Test Report

FCC ID: V7TW311R

Test Report

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FCCID_1153395

SHENZHEN TENDA TECHNOLOGY CO., LTD.                                                   Model: W311R



                               FCC PART 15.109
                MEASUREMENT AND TEST REPORT
                                             FOR

         SHENZHEN TENDA TECHNOLOGY CO., LTD.
3F, MOSO INDUSTRIAL BUILDING, NO.1031, LIMING ROAD XILI TOWN,

                    NANSHAN DISTRICT, SHENZHEN, CHINA


                                 FCC ID: V7TW311R


         Report Concerns:                         Equipment Type:
         Original Report                          Wireless-N Broadband Router

         Model:                                   W311R

         Report No.:                              STR09088013E-3

         Test/Witness Engineer:

         Test Date:                               2009-08-04 to 2009-08-10

         Issue Date:                              2009-08-15

         Prepared By:
                             SEM.Test Compliance Service Co., Ltd.
                             3/F, Jinbao Commerce Building, Xin'an Fanshen Road,
                             Bao'an District, Shenzhen, P.R.C. (518101)



         Approved & Authorized By:

                                                    Jandy So / PSQ Manager



 Note: This test report is limited to the above client company and the product model only. It may
       not be duplicated without prior permitted by SEM.Test Compliance Service Co., Ltd.



REPORT NO.: STR09088013E-3                      PAGE 1 OF 13                      FCC PART 15.109


SHENZHEN TENDA TECHNOLOGY CO., LTD.                                                                                                                      Model: W311R


TABLE OF CONTENTS
1. GENERAL INFORMATION...................................................................................................................................3
   1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT)...............................................................................3
   1.2 TEST STANDARDS...................................................................................................................................................3
   1.3 RELATED SUBMITTAL(S)/GRANT(S) .......................................................................................................................3
   1.4 TEST METHODOLOGY .............................................................................................................................................4
   1.5 TEST FACILITY .......................................................................................................................................................4
   1.6 EUT EXERCISE SOFTWARE ....................................................................................................................................4
   1.7 ACCESSORIES EQUIPMENT LIST AND DETAILS .......................................................................................................4
   1.8 EUT CABLE LIST AND DETAILS .............................................................................................................................4
2. SUMMARY OF TEST RESULTS ...........................................................................................................................5
3. §15.107 (A)- CONDUCTED EMISSION .................................................................................................................6
   3.1 MEASUREMENT UNCERTAINTY ..............................................................................................................................6
   3.2 TEST EQUIPMENT LIST AND DETAILS .....................................................................................................................6
   3.3 TEST PROCEDURE ...................................................................................................................................................6
   3.4 BASIC TEST SETUP BLOCK DIAGRAM.....................................................................................................................6
   3.5 ENVIRONMENTAL CONDITIONS ..............................................................................................................................7
   3.6 TEST RECEIVER SETUP ...........................................................................................................................................7
   3.7 SUMMARY OF TEST RESULTS/PLOTS ......................................................................................................................7
   3.8 CONDUCTED EMISSIONS TEST DATA ......................................................................................................................7
4. §15.109(A)- RADIATED EMISSION ....................................................................................................................10
   4.1 MEASUREMENT UNCERTAINTY ............................................................................................................................10
   4.2 TEST EQUIPMENT LIST AND DETAILS ...................................................................................................................10
   4.3 TEST PROCEDURE .................................................................................................................................................10
   4.4 TEST RECEIVER SETUP .........................................................................................................................................11
   4.5 CORRECTED AMPLITUDE & MARGIN CALCULATION ............................................................................................11
   4.6 ENVIRONMENTAL CONDITIONS ............................................................................................................................11
   4.7 SUMMARY OF TEST RESULTS/PLOTS ....................................................................................................................11




REPORT NO.: STR09088013E-3                                                            PAGE 2 OF 13                                                FCC PART 15.109


SHENZHEN TENDA TECHNOLOGY CO., LTD.                                                          Model: W311R


1. GENERAL INFORMATION

1.1 Product Description for Equipment Under Test (EUT)

     Client Information
     Applicant:                            SHENZHEN TENDA TECHNOLOGY CO., LTD.
     Address of applicant:                 3F, MOSO INDUSTRIAL BUILDING, NO.1301, LIMING
                                           ROAD XILI TOWN, NANSHAN DISTRICT, SHENZHEN,
                                           CHINA.

     Manufacturer:                         SHENZHEN TENDA TECHNOLOGY CO., LTD.
     Address of manufacturer:              3F, MOSO INDUSTRIAL BUILDING, NO.1301, LIMING
                                           ROAD XILI TOWN, NANSHAN DISTRICT, SHENZHEN,
                                           CHINA.

    General Description of E.U.T

   Items                                                Description
   EUT Description:                                       Wireless-N Broadband Router
   Trade Name:                                            Tenda
   Model No.:                                             W311R
   Adding Model:                                          /
   Rated Voltage:                                         DC 9V adapter
   Packaging Size:                                        16.1x10.2x3.3 cm
   For more information refer to the circuit diagram form and the user’s manual.
  The test data is gathered from a production sample, provided by the manufacturer.

1.2 Test Standards

The following report is prepared on behalf of the SHENZHEN TENDA TECHNOLOGY CO., LTD. in
accordance with Part 2, Subpart J, and Part 15, Subparts A and B of the Federal Communication Commissions
rules.

The objective is to determine compliance with FCC Part 15.107, and 15.109 rules.

Maintenance of compliance is the responsibility of the manufacturer. Any modification of the product, which
results in lowering the emission/immunity, should be checked to ensure compliance has been maintained.

1.3 Related Submittal(s)/Grant(s)

No Related Submittal(s).




REPORT NO.: STR09088013E-3                            PAGE 3 OF 13                      FCC PART 15.109


SHENZHEN TENDA TECHNOLOGY CO., LTD.                                                             Model: W311R



1.4 Test Methodology

All measurements contained in this report were conducted with ANSI C63.4-2003, American National Standard
for Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and Electronic Equipment in
the range of 9 kHz to 40 GHz.

The equipment under test (EUT) was configured to measure its highest possible susceptibility against the tested
phenomena. The test modes were adapted accordingly in reference to the Operating Instructions.

1.5 Test Facility

FCC – Registration No.: 994117
SEM.Test Compliance Services Co., Ltd. EMC Laboratory has been registered and fully described in a report filed
with the (FCC) Federal Communications Commission. The acceptance letter from the FCC is maintained in our
files and the Registration is 994117.

Industry Canada (IC) Registration No.: 7673A
The 3m Semi-anechoic chamber of SEM.Test Compliance Services Co., Ltd. has been registered by Certification
and Engineering Bureau of Industry Canada for radio equipment testing with Registration No.: 7673A.

1.6 EUT Exercise Software

The EUT exercise program used during radiated and conducted testing was designed to exercise the system
components. The test software, provided by the customer, is started while the EUT is on to simulate the normal
work. under the Windows XP terminal.

1.7 Accessories Equipment List and Details

           Manufacturer              Description                Model                Serial Number
               IBM                    Notebook                   T22                   LV14893
             TP-LINK                   Modem                TM-EC5658V              KT99CTQC-508
              Lenovo                    Printer                  3110              OD65133711480

1.8 EUT Cable List and Details

          Cable Description           Length (M)         Shielded/Unshielded    With Core/Without Core
            Power Cable                    1.8               Unshielded              Without Core




REPORT NO.: STR09088013E-3                            PAGE 4 OF 13                          FCC PART 15.109


SHENZHEN TENDA TECHNOLOGY CO., LTD.                                          Model: W311R


2. SUMMARY OF TEST RESULTS


                      Description of Test                         Result
                 §15.107 (a) Conducted Emission                  Compliant
                  §15.109(a) Radiated Emission                   Compliant




REPORT NO.: STR09088013E-3                        PAGE 5 OF 13        FCC PART 15.109


SHENZHEN TENDA TECHNOLOGY CO., LTD.                                                           Model: W311R


3. §15.107 (a)- CONDUCTED EMISSION

3.1 Measurement Uncertainty

Base on NIS 81, The Treatment of Uncertainty in EMC Measurements, the best estimate of the uncertainty of any
conducted emissions measurement is + 1.5 dB.

3.2 Test Equipment List and Details

                                                              Serial
     Description       Manufacturer         Model                              Cal. Date          Due. Date
                                                             Number
     EMI Test
                     Rohde & Schwarz          ESPI           101611           2009-07-08          2010-07-07
      Receiver
       L.I.S.N         Schwarz beck       NSLK8126          8126-224          2009-07-08          2010-07-07
    Pulse Limiter    Rohde & Schwarz       ESH3-Z2              100911        2009-07-08          2010-07-07
        AMN          Rohde & Schwarz       ESH3-Z5         828304/014         2009-07-08          2010-07-07

3.3 Test Procedure

The setup of EUT is according with per ANSI C63.4-2003 measurement procedure. The specification used was
with the FCC Part 15.107 Limit.
The external I/O cables were draped along the test table and formed a bundle 30 to 40 cm long in the middle.
The spacing between the peripherals was 10 cm.

3.4 Basic Test Setup Block Diagram
                                                                                           LISN




                            Modem                    Notebook            Printer
                                        EUT

       LISN
                                                                                                       10m




    To Receiver                               1.5

                            0.8m Non-conduction
                            table above Ground Plane

                                                           1. 5 m




REPORT NO.: STR09088013E-3                             PAGE 6 OF 13                        FCC PART 15.109


SHENZHEN TENDA TECHNOLOGY CO., LTD.                                                                                   Model: W311R



3.5 Environmental Conditions

   Temperature:                     25 °C
   Relative Humidity:               52%
   ATM Pressure:                    1012 mbar


3.6 Test Receiver Setup
During the conducted emission test, the test receiver was set with the following configurations:

     Start Frequency .......................................................................... 150 kHz
     Stop Frequency........................................................................... 30 MHz
     Sweep Speed .............................................................................. Auto
     IF Bandwidth.............................................................................. 10 kHz
     Quasi-Peak Adapter Bandwidth ................................................. 9 kHz
     Quasi-Peak Adapter Mode ......................................................... Normal

3.7 Summary of Test Results/Plots

According to the data in section 3.8, the EUT complied with the FCC 15B Conducted margin for a Class B device,
with the worst margin reading of:
                           -13.35 dBμV at 0.42MHz in the Line mode, Pk detector, 0.15-30MHz

3.8 Conducted Emissions Test Data

                   LINE CONDUCTED EMISSIONS                                                                FCC 15 CLASS B
        Frequency Amplitude   Detector         Phase                                                      Limit     Margin
           MHz     dBμV      QP/Ave/Pk      Line/Neutral                                                  dBμV        dB
              0.42               44.10                      Pk                        Line                57.45     -13.35
              0.33               45.96                      Pk                        Line                59.45     -13.49
              0.25               46.07                      Pk                      Neutral               61.76     -15.69
              0.39               41.66                      Pk                      Neutral               58.06     -16.40
      Note: The Peak reading is less than the average limit, so the average is full fit the average limit and no
      record.




REPORT NO.: STR09088013E-3                                                PAGE 7 OF 13                             FCC PART 15.109


SHENZHEN TENDA TECHNOLOGY CO., LTD.                                                     Model: W311R



Plot of Conducted Emissions Test Data
         Conducted Disturbance
         EUT: Wireless-N Broadband Router
         M/N: W311R
         Operating Condition: Linking
         Test Specification: L
         Comment: AC 120V/60Hz connect to PC


                                               RBW   9 kHz
                                               MT    5 ms
                             Att 10 dB AUTO
   dBµV   100                   1 MHz                           10 MHz


          90

   1 PK
   MAXH
          80

   2 AV
   MAXH                                                                           TDF
          70

           -QP
          60

           -AV
          50

                                                                                  6DB
          40



          30



          20



          10


          0

          150 kHz                                                        30 MHz




  Date: 4.AUG.2009     10:44:44




REPORT NO.: STR09088013E-3                       PAGE 8 OF 13                     FCC PART 15.109


SHENZHEN TENDA TECHNOLOGY CO., LTD.                                                     Model: W311R



Plot of Conducted Emissions Test Data
         Conducted Disturbance
         EUT: Wireless-N Broadband Router
         M/N: W311R
         Operating Condition: Linking
         Test Specification: N
         Comment: AC 120V/60Hz connect to PC




                                               RBW   9 kHz
                                               MT    5 ms
                             Att 10 dB AUTO
   dBµV   100                   1 MHz                           10 MHz


          90

   1 PK
   MAXH
          80

   2 AV
   MAXH                                                                           TDF
          70

           -QP
          60

           -AV
          50

                                                                                  6DB
          40



          30



          20



          10


          0

          150 kHz                                                        30 MHz




  Date: 4.AUG.2009     10:43:32




REPORT NO.: STR09088013E-3                       PAGE 9 OF 13                     FCC PART 15.109


SHENZHEN TENDA TECHNOLOGY CO., LTD.                                                               Model: W311R


4. §15.109(a)- RADIATED EMISSION

4.1 Measurement Uncertainty

Base on NIS 81, The Treatment of Uncertainty in EMC Measurements, the best estimate of the uncertainty of any
radiation emissions measurement is + 3.0 dB.

4.2 Test Equipment List and Details

    Manufacturer            Description              Model      Serial Number        Cal. Date     Due. Date
 Spectrum Analyzer      ROHDE&SCHWARZ               FSEA20        DE25181            2009-07-08    2010-07-07
     Positioning
                               C&C                 CC-C-1F             N/A           2009-07-08    2010-07-07
      Controller
  Trilog Broadband
                           SCHWARZBECK            VULB9163        9163-333           2009-07-08    2010-07-07
       Antenna
   Horn Antenna          SCHWARZBECK  BBHX 9120                    9120-426          2009-07-08    2010-07-07
      RF Switch              EM        EMSW18                     SW060023           2009-07-08    2010-07-07
      Amplifier             Agilent     8447F                    3113A06717          2009-07-08    2010-07-07
   Coaxial Cable         SCHWARZBECK   AK9513                       9513-10          2009-07-08    2010-07-07
 EMI Test Receiver      ROHDE&SCHWARZ   ESPI                       25498514          2009-07-08    2010-07-07

4.3 Test Procedure

The setup of EUT is according with per ANSI C63.4-2003 measurement procedure. The specification used was
with the FCC Part 15.205 and FCC Part 15.109 Limit.
The external I/O cables were draped along the test table and formed a bundle 30 to 40 cm long in the middle.
The spacing between the peripherals was 10 cm.

                                                             Antenna
                                                              Tower
                                                                             1m-4m




                                         3m

                  EUT
                                  0.8m




               Turntable
                Table                                                                    To EMI Receiver



                                              Ground Plane




REPORT NO.: STR09088013E-3                             PAGE 10 OF 13                         FCC PART 15.109


SHENZHEN TENDA TECHNOLOGY CO., LTD.                                                                         Model: W311R



4.4 Test Receiver Setup
During the conducted emission test, the test receiver was set with the following configurations:

     Start Frequency .......................................................................... 30 MHz
     Stop Frequency........................................................................... 1000 MHz
     Sweep Speed .............................................................................. Auto
     IF Bandwidth.............................................................................. 10 kHz
     Quasi-Peak Adapter Bandwidth ................................................. 120 kHz
     Quasi-Peak Adapter Mode ......................................................... Normal

4.5 Corrected Amplitude & Margin Calculation

The Corrected Amplitude is calculated by adding the Antenna Factor and the Cable Factor, and subtracting the
Amplifier Gain from the Amplitude reading. The basic equation is as follows:

                                                Corr. Ampl. = Indicated Reading – Corr. Factor

The “Margin” column of the following data tables indicates the degree of compliance with the applicable limit.
For example, a margin of -6dBμV means the emission is 6dBμV below the maximum limit for Class B. The
equation for margin calculation is as follows:

                                                 Margin = Corr. Ampl. – FCC Part 15B Limit

4.6 Environmental Conditions

   Temperature:                    25 °C
   Relative Humidity:              54%
   ATM Pressure:                   1011 mbar



4.7 Summary of Test Results/Plots

According to the data, the EUT complied with the FCC 15B Class B standards, and had the worst margin of:


              -1.33 dBμV at 899.9577MHz in the Horizontal polarization, 30 MHz to 1 GHz, 3Meters




REPORT NO.: STR09088013E-3                                              PAGE 11 OF 13                     FCC PART 15.109


SHENZHEN TENDA TECHNOLOGY CO., LTD.                                                         Model: W311R



Plot of Radiation Emissions Test Data
     Radiated Disturbance
     EUT: Wireless-N Broadband Router
     M/N: W311R
     Operating Condition: Linking
     Test Specification: Horizontal & Vertical
     Comment: AC 120V/60Hz connect to PC
Horizontal




No.    Frequency      Reading       Correct       Result     Limit     Margin   Degree   Height   Remark
          (MHz)      (dBuV/m)     Factor(dB)     (dBuV/m)   (dBuV/m)    (dB)     ( °)    (cm)
 1      124.9249       34.37         4.57         38.94      43.50     -4.56     160      100      peak
 2      136.8747       31.89         3.42         35.31      43.50     -8.19     36       100      peak
 3      250.4859       36.35         7.69         44.04      46.00     -1.96     12       100      peak
 4      384.5447       30.72         9.96         40.68      46.00     -5.32      2       100      peak
 5      642.2923       23.78         15.31        39.09      46.00     -6.91     360      100      peak
 6      899.9577       25.87         18.80        44.67      46.00     -1.33     110      100      peak




REPORT NO.: STR09088013E-3                             PAGE 12 OF 13                     FCC PART 15.109


SHENZHEN TENDA TECHNOLOGY CO., LTD.                                                       Model: W311R



Vertical




No.        Frequency   Reading     Correct      Result     Limit     Margin   Degree   Height   Remark
             (MHz)     (dBuV/m)   Factor(dB)   (dBuV/m)   (dBuV/m)    (dB)     ( °)    (cm)
 1         124.9249     27.95       4.57        32.52      43.50     -10.98     2       100      peak
 2         250.4859     27.76       7.69        35.45      46.00     -10.55    30       200      peak
 3         384.5447     31.80       9.96        41.76      46.00     -4.24     100      100      peak
 4         512.9478     25.42       13.20       38.62      46.00     -7.38     200      200      peak
 5         642.2923     25.09       15.31       40.40      46.00     -5.60     325      100      peak
 6         899.9577     22.24       18.80       41.04      46.00     -4.96     360      100      peak




                                       ***** END OF REPORT *****




REPORT NO.: STR09088013E-3                           PAGE 13 OF 13                     FCC PART 15.109



Document Created: 2009-08-13 15:35:30
Document Modified: 2009-08-13 15:35:30

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