Test Report

FCC ID: 2AFWN-ST-GR4300N

Test Report

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FCCID_3884633

                              TEST REPORT
                   CTK Co., Ltd.
                   (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
                   Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
                   Tel: +82-31-339-9970                   Page (1) / (33) Pages
                   Fax: +82-31-624-9501




    1. Client
    ◦ Name : SOLUM CO.,LTD.
    ◦ Address : 4,5,6th F, 357, Guseong-ro, Giheung-gu, Gyeonggi-do, Yongin-si, Republic of
                  Korea

    ◦ Date of Receipt : 2018-05-04
    2. Manufacturer
    ◦ Name : SOLUM CO.,LTD.
    ◦ Address : 4,5,6th F, 357, Guseong-ro, Giheung-gu, Gyeonggi-do, Yongin-si, Republic of
                  Korea
    3. Use of Report : For FCC Certification
    4. Test Sample / Model: Electronic Shelf Label / ST-GR4300N
    5. Date of Test : 2018-05-23 to 2018-05-28
    6. Test Standard(method) used : FCC 47 CFR part 15 subpart C 15.247,
                                                    ANSI C63.10-2013
    7. Testing Environment: Temp.: (23 ± 1) ℃, Humidity: (48 ± 5) % R.H.
    8. Test Results : Compliance



    The results shown in this test report refer only to the sample(s) tested unless otherwise
    stated. This Test Report cannot be reproduced, except in full.




                     Tested by                               Technical Manager

    Affirmation
                     Bongseok Kim: (Signature)               Young-taek Lee: (Signature)




                                                                                   2018-05-30




                              Republic of KOREA    CTK Co., Ltd.

CTK-D151-06                                                                                R101 Rev.0


                  CTK Co., Ltd.
                  (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
                  Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
                  Tel: +82-31-339-9970                   Page (2) / (33) Pages
                  Fax: +82-31-624-9501




                          REPORT REVISION HISTORY
        Date                                     Revision                        Page No
     2018-05-30                          Issued (CTK-2018-01534)                   all




This report shall not be reproduced except in full, without the written approval of
CTK Co., Ltd. This document may be altered or revised by CTK Co., Ltd. personnel
only, and shall be noted in the revision section of the document. Any alteration of
this document not carried out by CTK Co., Ltd. will constitute fraud and shall nullify
the document.




CTK-D151-06                                                                       R101 Rev.0


                       CTK Co., Ltd.
                       (Ho-dong), 113, Yejik-ro, Cheoin-gu,             Report No.:
                       Yongin-si, Gyeonggi-do, Korea                    CTK-2018-01534
                       Tel: +82-31-339-9970                             Page (3) / (33) Pages
                       Fax: +82-31-624-9501




                                                 CONTENTS
1. General Product Description ....................................................................................... 4
     1.1 Client Information ............................................................................................. 4
     1.2 Product Information ........................................................................................... 4
     1.3 Peripheral Devices ............................................................................................. 4
2. Facility and Accreditations.......................................................................................... 5
     2.1 Test Facility ...................................................................................................... 5
     2.2 Laboratory Accreditations and Listings .................................................................. 5
     2.3 Calibration Details of Equipment Used for Measurement .......................................... 5
3. Test Specifications .................................................................................................... 6
     3.1 Standards ........................................................................................................ 6
     3.2 Mode of operation during the test ........................................................................ 6
     3.3 Maximum Measurement Uncertainty .................................................................... 7
4. Technical Characteristic Test ....................................................................................... 8
     4.1 6dB Bandwidth ................................................................................................. 8
     4.2 Maximum peak Conducted Output Power ............................................................ 13
     4.3 Power Spectral Density .................................................................................... 16
     4.4 Band Edge & Conducted Spurious emission ......................................................... 19
     4.5 Radiated Emission ........................................................................................... 24
APPENDIX A – Test Equipment Used For Tests ................................................................ 32
APPENDIX B – EUT Photographs ................................................................................... 33




CTK-D151-06                                                                                                       R101 Rev.0


                     CTK Co., Ltd.
                     (Ho-dong), 113, Yejik-ro, Cheoin-gu,       Report No.:
                     Yongin-si, Gyeonggi-do, Korea              CTK-2018-01534
                     Tel: +82-31-339-9970                       Page (4) / (33) Pages
                     Fax: +82-31-624-9501




1. General Product Description
1.1 Client Information

Company                                       SOLUM CO.,LTD.
                                              4,5,6th F, 357, Guseong-ro, Giheung-gu, Gyeonggi-do, Yongin-si,
Contact Point                                 Republic of Korea
                                              Name : Kim Yong Joo
Contact Person                                E-mail : yj0223.kim@solu-m.com
                                              Tel : +82-31-8006-0944


1.2 Product Information

FCC ID                                        2AFWN-ST-GR4300N
Product Description                           Electronic Shelf Label
Basic Model name                              ST-GR4300N
                                              ST-GR43EEN, ST-GM4300N
                                              (ST-GR43EEN and ST-GM4300N are no technical difference from
Variant Model name
                                              each model only except for model name because of marketing
                                              purposes.)
Operating Frequency                           2 405 MHz - 2 480 MHz
RF Output Power                               0.44 dBm(1.107 mW)
                                              Antenna type : PCB Pattern
Antenna Specification
                                              Peak Gain : -4.60 dBi
Number of channels                            16
Channel Spacing                               5 MHz
Type of Modulation                            OQPSK
Power Source                                  DC 3 V(CR2450 Battery * 2EA)
RF Power setting in Test SW                   Initial value


1.3 Peripheral Devices

  -For Conducted Measurement and Radiated Measurement
            Device                    Manufacturer                Model No.                Serial No.
 Notebook                   HP Inc.                           HP Probook 650 G1    5CG5114K13
 AC Adapter                 HP Inc.                           PPP012D-S            677777-003




CTK-D151-06                                                                                          R101 Rev.0


                 CTK Co., Ltd.
                 (Ho-dong), 113, Yejik-ro, Cheoin-gu,       Report No.:
                 Yongin-si, Gyeonggi-do, Korea              CTK-2018-01534
                 Tel: +82-31-339-9970                       Page (5) / (33) Pages
                 Fax: +82-31-624-9501




2. Facility and Accreditations
2.1 Test Facility

The measurement facility is located at (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yong-in-si,
Gyeonggi-do, Korea.

2.2 Laboratory Accreditations and Listings

                                                                           Registration
    Country    Agency               Scope of Accreditation                                Logo
                                                                             Number

                         FCC Part 15 & 18
       USA       FCC                                                           805871
                         EMI (Electromagnetic Interference / Emission)



                         ISED
     CANADA      ISED                                                          8737A-2
                         EMI (3/10m test site)


                                                                               C-986
                         VCCI V-3                                              T-1843
      JAPAN      VCCI
                         EMI (Electromagnetic Interference / Emission)         R-3627
                                                                               G-387




                         EMI (Electromagnetic Interference / Emission)
      KOREA      NRRA                                                          KR0025
                         EMS (Electromagnetic Susceptibility / Immunity)




2.3 Calibration Details of Equipment Used for Measurement

Test equipment and test accessories are calibrated on regular basis. The maximum time
between calibrations is one year or what is recommended by the manufacturer, whichever is
less. All test equipment calibrations are traceable to the Korea Research Institute of Standards
and Science (KRISS), therefore, all test data recorded in this report is traceable to KRISS.




CTK-D151-06                                                                               R101 Rev.0


                     CTK Co., Ltd.
                     (Ho-dong), 113, Yejik-ro, Cheoin-gu,           Report No.:
                     Yongin-si, Gyeonggi-do, Korea                  CTK-2018-01534
                     Tel: +82-31-339-9970                           Page (6) / (33) Pages
                     Fax: +82-31-624-9501




3. Test Specifications
3.1 Standards

   Section in                                                                           Status             Test
                                          Requirement(s)
      FCC                                                                              (Note 1)          Condition

    15.247(a)         6 dB Bandwidth                                                        C

    15.247(e)         Transmitter power spectral density                                    C
                                                                                                          Conducted
    15.247(b)         Maximum peak conducted output power                                   C

    15.247(d)         Unwanted emission                                                     C

     15.209           Transmitter emission                                                  C             Radiated
                                                                                                             Line
    15.207(a)         AC Conducted Emission                                            NA(Note 3)
                                                                                                          Conducted

 Note 1: C=Complies     NC=Not Complies       NT=Not Tested     NA=Not Applicable

 Note 2: The data in this test report are traceable to the national or international standards.

 Note 3: The equipment is operated on battery power only.

 Note 4: The sample was tested according to the following specification: FCC Part 15.247, ANSI C63.10-2013

 Note 5: The tests were performed according to the method of measurements prescribed in KDB No.558074.


3.2 Mode of operation during the test

The EUT is operated in a manner representative of the typical of the equipments.
During at testing, system components were manipulated within the confines of typical usage to
maximize each emission. All modulation modes were tests.
The results are only attached worst cases.

Test Frequency
          Lowest channel                           Middle channel                           Highest channel
              2 405 MHz                               2 445 MHz                                   2 480 MHz


Test mode
                      Modulation                                                    Duty Cycle
                          OQPSK                                                        100 %




CTK-D151-06                                                                                                   R101 Rev.0


                     CTK Co., Ltd.
                     (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
                     Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
                     Tel: +82-31-339-9970                   Page (7) / (33) Pages
                     Fax: +82-31-624-9501




3.3 Maximum Measurement Uncertainty

The value of the measurement uncertainty for the measurement of each parameter.
Coverage factor k = 2, Confidence levels of 95 %

                      Description                                        Uncertainty
               Conducted RF Output Power                                     1.5 dB
                   Occupied Bandwidth                                       0.1 MHz
              Unwanted Emission(conducted)                                   3.0 dB
              Radiated Emissions (f ≤ 1 GHz)                                 4.0 dB
              Radiated Emissions (f > 1 GHz)                                 5.0 dB




CTK-D151-06                                                                            R101 Rev.0


                    CTK Co., Ltd.
                    (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
                    Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
                    Tel: +82-31-339-9970                   Page (8) / (33) Pages
                    Fax: +82-31-624-9501




4. Technical Characteristic Test
4.1 6dB Bandwidth & 99% Bandwidth

  Test Procedures(ANSI C63.10-2013 6.9.2)

  Measure the maximum width of the emission that is constrained by the frequencies
  associated with the two outermost amplitude points (upper and lower frequencies) that are
  attenuated by 6 dB relative to the maximum level measured in the fundamental emission.

  Test Procedures(ANSI C63.10-2013 6.9.3)

  The occupied bandwidth is the frequency bandwidth such that, below its lower and above its
  upper frequency limits, the mean powers are each equal to 0.5% of the total mean power of
  the given emission.
  Use the 99% power bandwidth function of the instrument and report the measured
  bandwidth.

  Test Settings :
  Center frequency = the highest, middle and the lowest channels
  a) RBW = 100 kHz                                     b) VBW ≥ 3 x RBW
  c) Detector = peak                                   d) Trace mode = Max hold
  e) Sweep = auto couple
  f) Allow trace to fully stabilize
  g) Measure the maximum width of the emission that is constrained by the frequencies
     associated with the two outermost amplitude points (upper and lower frequencies) that
     are attenuated by 6 dB relative to the maximum level measured in the fundamental
     emission.


  Limit :
  6 dB Bandwidth > 500kHz




CTK-D151-06                                                                         R101 Rev.0


                       CTK Co., Ltd.
                       (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
                       Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
                       Tel: +82-31-339-9970                   Page (9) / (33) Pages
                       Fax: +82-31-624-9501




  Test Data :


                            Frequency       6 dB Bandwidth       99% Bandwidth
          Channel                                                                     Result
                              [MHz]              [MHz]              [MHz]
               Low             2 405               1.60                  2.30         Complies

              Middle           2 445               1.59                  2.29         Complies

              High             2 480               1.61                  2.31         Complies




  See next pages for actual measured spectrum plots.




CTK-D151-06                                                                                    R101 Rev.0


              CTK Co., Ltd.
              (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
              Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
              Tel: +82-31-339-9970                   Page (10) / (33) Pages
              Fax: +82-31-624-9501



                                  6 dB Bandwidth[MHz]
                               Low channel (2 405 MHz)




                             Middle channel (2 445 MHz)




CTK-D151-06                                                                   R101 Rev.0


              CTK Co., Ltd.
              (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
              Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
              Tel: +82-31-339-9970                   Page (11) / (33) Pages
              Fax: +82-31-624-9501



                               High channel (2 480 MHz)




                                  99% Bandwidth[MHz]
                               Low channel (2 405 MHz)




CTK-D151-06                                                                   R101 Rev.0


              CTK Co., Ltd.
              (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
              Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
              Tel: +82-31-339-9970                   Page (12) / (33) Pages
              Fax: +82-31-624-9501



                             Middle channel (2 445 MHz)




                               High channel (2 480 MHz)




CTK-D151-06                                                                   R101 Rev.0


                   CTK Co., Ltd.
                   (Ho-dong), 113, Yejik-ro, Cheoin-gu,      Report No.:
                   Yongin-si, Gyeonggi-do, Korea             CTK-2018-01534
                   Tel: +82-31-339-9970                      Page (13) / (33) Pages
                   Fax: +82-31-624-9501




4.2 Maximum peak Conducted Output Power

  Test Procedures(ANSI C63.10-2013 11.9.1)

  The following procedure can be used when the maximum available RBW of the instrument is
  less than the DTS bandwidth:

  Test Settings:
  Center frequency = the highest, middle and the lowest channels
  a) RBW ≥ DTS Bandwidth                              b) VBW ≥ 3 x RBW
  c) span ≥ 3 x RBW                                   d) Sweep time = auto couple
  e) Detector = peak                                  f) Trace mode= max hold
  g) Allow trace to fully stabilize
  h) Use peak marker function to determine the peak amplitude level.


  Limit :
  Maximum Output Power <           1 W (30 dBm)


  Test Data :

                             Frequency       Measurement data             Limit
              Channel                                                                 Result
                               [MHz]              [dBm]                  [dBm]
                Low             2 405                0.44                  30         Complies

               Middle           2 445                -1.40                 30         Complies

               High             2 480                -1.66                 30         Complies


  See next pages for actual measured spectrum plots.




CTK-D151-06                                                                                      R101 Rev.0


              CTK Co., Ltd.
              (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
              Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
              Tel: +82-31-339-9970                   Page (14) / (33) Pages
              Fax: +82-31-624-9501




                               Low channel (2 405 MHz)




                             Middle channel (2 445 MHz)




CTK-D151-06                                                                   R101 Rev.0


              CTK Co., Ltd.
              (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
              Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
              Tel: +82-31-339-9970                   Page (15) / (33) Pages
              Fax: +82-31-624-9501




                               High channel (2 480 MHz)




CTK-D151-06                                                                   R101 Rev.0


                   CTK Co., Ltd.
                   (Ho-dong), 113, Yejik-ro, Cheoin-gu,       Report No.:
                   Yongin-si, Gyeonggi-do, Korea              CTK-2018-01534
                   Tel: +82-31-339-9970                       Page (16) / (33) Pages
                   Fax: +82-31-624-9501




4.3 Power Spectral Density

  Test Procedures(ANSI C63.10-2013 11.10.2)

  This procedure shall be used if maximum peak conducted output power was used to
  demonstrate compliance.

  Test Settings:
  Center frequency = the highest, middle and the lowest channels
  a) RBW : 3 kHz ≤ RBW ≤ 100 kHz                      b) VBW ≥ 3 x RBW
  c) span ≥ 1.5 x DTS bandwidth                       d) Sweep time = auto couple
  e) Detector = peak                                  f) Trace mode= max hold
  g) Allow trace to fully stabilize
  h) Use the peak marker function to determine the maximum amplitude level within the RBW.


 Limit :

  Power Spectral Density <        8 dBm @ 3 kHz BW


 Test Data :

                             Frequency       Measurement data              Limit
              Channel                                                                  Result
                               [MHz]              [dBm]                   [dBm]
                Low             2 405                -14.40                  8         Complies

               Middle           2 445                -15.63                  8         Complies

               High             2 480                -16.32                  8         Complies


  See next pages for actual measured spectrum plots.




CTK-D151-06                                                                                       R101 Rev.0


              CTK Co., Ltd.
              (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
              Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
              Tel: +82-31-339-9970                   Page (17) / (33) Pages
              Fax: +82-31-624-9501




                               Low channel (2 405 MHz)




                             Middle channel (2 445 MHz)




CTK-D151-06                                                                   R101 Rev.0


              CTK Co., Ltd.
              (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
              Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
              Tel: +82-31-339-9970                   Page (18) / (33) Pages
              Fax: +82-31-624-9501




                               High channel (2 480 MHz)




CTK-D151-06                                                                   R101 Rev.0


                   CTK Co., Ltd.
                   (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
                   Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
                   Tel: +82-31-339-9970                   Page (19) / (33) Pages
                   Fax: +82-31-624-9501




4.4 Band Edge & Conducted Spurious emission

  Test Procedures(ANSI C63.10-2013 11.11.3)

 The Unwanted emission from the EUT were measured according to the dictates PKPSD
 measurement procedure in section 11.11 of ANSI C63.10-2013.

 In any 100 kHz bandwidth outside the frequency band in which the spread spectrum or
 digitally modulated device is operating, the RF power that is produced shall be at least 20 dB
 below that in the 100 kHz bandwidth within the band that contains the highest level of the
 desired power, based on either an RF conducted or a radiated measurement, provided that
 the transmitter demonstrates compliance with the peak conducted power limits. If the
 transmitter complies with the conducted power limits based on the use of root-mean-square
 averaging over a time interval, as permitted under Section 5.4(4), the attenuation required
 shall be 30 dB instead of 20 dB. Attenuation below the general field strength limits specified
 in RSS-Gen is not required.


  Test Settings:
  Center frequency = the highest, middle and the lowest channels
  a) RBW = 100 kHz                                    b) VBW ≥ 3 x RBW
  c) Detector = peak                                  d) Sweep time = auto couple
  e) Trace mode= max hold
  f) Allow trace to fully stabilize
  g) Use the peak marker function to determine the maximum amplitude level.


 Limit :

  Emission level <      20 dBc


 Test results: Complies
    - All conducted emission in any 100kHz bandwidth outside of the spread spectrum band
     was at least 20dB lower than the highest in-band spectral density. Therefore the applying
     equipment meets the requirement.


  See next pages for actual measured spectrum plots.




CTK-D151-06                                                                            R101 Rev.0


              CTK Co., Ltd.
              (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
              Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
              Tel: +82-31-339-9970                   Page (20) / (33) Pages
              Fax: +82-31-624-9501




                                      Band–edge




CTK-D151-06                                                                   R101 Rev.0


              CTK Co., Ltd.
              (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
              Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
              Tel: +82-31-339-9970                   Page (21) / (33) Pages
              Fax: +82-31-624-9501



                         Conducted Spurious emission

                               Low channel (2 405 MHz)




CTK-D151-06                                                                   R101 Rev.0


              CTK Co., Ltd.
              (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
              Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
              Tel: +82-31-339-9970                   Page (22) / (33) Pages
              Fax: +82-31-624-9501




                             Middle channel (2 445 MHz)




CTK-D151-06                                                                   R101 Rev.0


              CTK Co., Ltd.
              (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
              Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
              Tel: +82-31-339-9970                   Page (23) / (33) Pages
              Fax: +82-31-624-9501




                               High channel (2 480 MHz)




CTK-D151-06                                                                   R101 Rev.0


                  CTK Co., Ltd.
                  (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
                  Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
                  Tel: +82-31-339-9970                   Page (24) / (33) Pages
                  Fax: +82-31-624-9501




4.5 Radiated Emission

  Test Location
       10 m SAC (test distance :     10 m,       3 m)
       3 m SAC (test distance : 3 m)


  Test Procedures

  1)     In the frequency range of 9 kHz to 30 MHz, magnetic field is measured with Loop
         Antenna. The center of the Loop Test Antenna is 1m above the ground. During the
         measurement the Loop Test Antenna rotates about its vertical axis for maximum
         response at each azimuth about the EUT.
  2)     In the frequency rage above 30 MHz, Bi-Log Test Antenna(30 MHz to 1 GHz) and Horn
         Test Antenna(above 1 GHz) are used. Test Antenna is 3m away from the EUT. Test
         Antenna height is carried from 1m to 4m above the ground to determine the maximum
         value of the field strength. The emissions levels at both horizontal and vertical
         polarizations should be tested.

  Instrument Settings

  Frequency Range = 9 kHz ~ 25 GHz (2.4 GHz 10th harmonic)
  a) RBW = 1 MHz for f ≥ 1 GHz, 100 kHz for f < 1 GHz, 9 kHz for f < 30 MHz
  b) VBW ≥ RBW
  c) Sweep time = auto couple




CTK-D151-06                                                                       R101 Rev.0


                    CTK Co., Ltd.
                    (Ho-dong), 113, Yejik-ro, Cheoin-gu,      Report No.:
                    Yongin-si, Gyeonggi-do, Korea             CTK-2018-01534
                    Tel: +82-31-339-9970                      Page (25) / (33) Pages
                    Fax: +82-31-624-9501




  Limit :

  FCC Part 15 § 15.205 (a) Except as shown in paragraph (d) of this section, only
  spurious emissions are permitted in any of the frequency bands listed below:


                                Table 1. Restricted Frequency Bands
       MHz              MHz                MHz                MHz                MHz              GHz
      0.09-0.11     8.37626-8.38675        73-74.6          399.9-410           2690-2900      10.6-12.7
   1
     0.495-0.505    8.41425-8.41475       74.8-75.2          608-614            3260-3267      13.25-13.4
  2.1735-2.1905       12.29-12.293       108-121.94         960-1240            3332-3339      14.47-14.5
    4.125-4.128    12.51975-12.52025       123-138          1300-1427          3345.8-3358     15.35-16.2
 4.17725-4.17775   12.57675-12.57725    149.9-150.05       1435-1626.5          3600-4400       17.7-21.4
                                         156.52475-
 4.20725-4.20775      13.36-13.41                          1645.5-1646.5       4500-5150       22.01-23.12
                                          156.52525
   6.215-6.218        16.42-16.423       156.7-156.9         1660-1710         5350-5460          23.6-24
 6.26775-6.26825   16.69475-16.69525   162.0125-167.17     1718.8-1722.2       7250-7750         31.2-31.8
 6.31175-6.31225   16.80425-16.80475    167.72-173.2         2200-2300         8025-8500        36.43-36.5
                                                                                               2
   8.291-8.294         25.5-25.67          240-285          2310-2390          9000-9200         Above 38.6
   8.362-8.366         37.5-38.25         322-335.4        2483.5-2500         9300-9500



  1
      Until February 1, 1999, this restricted band shall be 0.490-0.510 MHz.
  2
      Above 38.6
  § 15.205 (b) Except as provided in paragraphs (d) and (e), the field strength of
  emissions appearing within these frequency bands shall not exceed the limits shown is
  Section 15.209. At frequencies equal to or less than 1000 MHz, compliance with the limits in
  Section 15.209 shall be demonstrated using measurement instrumentation employing a
  CISPR quasi-peak detector. Above 1000 MHz, compliance with the                emission limits in Section
  15.209 shall be demonstrated based on the average value of the measured emissions.
  The provisions in Section 15.35 apply to these measurements.




CTK-D151-06                                                                                      R101 Rev.0


                   CTK Co., Ltd.
                   (Ho-dong), 113, Yejik-ro, Cheoin-gu,    Report No.:
                   Yongin-si, Gyeonggi-do, Korea           CTK-2018-01534
                   Tel: +82-31-339-9970                    Page (26) / (33) Pages
                   Fax: +82-31-624-9501




  FCC Part 15 § 15.209 (a) Except as provided elsewhere in this Subpart, the emissions from
  an intentional radiator shall not exceed the field strength levels specified in the following
  table :


  Except when the requirements applicable to a given device state otherwise, emissions from
  licence-exempt transmitters shall comply with the field strength limits shown in Table 2
  Additionally, the level of any transmitter emission shall not exceed the level of the
  transmitter’s fundamental emission.


            Table 2. General Field Strength Limits for Licence-Exempt Transmitters

                                  Field Strength          Field Strength              Measurement
            Frequency(MHz)
                                    uV/m@3m               dBuV/m@3m                 Distance (meters)
              0.009-0.490        2400/F(kHz)                    -                         300
              0.490-1.705        24000/F(kHz)                   -                          30
                1.705-30              30                        -                         30
                 30-88              100**                      40                          3
                 88-216             150**                     43.5                         3
                216-960             200**                      46                          3
               Above 960             500                       54                          3


  ** Except as provided in 15.209(g).fundamental emissions from intentional radiators
  operating under this Section shall not be located in the frequency bands 54-72MHz, 76-
  88MHz, 174-216MHz, 470-806MHz. However, operation within these frequency bands is
  permitted under other sections of this Part, e.g.15.231 and 15.241.

 Note :
 1) For above 1 GHz, the emission limit in this paragraph is based on measurement
    instrumentation employing an average detector, measurement using instrumentation with
    a peak detector function, corresponding to 20 dB above the maximum permitted average
    limit.
 2) For above 1 GHz, limit field strength of harmonics : 54 dBuV/m@3m (AV) and
    74 dBuV/m@3m (PK)
 3) For measurement above 1GHz, the resolution bandwidth is set to 1 MHz and video
    bandwidth is set to 1 MHz for peak measurement and 10 Hz for average
    measurement.(Duty Cycle is > 98%,)
 4) Duty Cycle is < 98%, VBW setting will need to > 1/T.




CTK-D151-06                                                                                       R101 Rev.0


                 CTK Co., Ltd.
                 (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
                 Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
                 Tel: +82-31-339-9970                   Page (27) / (33) Pages
                 Fax: +82-31-624-9501




  Test Setup:

  1)    For field strength of emissions from 9 kHz to 30 MHz




  2)    For field strength of emissions from 30 MHz to 1 GHz




CTK-D151-06                                                                      R101 Rev.0


                  CTK Co., Ltd.
                  (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
                  Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
                  Tel: +82-31-339-9970                   Page (28) / (33) Pages
                  Fax: +82-31-624-9501




  3) For field strength of emissions above 1 GHz




  Test results

  1) 9 kHz to 30 MHz

  The requirements are:
     Complies
           Frequency              Measured Data             Margin
                                                                                  Remark
             (MHz)                  (dBuV/m)                 (dB)
               -                        -                      -                  See note

 Note :
 The amplitude of spurious emissions that are attenuated by more than 20 dB below the
 permissible value has no need to be reported.

  Distance extrapolation factor = 40 log (specific distance / test distance) (dB)




CTK-D151-06                                                                                  R101 Rev.0


                 CTK Co., Ltd.
                 (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
                 Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
                 Tel: +82-31-339-9970                   Page (29) / (33) Pages
                 Fax: +82-31-624-9501




  2) 30 MHz to 1 GHz

                          Test mode : High Channel(Worst case)

  The requirements are:
     Complies

  Test Data




  Remark :
  1. The Unwanted emission was measured in the following position: EUT stand-up position(Z
    axis), lie-down position(X,Y axis). The worst emission was found in lie-down position(X
    axis) and the worst case was recorded.
  2. Result = Reading + c.f(Correction factor)
  3. Correction factor = Antenna factor + Cable loss + 6 dB attenuator - Amp Gain
  4. This data is the Peak(PK) value.

CTK-D151-06                                                                        R101 Rev.0


                 CTK Co., Ltd.
                 (Ho-dong), 113, Yejik-ro, Cheoin-gu,    Report No.:
                 Yongin-si, Gyeonggi-do, Korea           CTK-2018-01534
                 Tel: +82-31-339-9970                    Page (30) / (33) Pages
                 Fax: +82-31-624-9501




  3) 1 GHz to 25 GHz

  The requirements are:
     Complies

  Test Data

                              Test mode : Lowest frequency(2 405 MHz)

                                                      Result        Limit
   Frequency   Ant. Pol.    Reading        c.f                                    Margin
                                                       PK            AV                    Remark
     [MHz]      (V/H)      [dBuV/m]      [dB/m]                                    [dB]
                                                    [dBuV/m]      [dBuV/m]
    4 810.00       V         51.82         1.32         53.14        54.00         0.86     Peak



                              Test mode : Middle frequency(2 445 MHz)

                                                      Result        Limit
   Frequency   Ant. Pol.    Reading        c.f                                    Margin
                                                       PK            AV                    Remark
     [MHz]      (V/H)      [dBuV/m]      [dB/m]                                    [dB]
                                                    [dBuV/m]      [dBuV/m]
    4 890.00      V          49.18         1.32         50.50        54.00         3.50     Peak



                              Test mode : Highest frequency(2 480 MHz)

                                                      Result        Limit
   Frequency   Ant. Pol.    Reading        c.f                                    Margin
                                                       PK            AV                    Remark
     [MHz]      (V/H)      [dBuV/m]      [dB/m]                                    [dB]
                                                    [dBuV/m]      [dBuV/m]
    4 960.00      V          46.79         1.42         48.21        54.00         5.79     Peak




  Remarks
  1. The Unwanted emission was measured in the following position: EUT stand-up position(Z
    axis), lie-down position(X,Y axis). The worst emission was found in lie-down position(X
    axis) and the worst case was recorded.
  2. Result = Reading + c.f(correction factor)
  3. Correction factor = Antenna factor + Cable loss - Amp Gain




CTK-D151-06                                                                                R101 Rev.0


                     CTK Co., Ltd.
                     (Ho-dong), 113, Yejik-ro, Cheoin-gu,    Report No.:
                     Yongin-si, Gyeonggi-do, Korea           CTK-2018-01534
                     Tel: +82-31-339-9970                    Page (31) / (33) Pages
                     Fax: +82-31-624-9501




  4) Restricted Frequency Bands

                                  Test frequency range : 2 310 MHz – 2 390 MHz

                                                          Result*       Limit
    Frequency      Ant. Pol.      Reading        c.f                                  Margin
                                                            PK           AV                    Remark
      [MHz]         (V/H)        [dBuV/m]      [dB/m]                                  [dB]
                                                         [dBuV/m]     [dBuV/m]
     2 388.80          V           52.20        -3.91       48.29        54.00         5.71     Peak
  *Result = Reading + c.f(correction factor)

                                 Test frequency range : 2 483.5 MHz – 2 500 MHz

                                                          Result*       Limit
    Frequency      Ant. Pol.      Reading        c.f                                  Margin
                                                            PK           AV                    Remark
      [MHz]         (V/H)        [dBuV/m]      [dB/m]                                  [dB]
                                                         [dBuV/m]     [dBuV/m]
     2 483.50          V           51.18        -3.74       47.44        54.00         6.56     Peak


  Remarks
  1. The Unwanted emission was measured in the following position: EUT stand-up position(Z
    axis), lie-down position(X,Y axis). The worst emission was found in lie-down position(X
    axis) and the worst case was recorded.
  2. Correction factor = Antenna factor + Cable loss - Amp Gain




CTK-D151-06                                                                                    R101 Rev.0


                  CTK Co., Ltd.
                  (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
                  Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
                  Tel: +82-31-339-9970                   Page (32) / (33) Pages
                  Fax: +82-31-624-9501




APPENDIX A – Test Equipment Used For Tests
         Name of                              Model
                          Manufacturer                    Serial No.        Cal. Date   Due Date
        Equipment                              No.
  1    Signal Analyzer         R&S             FSV30         100925        2018-01-26   2019-01-26
  2   Signal Generator    Rohde & Schwarz    SMB100A         175528        2017-11-01   2018-11-01
  3   DC Power Supply         Agilent         E3632A      MY40011638       2017-11-01   2018-11-01
  4   EMI Test Receiver   Rohde & Schwarz      ESCI7         100814        2017-10-25   2018-10-25
  5     Bilog Antenna        Schaffner       CBL6111C         2551         2018-05-10   2020-05-10
  6 Active Loop Antenna   SCHWARZBECK       FMZB 1513      1513-125        2018-05-02   2020-05-02
  7    6dB Attenuator          R&S              DNF      272.4110.50-2     2017-10-25   2018-10-25
  8      AMPLIFIER           SONOMA             310          291721        2018-02-02   2019-02-02
  9   EMI Test Receiver   Rohde & Schwarz      ESU40         100336        2018-02-01   2019-02-01
 10     Preamplifier          Agilent          8449B      3008A02011       2017-11-30   2018-11-30
 11     Horn Antenna       ETS-Lindgren        3117        00154525        2017-09-14   2019-09-14
 12     Horn Antenna       ETS-Lindgren        3116        00062916        2017-04-25   2019-04-25




CTK-D151-06                                                                                R101 Rev.0


              CTK Co., Ltd.
              (Ho-dong), 113, Yejik-ro, Cheoin-gu,   Report No.:
              Yongin-si, Gyeonggi-do, Korea          CTK-2018-01534
              Tel: +82-31-339-9970                   Page (33) / (33) Pages
              Fax: +82-31-624-9501




APPENDIX B – EUT Photographs




CTK-D151-06                                                                   R101 Rev.0



Document Created: 2018-06-11 16:25:19
Document Modified: 2018-06-11 16:25:19

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