SK9AMI-3CENTRON II ELECTRICITY METER

Itron, Inc.

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Application Details

Equipment Class: DTS - Digital Transmission System
Date of Grant: Apr 14, 2008
Application Purpose: Original Equipment
Date of Application: Apr 10, 2008
Equipment Note: CENTRON II ELECTRICITY METER
Frequency Range: 2405.00000000 - 2475.00000000
Company: Itron, Inc.
Country: United States

Documents & Files

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Document Text

Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.

Cover Letter(s)

Federal Communications Commission Date: March 25, 2008 Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Gentlemen: Itron, Inc. respectfully requests confidentiality of certain materials provided with the submission of the C2SOD under FCC ID: SK9AMI-3 in accordance with FCC Regulations 0.459. The confidentiality request applies to the parts list, schematics, block diagrams, internal photos, theory of operation and manual contained in the following exhibits. 08-0028 – Parts List.pdf 08-0028 – Schematics.pdf 08-0028 – System Block Diagram.pdf 08-0028 – Internal Photos.pdf 08-0028 – Theory of Operation.pdf 08-0028 – Manual.pdf Confidentiality of the Internal Photos is being requested because this is a non-consumer device which is not accessible by the general public and is only serviceable by the grantee or designated technicians. The User’s Guide is very technical and is not provided to the consumer because the consumer cannot service or install the device. Therefore confidentiality of the User’s Guide is also requested. The C2SOD has been developed at considerable effort and expense by Itron, Inc. These items are considered as Trade Secrets and therefore public access to the proprietary material could possible result in duplication of equipment that could severely damage the company's business advantage. I appreciate your assistance in this matter. Sincerely, Name: Lee Littlejohn Signature: Title: Regulatory Engineer Date: March 25, 2008

External Photos

ID Label/Location Info

RF Exposure Info

5015 B.U. Bowman Drive Buford, GA 30518 USA Voice: 770-831-8048 Fax: 770-831-8598 Certification Exhibit FCC ID: SK9AMI-3 IC: 864G-AMI3 FCC Rule Part: 15.247 IC Radio Standards Specification: RSS-210 ACS Report Number: 08-0028 Manufacturer: Itron Electricity Metering, Inc. Model: C2SOD RF Exposure Model: C2SOD FCC ID: SK9AMI-3 IC ID: 864G-AMI3 5015 B.U. Bowman Drive Buford, GA 30518 USA Voice: 770-831-8048 Fax: 770-831-8598 General Information: Applicant: Itron Electricity Metering, Inc. ACS Project: 08-0028 FCC ID: SK9AMI-3 Device Category: Mobile Environment: General Population/Uncontrolled Exposure Simultaneous Transmission: Yes Technical Information 900 MHz Antenna Type: Embedded Quarter Wave Slot Antenna Gain: 0dBi Transmitter Radiated Power: 21.74dBm Maximum System EIRP: 21.74dBm Technical Information 2400 MHz Antenna Type: Embedded Quarter Wave Slot Antenna Gain: 0dBi Transmitter Radiated Power: 17.25dBm Maximum System EIRP: 17.25dBm MPE Calculation The Power Density (mW/cm 2 ) is calculated as follows: S = 2 4R PG π Where: S = power density (in appropriate units, e.g. mW/cm2) P = power input to the antenna (in appropriate units, e.g., mW) G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna (appropriate units, e.g., cm) MPE Calculator for Mobile Equipment Limits for General Population/Uncontrolled Exposure* 902.2521.740.60149.2801.000 200.030 240517.251.0053.0901.000 200.011 Power Densit y (mW/cm^2) Distance (cm) Transmit Frequency (MHz) Radio Power (dBm) Power Density Limit (mW/Cm2) Radio Power (mW) Antenna Gain (dBi) Antenna Gain (mW eq.) Summation of Power Densities – Simultaneous Transmissions This device contains multiple transmitters which can operate simultaneously and therefore the maximum RF exposure is determined by the summation of power densities. The 900 MHz LAN and 2.4GHz Zigbee radio can operate simultaneously there it is appropriate to include both of those power density values in the same summation of power densities. The maximum power density is calculated by a summation of power densities for each simultaneous transmission combination as follows: 900MHz LAN: 0.030 (mW/cm^2) 2.4GHz Zigbee: 0.011 (mW/cm^2) TOTAL: 0.041 (mW/cm^2) Model: C2SOD FCC ID: SK9AMI-3 IC ID: 864G-AMI3 5015 B.U. Bowman Drive Buford, GA 30518 USA Voice: 770-831-8048 Fax: 770-831-8598 Installation Guidelines The installation manual should contain text similar to the following advising how to install the equipment to maintain compliance with the FCC RF exposure requirements: RF Exposure In accordance with FCC requirements of human exposure to radio frequency fields, the radiating element shall be installed such that a minimum separation distance of 20 centimeters will be maintained. Conclusion This device complies with the MPE requirements by providing adequate separation between the device, any radiating structure and the general population.

Test Report

5015 B.U. Bowman Drive Buford, GA 30518 USA Voice: 770-831-8048 Fax: 770-831-8598 Certification Test Report Direct Sequence Spread Spectrum Transmitter Test Report FCC ID: SK9AMI-3 IC: 864G-AMI3 FCC Rule Part: 15.247 IC Radio Standards Specification: RSS-210 ACS Report Number: 08-0028-2400-DTS Manufacturer: Itron Electricity Metering, Inc. Model: C2SOD Test Begin Date: January 31, 2008 Test End Date: March 17, 2008 Report Issue Date: April 7, 2008 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. Prepared by: Reviewed by: J. Kirby Munroe Manager Wireless Certifications ACS, Inc. R. Sam Wismer Engineering Manager 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 23 pages 5015 B.U. Bowman Drive Buford, GA 30518 USA Voice: 770-831-8048 Fax: 770-831-8598 Table of Contents 1.0 General 3 1.1 Purpose 3 1.2 Product Description 3 1.2.1 General 3 1.2.2 Intended Use 3 1.3 Test Methodology and Considerations 3 2.0 Test Facilities 4 2.1 Location 4 2.2 Laboratory Accreditations/Recognitions/Certifications 4 2.3 Radiated Emissions Test Site Description 5 2.3.1 Semi-Anechoic Chamber Test Site 5 2.3.2 Open Area Tests Site (OATS) 6 2.4 Conducted Emissions Test Site Description 7 3.0 Applicable Standards and References 7 4.0 List of Test Equipment 8 5.0 Support Equipment 9 6.0 EUT Setup Block Diagram 9 7.0 Summary of Tests 10 7.1 Antenna Requirement 10 7.2 Power Line Conducted Emissions 10 7.2.1 Test Methodology 10 7.2.2 Test Results 10 7.3 Radiated Emissions (Unintentional Radiation) 11 7.3.1 Test Methodology 11 7.3.2 Test Results 11 7.4 6 dB Bandwidth 12 7.4.1 Test Methodology 12 7.4.1 Test Results 12 7.5 Peak Output Power 14 7.5.1 Test Methodology 14 7.5.2 Test Results 14 7.6 Band-Edge Compliance and Spurious Emissions 16 7.6.1 Band-Edge Compliance 16 7.6.1.1 Test Methodology 16 7.6.1.2 Test Results 16 7.6.2 Conducted Spurious Emissions 18 7.6.2.1 Test Methodology 18 7.6.2.2 Test Results 18 7.6.3 Radiated Spurious Emissions 21 7.6.3.1 Test Methodology 21 7.6.3.2 Duty Cycle Correction 21 7.6.3.3 Test Results 21 7.6.3.4 Sample Calculation 21 7.7 Power Spectral Density 22 7.7.1 Test Methodology 22 7.7.2 Test Results 22 8.0 CONCLUSION 23 Additional Exhibits Included In Filing Internal Photographs External Photographs Test Setup Photographs Product Labeling RF Exposure – MPE Calculations Installation/Users Guide Theory of Operation BOM (Parts List) System Block Diagram Schematics Model: C2SOD FCC ID: SK9AMI-3 IC ID: 864G-AMI3 ACS Report: 08-0028-2400-DTS Advanced Compliance Solutions Page 3 1.0 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. 1.2 Product Description 1.2.1 General The OpenWay CENTRON meter is a solid-state meter used for measuring electrical energy consumption. The OpenWay CENTRON meter incorporates a two-piece design combining a base metrology with a variety of OpenWay registers or options. The metrology portion of the meter contains all measurement circuitry and calibration information, while the personality modules contain the register functionality and communication mediums. The register boards contain (1) 900 MHz LAN frequency hopping spread spectrum radio and (1) 2.4 GHz direct sequence spread spectrum Zigbee radio. These transmitters can operate simultaneously and inter-modulation data is presented in Section 7.6.3. Manufacturer Information: Itron Electricity Metering, Inc. 313 North Highway 11 West Union, SC 29696 Test Sample Condition: The test samples were provided in good working order with no visible defects. Detailed photographs of the EUT are filed separately with this filing. 1.2.2 Intended Use The OpenWay CENTRON meter is a solid-state meter used for measuring electrical energy consumption. 1.3 Test Methodology and Considerations The C2SOD operates at multiple voltages from the AC mains. All input voltages were evaluated and in some instances only the worst case data presented in this report. This device is considered a composite device by definition. 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 2400 MHz Zigbee radio only and a separate report, 08-0028-900-DSS, will be issued for the 900 MHz radio. Model: C2SOD FCC ID: SK9AMI-3 IC ID: 864G-AMI3 ACS Report: 08-0028-2400-DTS Advanced Compliance Solutions Page 4 2.0 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 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. In addition, ACS is compliant to ISO 17025 as certified by the National Institute of Standards and Technology under their National Voluntary Laboratory Accreditation Program. The following certification numbers have been issued in recognition of these accreditations and certifications: FCC Registration Number: 894540 Industry Canada Lab Code: IC 4175 VCCI Member Number: 1831 VCCI OATS Registration Number R-1526 VCCI Conducted Emissions Site Registration Number: C-1608 NVLAP Lab Code: 200612-0 Model: C2SOD FCC ID: SK9AMI-3 IC ID: 864G-AMI3 ACS Report: 08-0028-2400-DTS Advanced Compliance Solutions Page 5 2.3 Radiated Emissions Test Site Description 2.3.1 Semi-Anechoic Chamber Test Site The Semi-Anechoic Chamber Test S…

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Test Setup Photos

Contact Information

Applicant

Christopher O'Steen(Compliance Engineer)

Christopher.O'[email protected]864-718-6702Fax: 864-718-6871

Test Firm

Advanced Compliance Solutions, Inc.Sam Wismer

[email protected]770-831-8048Fax: 770-831-8598

Technical Specifications

#	Rule Parts	Frequency Range	Power Output
1	15C	2.40 GHz - 2.48 GHz	53.00 mW

Confidentiality

Long Term

Grant Notes

Power listed is conducted. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. End-users and installers must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance.