SAR Report Rider

FCC ID: WR2-FLEX-T5300

RF Exposure Info

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FCCID_3054236

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                                                                                                                Date: June 22, 2016
Federal Communications Commission
Authorization and Evaluation Division
7435 Oakland Mills Rd
Columbia MD 21046—1609

Subject: SAR Report Rider
FCC ID: WR2—FLEX—T5300

To whom it may concern:
Spirent Communications formally requests that you accept this document as a rider to SAR report number FA621931. The
SAR report was issued by SPORTON INTERNATIONAL INC. (the SAR laboratory used for the evaluation of T5300 Tech—X
Flex NG2 with Spectrum).

The system level FCC ID to which the SAR testing corresponds is WR2—FLEX—T5300. As per the report, testing was
conducted on the T5300 Tech—X Flex NG2 with Spectrum containing the SparkLAN WPEA—352ACN Wi—Fi module.

Secondary radio, Redpine Signals RS9113 with Molex Dual Band antenna (MPN 047951001), was excluded from testing at
the SAR laboratory on direction by Spirent. Spirent concluded that SAR testing was not necessary based on calculations for
SAR exclusion defined in KDB 447498 D01 v06 "RF EXPOSURE PROCEDURES AND EQUIPMENT AUTHORIZATION
POLICIES FOR MOBILE AND PORTABLE DEVICES®".

Specifically, the exclusion is based on the following measured maximum values of 2.4 GHz band 19.98 dBm, UNII—1 band
12.04 dBm and UNII—3 13.35 dBm which can be found in reports "EMC88304—FCC247", "EMC88304—FCC4O7 UNII 1" and
"EMC88304—FCC4OT7 UNII 3" respectively. With these maximum values applied to the exclusion equation and based on
76mm separation to human hand, the Redpine Signals RS9113 can be excluded from SAR testing.

The following information details the SAR test exclusion for Redpine radio RS9113 contained in T5300 Tech—X Flex NG2 FCC
ID WR2—FLEX—T5300.

Spirent established the following minimum and test separation distances from the Redpine RS9113 antenna (see Figure 1
and Figure 2).

    e   Minimum distance from Redpine RS9113 antenna to the exterior of the EUT is 8mm

    e   Minimum test separation distance from human hand to Redpine RS9113 antenna is 76mm




         Spirent Communications | 5280 Corporate Drive, Suite A100 | Frederick, MD 21703 USA | Tel 301—444—2400 | spirent.com


SAR Report Rider
June 22, 2016
Page 2




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               Figure 1 — Antenna Locations (Redpine RS9113 is Antenna D with 8mm to exterior plastic)


SAR Report Rider
June 22, 2016
Page 3




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             Figure 2 — Test separation (hand location versus very conservative 76mm distance usedfor calculations)


According to KDB 447498 DO1 v0O6 SAR exclusion calculations are based on the following equations.

   a)    For 100 MHz to 6 GHz and test separation distances < 50 mm, the 1—g and 10—g SAR test exclusion thresholds
         are determined by the following:
         [(max. power of channel, including tune—up tolerance, mW) I (min. test separation distance, mm)] : [~f(GHz)]


    b)   For 100 MHz to 6 GHz and test separation distances > 50 mm, the 1—g and 10—g SAR test exclusion thresholds are
         determined by the following (also illustrated in Appendix B):32
         e    {[Power allowed at numeric threshold for 50 mm in step a)] + [(test separation distance — 50 mm)—(f(MHz)/150)]} mW, for 100
              MHz to 1500 MHz
         e    {[Power allowed at numeric threshold for 50 mm in step a)] + [(test separation distance — 50 mm)—10]} mW, for > 1500 MHz
              and < 6 GHz


                                    Report                        Max dBm      Calculated max mW
                                    EMC88304—FCC247                   19.98           99.54054174
                                    EMC88304—FCC407 UNII 1            12.04           15.99558029
                                    EMC88304—FCC407 UNII 3            13.35           21.62718524
                                 Table 1 — maximum power readings measuredfor Redpine RS9113


SAR Report Rider
June 22, 2016
Page 4




                                      "KDB 447498 DO1 v06" step A 4.3.1 calculated with min
                                        separation of 8mm and max power from RF reports
                                               19.47569906 mW            @ 2450MHz
                                              4,559441888 mW             @ 5200MHz
                                              6.510644913 mW             @ 5800MHz
  Table 2 — minimum separation threshold values calculatedfrom maximum power readings measuredfor Redpine RS9113




                        Extrapolated
                       Threshold from          Calculated            Max mW                      Note
               MHz       table (mW)        Threshold (mW)            measured
                100        491 .2              21.26801873                            Not valid Tx freq for radio
                150          413               30.81898576                            Not valid Tx freq for radio
                300          326               58.81507501                            Not valid Tx freq for radio
                450          302               86.34672817                            Not valid Tx freq for radio
                835        308 .6              156.1031445                            Not valid Tx freq for radio
                900         314                167.8040562                            Not valid Tx freq for radio
               1500         382                275.238971                            Not valid Tx freq for radio
               1900         369                277.150896                            Not valid Tx freq for radio
               2450         356                279.4756991
               3600         339               283.6081124                            Not valid Tx freq for radio
               5200         326               288.3734199                            Not valid Tx freq for radio
               5400         325               288s.913914s      __|____ 15                                  iteria .
               5800         322               289.9656712       |            y
                                  Table 3 — Exclusion thresholds based on >5Omm separation

Explanation of Table 3 is as follows:
    e   Extrapolated Threshold is shown only for reference (from Appendix B of KDB 447498 DO1 v06)
    e   Calculated Threshold uses the minimum thresholds from Table 2 in conjunction with the appropriate equation. For
        example:
            o At 2450 MHz the calculated min spacing threshold is 19.47569906 mW . Using 76mm separation for the min
                hand spacing we have the following equation:

                   »   (19.47569906 mW) + ((76mm —50mm) * 10) = 279.4757 mW exclusion threshold.

                   Y   Maximum measured power of 99.540542 mW is well below the calculated threshold.


SAR Report Rider
June 22, 2016
Page 5




Note that both SparkLAN WPEA—352ACN and Redpine Signals RS9113 (both radios internal to FCC ID WR2—FLEX—1T5300)
do not and cannot transmit simultaneously as defined by Spirent firmware control. Additionally, the T5300 Tech—X Flex NG2
with Spectrum is not body worn equipment.


Thank you for your consideration in this matter.




      / CO{/4a
      Ccw
      Engineering and Compliance Manager
      Spirent Communications, Inc.
      Tel: +1 (301) 444—2480
      E—mail: juan.abreu@spirent.com



Document Created: 2016-06-22 14:04:35
Document Modified: 2016-06-22 14:04:35

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