test report DFS

FCC ID: H8N-WLU5150

Test Report

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FCCID_1591095

                            DFS TEST REPORT

                           REPORT NO.: RF111011C17E
                            MODEL NO.: 8017-01620P, WLU5150-D81,
                                        8017-01622P, 8017-01618P,
                                        8017-01619P, WLU5151-D81
                                FCC ID: H8N-WLU5150
                             RECEIVED: Oct. 11, 2011
                               TESTED: Nov. 17, 2011
                               ISSUED: Nov. 18, 2011




                 APPLICANT: Askey Computer Corp

                   ADDRESS: 10F, No. 119, Chienkang Rd Chung-Ho Taipei
                            Taiwan 235



                  ISSUED BY: Bureau Veritas Consumer Products Services (H.K.)
                             Ltd., Taoyuan Branch

             LAB ADDRESS: No. 47, 14th Ling, Chia Pau Vil., Lin Kou Dist., New
                          Taipei City, Taiwan (R.O.C)

          TEST LOCATION: No. 19, Hwa Ya 2nd Rd, Wen Hwa Tsuen, Kwei
                         Shan Hsiang, Taoyuan Hsien 333, Taiwan, R.O.C.



This test report consists of 21 pages in total. It may be duplicated completely for legal
use with the approval of the applicant. It should not be reproduced except in full,
without the written approval of our laboratory. The client should not use it to claim
product certification, approval or endorsement by TAF or any government agency. The
test results in the report only apply to the tested sample.




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Reference No.: 111117C17


                                         Table of Contents
RELEASE CONTROL RECORD..........................................................................................3
1.    LAB DECLARATION.................................................................................................4
2.    EUT INFORMATION.................................................................................................5
2.1   OPERATING FREQUENCY BANDS AND MODE OF EUT .....................................5
2.2   EUT SOFTWARE AND FIRMWARE VERSION .......................................................5
2.3   DESCRIPTION OF AVAILABLE ANTENNAS TO THE EUT.....................................5
2.4   EUT MAXIMUM AND MINIMUM CONDUCTED POWER ........................................6
2.5   EUT MAXIMUM AND MINIMUM E.I.R.P. POWER ...................................................7
2.6   STATEMENT OF MAUNFACTURER .......................................................................7
3.    U-NII DFS RULE REQUIREMENTS.........................................................................8
3.1   WORKING MODES AND REQUIRED TEST ITEMS ...............................................8
3.2   TEST LIMITS AND RADAR SIGNAL PARAMETERS ..............................................9
4.    TEST & SUPPORT EQUIPMENT LIST .................................................................. 11
4.1   TEST INSTRUMENTS ........................................................................................... 11
4.2   DESCRIPTION OF SUPPORT UNITS ................................................................... 11
5.    TEST PROCEDURE...............................................................................................12
5.1   ADT DFS MEASUREMENT SYSTEM:...................................................................12
5.2   CALIBRATION OF DFS DETECTION THRESHOLD LEVEL:................................13
5.3   DEVIATION FROM TEST STANDARD ..................................................................14
5.4   CONDUCTED TEST SETUP CONFIGURATION...................................................14
5.4.1 CLIENT WITHOUT RADAR DETECTION MODE ..................................................14
6.    TEST RESULTS .....................................................................................................15
6.1   SUMMARY OF TEST RESULTS ............................................................................15
6.2   DETELED TEST RESULTS....................................................................................16
6.2.1 TEST MODE: DEVICE OPERATING IN CLIENT WITHOUT RADAR DETECTION
      MODE        ..........................................................................................................16
6.2.2 CHANNEL CLOSING TRANSMISSION AND CHANNEL MOVE TIME..................17
6.2.3 NON- OCCUPANCY PERIOD ................................................................................19
7.    TESTING LABORATORIES INFORMATION..........................................................21




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                           RELEASE CONTROL RECORD
 ISSUE NO.                 REASON FOR CHANGE                 DATE ISSUED
 Original release          NA                                Nov. 18, 2011




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1. LAB DECLARATION

               PRODUCT: Wireless LAN Adaptor
             MODEL NO.: 8017-01620P, WLU5150-D81, 8017-01622P,
                                  8017-01618P, 8017-01619P, WLU5151-D81
                    BRAND: Panasonic
             APPLICANT: Askey Computer Corp
                   TESTED: Nov. 17, 2011
         TEST SAMPLE: ENGINEERING SAMPLE
            STANDARDS: FCC Part 15, Subpart E (Section 15.407)
                                  FCC 06-96


   The above equipment (model: 8017-01620P) has been tested by Bureau
   Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch, and
   found compliance with the requirement of the above standards. The test record,
   data evaluation & Equipment Under Test (EUT) configurations represented
   herein are true and accurate accounts of the measurements of the sample’s
   EMC characteristics under the conditions specified in this report.




   PREPARED BY             :                                    , DATE :       Nov. 18, 2011
                                   Pettie Chen / Specialist


   APPROVED BY             :                                    , DATE :       Nov. 18, 2011
                               Gary Chang / Technical Manager




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2. EUT INFORMATION

2.1 OPERATING FREQUENCY BANDS AND MODE OF EUT

             TABLE 1: OPERATING FREQUENCY BANDS AND MODE OF EUT
                                               OPERATING FREQUENCY RANGE
          OPERATIONAL MODE
                                           5250~5350MHz                 5470~5725MHz
 Client without radar detection and
                                                    9                           9
           ad hoc function
The EUT doesn’t operate in 5600 ~ 5650MHz via software controls.



2.2 EUT SOFTWARE AND FIRMWARE VERSION

                    TABLE 2: THE EUT SOFTWARE/FIRMWARE VERSION
                                                                   SOFTWARE/FIRMWARE
 NO.             PRODUCT                 MODEL NO.
                                                                        VERSION
                                       8017-01620P,
                                       WLU5150-D81,
                                       8017-01622P,
  1        Wireless LAN Adaptor                                         3.2.1.15
                                       8017-01618P,
                                       8017-01619P,
                                       WLU5151-D81



2.3 DESCRIPTION OF AVAILABLE ANTENNAS TO THE EUT

                                  TABLE 3: ANTENNA LIST
  ANT                                 OPERATION FREQUENCY
                 ANTENNA TYPE                                          MAX. GAIN (dBi)
  NO.                                     RANGE (MHz)
      1                    PCB                5250~5350                        3.81
      1                    PCB                5470~5725                        4.02




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2.4 EUT MAXIMUM AND MINIMUM CONDUCTED POWER

                TABLE 4: THE MEASURED CONDUCTED OUTPUT POWER


802.11a

                                  MAX. POWER           MIN. POWER
 ANT       FREQUENCY BAND
 NO.            (MHz)         OUTPUT     OUTPUT    OUTPUT     OUTPUT
                            POWER(dBm) POWER(mW) POWER(dBm) POWER(mW)
   1            5250~5350       18.4       69.2      12.4              17.4
   1            5470~5725       18.9       77.6      12.9              19.5


802.11n (20MHz)

                                  MAX. POWER           MIN. POWER
 ANT       FREQUENCY BAND
 NO.            (MHz)         OUTPUT     OUTPUT    OUTPUT     OUTPUT
                            POWER(dBm) POWER(mW) POWER(dBm) POWER(mW)
   1            5250~5350       17.6       57.5      11.6              14.5
   1            5470~5725       18.1       64.5      12.1              16.2


802.11n (40MHz)

                                  MAX. POWER           MIN. POWER
 ANT       FREQUENCY BAND
 NO.            (MHz)         OUTPUT     OUTPUT    OUTPUT     OUTPUT
                            POWER(dBm) POWER(mW) POWER(dBm) POWER(mW)
   1            5250~5350       16.6       45.7      10.6              11.5
   1            5470~5725       17.5       56.2      11.5              14.1




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2.5 EUT MAXIMUM AND MINIMUM E.I.R.P. POWER

                           TABLE 5: THE E.I.R.P OUTPUT POWER LIST
802.11a

                                         MAX. POWER                 MIN. POWER
 ANT       FREQUENCY BAND
 NO.            (MHz)                OUTPUT     OUTPUT    OUTPUT     OUTPUT
                                   POWER(dBm) POWER(mW) POWER(dBm) POWER(mW)
   1            5250~5350              22.2       166.3        16.2                 41.8
   1            5470~5725              22.9       195.9        16.9                 49.2


802.11n (20MHz)

                                         MAX. POWER                 MIN. POWER
 ANT       FREQUENCY BAND
 NO.            (MHz)                OUTPUT     OUTPUT    OUTPUT     OUTPUT
                                   POWER(dBm) POWER(mW) POWER(dBm) POWER(mW)
   1            5250~5350              21.4       138.4        15.4                 34.8
   1            5470~5725              22.1       162.9        16.1                 40.9


802.11n (40MHz)

                                         MAX. POWER                 MIN. POWER
 ANT       FREQUENCY BAND
 NO.            (MHz)                OUTPUT     OUTPUT    OUTPUT     OUTPUT
                                   POWER(dBm) POWER(mW) POWER(dBm) POWER(mW)
   1            5250~5350              20.4       109.9        14.4                 27.6
   1            5470~5725              21.5       141.9        15.5                 35.6




2.6 STATEMENT OF MAUNFACTURER

Manufacturer statement confirming that information regarding the parameters of
the detected Radar Waveforms is not available to the end user. And the device
doesn’t have Ad Hoc mode on DFS frequency band.




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3. U-NII DFS RULE REQUIREMENTS

3.1 WORKING MODES AND REQUIRED TEST ITEMS
The manufacturer shall state whether the UUT is capable of operating as a Master
and/or a Client. If the UUT is capable of operating in more than one operating
mode then each operating mode shall be tested separately. See tables 1 and 2 for
the applicability of DFS requirements for each of the operational modes.

  TABLE 6: APPLICABILITY OF DFS REQUIREMENTS PRIOR TO USE A CHANNEL
                                              OPERATIONAL MODE
           REQUIREMENT                        CLIENT WITHOUT          CLIENT WITH
                                    MASTER        RADAR                 RADAR
                                                DETECTION             DETECTION
       Non-Occupancy Period           9          Not required                 9
      DFS Detection Threshold         9          Not required                 9
  Channel Availability Check Time     9          Not required           Not required
          Uniform Spreading           9          Not required           Not required
     U-NII Detection Bandwidth        9          Not required                 9


TABLE 7: APPLICABILITY OF DFS REQUIREMENTS DURING NORMAL OPERATION
                                              OPERATIONAL MODE
           REQUIREMENT                        CLIENT WITHOUT          CLIENT WITH
                                    MASTER        RADAR                 RADAR
                                                DETECTION             DETECTION
      DFS Detection Threshold         9          Not required                 9
Channel Closing Transmission Time     9               9                       9
         Channel Move Time            9               9                       9
     U-NII Detection Bandwidth        9          Not required                 9




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3.2     TEST LIMITS AND RADAR SIGNAL PARAMETERS

DETECTION THRESHOLD VALUES
   TABLE 8: DFS DETECTION THRESHOLDS FOR MASTER DEVICES AND CLIENT
                     DEVICES WITH RADAR DETECTION

        MAXIMUM TRANSMIT POWER                             VALUE (SEE Note 1 and 2)

                   ≥ 200 milliwatt                                    -64 dBm
                   < 200 milliwatt                                    -62 dBm
Note 1: This is the level at the input of the receiver assuming a 0 dBi receive antenna.
Note 2: Throughout these test procedures an additional 1 dB has been added to the amplitude
of the test transmission waveforms to account for variations in measurement equipment. This
will ensure that the test signal is at or above the detection threshold level to trigger a DFS
response.

                     TABLE 9: DFS RESPONSE REQUIREMENT VALUES

                   PARAMETER                                          VALUE

Non-occupancy period                             Minimum 30 minutes
Channel Availability Check Time                  60 seconds
Channel Move Time                                10 seconds
                                                 See Note 1.
Channel Closing Transmission Time                200 milliseconds + an aggregate of 60
                                                 milliseconds over remaining 10 second period.
                                                 See Notes 1 and 2.
U-NII Detection Bandwidth                        Minimum 80% of the UNII 99% transmission
                                                 power bandwidth.
                                                 See Note 3.
Note 1: The instant that the Channel Move Time and the Channel Closing Transmission Time
begins is as follows:
• For the Short Pulse Radar Test Signals this instant is the end of the Burst.
• For the Frequency Hopping radar Test Signal, this instant is the end of the last radar
Burst generated.
• For the Long Pulse Radar Test Signal this instant is the end of the 12 second period defining
the Radar Waveform.
Note 2: The Channel Closing Transmission Time is comprised of 200 milliseconds starting at
the beginning of the Channel Move Time plus any additional intermittent control signals
required to facilitate a Channel move (an aggregate of 60 milliseconds) during the remainder of
the 10 second period. The aggregate duration of control signals will not count quiet periods in
between transmissions.
Note 3: During the U-NII Detection Bandwidth detection test, radar type 1 is used and for each
frequency step the minimum percentage of detection is 90 percent. Measurements are
performed with no data traffic.




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PARAMETERS OF DFS TEST SIGNALS
Step intervals of 0.1 microsecond for Pulse Width, 1 microsecond for PRI, 1 MHz for chirp
width and 1 for the number of pulses will be utilized for the random determination of
specific test waveforms.
                     TABLE 10: SHORT PULSE RADAR TEST WAVEFORMS
                                                                      MINIMUM
                       PULSE                                        PERCENTAGE  MINIMUM
                       WIDTH                              NUMBER OF
RADAR TYPE                                PRI (µsec)                     OF    NUMBER OF
                                                           PULSES
                       (µsec)                                       SUCCESSFUL   TRIALS
                                                                     DETECTION
         1                  1                  1428             18         60%                30
         2                 1-5             150-230             23-29       60%                30
         3                 6-10            200-500             16-18       60%                30
         4             11-20               200-500             12-16       60%                30
                   Aggregate (Radar Types 1-4)                             80%               120


                      TABLE 11: LONG PULSE RADAR TEST WAVEFORM

                       CHIRP                                            MINIMUM
             PULSE                       PRI       NUMBER                                 MINIMUM
 RADAR                                                       NUMBER PERCENTAGE OF
             WIDTH     WIDTH                      OF PULSES                              NUMBER OF
  TYPE                                 (µsec)               OF BURSTS SUCCESSFUL
             (µsec)    (MHz)                      PER BURST                                TRIALS
                                                                       DETECTION

    5        50-100        5-20       1000-2000         1-3       8-20     80%                 30


               TABLE 12: FREQUENCY HOPPING RADAR TEST WAVEFORM

              PULSE                                   HOPPING HOPPING     MINIMUM
                                                                                          MINIMUM
  RADAR                       PRI       PULSES         RATE   SEQUENCE PERCENTAGE OF
              WIDTH                                                                      NUMBER OF
   TYPE                     (µsec)      PER HOP                LENGTH   SUCCESSFUL
              (µsec)                                   (kHz)                               TRIALS
                                                               (msec)    DETECTION

     6           1              333        9           0.333         300   70%                 30




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4. TEST & SUPPORT EQUIPMENT LIST

4.1 TEST INSTRUMENTS

                               TABLE 1: TEST INSTRUMENTS LIST.
          DESCRIPTION &                                                             CALIBRATED
                                           MODEL NO.               BRAND
          MANUFACTURER                                                                UNTIL
       R&S Spectrum analyzer                 FSP40                   R&S               2012/02/22
           Signal generator                    8645A                Agilent            2012/06/09
              Oscilloscope                  TDS 5104               Tektronix           2012/05/16



4.2 DESCRIPTION OF SUPPORT UNITS

                             TABLE 2: SUPPORT UNIT INFORMATION.

NO.         PRODUCT              BRAND         MODEL NO.               FCC ID                GAIN
       Xtreme N DUO
  1                               D-Link        DIR-855            KA2DIR855A2               2dBi
       MEDIA ROUTER
NOTE: This device was functioned as a      Master        Slave device during the DFS test.


                           TABLE 3: POWER TABLE OF MASTER DEVICE.


                                                                Antenna gain
  Frequency and(MHz)           Conducted power (dBm)                                  EIRP (dBm)
                                                                    (dBi)
        5250~5350                      13.77                          2                    15.77
        5470~5725                      13.69                           2                   15.69
NOTE: EIRP is < 23dBm so detection threshold is -62dBm + 2dBi= -60dBm



                      TABLE 4: SOFTWARE/FIRMWARE INFORMATION.
                                                                       SOFTWARE/FIRMWARE
 NO.           PRODUCT                     MODEL NO.
                                                                            VERSION
       Xtreme N DUO MEDIA
  1.                                         DIR-855                               1.11
       ROUTER




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5. TEST PROCEDURE

5.1 ADT DFS MEASUREMENT SYSTEM:
A complete ADT DFS Measurement System consists of two subsystems: (1) the Radar
Signal Generating Subsystem and (2) the Traffic Monitoring Subsystem. The control PC is
necessary for generating the Radar waveforms in Table 6, 7 and 8. The traffic monitoring
subsystem is specified to the type of unit under test (UUT).

CONDUCTED SETUP CONFIGURATION OF ADT DFS MEASUREMENT
SYSTEM


                                                                       Radar Signal Generating
                      Control PC
                                                                             Subsystem




                      Spectrum                    Oscilloscope
                      Analyzer                                                Attenuator




                           C/S




        Attenuator                        Attenuator                            C/S



                                   Traffic Monitoring Subsystem

       Support Unit                                                            Master /
                                                                              Client with
                                                                             DFS function




The test transmission will always be from the Master Device to the Client Device. While the Client
device is set up to associate with the Master device and play the MPEG file (6  Magic Hours) from
Master device, the designated MPEG test file and instructions are located at:
http://ntiacsd.ntia.doc.gov/dfs/.




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5.2 CALIBRATION OF DFS DETECTION THRESHOLD LEVEL:

The measured channel is 5500MHz. The radar signal was the same as transmitted
channels, and injected into the antenna port of AP (master) or Client Device with
Radar Detection, measured the channel closing transmission time and channel
move time. The Master antenna gain is 2dBi and required detection threshold is
-60dBm (= -62+2)dBm. The calibrated conducted detection threshold level is set to
-60dBm. The tested level is lower than required level hence it provides margin to
the limit.

CONDUCTED SETUP CONFIGURATION OF CALIBRATION OF DFS
DETECTION THRESHOLD LEVEL



                           Control PC




                           Spectrum                            Oscilloscope   Radar Signal Generating
                           Analyzer                                                 Subsystem




                                      50Ω Load (Terminator)
                                                                                Attenuator


                                        C/S



   50Ω Load         Attenuator                                 Attenuator           C/S

 (Terminator)




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5.3 DEVIATION FROM TEST STANDARD
No deviation.


5.4 CONDUCTED TEST SETUP CONFIGURATION


5.4.1 CLIENT WITHOUT RADAR DETECTION MODE


                      Control PC




                      Spectrum                  Oscilloscope           Radar Signal Generating
                      Analyzer                                               Subsystem




                                                                              Attenuator

                           C/S




       Attenuator                       Attenuator                               C/S        Master




      Client (UUT)
                            Notebook                                                       Notebook




The UUT is a U-NII Device operating in Client mode without radar detection. The radar test signals
are injected into the Master Device.




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6. TEST RESULTS

6.1 SUMMARY OF TEST RESULTS

  CLAUSE                   TEST PARAMETER               REMARKS            PASS/FAIL

   15.407       DFS Detection Threshold                Not Applicable           NA

   15.407       Channel Availability Check Time        Not Applicable           NA

   15.407       Channel Move Time                       Applicable             Pass

   15.407       Channel Closing Transmission Time       Applicable             Pass

   15.407       Non- Occupancy Period                   Applicable             Pass

   15.407       Uniform Spreading                      Not Applicable           NA

   15.407       U-NII Detection Bandwidth              Not Applicable           NA

   15.407       Non-associated test                    Not Applicable           NA




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6.2 DETELED TEST RESULTS

6.2.1     TEST MODE: DEVICE OPERATING IN CLIENT WITHOUT RADAR
          DETECTION MODE.

Client with injection at the Master. (The radar test signals are injected into the
Master Device)

DFS DETECTION THRESHOLD
EIRP of master device is lower than 23 dBm and gain is 2 dBi (Refer to section 4.2).
Detection thresholds is -62dBm + 2dBi= -60dBm

                                                                RBW 3 MHz    Marker 1 [T1 ]
                                                                VBW 10 MHz             -60.03 dBm
                         Ref -20 dBm          * Att   0 dB      SWT 50 ms            7.100000 ms

                         -20

                                                                                                     A
                         -30

                  1 AP
                  VIEW                                                                              TRG
                         -40
                                                                                Radar signal
                         -50


                                                         1
                         -60

                                TRG -66 dBm
                         -70

                                                                                                    3DB
                         -80



                         -90



                         -100



                         -110


                         -120

                         Center 5.5 GHz                      5 ms/
                                                                                 Noise Floor




                                                       Radar Signal 1




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6.2.2 CHANNEL CLOSING TRANSMISSION AND CHANNEL MOVE TIME

RADAR SIGNAL 1
802.11AN 20MHz


                           Radar Signal




                                  Traffic Signal



                                                                            Noise Floor




NOTE: T1 denotes the start of Channel Move Time upon the end of the last Radar burst. T2
denotes the data transmission time of 200ms from T1. T3 denotes the end of Channel Move
Time.T4 denotes the 10 second from T1 to observe the aggregate duration of transmissions.




      Radar Signal




                                                                                     Noise Floor




NOTE: Room-in of the first 600ms after radar signal applied.




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RADAR SIGNAL 1
802.11AN 40MHz

                            Radar Signal




                                   Traffic Signal



                                                                             Noise Floor




NOTE: T1 denotes the start of Channel Move Time upon the end of the last Radar burst. T2
denotes the data transmission time of 200ms from T1. T3 denotes the end of Channel Move
Time.T4 denotes the 10 second from T1 to observe the aggregate duration of transmissions.




       Radar Signal




                                                                                      Noise Floor




NOTE: Room-in of the first 600ms after radar signal applied.




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6.2.3 NON- OCCUPANCY PERIOD

Associate test:
During the 30 minutes observation time, UUT did not make any transmissions on a
channel after a radar signal was detected on that channel by either the Channel
Availability Check or the In-Service Monitoring.

1) EUT (Client) links with master on 5500MHz.
                              Waveform of EUT links up with Master
                                                                       RBW 1 MHz   Marker 1 [T1 ]
                                                                       VBW 3 MHz             -77.48 dBm
                                  Ref -10 dBm      * Att   0 dB      * SWT 20 ms        5.475000000 GHz
                                      -10

                                                                                                          A
                                      -20

                           1 PK
                           VIEW
                                      -30



                                      -40



                                      -50



                                      -60

                                                                                                          3DB
                                      -70

                                  1

                                      -80



                                      -90



                                      -100


                                      -110

                                  Center 5.5 GHz                  5 MHz/                    Span 50 MHz




2) Client plays specified files via master.

                                                Waveform of transmission
                                                                       RBW 1 MHz   Marker 1 [T1 ]
                                                                       VBW 3 MHz             -71.81 dBm
                                  Ref -10 dBm      * Att   0 dB      * SWT 20 ms        5.475000000 GHz
                                      -10

                                                                                                          A
                                      -20

                           1 PK
                           VIEW
                                      -30

                           2 AP
                           VIEW
                                      -40



                                      -50



                                      -60

                                                                                                          3DB
                                  1 -70



                                      -80



                                      -90



                                      -100


                                      -110

                                  Center 5.5 GHz                  5 MHz/                    Span 50 MHz




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3) Radar signal 1 is applied to the Master device and WiFi traffic signal stop
   immediately.




4) 5500MHz has been monitored in 30 minutes period. In this period, no any
  transmission occurs.

                                        Plot of 30minutes period

802.11n 40MHz


                       Traffic Signal




NOTE: Test setup are shown on Test set up photo. pdf




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7. TESTING LABORATORIES INFORMATION


We, Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch,
were founded in 1988 to provide our best service in EMC, Radio, Telecom and
Safety consultation. Our laboratories are accredited and approved according to
ISO/IEC 17025.

Copies of accreditation and authorization certificates of our laboratories
obtained from approval agencies can be downloaded from our web site:
www.adt.com.tw/index.5.phtml. If you have any comments, please feel free to
contact us at the following:

Linko EMC/RF Lab:                             Hsin Chu EMC/RF Lab:
Tel: 886-2-26052180                           Tel: 886-3-5935343
Fax: 886-2-26051924                           Fax: 886-3-5935342

Hwa Ya EMC/RF/Safety Telecom Lab:
Tel: 886-3-3183232
Fax: 886-3-3185050

Email: service.adt@tw.bureauveritas.com
Web Site: www.adt.com.tw


The address and road map of all our labs can be found in our web site also.




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Document Created: 2011-11-29 14:50:32
Document Modified: 2011-11-29 14:50:32

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