80.8677 75 ~ 85 Pass 85% 20.4 + 20 76.3851 80.8678 75 ~ 85 Pass FCC ID: 2ACSOGDRD87 Page Number: 29 of 33

Report No.: 1901RSU029-U1 7.7. AC Conducted Emissions Measurement 7.7.1.Test Limit FCC 15.207 Limits Frequency (MHz) QP (dBuV) AV (dBuV) 0.15 ~ 0.50 66 ~ 56 56 ~ 46 0.50 ~ 5.0 56 46 5.0 ~ 30 60 50 Note 1: The lower limit shall apply at the transition frequencies. Note 2: The limit decreases linearly with the logarithm of the frequency in the range 0.15MHz to 0.5MHz. 7.7.2.Test Setup 7.7.3.Test Result The EUT is powered by DC source, so this requirement doesn’t apply. FCC ID: 2ACSOGDRD87 Page Number: 30 of 33

Report No.: 1901RSU029-U1 8. CONCLUSION The data collected relate only the item(s) tested and show that the 80G Radar Level Meter is in compliance with Part 15C of the FCC Rules. The End FCC ID: 2ACSOGDRD87 Page Number: 31 of 33

Report No.: 1901RSU029-U1 Appendix A - Test Setup Photograph Refer to “1901RSU029-UT” file. FCC ID: 2ACSOGDRD87 Page Number: 32 of 33

Report No.: 1901RSU029-U1 Appendix B - EUT Photograph Refer to “1901RSU029-UE” file. FCC ID: 2ACSOGDRD87 Page Number: 33 of 33


Document Created: 2019-04-11 05:03:36
Document Modified: 2019-04-11 05:03:36
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