Test Report

FCC ID: R7PEC6R1S2

Test Report

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FCCID_2534587

                                               Certification Test Report

                                                          FCC ID: R7PEC6R1S2
                                                           IC: 5294A-EC6R1S2


                                           FCC Rule Part: 15.247
                                 IC Radio Standards Specification: RSS-210

                                       ACS Report Number: 15-0028.W04.1A


                                    Manufacturer: Landis+Gyr Technology, Inc.
                                      Model: Gridstream RF Enhanced A3

                                              Test Begin Date: January 22, 2015
                                               Test End Date: January 22, 2015

                                          Report Issue Date: February 12, 2015




                                       FOR THE SCOPE OF ACCREDITATION UNDER LAB Code 200612-0

         This report is not be used to claim certification, approval, or endorsement by NVLAP, NIST or any government agency.




                                                Reviewed by:
                                                                   Kirby Munroe
                                                         Director, Wireless Certifications
                                                                     ACS, Inc.

This test report shall not be reproduced except in full. This report may be reproduced in part with prior written consent of ACS, Inc. The results contained in this report
                                                        are representative of the sample(s) submitted for evaluation.
                                                            This report contains 13 pages
                           5015 B.U. Bowman Drive Buford, GA 30518 USA Voice: 770-831-8048 Fax: 770-831-8598


                                                           TABLE OF CONTENTS
1      GENERAL .............................................................................................................................................. 3
    1.1        PURPOSE ............................................................................................................................................ 3
    1.2        PRODUCT DESCRIPTION ..................................................................................................................... 3
    1.3        TEST METHODOLOGY AND CONSIDERATIONS ................................................................................... 4
2      TEST FACILITIES................................................................................................................................ 5
    2.1      LOCATION ......................................................................................................................................... 5
    2.2      LABORATORY ACCREDITATIONS/RECOGNITIONS/CERTIFICATIONS.................................................. 5
    2.3      RADIATED EMISSIONS TEST SITE DESCRIPTION ................................................................................ 6
       2.3.1     Semi-Anechoic Chamber Test Site ........................................................................................... 6
       2.3.2     Open Area Tests Site (OATS) ................................................................................................... 7
    2.4      CONDUCTED EMISSIONS TEST SITE DESCRIPTION ............................................................................ 8
3      APPLICABLE STANDARD REFERENCES ..................................................................................... 8

4      LIST OF TEST EQUIPMENT.............................................................................................................. 9

5      SUPPORT EQUIPMENT.................................................................................................................... 10

6      EQUIPMENT UNDER TEST SETUP BLOCK DIAGRAM .......................................................... 10

7      SUMMARY OF TESTS....................................................................................................................... 11
    7.1      ANTENNA REQUIREMENT – FCC: SECTION 15.203......................................................................... 11
    7.2      RADIATED SPURIOUS EMISSIONS - FCC 15.205, 15.209; IC RSS-210 2.2, RSS-GEN 8.9/8.10....... 11
       7.2.1     Measurement Procedure ........................................................................................................ 11
       7.2.2     Measurement Results.............................................................................................................. 11
       7.2.3     Sample Calculation: ............................................................................................................... 12
8      CONCLUSION ..................................................................................................................................... 13




                    5015 B.U. Bowman Drive Buford, GA 30518 USA Voice: 770-831-8048 Fax: 770-831-8598


Model: Gridstream RF Enhanced A3             FCC ID: R7PEC6R1S2          IC: 5294A-EC6R1S2

1     GENERAL

1.1    Purpose

The purpose of this report is to demonstrate compliance with Part 15 Subpart C of the FCC’s
Code of Federal Regulations and Industry Canada’s Radio Standards Specification RSS-210 for
a class II permissive change.

The purpose of this Class II Permissive Change is to add a new antenna type/host combination to
the 900 MHz LAN frequency-hopping spread spectrum radio.

1.2    Product description

The Gridstream RF Enhanced A3 is an electronic endpoint module that will be integrated into the
Elster A2 C&I meter. This device contains two separate radios on a single PCB: a 900 MHz ISM
band frequency-hopping spread spectrum (FHSS) transceiver and a 2.4 MHz ISM band
transceiver employing 802.15.4/Zigbee.

The Gridstream RF Enhanced A3 is a composite device. The 900 MHz LAN radio and the 2.4
GHz Zigbee radio operate under CFR 47 Part 15.247 and IC RSS-210. This report addresses the
addition of the new antenna to the 900 MHz LAN radio only.

Technical Details:
The Gridstream RF Enhanced A3 provides 3 distinct frequency hopping modes of operation as
outlined below.

                         Frequency                           Channel          Data Rates
                                            Number of
Mode of Operation          Range                            Separation        Supported
                                            Channels
                           (MHz)                              (kHz)             (kbps)
                                                                             9.6, 19.2, 38.4,
          1             902.3 - 927.8           86             300
                                                                                  115.2
          2             904.0 - 927.9          240             100           9.6, 19.2, 38.4
          3             902.2 – 927.8          129             200                50.0


Modulation Format:     FSK/GFSK
Antenna Type/Gain:     PCB Inverted F (Module), +1dBi
Antenna Type/Gain:     Patch Antenna (External Adhesive Patch Coupler) – New to C2PC
Antenna/Type/Gain:     Omni Whip Antenna, 5.5 dBi gain (External) – New to C2PC
Operating Voltage:     4VDC (Host 120VAC)

Manufacturer Information:
Landis+Gyr Technology, Inc.
30000 Mill Creek Ave., Suite 100
Alpharetta, GA 30022

EUT Serial Numbers: 810C0004

Test Sample Condition: The test samples were provided in good working order with no visible
defects.




ACS Report: 15-0028.W06.1A              Advanced Compliance Solutions                Page 3


Model: Gridstream RF Enhanced A3               FCC ID: R7PEC6R1S2         IC: 5294A-EC6R1S2


1.3   Test Methodology and Considerations

The antenna included in this filing is connected to the EUT host via an adhesive patch antenna.
The intention of the patch antenna is to couple to the EUT 900 MHz LAN antenna over-the-air.
The coupled signal is then to be routed, via coax, to the antenna described in this filing. The
Gridstream RF Enhanced A3 module was integrated into a representative host for showing
compliance with the new antenna configuration.

Software power setting during test: 138




ACS Report: 15-0028.W06.1A                Advanced Compliance Solutions              Page 4


Model: Gridstream RF Enhanced A3             FCC ID: R7PEC6R1S2            IC: 5294A-EC6R1S2

2     TEST FACILITIES

2.1     Location

The radiated and conducted emissions test sites are located at the following address:

      Advanced Compliance Solutions
      5015 B.U. Bowman Drive
      Buford, GA 30518
      Phone: (770) 831-8048
      Fax: (770) 831-8598


2.2     Laboratory Accreditations/Recognitions/Certifications

ACS is accredited to ISO/IEC 17025 by the National Institute of Standards and Technology under
their National Voluntary Laboratory Accreditation Program (NVLAP), Lab Code 200612-0. Unless
otherwise specified, all tests methods described within this report are covered under the ISO/IEC
17025 scope of accreditation.

The Semi-Anechoic Chamber Test Site, Open Area Test Site (OATS) and Conducted Emissions
Site have been fully described, submitted to, and accepted by the FCC, Industry Canada and the
Japanese Voluntary Control Council for Interference by information technology equipment.

FCC Registration Number: 511277
Industry Canada Lab Code: IC 4175A
VCCI Member Number: 1831
•       VCCI OATS Registration Number R-1526
•       VCCI Conducted Emissions Site Registration Number: C-1608




ACS Report: 15-0028.W06.1A             Advanced Compliance Solutions                    Page 5


Model: Gridstream RF Enhanced A3               FCC ID: R7PEC6R1S2              IC: 5294A-EC6R1S2


2.3     Radiated Emissions Test Site Description

2.3.1    Semi-Anechoic Chamber Test Site

The Semi-Anechoic Chamber Test Site consists of a 20’ x 30’ x 18’ shielded enclosure. The
chamber is lined with Toyo Ferrite Grid Absorber, model number FFG-1000. The ferrite tile grid is
101 x 101 x 19mm thick and weighs approximately 550 grams. These tiles are mounted on steel
panels and installed directly on the inner walls of the chamber.

The turntable is 150cm in diameter and is located 160cm from the back wall of the chamber. The
chamber is grounded via 1 – 8’ copper ground rod, installed at the center of the back wall, it is
bound to the ground plane using 3/4” stainless steel braided cable.

The turntable is all steel, flush mounted table installed in an all steel frame. The table is remotely
operated from inside the control room located 25’ from the range. The turntable is electrically
bonded to the surrounding ground plane via steel fingers installed on the edge of the turn table.
The steel fingers make constant contact with the ground plane during operation.

Behind the turntable is a 3’ x 6’ x 4’ deep shielded pit used for support equipment if necessary.
The pit is equipped with 1 – 4” PVC chases from the turntable to the pit that allow for cabling to
the EUT if necessary. The underside of the turntable can be accessed from the pit so cables can
be supplied to the EUT from the pit.

A diagram of the Semi-Anechoic Chamber Test Site is shown in Figure 2.3-1 below:




                                             3 Meters


                                                                         5 Feet
                                                                        Diameter




                                                                                    20 Feet


                                               30 Feet
                        Figure 2.3-1: Semi-Anechoic Chamber Test Site




ACS Report: 15-0028.W06.1A               Advanced Compliance Solutions                     Page 6


Model: Gridstream RF Enhanced A3              FCC ID: R7PEC6R1S2              IC: 5294A-EC6R1S2


2.3.2   Open Area Tests Site (OATS)

The open area test site consists of a 40’ x 66’ concrete pad covered with a perforated electro-
plated galvanized sheet metal. The perforations in the sheet metal are 1/8” holes that are
staggered every 3/16”. The individual sheets are placed to overlap each other by 1/4” and are
riveted together to provide a continuous seam. Rivets are spaced every 3” in a 3 x 20 meter
perimeter around the antenna mast and EUT area. Rivets in the remaining area are spaced as
necessary to properly secure the ground plane and maintain the electrical continuity.

The entire ground plane extends 12’ beyond the turntable edge and 16’ beyond the antenna mast
when set to a 10 meter measurement distance. The ground plane is grounded via 4 – 8’ copper
ground rods, each installed at a corner of the ground plane and bound to the ground plane using
3/4” stainless steel braided cable.

The turntable is an all aluminum 10’ flush mounted table installed in an all aluminum frame. The
table is remotely operated from inside the control room located 40’ from the range. The turntable
is electrically bonded to the surrounding ground plane via steel fingers installed on the edge of
the turn table. The steel fingers make constant contact with the ground plane during operation.

Adjacent to the turntable is a 7’ x 7’ square and 4’ deep concrete pit used for support equipment if
necessary. The pit is equipped with 5 – 4” PVC chases from the pit to the control room that allow
for cabling to the EUT if necessary. The underside of the turntable can be accessed from the pit
so cables can be supplied to the EUT from the pit. The pit is covered with 2 sheets of 1/4”
diamond style re-enforced steel sheets. The sheets are painted to match the perforated steel
ground plane; however the underside edges have been masked off to maintain the electrical
continuity of the ground plane. All reflecting objects are located outside of the ellipse defined in
ANSI C63.4.

A diagram of the Open Area Test Site is shown in Figure 2.3-2 below:



                                             10Meter

                                                        3 Meters



                                                                                  40Feet




                                                                      7x7x4
                                                                       Pit

                                           66 Feet

                               Figure 2.3-2: Open Area Test Site




ACS Report: 15-0028.W06.1A              Advanced Compliance Solutions                      Page 7


Model: Gridstream RF Enhanced A3                 FCC ID: R7PEC6R1S2             IC: 5294A-EC6R1S2


2.4       Conducted Emissions Test Site Description

The AC mains conducted EMI site is located in the main EMC lab. It consists of an 8’ x 8’ solid
aluminum horizontal ground reference plane (GRP) bonded every 3” to an 8’ X 8’ vertical ground
plane.

The site is of sufficient size to test table top and floor standing equipment in accordance with
section 6.1.4 of ANSI C63.4.

A diagram of the room is shown below in figure 2.4-1:



                   Vertical Ground Plane (8’ x 8’)




                                                      Non-Conductive EUT Table
                                                          (1m x 1.5m x .8m)


              .4 Meters




                 .8 Meters


                                                            Horizontal Ground Plane (8’ x 8’)

               LISN
                             Figure 2.4-1: AC Mains Conducted EMI Site

3     APPLICABLE STANDARD REFERENCES

The following standards were used:

          ANSI C63.10-2013: American National Standard of Procedures for Compliance Testing of
           Unlicensed Wireless Devices
          US Code of Federal Regulations (CFR): Title 47, Part 2, Subpart J: Equipment Authorization
           Procedures, 2015
          US Code of Federal Regulations (CFR): Title 47, Part 15, Subpart C: Radio Frequency Devices,
           Intentional Radiators, 2015
          Industry Canada Radio Standards Specification: RSS-210 – Low-power License-exempt
           Radiocommunication Devices (All Frequency Bands): Category I Equipment, Issue 8, December
           2010
          Industry Canada Radio Standards Specification:    RSS-GEN – General Requirements for
           Compliance of Radio Apparatus, Issue 4, Nov 2014.




ACS Report: 15-0028.W06.1A                 Advanced Compliance Solutions                    Page 8


  Model: Gridstream RF Enhanced A3                            FCC ID: R7PEC6R1S2                 IC: 5294A-EC6R1S2

 4        LIST OF TEST EQUIPMENT

 The calibration interval of test equipment is annually or the manufacturer’s recommendations.
 Where the calibration interval deviates from the annual cycle based on the instrument
 manufacturer’s recommendations, it shall be stated below.

                                            Table 4-1: Test Equipment
                                                                                                                Calibration
AssetID         Manufacturer           Model #         Equipment Type        Serial #   Last Calibration Date    Due Date
   1          Rohde & Schwarz        ESMI - Display   Spectrum Analyzers   833771/007         7/11/2014          7/11/2015
   2          Rohde & Schwarz        ESMI-Receiver    Spectrum Analyzers   839587/003         7/11/2014          7/11/2015
  30        Spectrum Technologies     DRH-0118            Antennas           970102           4/23/2013          4/23/2015
  40               EMCO                  3104             Antennas            3211            2/14/2013          2/14/2015
  73               Agilent              8447D             Amplifiers       2727A05624         7/15/2014          7/15/2015
                                     Chamber EMI
 167                ACS                Cable Set          Cable Set           167           10/28/2014          10/28/2015
                                     SMR-290AW-
 292          Florida RF Cables       480.0-SMR            Cables             None           3/17/2014          3/17/2015
 337          Microwave Circuits      H1G513G1             Filters           282706           6/2/2014           6/2/2015
 338           Hewlett Packard          8449B             Amplifiers       3008A01111        7/30/2013          7/30/2015
 412            Electro Metrics         LPA-25            Antennas            1241           7/24/2014          7/24/2016
                                    SMS-200AW-72.0-
 422             Florida RF              SMR               Cables             805            11/5/2014          11/5/2015
                                    SMRE-200W-12.0-
 616          Florida RF Cables         SMRE               Cables             N/A            9/10/2014          9/10/2015




 ACS Report: 15-0028.W06.1A                           Advanced Compliance Solutions                             Page 9


Model: Gridstream RF Enhanced A3              FCC ID: R7PEC6R1S2         IC: 5294A-EC6R1S2

5       SUPPORT EQUIPMENT

                              Table 5-1: Support Equipment
Item      Equipment Type    Manufacturer Model Number                 Serial Number
           FM 3S Electric
    1                           Elster               CL20            TRG014979657
            Utility Meter
                               Hewlett
    2     DC Power Supply                            E3630A            KR64308603
                               Packard


6       EQUIPMENT UNDER TEST SETUP BLOCK DIAGRAM




                  Antenna

                                A                             Patch Coupling Antenna


                                                 EUT
                                                              B          2



                                                 1




    A: RF Cable, 75 cm, Shielded
    B: DC Power Wires, 200 cm, Non-Shielded

                            Figure 6-1: Test Setup Block Diagram




ACS Report: 15-0028.W06.1A               Advanced Compliance Solutions                 Page 10


Model: Gridstream RF Enhanced A3            FCC ID: R7PEC6R1S2           IC: 5294A-EC6R1S2

7     SUMMARY OF TESTS

Along with the tabular data shown below, plots were taken of all signals deemed important
enough to document.

7.1     Antenna Requirement – FCC: Section 15.203

The external antenna is connected to the EUT via an adhesive coupling patch antenna.
Professional installation is utilized. The antenna is an omni-directional whip antenna with a
maximum gain of +5.5 dBi.

7.2     Radiated Spurious Emissions - FCC 15.205, 15.209; IC RSS-210 2.2, RSS-Gen
        8.9/8.10

7.2.1    Measurement Procedure

Radiated emissions tests were made over the frequency range of 30MHz to 10GHz, 10 times the
highest fundamental frequency.

The EUT was rotated through 360° and the receive antenna height was varied from 1m to 4m so
that the maximum radiated emissions level would be detected. For frequencies below 1000MHz,
quasi-peak measurements were made using a resolution bandwidth RBW of 120 kHz and a video
bandwidth VBW of 300 kHz. For frequencies above 1000MHz, peak and average measurements
were made with RBW and VBW of 1 MHz and 3MHz respectively.

The EUT was caused to generate a continuous modulated carrier on the hopping channel.

Each emission found to be in a restricted band was compared to the applicable radiated emission
limits.

7.2.2    Measurement Results

Radiated spurious emissions found in the band of 30MHz to 10GHz are reported in the Table
7.2.2-1 below.




ACS Report: 15-0028.W06.1A            Advanced Compliance Solutions                  Page 11


Model: Gridstream RF Enhanced A3                    FCC ID: R7PEC6R1S2                          IC: 5294A-EC6R1S2

                Table 7.2.2-1: Radiated Spurious Emissions Tabulated Data
                       Level       Antenna      Correction       Corrected Level            Limit                 Margin
  Frequency           (dBuV)       Polarity      Factors            (dBuV/m)              (dBuV/m)                 (dB)
    (MHz)
               pk        Qpk/Avg    (H/V)         (dB)           pk        Qpk/Avg     pk       Qpk/Avg     pk        Qpk/Avg
                                               Low Channel
   2706.3     50.14       43.21       H           -4.44        45.70        38.77     74.0       54.0     28.3         15.2
   2706.3     51.36       45.88       V           -4.44        46.92        41.44     74.0       54.0     27.1         12.6
   3608.4     49.35       40.75       H           -1.16        48.19        39.59     74.0       54.0     25.8         14.4
   3608.4     48.41       38.33       V           -1.16        47.25        37.17     74.0       54.0     26.7         16.8
   4510.5     48.58       39.40       H            0.97        49.55        40.37     74.0       54.0     24.5         13.6
   4510.5     49.16       40.42       V            0.97        50.13        41.39     74.0       54.0     23.9         12.6
   5412.6     48.16       42.14       H            3.47        51.63        45.61     74.0       54.0     22.4         8.4
   5412.6     49.27       43.11       V            3.47        52.74        46.58     74.0       54.0     21.3         7.4
   8118.9     47.05       37.06       H            7.80        54.85        44.86     74.0       54.0     19.1         9.1
   8118.9     46.45       36.35       V            7.80        54.25        44.15     74.0       54.0     19.7         9.8
                                              Middle Channel
    2745      50.63       44.17       H           -4.30        46.33        39.87     74.0       54.0     27.7         14.1
    2745      50.13       43.29       V           -4.30        45.83        38.99     74.0       54.0     28.2         15.0
    3660      47.12       36.73       H           -0.97        46.15        35.76     74.0       54.0     27.9         18.2
    8235      46.45       36.78       H            7.87        54.32        44.65     74.0       54.0     19.7         9.4
    8235      46.18       36.43       V            7.87        54.05        44.30     74.0       54.0     20.0         9.7
                                              High Channel
   960.05                 35.63       H            2.00        ---------    37.63    --------    54.0     ---------    16.4
   960.05                 39.48       V            2.00        ---------    41.48    --------    54.0     ---------    12.5
   2783.7     51.44       46.38       H           -4.16         47.28       42.22     74.0       54.0      26.7        11.8
   2783.7     53.36       49.38       V           -4.16         49.20       45.22     74.0       54.0      24.8        8.8


7.2.3 Sample Calculation:
RC = RU + CFT

Where:
CFT      =     Total Correction Factor (AF+CA+AG)-DC (Average Measurements Only)
RU       =     Uncorrected Reading
RC       =     Corrected Level
AF       =     Antenna Factor
CA       =     Cable Attenuation
AG       =     Amplifier Gain
DC       =     Duty Cycle Correction Factor

Example Calculation: Peak

Corrected Level: 50.14 - 4.44 = 45.70dBuV/m
Margin: 74dBuV/m – 45.70dBuV/m = 28.3dB

Example Calculation: Average

Corrected Level: 43.21 - 4.44 - 0 = 38.77dBuV
Margin: 54dBuV – 38.77dBuV = 15.2dB




ACS Report: 15-0028.W06.1A                    Advanced Compliance Solutions                                       Page 12


Model: Gridstream RF Enhanced A3           FCC ID: R7PEC6R1S2           IC: 5294A-EC6R1S2

8   CONCLUSION

In the opinion of ACS, Inc. the Gridstream RF Enhanced A3, manufactured by Landis+Gyr
Technology, Inc. meets the requirements of FCC Part 15 subpart C and Industry Canada’s Radio
Standards Specification RSS-210.




                                   END REPORT




ACS Report: 15-0028.W06.1A           Advanced Compliance Solutions                 Page 13



Document Created: 2015-02-12 14:23:38
Document Modified: 2015-02-12 14:23:38

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