Test Report

FCC ID: INGRU-G3TB

Test Report

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FCCID_4032712

     FCC Part 74 Subpart H
       EMI TEST REPORT
                             of
E.U.T.             : Handheld Transmitter
FCC ID.            : INGRU-G3TB
Model No.          : RU-G3TB
Working Frequency : 470~608 MHz

                             for

APPLICANT : JTS Professional Co., Ltd.
ADDRESS      : NO. 148, 9TH INDUSTRY RD., TA-LI INDUSTRIAL
               PARK,TAI-LI CITY, TAIWAN, R.O.C.


                       Test Performed by




         ELECTRONICS TESTING CENTER (ETC) , TAIWAN
               NO. 34. LIN 5, DINGFU VIL., LINKOU DIST.,
               NEW TAIPEI CITY, TAIWAN, 24442, R.O.C.
                 TEL : (02)26023052 FAX : (02)26010910
               http:// www.etc.org.tw ; e-mail:emc@etc.org.tw

                 Report Number : 17-07-RBF-021




                                                                Rev. 2.0


RUETC Report No.: 17-07-RBF-021                                              FCC ID: INGRU-G3TB




                  TEST REPORT CERTIFICATION

 Applicant                 : JTS Professional Co., Ltd.
                               NO. 148, 9TH INDUSTRY RD., TA-LI INDUSTRIAL PARK,
                               TAI-LI CITY, TAIWAN, R.O.C.
 Manufacturer              : JTS Professional Co., Ltd.
                               NO. 148, 9TH INDUSTRY RD., TA-LI INDUSTRIAL PARK,
                               TAI-LI CITY, TAIWAN, R.O.C.


 Description of EUT        :
 a) Type of EUT            : Handheld Transmitter
 b) Trade Name             : JTS
 c) Model No.              : RU-G3TB
 d) FCC ID                 : INGRU-G3TB
 e) Working Frequency      : 470~608 MHz
 f) Power Supply           : DC 3V Battery

Regulation Applied : FCC Rules and Regulations Part 74 Subpart H

I HEREBY CERTIFY THAT; The data shown in this report were made in accordance with the
procedures given in ANSI C63.10-2013 and the energy emitted by the device was founded to be
within the limits applicable. I assume full responsibility for accuracy and completeness of these
data.


         Issued Date :            Sep. 25, 2018



         Test Engineer :
                                     (Brian Huang, Engineer )



         Approve & Authorized Signer :
                                                    S. S. Liou, Section Manager
                                                  EMC Dept. II of ELECTRONICS
                                                   TESTING CENTER, TAIWAN




                                                                                            Rev. 2.0


RUETC Report No.: 17-07-RBF-021                                                                                                            FCC ID: INGRU-G3TB




Table of Contents                                                                                                                                            Page
1. GENERAL INFORMATION ............................................................................................................................... 1
1.1 PRODUCT DESCRIPTION........................................................................................................................................... 1
1.2 TEST METHODOLOGY.............................................................................................................................................. 1
1.3 TEST FACILITY ........................................................................................................................................................ 1
2. REQUIREMENTS OF PROVISIONS................................................................................................................. 2
2.1   DEFINITION ............................................................................................................................................................. 2
2.2   FREQUENCIES AVAILABLE ...................................................................................................................................... 2
2.3   REQUIREMENTS FOR RADIO EQUIPMENT ON CERTIFICATION .................................................................................. 2
2.4   LABELING REQUIREMENT ....................................................................................................................................... 3
3. OUTPUT POWER MEASUREMENT ................................................................................................................ 4
3.1   PROVISION APPLICABLE .......................................................................................................................................... 4
3.2   MEASUREMENT PROCEDURE ................................................................................................................................... 4
3.3   TEST DATA.............................................................................................................................................................. 4
3.4   TEST EQUIPMENT .................................................................................................................................................... 5
4. MODULATION CHARACTERISTICS .............................................................................................................. 6
4.1   PROVISIONS APPLICABLE ........................................................................................................................................ 6
4.2   MEASUREMENT METHOD ........................................................................................................................................ 6
4.3   MEASUREMENT INSTRUMENT ................................................................................................................................. 7
4.4   MEASUREMENT RESULT .......................................................................................................................................... 7
5. OCCUPIED BANDWIDTH OF EMISSION....................................................................................................... 9
5.1   PROVISIONS APPLICABLE ........................................................................................................................................ 9
5.2   MEASUREMENT METHOD ........................................................................................................................................ 9
5.3   OCCUPIED BANDWIDTH TEST EQUIPMENT .............................................................................................................. 9
5.4   BANDWIDTH MEASURED ....................................................................................................................................... 10
6. FIELD STRENGTH OF EMISSION ................................................................................................................. 14
6.1   PROVISIONS APPLICABLE ...................................................................................................................................... 14
6.2   MEASUREMENT PROCEDURE ................................................................................................................................. 14
6.3   MEASURING INSTRUMENT ..................................................................................................................................... 16
6.4   MEASURING DATA ................................................................................................................................................ 17
6.5   RADIATED MEASUREMENT PHOTOS ...................................................................................................................... 25
7. FREQUENCY STABILITY MEASUREMENT ............................................................................................... 27
7.1   PROVISIONS APPLICABLE ...................................................................................................................................... 27
7.2   MEASUREMENT PROCEDURE ................................................................................................................................. 27
7.3   MEASUREMENT INSTRUMENT ............................................................................................................................... 28
7.4   MEASUREMENT DATA ........................................................................................................................................... 29
8 CONDUCTED EMISSION MEASUREMENT ................................................................................................. 30
8.1 STANDARD APPLICABLE........................................................................................................................................ 30




                                                                                                                                                                        Rev. 2.0


ETC Report No.: 17-07-RBF-021                                                     Sheet 1 of 30 Sheets
                                                                                 FCC ID: INRU-G3TB



1. GENERAL INFORMATION

   1.1 Product Description
           a) Type of EUT             : Handheld Transmitter
           b) Trade Name              : JTS
           c) Model No.               :   RU-G3TB
           d) FCC ID                  :   INGRU-G3TB
           e) Working Frequency       :   470~608 MHz
           f) Power Supply            :   DC 3V Battery


   1.2 Test Methodology
         Both conducted and radiated testing were performed according to the procedures in
         ANSI C63.10-2013. Test also follow “TIA-603-D(2010)-Land Mobile FM or PM
         Communications Equipment Measurement and Performance Standsrds” and section
         2.1046, 2.1047, 2.1049, 2.1051, 2.1053, and 2.1055 of Part 2 of CFR 47.

         Measueement Software
         Software      Version                     Note
         e3            Version 6.100618b           Radiated Emission Test
         e3            Version 6.100421            Conducted Emission Test



   1.3 Test Facility
         The open area test site and conducted measurement facility used to collect the radiated
         data is located on the roof top of Building at No.34, Lin 5, Dingfu Vil., Linkou Dist.,
         New Taipei City, Taiwan 24442, R.O.C.
         This site is FCC 2.948 listed and accepted in a letter dated Jan. 29, 2014.
         Registration Number: 90589




                                                                                                 Rev. 2.0


ETC Report No.: 17-07-RBF-021                                                   Sheet 2 of 30 Sheets
                                                                               FCC ID: INRU-G3TB



2. REQUIREMENTS OF PROVISIONS
   2.1 Definition
         Intentional radiator:
         A device that intentionally generates and emits radio frequency energy by radiation or
         induction.

   2.2 Frequencies Available
         According to sec. 74.802 of Part 74, the following frequencies are available for low
         power auxiliary station :

                                             Frequencies (MHz)

                                26.100-26.480         455.000-456.000
                                54.000-72.000         470.000-488.000
                                76.000-88.000         488.000-494.000
                                161.625-161.775       494.000-608.000
                                174.000-216.000       614.000-806.000
                                450.000-451.000       944.000-952.000


   2.3 Requirements for Radio Equipment on Certification

         (1) RF Output Power
            For transmitters, the power output shall be measured at the RF output terminals.


         (2) Modulation Characteristics
            For Voice Modulated Communication Equipment, a curve or equivalent data
            showing the frequency response of the audio modulating circuit over a range of 100
            to 5000 Hz shall be submitted.


         (3) Occupied Bandwidth
            For radiotelephone transmitter, other than single sideband or indenpent sideband
            transmitter, when modulateed by a 2.5kHz tone at an input level 16 dB greater than
            that necessary to produce 50 percent modulation.


         (4) Spurious Emissions at Antenna Terminals
            The radio frequency voltage or power generated within the equipment and appearing
            on a spurious frequency shall be checked at the equipment output terminal when
            properly loaded with a suitable artificial antenna.




                                                                                                Rev. 2.0


ETC Report No.: 17-07-RBF-021                                                   Sheet 3 of 30 Sheets
                                                                               FCC ID: INRU-G3TB


         (5) Field Strength of Spurious Emissions
            Measurements shall be made to detect spurious emission that may be radiated
            directly from the cabinet, control circuits, power leads, or intermediate circuit
            elements under normal condition of installation and operation.

         (6) Frequencies Tolerance
            a) The frequency stability shall be measured with variation of ambient temperature.
            b) The frequency stability shall be measured with variation of primary supply voltage.



   2.4 Labeling Requirement
       Each equipment for which a type acceptance application is filed on or after May 1,1981,
       shall bear an identification plate or label pursuant to §2.925(Identification of equipment)
       and §2.926(FCC identifier).




                                                                                               Rev. 2.0


ETC Report No.: 17-07-RBF-021                                                      Sheet 4 of 30 Sheets
                                                                                  FCC ID: INRU-G3TB



3. OUTPUT POWER MEASUREMENT



   3.1 Provision Applicable
       According to §74.861(e)(1)(ii), the output power shall not exceed 250 milliwatts.


   3.2 Measurement Procedure
       1. Check the calibration of the measuring instrument using either an internal calibrator or
          a known signal from an external generator.
       2. Position the EUT as shown in figure 1, and Install new batteries in the EUT. Turn on
          the EUT ant set it to any one convenient frequency within its operating range.
       3. Apply a 2.5 kHz modulation signal to EUT. Record the readings on the instrument.
       4. Repeat above procedures until all frequencies measured were complete.



                          Figure 1: Transmit power measurement configuration.

                                                                      Radio
                            EUT                                   Communication
                                                                     Test Set


                                                                    Power
                                                                    Meter




   3.3 Test Data
              Operated mode : TX                        Test Date     : Aug. 27, 2018
              Temperature   : 23°C                      Humidity      : 68 %


                   Frequency               Transmit Power                    Limit
                     (MHz)             (dBm)             (mW)                (mW)
                    520.050             5.20              3.311              250.0
                    607.925             9.10              8.128              250.0




                                                                                                  Rev. 2.0


ETC Report No.: 17-07-RBF-021                                         Sheet 5 of 30 Sheets
                                                                     FCC ID: INRU-G3TB


   3.4 Test Equipment


      Equipment            Manufacturer   Model No. Calibration Date Next Cal. Date
    POWER METER                            ML2487A    2018/05/23      2019/05/22
                                ANRITSU
      +SENSOR                             +MA2491A
    Communications
                            AEROFLEX       2945B        2018/01/10     2019/01/09
    Service Monitor




                                                                                     Rev. 2.0


ETC Report No.: 17-07-RBF-021                                                 Sheet 6 of 30 Sheets
                                                                             FCC ID: INRU-G3TB



4. MODULATION CHARACTERISTICS
   4.1 Provisions Applicable

       According to § 2.1047 (a), for Voice Modulated Communication Equipment, the
       frequency response of the audio modulating circuit over a range of 100 to 5000 Hz shall
       be measured.


   4.2 Measurement Method

       A) Modulation Limit

       1. Position the EUT as shown in figure 2, adjust the audio input frequency to 100 Hz and
          the input level from 0V to maximum permitted input voltage with recording each
          carrier frequency deviation responding to respective input level.

       2. Repeat step 1 with changing the input frequency for 200, 500, 1000, 3000, and 5000
          Hz in sequence.


       B) Frequency response of all circuits

       1. Position the EUT as shown in figure 2.

       2. Vary the modulating frequency from 100 Hz to 15000 Hz with constant input voltage
          (derived from 5.4(a) of this test report), and observe the change in output.

                 Figure 2 : Modulation characteristic measurement configuration

                                                               Radio
                        EUT                                Communication
                                                              Test Set


                                                             Spectrum
                                                             Analyzer




                                                                                             Rev. 2.0


ETC Report No.: 17-07-RBF-021                                                                                                     Sheet 7 of 30 Sheets
                                                                                                                                 FCC ID: INRU-G3TB




   4.3 Measurement Instrument

           Equipment                                                Manufacturer          Model No. Calibration Date Next Cal. Date
      Communications
                                                                AEROFLEX                       2945B              2018/01/10                  2019/01/09
      Service Monitor
      Spectrum Analyzer                                         Rohde & Schwarz                FSP40              2017/11/02                  2018/11/01




   4.4 Measurement Result

                     RF Frequency : 470MHz

                                Test Date : Aug. 27, 2018                          Temperature : 26 °C                           Humidity : 68 %

                     A). Frequency response

                                                      100 Hz              200 Hz           500 Hz                 1kHz               3 kHz                5 kHz

                          55
                          54
                          53
                          52
                          51
                          50
                          49
                          48
                          47
                          46
                          45
                          44
                          43
                          42
                          41
                          40
                          39
                          38
                          37
                          36
                          35
       Output Level (V)




                          34
                          33
                          32
                          31
                          30
                          29
                          28
                          27
                          26
                          25
                          24
                          23
                          22
                          21
                          20
                          19
                          18
                          17
                          16
                          15
                          14
                          13
                          12
                          11
                          109
                            87
                             65
                              43
                               21
                                0
                                    1   5   10   20     30     40    50   60   70    80   90    100   150   200   250    300   350   400     450    500   800    1000

                                                                                                                                                   Input Level (mV)




                                                                                                                                                          Rev. 2.0


ETC Report No.: 17-07-RBF-021                                                                                                                                           Sheet 8 of 30 Sheets
                                                                                                                                                                       FCC ID: INRU-G3TB


                                      B). Modulation Limit

                                                             100 Hz             200 Hz                 500 Hz                  1kHz               3 kHz              5 kHz
 kHz
                            75
                            70
                            65
                            60
                            55
                            50
                            45
                            40
                            35
                            30
                            25
                            20
                            15
                            10
                            5
                            0
                                  1         5         10     20     30    40     50    60     70       80       90       100   150    200   250    300    350    400    450        500    800    1000
                                                                                                                                                   Input Level (mV)


                                      C). Frequency response of all circuits



                                 20



                                 10
  Frequency Response (dB)




                                  0



                             -10



                             -20



                             -30
                                      0.1       0.2    0.3    0.4   0.5   0.6   0.7   0.8   0.9    1        2        3     4    5      6    7      8      9     10     11     12     13     14    15

                                                                                                                                                                Input Frequency (kHz)




                                                                                                                                                                                                 Rev. 2.0


ETC Report No.: 17-07-RBF-021                                                    Sheet 9 of 30 Sheets
                                                                                FCC ID: INRU-G3TB



5. OCCUPIED BANDWIDTH OF EMISSION
   5.1 Provisions Applicable

       According to §2.1049 (c)(1), For radiotelephone transmitter, other than single sideband or
       indenpent sideband transmitter, when modulateed by a 2.5kHz tone at an input level 16
       dB greater than that necessary to produce 50 percent modulation.
       According to §74.861( e)(5), the frequency emission bandwidth shall not exceed 200 kHz.


   5.2 Measurement Method
       1. Check the calibration of the measuring instrument using either an internal calibrator or
          a known signal from an external generator.

       2. Position the EUT as shown in figure 3, and Install new batteries in the EUT. Turn on
          the EUT ant set it to any one convenient frequency within its operating range. Set a
          reference level on the measuring instrument equal to the highest peak value.

       3. Apply a 2.5 kHz modulation signal to EUT and measure the frequencies of the
          modulated signal from the EUT where it is the specified number of dB below the
          reference level set in step 2. This is the occupied bandwidth specified.

                   Figure 3 : Occupied bandwidth measurement configuration


                                                                    Radio
                            EUT                                 Communication
                                                                   Test Set


                                                                  Spectrum
                                                                  Analyzer




   5.3 Occupied Bandwidth Test Equipment

           Equipment              Manufacturer       Model No. Calibration Date Next Cal. Date
      Communications              AEROFLEX            2945B
                                                                 2018/01/10      2019/01/09
      Service Monitor
      Spectrum Analyzer           Rohde & Schwarz      FSP40        2017/11/02          2018/11/01




                                                                                                Rev. 2.0


ETC Report No.: 17-07-RBF-021                                               Sheet 10 of 30 Sheets
                                                                           FCC ID: INRU-G3TB




   5.4 Bandwidth Measured

         5.4.1 Input Level Derived

         RF Frequency : 470MHz

             Test Date : Aug. 27, 2018         Temperature : 26 °C         Humidity : 68 %

               Input Audio Frequency : 2.5 kHz, Sine Wave

                          Frequency Devition
     kHz
       70

        60

        50

        40

        30

        20

        10

         0


                                                                                     Input Level (mV)

             The Level input to produce 50﹪modulation is 50 mV, therefore the magnitude 16 dB
             greater than it is 315 mV.




                                                                                           Rev. 2.0


ETC Report No.: 17-07-RBF-021                                           Sheet 11 of 30 Sheets
                                                                       FCC ID: INRU-G3TB


         5.4.2 Occupied Bandwidth Plotted

           Test Date : Aug. 25, 2018        Temperature : 23 °C        Humidity : 68 %


                   RF Frequency (MHz)          26 dB Bandwidth (kHz)
                         470.000                       120.0
                         607.875                       127.0




                                                                                       Rev. 2.0


ETC Report No.: 17-07-RBF-021                                                                  Sheet 12 of 30 Sheets
                                                                                              FCC ID: INRU-G3TB


                                                               * RBW   3 kHz   Marker 1 [T1 ]
                                                                VBW 10 kHz                   3.17 dBm
               Ref   20 dBm           Att   50 dB               SWT 30 ms         469.956000000 MHz

               20                                                              ndB [T1]     26.00 dB
                                                                               BW 120.000000000 kHz
                                                                               Temp 1 [T1 ndB]           A
               10
                                      1                                                    -22.21 dBm
        1 PK
                                                                                  469.941000000 MHz
        VIEW
               0                                                               Temp 2 [T1 ndB]
                                                                                           -23.87 dBm
                                                                                  470.061000000 MHz
               -10



               -20               T1
                                                                                T2



               -30



               -40



               -50



               -60



               -70


               -80

               Center 470 MHz                       25 kHz/                               Span 250 kHz


                                                      470-腰掛




       Date: 18.SEP.2017        15:06:59




                                                                                                              Rev. 2.0


ETC Report No.: 17-07-RBF-021                                                             Sheet 13 of 30 Sheets
                                                                                         FCC ID: INRU-G3TB


                                                        * RBW   3 kHz    Marker 1 [T1 ]
                                                         VBW 10 kHz                    4.27 dBm
              Ref   20 dBm            Att   50 dB       * SWT   225 ms      607.954500000 MHz

              20                                                         ndB [T1]     26.00 dB
                                                                         BW 120.500000000 kHz
                                                                         Temp 1 [T1 ndB]           A
              10
                                      1                                              -21.40 dBm
       1 PK
                                                                            607.940000000 MHz
       VIEW
              0                                                          Temp 2 [T1 ndB]
                                                                                     -21.00 dBm
                                                                            608.060500000 MHz
              -10


                                 T1                                       T2
              -20



              -30



              -40



              -50



              -60



              -70


              -80

              Center 608 MHz                        25 kHz/                         Span 250 kHz




      Date: 18.SEP.2017         15:18:03




                                                                                                         Rev. 2.0


ETC Report No.: 17-07-RBF-021                                                              Sheet 14 of 30 Sheets
                                                                                          FCC ID: INRU-G3TB




6. FIELD STRENGTH OF EMISSION
   6.1 Provisions Applicable
       According to §2.1053, measurements shall be made to detect spurious emission that may
       be radiated directly from the cabinet, control circuits, power leads, or intermediate circuit
       elements under normal condition of installation and operation. Information submitted
       shall include the relative radiated power of spurious emission with reference to the rated
       power output of the transmitter, assuming all emissions are radiated from a halfwave
       dipole antenna.

       According to §74.861(e)(6), the mean power of emissions shall be attenuated below the
       mean output power of the transmitter in accordance with the follwing sceedule:
       (i) on any frequency removed from the operating frequency by more than 50 percent up
           to and including 100 percent of the authorized bandwidth: at least 25 dB.
       (ii)on any frequency removed from the operating frequency by more than 100 percent up
           to and including 250 percent of the authorized bandwidth: at least 35 dB.
       (iii)    on any frequency removed from the operating frequency by more than 250
           percent of the authorized bandwidth shall be attenuated below the unmodulated carrier
           by at least 43 plus 10 Log(output power in watts) dB.

   6.2 Measurement Procedure
       1. Setup the configuration per figure 4 and 5 for frequencies measured below and above 1
          GHz respectively.
       2. For emission frequencies measured below and above 1 GHz, set the spectrum analyzer
          on a 100 kHz and 1 MHz resolution bandwidth respectively.
       3. The search antenna is to be raised and lowered over a range from 1 to 4 meters in
          horizontally polarized orientation. Position the highness when the highest value is
          indicated on spectrum analyzer, then change the orientation of EUT on test table over
          a range from 0。 to 360。with a speed as slow as possible, and keep the azimuth that
          highest emission is indicated on the spectrum analyzer. Vary the antenna position
          again and record the highest value as a final reading. A RF test receiver is also used to
          confirm emissions measured.
       4. Repeat step 3 until all frequencies need to be measured were complete.
       5. Repeat step 5 with search antenna in vertical polarized orientations.
       6. Check the three frequencies of highest emission with varying the placement of cables
          associated with EUT (if any) to obtain the worse case and record the result.
        Note:
        According to 12.7.2(d)(2) of ANSI C63.10-2013:

           E[dBμV/m] = EIRP[dBm] + 95.2, for d = 3 m.

         12.7.2(e) of ANSI C63.10-2013:
         For conducted measurements below 1000 MHz, the field strength shall be computed as specified in item
         d), and then an additional 4.7 dB shall be added as an upper bound on the field strength that would be
         observed on a test range with a ground plane for frequencies between 30 MHz and 1000 MHz, or an
         additional 6 dB shall be added for frequencies below 30 MHz.



                                                                                                           Rev. 2.0


ETC Report No.: 17-07-RBF-021                                                   Sheet 15 of 30 Sheets
                                                                               FCC ID: INRU-G3TB



                        Figure 4 : Frequencies measured below 1 GHz configuration


                                                                               Antenna Tower



                                         3m                                        Search
                                                                                   Antenna
                EUT
                                               4m
                                                                          RF Test
                                                                          Receiver


                          Turn                      1m
                                       0.8m
                          Table




                      Ground Plane




                        Figure 5 : Frequencies measured above 1 GHz configuration

                                                                      Antenna Tower


          EUT                                                        Horn Antenna
                                  3m

                                         4m                         Spectrum
                                                                    Analyzer

                                  1.5m
                  Turn                        1m
                  Table
                                                                       Amplifier




                                                                                               Rev. 2.0


ETC Report No.: 17-07-RBF-021                                                 Sheet 16 of 30 Sheets
                                                                             FCC ID: INRU-G3TB




   6.3 Measuring Instrument


          Equipment               Manufacturer       Model No. Calibration Date Next Cal. Date
    EMI Test Receiver           Rohde & Schwarz       ESU 40        2017/11/15        2018/11/14
    Bi-Log Antenna              ETC                  MCTD 2786      2018/07/02        2019/07/01
    Horn Antenna                EMCO                   3115         2017/10/11        2018/10/10
    Horn Antenna                EMCO                   3116         2017/11/15        2018/11/14
    Amplifier                   HP                     8447D        2017/12/08        2018/12/07
    Amplifier                   HP                    83051A        2018/09/03        2019/09/02

         Measuring instrument setup in frequency band measured is as following :

         Frequency Band                                                Resolution       Video
                                      Instrument         Function
             (MHz)                                                     bandwidth      Bandwidth
            30 to 1000           Spectrum Analyzer      Peak            100 kHz          100 kHz
           Above 1000            Spectrum Analyzer      Peak            1 MHz            1 MHz




                                                                                             Rev. 2.0


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roe
   Resilt= Reading+ ConeateFacor
1 Coreced Facior AmennaFactor+ Cable Loss — ApliieGln (any).EIRP Fator:
rise
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3. The margivaliextinit~ Resut


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rise
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e 95 asn (Ohte Aboc)
           (ern— eiee —21000)
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1 Coreced Facior = AmernaFactor+ Cable Loss — ApliieGln (any).EIRP Fator:
rise
           (ERe Fato«101248 (tie3000o —9.948 300z1i
e 95 asn (Ohte Aboc)
           (ern— eiee —21000)
3. The margivaliextinit~ Resut


ETC Report No.: 17-07-RBF-021                                          Sheet 23 of 30 Sheets
                                                                      FCC ID: INRU-G3TB


6.4.3 Emission mask plots

                                                   * RBW   3 kHz
                                                     VBW 10 kHz
             Ref   20 dBm            Att   50 dB     SWT 225 ms

             20


                                                                                A
             10

      1 PK
      VIEW
             0



             -10
             F-MIC



             -20



             -30



             -40



             -50



             -60



             -70


             -80

             Center 470 MHz                    200 kHz/            Span 2 MHz




      Date: 18.SEP.2017         15:04:18




                                                                                      Rev. 2.0


ETC Report No.: 17-07-RBF-021                                           Sheet 24 of 30 Sheets
                                                                       FCC ID: INRU-G3TB


                                                   * RBW   3 kHz
                                                     VBW 10 kHz
              Ref   20 dBm           Att   50 dB   * SWT   225 ms

              20


                                                                                 A
              10

       1 PK
       VIEW
              0



              -10
              F-MIC



              -20



              -30



              -40



              -50



              -60



              -70


              -80

              Center 608 MHz                   200 kHz/             Span 2 MHz




      Date: 18.SEP.2017         15:15:21




                                                                                       Rev. 2.0


ETC Report No.: 17-07-RBF-021                                                 Sheet 27 of 30 Sheets
                                                                             FCC ID: INRU-G3TB



7. FREQUENCY STABILITY MEASUREMENT
   7.1 Provisions Applicable

       According to §2.1055 (a)(1), the frequency stability shall be measured with variation of
       ambient temperature from -30 to +50 centigrade.
       According to §2.1055 (d)(1), the frequency stability shall be measured with variation of
       primary supply voltage from 85 to 115 percent of the nominal value for other than hand
       carried battery equipment.
       According to § 2.1055 (d)(2), for hand carried, battery powered equipment, reduce
       primary supply voltage to the battery operating end point which shall be specified by the
       manufacturer.

       According to §74.861(e)(4), the frequency tolerance of the transmitter shall be 0.005
       percent.



   7.2 Measurement Procedure

       A) Frequency stability versus environmental temperature

       1. Setup the configuration per figure 6 for frequencies measured at an environmental
          chamber.


       2. Turn on EUT and set SA center frequency to the right frequency needs to be measured.
          Set SA RBW to 30 kHz, VBW to 100kHz and frequency span to 500 kHz. Then turn
          off the EUT.

       3. Set the temperature of chamber to 50℃. Allow sufficient time for the temperature of
          the chamber to stabilize. While maintaining a constant temperature inside the chamber,
          turn the EUT on and measure the EUT operating frequency when the frequency has
          stablized.


       4. Repeat step 3 with a 10℃ decreased per stage until the lowest temperature -30℃ is
          measured, record all measurement frequencies.



       B) Frequency stability versus input voltage


       1. Setup the configuration per figure 6 for frequencies measured at an environmental
          chamber set for a temperature of 25℃.



                                                                                             Rev. 2.0


ETC Report No.: 17-07-RBF-021                                                    Sheet 28 of 30 Sheets
                                                                                FCC ID: INRU-G3TB



       2. Set SA center frequency to the right frequency needs to be measured. Then set SA
          RBW to 30 kHz, VBW to 100kHz and frequency span to 500 kHz.


       3. Supply the EUT primary voltage with 85 and 115 percent of the nominal value and
          record the frequency.



                        Figure 6 : Frequency stability measurement configuration


                            Temperature Chamber



                       Spectrum
                       Analyzer




                                                                     DC
                                                                 Power Supply




   7.3 Measurement Instrument


          Equipment               Manufacturer     Model No.    Calibration Date Next Cal. Date
     Spectrum Analyzer          Rohde & Schwarz FSP40             2017/11/02      2018/11/01
     Temperature Chamber        ESPEC             EFL-3            2018/07/26            2019/07/25




                                                                                                Rev. 2.0


ETC Report No.: 17-07-RBF-021                                               Sheet 29 of 30 Sheets
                                                                           FCC ID: INRU-G3TB




   7.4 Measurement Data

           Test Date : Aug. 27, 2018         Temperature : 23 °C           Humidity : 68 %

          A. Tx Frequency 470 MHz
          A1. Frequency stability versus enviroment tempture

                   Reference Frequency 470 MHz              Limit:0.005%
                   Enviroment    Power         (MHz)               (%)
                   Tempture     Supplied
                      (℃)        (Vdc)
                        50                   520.0662           0.00312
                        40                   520.0443          -0.00110
                        30                   520.0433          -0.00129
                        20        3.0        520.0490          -0.00019
                        10                   520.0447          -0.00102
                         0                   520.0481          -0.00037
                       -10                   520.0533           0.00063
                       -20                   520.0693           0.00371
                       -30                   520.0661           0.00310



          A2. Frequency stability versus supplied voltage

                    Reference Frequency : 470 MHz           Limit:0.005%
                   Enviroment     Power          (MHz)             (%)
                    Tempture    Supplied
                      (℃)         (Vdc)
                       25           2.5       520.0667         0.00321
                       25           3.5       520.0504         0.00008




                                                                                           Rev. 2.0


ETC Report No.: 17-07-RBF-021                                              Sheet 30 of 30 Sheets
                                                                          FCC ID: INRU-G3TB




           Test Date : Aug. 27, 2018       Temperature : 23 °C            Humidity : 68 %

8 CONDUCTED EMISSION MEASUREMENT
   8.1 Standard Applicable
       This EUT is excused from investigation of conducted emission, for it is powered by DC
       battery only. According to §15.207 (d), measurements to demonstrate compliance with
       the conducted limits are not required for devices which only employ battery power for
       operation and which do not operate from the AC power lines or contain provisions for
       operation while connected to the AC power lines.




                                                                                          Rev. 2.0



Document Created: 2018-10-04 14:15:32
Document Modified: 2018-10-04 14:15:32

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