OPERATIONAL DESCRIPTION

FCC ID: SK9C1A-2

Operational Description

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FCC Part 15 Transmitter Certification Test Report FCC ID: SK9C1A-2 FCC Rule Part: 15.247 ACS Report Number: 04-0396-15C Manufacturer: Itron Electricity Metering, Inc. Equipment Type: Electricity Meter With Dual RF Transmitters Trade Name: CENTRON ™ ICARe Model: C1A-2 Theory of Operations 5015 B.U. Bowman Drive Buford, GA 30518 USA Voice: 770-831-8048 Fax: 770-831-8598

Page 1 of 29 Functional Specification TITLE: CENTRON ICARe Functional Specification AUTHOR: D.P. McConnell REV CCO DESCRIPTION OF CHANGE DATE APPROVALS 23 Sep Project Leader D. McConnell 2004 A INITIAL RELEASE Manager – 29 Dec Residential F. Kobbi 2004 Metering REVISION HISTORY Update to support version 1.9.0 13 Jul B Project Leader D. McConnell Firmware 2004 28 Dec C Update to Itron Document Project Leader D. McConnell 2004 (Function) NOTICE OF PROPRIETARY INFORMATION Information contained herein is proprietary and is property of ITRON, Inc. where furnished with a proposal, the recipient shall use it solely to evaluate the proposal. Where furnished to a customer it shall be used solely for the purposes of inspection, installation or maintenance. Where furnished to a supplier, it shall be used solely in the performance of work contracted for this company. The information shall not be used or disclosed by the recipient for any other purpose, whatsoever. ITRON CONFIDENTIAL

ICARe Project Functional Specification REVISION CHART Version Primary Description of Version Date Author(s) Completed Draft DP McConnell Initial draft 9/23/2002 Draft DP McConnell Incorporated comments from Jerome Bartier, Eric 9/25/2002 Deschamps and Vladimir Borisov Draft DP McConnell Updated document with management requests 9/26/2002 Draft DP McConnell Added R300 functionality 10/1/2002 Draft DP McConnell Added Interval and randomization examples 10/11/2002 Draft DP McConnell Added RF power consumption assumptions 10/14/2002 Draft DP McConnell MCU Requirements made more generic 11/19/2002 Draft DP McConnell Updated document for company split and to address 1/16/2002 selected MCU Draft DP McConnell Changed CRF900 to COSMOS 3/31/2003 Draft DP McConnell Changed CentronCRF to ICARe 4/10/2003 Draft DP McConnell Updated document to reduce overlap with architectural 5/15/2003 spec Draft DP McConnell Inserted Mobile Network Section 7/14/2003 Draft DP McConnell Incorporated comments from Product Services 8/23/2003 Draft M.Peters/ Updated Hardware and Firmware sections 12/19/2003 P.Chiummiento Preliminary DP McConnell Cleaned up format and made final changes from 1/15/2004 previous spec Preliminary DP McConnell Added display functionality 2/20/2004 Preliminary DP McConnell Added changes for Cellnet/RMR meter types 6/15/2004 Final DP McConnell Update for 1.9 Firmware separating Cellnet & RMR 7/13/2004 Final DP McConnell Update for Itron 12/28/2004 Confidential Page 2 12/29/2004

ICARe Project Functional Specification TABLE OF CONTENTS DESCRIPTION OF CHANGE ....................................................................................................................................1 APPROVALS...........................................................................................................................................................1 REVISION HISTORY ............................................................................................................................................1 INTRODUCTION ..............................................................................................................................................................6 Description ...............................................................................................................................................................6 Endpoint Function ...................................................................................................................................................6 References: ...............................................................................................................................................................6 RF NETWORK SERVICES ................................................................................................................................................6 CellNet® Network System Services........................................................................................................................6 Information Provided .............................................................................................................................................6 FCC Regulation .....................................................................................................................................................6 RF Characteristics for Fixed Network ...................................................................................................................6 R300 Mobile Network System.................................................................................................................................6 Information Provided .............................................................................................................................................6 FCC Regulation .....................................................................................................................................................6 RF Characteristics for Mobile Network.................................................................................................................6 Schlumberger R900 Mobile Network System........................................................................................................6 Information Provided .............................................................................................................................................6 FCC Regulation .....................................................................................................................................................6 RF Characteristics for Mobile Network.................................................................................................................6 SYSTEM HARDWARE REQUIREMENTS ............................................................................................................................6 Power Supply Specification.....................................................................................................................................6 Power supply inputs and outputs description.........................................................................................................6 Specification on inputs and outputs .......................................................................................................................6 Power grid input specification ...........................................................................................................................6 Serial Port interface power input specification ..................................................................................................6 3.4V regulated output specification ...................................................................................................................6 2.65V regulated output specification .................................................................................................................6 Power Supply output current specification ............................................................................................................6 RF Section Specification..........................................................................................................................................6 CRF ASIC part ......................................................................................................................................................6 RF on board circuitry.............................................................................................................................................6 CENTRON Meter Metrology Interface specification...........................................................................................6 Display Specification................................................................................................................................................6 Energy Options ......................................................................................................................................................6 Manufacturing Segment Test .................................................................................................................................6 Operational Segment Test......................................................................................................................................6 Display Configuration Options ..............................................................................................................................6 Manufacturing specification ...................................................................................................................................6 Test Points .............................................................................................................................................................6 Manufacturability ..................................................................................................................................................6 Mechanical guidelines ...........................................................................................................................................6 Qualification.............................................................................................................................................................6 SYSTEM FIRMWARE REQUIREMENTS .............................................................................................................................6 Confidential Page 3 12/29/2004

ICARe Project Functional Specification Firmware Description..............................................................................................................................................6 Firmware Requirements .........................................................................................................................................6 SYSTEM RF OPERATION ................................................................................................................................................6 RF Characteristics ...................................................................................................................................................6 Fixed Network Description .....................................................................................................................................6 Spreading Code......................................................................................................................................................6 Mobile Network Description...................................................................................................................................6 R300 / R900 Transmissions.....................................................................................................................................6 Transmission Randomization .................................................................................................................................6 Fixed Network Randomization ..............................................................................................................................6 Fixed Network Intervals ........................................................................................................................................6 R300 / R900 Mobile Network Randomization ......................................................................................................6 Mobile Channel Selection......................................................................................................................................6 SPECIFICATIONS & STANDARDS.....................................................................................................................................6 Specifications............................................................................................................................................................6 Electrical................................................................................................................................................................6 Operating Environment..........................................................................................................................................6 Meter Base Requirements .......................................................................................................................................6 External Standards ..................................................................................................................................................6 ANSI Standards .....................................................................................................................................................6 FCC Regulations....................................................................................................................................................6 CFR Title 47,Part 15, Subpart C, Paragraph 247 ...............................................................................................6 CFR Title 47,Part 15, Subpart C, Paragraph 249 ...............................................................................................6 Internal Standards...................................................................................................................................................6 Confidential Page 4 12/29/2004

ICARe Project Functional Specification LIST OF FIGURES AND TABLES Table 1 Fixed Network (CellNet) RF Transmitter Characteristics ________________________________________ 6 Table 2 Mobile Network (R300/R900) RF Transmitter Characteristics ____________________________________ 6 Table 3 COSMOS Voltage Specifications ___________________________________________________________ 6 Table 4 Digital Circuit Voltage Requirements _______________________________________________________ 6 Table 5 Component Current Requirements __________________________________________________________ 6 Table 6 Power Supply Current Requirements ________________________________________________________ 6 Table 7 CENTRON Interface Pinout _______________________________________________________________ 6 Table 8 ICARe Firmware Modes __________________________________________________________________ 6 Table 9 Mobile Channel Selections ________________________________________________________________ 6 Table 10 Transmitter & Receiver Channels _________________________________________________________ 6 Table 11 Meter Specification Types________________________________________________________________ 6 Figure 1 RF Network Interfaces __________________________________________________________________ 6 Figure 2 ICARe Block Diagram __________________________________________________________________ 6 Figure 3 Metrology Energy Pulses ________________________________________________________________ 6 Figure 4 LSYNC Signal _________________________________________________________________________ 6 Figure 5. 5 digit X 1 display _____________________________________________________________________ 6 Figure 6. 4 digits X 1 and 4 digits X 10 display ______________________________________________________ 6 Figure 7 Unprogrammed Manufacturing Segment Test Display _________________________________________ 6 Figure 8 Operational Display Segment Test _________________________________________________________ 6 Table 9 Display Configuration Codes ______________________________________________________________ 6 Table 10 Program Code Display Time (Seconds) _____________________________________________________ 6 Figure 11 ICARe Modes of Operation______________________________________________________________ 6 Figure 12 Fixed Network Bandwidth_______________________________________________________________ 6 Figure 13 Fixed Network DSSS Pattern ____________________________________________________________ 6 Figure 14 Mobile Network Transmission Bandwidth __________________________________________________ 6 Figure 15 Mobile OOK versus Manchester Encoding _________________________________________________ 6 Figure 16 Fixed Network Interval Randomization ____________________________________________________ 6 Figure 17 Cumulative 2 with 18 Intervals ___________________________________________________________ 6 Figure 18 Cumulative 3 with 10 Intervals ___________________________________________________________ 6 Figure 19 Mobile Network Randomization __________________________________________________________ 6 Confidential Page 5 12/29/2004

ICARe Project Functional Specification INTRODUCTION This document will describe the functional design specification for the ICARe RF electricity meter. The purpose of this project is to provide a meter module based on the COSMOS RFASIC developed in Montrouge, France and produced by Atmel. The design will allow the CENTRON meter to communicate in both the mobile and fixed network environments. Description The ICARe will be a transmit-only meter module that collects and transmits metering data over the 902 - 928 MHz Industrial, Scientific and Medical (ISM) RF band. The unit will contain both a Direct Sequence Spread Spectrum (DSSS) transmitter and a Frequency Hopping (FSK) transmitter. Endpoint Function The ICARe functions as a RF transmitter that is capable of supporting remote meter reading using mobile and fixed network protocols. The mobile network functions will be the R300 (ITRON™ protocol) or the R900 (SURF© protocol). The fixed network function will be the CellNet© electricity endpoint protocol (PID2) to maintain legacy functionality. The endpoint will be installed in the CENTRON meter as the register board. The metrology board will provide power and energy data to the endpoint in the same manner as a normal register board. The endpoint will provide the following data depending on configuration and firmware option: • Cumulative energy readings using the ITRON protocol • Cumulative energy readings using the Schlumberger SURF protocol • Cumulative and interval readings using the CellNet by Atos Origin protocol The endpoint will determine electrical energy data by counting pulses from the metrology board and then converting them to energy values for display and transmission. The endpoint will use a constant loaded during configuration to provide the correct energy values for the network being supported. The endpoint will also use a serial protocol for configuration and testing using the register serial port. It is also necessary for the endpoint to be able to be installed on previous meter bases with no modifications to the base to maintain the modularity requirement of the CENTRON meter. References: COSMOS RFASIC Requirements, by Gilles Picard Schlumberger Qualification Test Specification for Solid-State Electricity Metering Products, SLB-QTS 5.0 SURF protocol Schlumberger Unlicensed Radio Frequency Protocol specifications, Version 1.0 dated June 9, 1998 Electric Interval Packet Transmission Randomization, White Paper, by Susan Stulz dated 24 June 2002 ICARe RF Protocols Specification ICARe Product Vision ICARe Business Case Confidential Page 6 12/29/2004

ICARe Project Functional Specification RF NETWORK SERVICES CellNet Fixed R300 Mobile Network Network R900 Mobile Network ISM 900 MHz Mobile Network FSK Transmitter 123 4 5 ISM 900 MHz Fixed Network DSSS Transmitter CENTRON ICARe RF Meter Figure 1 RF Network Interfaces CellNet® Network System Services The ICARe RF module will transmit a single channel of data at the 917 MHz using a Binary Phase Shift Keying (BPSK) spread spectrum transmitter. The transmitter is capable of transmitting both the On-Off-Keying (OOK) and the Cyclic Code Shift Keying (CCSK) chipping methods. The fixed network transmitter is capable of providing output power of 24 ±1 dBm to the antenna. The fixed network module transmits standard CellNet Protocol Identification 2 (PID2) packets to the network. Refer to the ICARe RF Protocols Specification for message format and details. Information Provided The ICARe will provide the following information to the CellNet fixed network: • Local Area Network Identifier (LAN ID) • Meter ID • Register Configuration • Cumulative Active Energy delivered daily • 10 or 18 Active consumption data intervals • Power fail notification • Reverse power flow notification • Magnet switch activation flag FCC Regulation The fixed network transmitter operates and meets the requirements in the US code of federal regulations (CFR) Title 47, part 15, subpart C, paragraph 247 of the FCC rules. Confidential Page 7 12/29/2004

ICARe Project Functional Specification RF Characteristics for Fixed Network Function Requirement RF Frequency 917.58 MHz Spreading Modulation OOK & BPSK (CCSK) Conducted Power Output 24 dBm ±1 dB (into 50 ohm load at 25° C) Power Output Temperature Variation ±2 dB from –40/+85°C Effective Radiated Power (ERP) +28 dBm minimum peak Carrier Suppression <+3 dB in 3 kHz RBW to adjacent spectral components Side Lobe Suppression -13 dB to main lobe Data Modulation OOK and CCSK Symbol Data Rate 19.27 kBPS for OOK and CCSK Chipping Code Length 63 bits for OOK and CCSK Preamble Length 92 (93 CCSK) bits Transmit Duration 11.0 msec to 23.5 msec FCC Certification Per Part 15.247 Table 1 Fixed Network (CellNet) RF Transmitter Characteristics R300 Mobile Network System The R300 is a frequency-hopping RF transmitter that operates in the 910 to 920 MHz band. It transmits on an average of once per second with a randomized time interval to reduce interference and collisions. The R300 module transmits an Itron standard consumption message (SCM) protocol composed of 96-bits of data. Refer to the ICARe RF Protocols Specification for message format and details. Information Provided The ICARe will provide the following services to the Itron Mobile network: • Module ID • Meter Type • Cumulative Active Energy • Tamper Information FCC Regulation The mobile network transmitter operates and meets the requirements in the US code of federal regulations (CFR) Title 47, part 15, subpart C, paragraph 249 and paragraph 247 of the FCC rules. RF Characteristics for Mobile Network Function Requirement RF Frequency 910 to 920 MHz Spreading Modulation OOK Conducted Power Output -8 dBm conducted (Para 249), 5 dBm conducted (Para 247) Power Output Variation over Temperature ±3 dBm Effective Radiated Output Power (ERP) -13 dBm peak (94 dBuV/m) @ 3 Meters (Para 249) 4.5 dBm peak @ 3 Meters (Para 247) On Air Transmission Time 6.71 milliseconds (SCM), 7.4 milliseconds (SURF) per channel Data Modulation OOK Data Rate 16.384 kBPS (32 KHz clock, Manchester coded data) Data Pacing 1 Packet per second typical (125 milliseconds minimum) Number of Channels 64 or 50 Utilized, 77 Receiver channels Channel Bandwidth <200 KHz transmitter, 208 KHz receiver Frequency Stability <750 KHz/ Packet Frequency Accuracy ±3.75 MHz Max over Temperature FCC Certification Per Part 15.249 and/or 15.247 Table 2 Mobile Network (R300/R900) RF Transmitter Characteristics Confidential Page 8 12/29/2004

ICARe Project Functional Specification Schlumberger R900 Mobile Network System The R900 is a frequency-hopping RF transmitter that operates in the 910 to 920 MHz band. It transmits on an average of once every 2 to 4 seconds with a randomized time interval to reduce interference and collisions. The R900 will operate at 0 dBm ±3 dBm to the antenna. The R900 module transmits an Schlumberger SURF consumption message protocol composed of 116-bits of data. Refer to the ICARe RF Protocols Specification for message format and details. Information Provided The ICARe will provide the following standard services to the CellNet fixed network: • Module ID • Meter Type • Cumulative Active Energy • Tamper Information FCC Regulation The fixed network transmitter operates and meets the requirements in the US code of federal regulations (CFR) Title 47, part 15, subpart C, paragraph 249 of the FCC rules. RF Characteristics for Mobile Network Same as defined by the R300 in section 2.2.3. Confidential Page 9 12/29/2004

ICARe Project Functional Specification SYSTEM HARDWARE REQUIREMENTS The ICARe will function as a transmit-only meter module that will be installed in the register board slot in the CENTRON electricity meter. It will be configurable to provide a single channel of data to the CellNet fixed network or a single channel of data to the R300/R900 mobile networks or a combination of the two mobile network. Metrology Board Interface Sign & Energy 240VAC Pulses&Vdd_metrology Shooter (Cellnet) Port Connector 18VDC Asynchronous Serial Data SPI Atmel Voltage_cap_check ATmega169 Microcontroller 3.4 V Voltage regulator SPI LCD SPI Data EEPROM Display 3.4VDC 2.65VDC POWER SUPPLY SPI Serial 2.65V internal Interface voltage regulator DIGITAL SECTION 3.4VDC Zeroer Port connector 2.65VDC Fixed Network Filter Transmission VCO, analog and digital Circuit Circuit Antenna synthesizer,digital control, analog base band cells Switching Circuit Mobile Network Filter Transmission Circuit Circuity RF SECTION CRF900 RFASIC Figure 2 ICARe Block Diagram The CENTRON meter is composed of the base, the register board and the meter cover. The base contains the metrology board and provides energy pulses and voltage via the interface connector to the register board. This section will deal with the signals coming to the register board via the interface as well as the register board. Power Supply Specification The power supply will be designed to meet the requirements of cost (PCB, component count, component cost), voltage regulation (normal processing, power fail detection) and current consumption (RF transmission, digital processing and voltage regulation) Power supply inputs and outputs description The power supply will use external discrete components to get a regulated 3.4V from the 240VAC/120VAC main. This 3.4V will then be supplied to both the internal CRF voltage regulator and the internal CRF RF Power Amplifiers. The internal CRF voltage regulator will then provide a regulated 2.65V voltage to the micro- controller, EEPROM, CRF VCO, CRF analog and digital synthesizer, CRF digital control and the analog base band cell. Inputs: • 120 VAC or 240 VAC from the Metrology Board Interface when the meter is plug into a base • 18 VDC unregulated from the Serial Port Interface when it is connected Outputs: Confidential Page 10 12/29/2004

ICARe Project Functional Specification • Regulated 3.4 VDC for the internal CRF power amplifier and voltage regulator • Regulated 2.65 VDC for the Digital section and the CRF internal digital and analog cells Specification on inputs and outputs Power grid input specification The power supply is required to be capable of drawing power from both 120VAC and 240VAC-power line with minor changes. The power supply operational conditions are: • The power line could have a 20% voltage variation o 120 VAC: 96 VAC< Power line < 144 VAC o 240 VAC: 192 VAC< Power line < 288 VAC • The power supply will be capable of handling a 0 VAC potential for up to 100ms without triggering a power fail • Power fail detection should be triggered when: o 120 VAC: power line voltage< 72 VAC for >100 mS o 240 VAC: power line voltage<144 VAC for >100 mS Serial Port interface power input specification The power supply will have an additional requirement of being capable to accept an unregulated 18 VDC via the serial port. 3.4V regulated output specification The 3.4V regulated will have to meet the specification for the COSMOS internal voltage regulator as well for the COSMOS internal Power amplifier supply voltage: Device Minimum Typical Maximum Voltage Voltage Voltage CRF Power Amplifier 2.4 VDC 3.75 VDC CRF Voltage Regulator 3.2 VDC 3.3 VDC 3.6 VDC Supply Ripple 20 mVpp Table 3 COSMOS Voltage Specifications 2.65V regulated output specification The 2.65 VDC regulated outputs from the COSMOS are the preferable voltage sources for this design since they were designed specifically for the COSMOS voltage requirements and they will reduce the overall component costs. The CRF internal voltage regulators provide: • One source for the internal features of the CRF controllable by the MCU. • One source for the Digital circuitry on the board that is constantly on as long as 3.4 VDC is supplied. The 2.65V digital source meets the specification for all the major digital components in the design. Device Minimum Maximum Voltage Voltage Atmega169V Microcontroller 1.8 VDC 5.5 VDC MicroChip 8kbit EEPROM 1.8 VDC 5.5 VDC CRF Internal Devices 1.8 VDC 3.15 VDC Table 4 Digital Circuit Voltage Requirements Confidential Page 11 12/29/2004

ICARe Project Functional Specification Power Supply output current specification Part Descriptions Maximum Current Value Micro-controller Atmega169V 16K ROM part CPU No sleep mode, run at 1Mhz on internal RC 0.7mA oscillator Analog Digital Converter (ADC) standby when it is not used (200uS max 300uA active/5uA standby conversion time~40 ADC clock)(200Khz clock) 8Kbit part Standby mode 0.5uA EEPROM Write 16-Byte page sequence in 5ms max 3mA Read sequence at 2Mhz clock 0.5mA RF Transmitter Shutdown mode 10uA Serial Communication 1Mhz max 0.5mA COSMOS RFASIC Crystal and PLL stabilization in 10ms max 1.5mA Fix Transmission 25ms max at 23dBm 350mA Mobile Transmission 10ms at 8dBm 30mA Pull up to convert a +/-2.5V in 0V-2.5V logic 130uA low/0uA high Watt hour pulse duration 10ms 130uA Metrology Board Interface Lsync pulse 65uA Energy sign 130uA positive/0uA negative Power supply regulation Power Supply Voltage capacitor detector 70uA Quiescent current in the LDO 100uA Table 5 Component Current Requirements From the above table the following charge quantities will be needed for each operation as well as the DC current that the Power Supply will have to provide. Event Description Total Charge Needed Average Current Each 150s-period, the algorithm will write and read Read:1.5uC I_EEPROM=1.5uA @ (worse case) 250Khz=>250bit/ms~32byte/ms~2page/ms) Write:90uC 150s period 2 locations of 2 pages of the EEPROM. Total:91.5uC CRF transmission steps: COSMOS RFASIC Serial communication: 54-byte max Serial com:1uC I_CELLNET=(8.75+0.01 for a CCSK plus ~10 bytes for CRF configuration and Crystal+PLL:15uC 5+0.001)/300=30uA start of transmission (@250Khz~64Byte/2ms) Cellnet:8.75mC I_MOBILE=(0.3+0.015+ 25.58Mhz Crystal + PLL stabilization Mobile:300uC 0.001)/1=316uA Cellnet transmission every 300s period Mobile transmission every 1s period Analog/Digital Converter (ADC): ADC conversion:0.06uC I_Check_Cap=15uA Check the capacitor voltage every 9ms I_Check_RMS=15uA Check for Temperature Compensation every 9ms I_Check_Metro=15uA Check the metrology power supply(Vdd) every 9ms Metrology board interface : I_Lsync=65uA 3 lines are coming from the metrology: I_positive_sign=130uA Sign : when the energy is positive the line is at –2.5V I_32HzWhpulse=41.6uA Lsync: Squared signal between 2.5V and –2.5V @60hz Whpulse: -2.5V 10ms-pulse for one unity of 50Wh. Max frequency is 32Hz. Table 6 Power Supply Current Requirements In Normal mode without transmission, the power supply should handle the following current: • MCU - 700uA • Metrology Board Interface Circuitry – 240 uA (no input pulses present) • MCU ADC – 50 uA • COSMOS Standby Current – 500 uA Confidential Page 12 12/29/2004

ICARe Project Functional Specification • Power Supply – 180 uA • Total of 1.7mA DC current Here are the criteria that the power supply is required to provide: • Handle 1.7mA DC current • Handle 350mA-25ms transmission every 300s • Handle 30mA-8ms transmission every 1s • Handle 350mA 20ms power transmission • All requirements are valid for 15 years product life time • Power up the board and ready to transmit in less than 8.2s (see manufacturing specification) RF Section Specification CRF ASIC part CRF ASIC is handling the major functions required by the network: • Receive data from microprocessor and modulate it following the Cellnet protocol • Receive data from microprocessor and modulate it following the R300 or R900 or SURF protocol • Each timing related to the RF data is handle by the CRF ASIC through a 25.48833MHz crystal RF on board circuitry The RF circuitry is divided in two sections: • Antenna • Matching between antenna and the CRF ASIC The antenna is required to: • Have a minimum 0dB gain at 917.58MHz for both horizontal and vertical polarization • Be matched for 50ohms in the 910MHz-920MHz band The matching circuit between the CRF ASIC and the antenna: • Design a strip-line balun for both Cellnet and mobile Power amplifiers • For Cellnet, the Power amplifiers need to matched both at the fundamental (917.58MHz) and the second harmonic (1.835GHz) • For Mobile, the power amplifier need to matched over the band 910MHz-920MHz • Harmonics rejecter low pass filter to be design to have a minimum 40dB attenuation for harmonics 3,4 and 5 • For Cellnet, balun and filter losses should be lower than 2dB • For Mobile, balun and filter losses should be lower than 8dB CENTRON Meter Metrology Interface specification The endpoint will utilize the standard CENTRON interface for power and energy readings consisting of the following signals. Pin Number Signal 1 120/240 VAC 2 +2.5 VDC 3 LSYNC 4 Sign Pulse 5 Watthour Pulse 6 -2.5 VDC 7 GND Table 7 CENTRON Interface Pinout The two outputs of the metrology board from pins 4 and 5 are pulses that represent the watthours measured and the direction (sign) of the energy flow. The Watthour Pulse is a normally high signal with a 10 millisecond; low going pulse to represent the energy signal. The sign pulse is either a high signal representing a negative energy flow or low signal representing a positive Confidential Page 13 12/29/2004

ICARe Project Functional Specification energy flow. +2.5 V Watt Hour Pulse -2.5 V 10 mS 10 mS +2.5 V Energy Sign Pulse Negative Energy Flow Positive Energy Flow -2.5 V Figure 3 Metrology Energy Pulses The LSYNC signal is a 60 Hz square wave that will be present as long as power is available on the main. This is the signal that should be monitored to calibrate in real time the internal RC oscillator of the microprocessor +2.5 V -2.5 V 60 Hz Figure 4 LSYNC Signal For interfacing to the register board microcontroller, the signals from the metrology board will have to be level shifted to 2.65V-0V levels. Display Specification The ICARe display will be the same as the CENTRON ACE register. It will display the following: • Detented kWh • Non Detented kWh • Net (Future addition, not in the first release) Energy Options The ICARe will be capable of displaying the following options for energy: 5 digit x 1 detented and nondetented DEL NET REC DET kWh Figure 5. 5 digit X 1 display 4 digit X 1 detented and nondetented 4 digit X 10 detented and nondetented Confidential Page 14 12/29/2004

ICARe Project Functional Specification DEL NET REC DET kWh Figure 6. 4 digits X 1 and 4 digits X 10 display Manufacturing Segment Test The ICARe will also provide a segment display test for manufacturing when the EEPROM is not programmed as show in figure 7. Segment is Illuminated when the PWB is in the vertical position and clear in the horizontal position D EL N ET REC D ET kWh Figure 7 Unprogrammed Manufacturing Segment Test Display Operational Segment Test Finally, the ICARE will provide a segment test that can be configured to work with the kWh display. Note: The watt-disk emulator should continue to operate normally during normal operation independent of the configuration. DEL NET REC DET kWh Figure 8 Operational Display Segment Test Display Configuration Options The display configuration utilizes one of the following programming codes to enable the energy display and the segment test display. The Upper nibble represents the display time and the lower nibble represents the segment test display time. Confidential Page 15 12/29/2004

ICARe Project Functional Specification Display Display Segment Display Off Program Code Description On Time Off Time Test Time Time F0 Energy Always Displayed Always 0 0 0 F1 Energy & Segment Test 15 Sec 1 Sec 1 Sec 1 Sec E0 Energy 14 Sec 1 Sec 0 0 XX Energy & Segment Test 1-14 Sec 1 Sec 1-15 Sec 1 Sec 0X Segment Test 0 1 Sec 1-15 Sec 1 Sec Table 9 Display Configuration Codes For the time options for the individual program code nibbles are as follows: Nibble Display Time 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 A 10 B 11 C 12 D 13 E 14 F 15 Table 10 Program Code Display Time (Seconds) Manufacturing specification Test Points The module will contain test points to support manufacturing operations as well as providing necessary access to signals for debugging both the hardware and firmware. Each node of the circuit requires a test point. All the Test points will be used in ICT test whereas only some of the test points will be use to perform the FVT test. Manufacturing is specifying that the test points should be either all on the bottom layer of the board or on the top layer of the board. The number of test point per board should be limited to 102 test points (maximum of 2048 test points available on a fixture and panel of 20 boards). The test point should also be numerated from 0 to 101. Manufacturability • The component count cannot exceed 150 components on the design • The unit must have test points for ICT and FVT testing • Increase of the number of boards per panel from 16 to 20. Note: This will reduce the total board area and with the new LCD holder it will have an impact on the size of the onboard slot antenna. • All components have to be surface mount to eliminate any through-hole processes. • In order to meet the present burden and overhead costs of the RMR, the power supply will have to handle a transmission within 8.2s after power up while test in process. • During the Meter Functional Test (MFT), the meter will be fully assembled with no external access to the board. A magnet to produce a magnet packet for the CellNet fixed network application will trigger the RF transmissions. Mechanical guidelines • The board material structure should follow the following optimum conditions: Confidential Page 16 12/29/2004

ICARe Project Functional Specification ƒ 4 layers (layer1->14mils->layer2->28mils->layer3->14mils->layer4) ƒ Material will be a FR4 (permitivity close to 4.6) ƒ Inner layer should be 1oz thick (start and finish), external layer should start with 0.5oz thickness and finish with 1oz thickness • Copper should stay at 20 mils from the edge of the board after scoring operation (manufacturing cutting operation requirement) • Use of the new board-to-board connector pads (bigger pads for GND and 240VAC) • Use of the newest LCD pads developed by mechanical Engineer to decrease problem in manufacturing • Keep a space for the new bar code developed by manufacturing Qualification The module will be able to pass all standard qualification tests per the Schlumberger Electricity Qualification Test Specification listed in the references in section 6. Confidential Page 17 12/29/2004

ICARe Project Functional Specification SYSTEM FIRMWARE REQUIREMENTS The firmware will be located in the MCU ROM with a maximum of 16 kBytes of code space. The firmware will encompass the functionality of the Cellnet and SURF protocols. The firmware will be written in “C” for portability requirements. The code will be modular in nature with each unique function having it’s own module. This will enhance the reuse capability of the code for future projects. The code will be maintained using version control software at all times. The firmware should attempt to maintain commonality with existing CENTRON products as much as possible. This will reduce the risk of introducing problems that have already been resolved back into the system. Both the CENTRON and RTEMS teams should review all firmware. Firmware Description The firmware will operate in several states shown in figure 2. These states will be used to validate ICARe power levels, support existing serial interfaces, verify and load the static and dynamic data, process metrology and power fail signals, update the LCD, save and verify dynamic data, and create and schedule RF messages for transmissions as needed. This diagram is the “large picture” with the details of the firmware to be presented in the firmware specification document. Figure 11 ICARe Modes of Operation Confidential Page 18 12/29/2004

ICARe Project Functional Specification Mode Description Power Up The Power Up mode will be the initial state of the module. It will enter this state upon a power on or watchdog reset. This mode will initialize the MCU’s peripherals and then determine when the power levels are sufficient to progress to move onto the initialization mode. This state is exited when: • Shooter detected → Shooter Mode • Powered by Zeroer → Zeroer Mode • Power Levels good → Initialization Mode Initialization Once the module has verified that reliable supply power is present, the configuration data will be read from the nonvolatile memory and the module will initialize itself. This state is exited when one of the following conditions are met: • Invalid configuration → PowerUp Mode • Initialization successful → Normal Mode Normal This will be the main operating state for the module. In this state the module will update the LCD with the cumulative consumption value determine, implement the EEPROM data saving algorithm, and call functions to schedule and create RF messages for both Mobile and Fixed technologies. A pet of the watchdog is also performed in this normal mode loop. This mode is exited when: • Interruption from Timer Monitor → Timer Monitor Mode This mode is entered when: • Configuration is validated and loaded from Initialization Mode • Timer Monitor interrupt is complete Shooter Shooter mode is entered when it is determined that the shooter is connected to the ICARe board. This mode will be used to configure the Fixed configuration parameters as well as other test utilities to support the Fixed network. This state is exited when: • Shooter RxD low for > 1.5 msec forces watchdog reset → PowerUp Mode Zeroer Zeroer mode was designed to support RMR using the I2C protocol. After power is determined to come from the Zeroer device, the firmware gathers data and awaits either a read or reset energy command from the user. This state is exited when: • Zeroer voltage is removed and forces reset → Power Up mode Timer Monitor The mode is entered via a timed internal interrupt. This interrupt when entered will conduct all metrology signal processing and check signal levels for possible power fail mode entry. This mode also operates as the firmware’s freerun timer. This state is exited when: • Power Fail Detected → Power Fail Mode • Completion of tasks → Normal Mode Power Fail Power fail mode commences when the Timer Monitor mode detects a possible power fail by evaluating several signals on board the ICARe. This mode is exit when: • Power Fail Detection Confirmed → Resets • Power Restored → Timer Monitor Table 8 ICARe Firmware Modes Firmware Requirements The ICARe firmware will perform the following functions: Confidential Page 19 12/29/2004

ICARe Project Functional Specification • Count energy pulses from the metrology board • Monitor the sign line from the metrology board for energy flow and open bond detection • Maintain module CellNet and R300/R900 configuration data in EEPROM • Maintain module cumulative and interval counts in EEPROM • Monitor Power Fail and Power Recovery operations • Update LCD with cumulative consumption and perform temperature compensation • Load and validate static configuration and dynamic data • Schedule RF Transmissions Interface with Serial port • ESP serial interface capability • Use standard Shooter interface • Maintain MMLIB functionality as much as possible • Support the Zeroer and I2C functionality for the RMR version Interface with COSMOS CRF • SPI serial interface capability • Provide RF configuration data to CRF • Confirm RF messages sent Transmit PID 2 Message Packets to CellNet fixed network • Nominally transmitted every two native intervals (2.5 minute native interval) with a randomization period of one native interval. Packets could be transmitted from anywhere between 0 to 5 minutes minus one second. • Consumption data packets, both CUMINT2 and CUMINT3 • Administrative packets, ADMIN3 only • PowerFail and PowerUp packets • Magnet Packets Transmit R300/R900 Message Packets to mobile network • Consumption data packet • Nominally transmitted every 2 to 4 seconds randomized Utilize present CENTRON algorithms in all applications • Monitor the energy accumulation to detect the metrology bond wire failure • Monitor the LSYNC line from the metrology board to aid in power fail detection • Perform EEPROM backup every interval period and 91 Whr Confidential Page 20 12/29/2004

ICARe Project Functional Specification SYSTEM RF OPERATION RF Characteristics The COSMOS RFASIC is designed to provide both direct sequence spread spectrum (DSSS) and frequency hopping OOK transmissions in the 902 – 928 MHz ISM band. The characteristics of the transmitters for both the fixed (DSSS) and mobile transmitters are detailed in section 3 of the COSMOS RF ASIC Requirements Specification. Fixed Network Description The fixed network RF transmitter is designed for integration into the Cellnet by Atos Origin Fixed RF Network. The RF transmitter specifically works within the Cellnet RF local area network (LAN) in the unlicensed 900 MHz ISM band. The transmitter complies with title 47, part 15, section 247 of the FCC rules for radio frequency devices. Center Frequency Fixed Network Fixed Network 917.58 MHz Transmitter Bandwidth 902 MHz 928 MHz 918.78 MHz 916.38 MHz ISM Band Figure 12 Fixed Network Bandwidth Spreading Code The COSMOS RFASIC is capable of both On-Off Keying (OOK) and Cyclic Code Shift Keying (CCSK) for RF data transmission based on the requirements of the network. The 917.58 MHz carrier is Binary Phase Shift Keying (BPSK) modulated with a 63-bit pseudorandom code sequence. This COSMOS RFASIC design contains only one DSSS RF channel. For details about the OOK and CCSK messages refer to the ICARe RF Protocols Specification. Confidential Page 21 12/29/2004

ICARe Project Functional Specification 917.58 MHz 13 dBm Suppression 1.22 MHz 1.22 MHz 916.36 MHz 918.80 MHz Figure 13 Fixed Network DSSS Pattern Mobile Network Description The mobile network works within the 900 MHz ISM band using an OOK transmitter. The COSMOS RF is capable of providing 50 channels with 196.5 kHz channel spacing, 64 channels with 131.072 kHz channel spacing or 128 channels with 65.536 kHz channel spacing. Center Frequency Mobile Network 915 MHz 919.67 MHz 910.04 MHz 902 MHz 928 MHz 910 MHz 920 MHz R300/R900 Transmitter Band Mobile Receiver Band ISM Band Figure 14 Mobile Network Transmission Bandwidth R300 / R900 Transmissions The R300 and R900 use two different transmission methods that should be noted. The R900 transmissions are standard On-Off-Keying (OOK) while the R300 is a Manchester encoded signal. The R900 transmitter basically turns the amplifier on and off to represent a 1 and a 0 respectively for the OOK. The R300 Manchester encoded signal actually is a double chipset that has a 1 to 0 transition to represent a 1 and a 0 to 1 transition to represent a 0. Confidential Page 22 12/29/2004

ICARe Project Functional Specification Clock 1 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 OOK 10101001011010010110011010011001 Manchester E 6 5 A Figure 15 Mobile OOK versus Manchester Encoding Transmission Randomization The ICARe will have the ability to transmit multiple data protocols from the same meter. The data will be converted to the proper protocol and then transmitted on an interval period loaded during configuration. Fixed Network Randomization The randomization of the fixed network takes place over a 150 second native interval from the EOI which is the default setup. The normal operation for most deployed residential fixed network endpoints are two native intervals of data per transmission. That means that while 150 seconds of interval data is collected, transmissions occur every 300 seconds. The randomization values will be between minimum of 1 second and a maximum of 140 seconds to allow for an additional clearance time of the message transmission. Transmission Randomization 300 150 300 150 300 150 Figure 16 Fixed Network Interval Randomization Fixed Network Intervals The fixed network transmissions include cumulative and interval data. There are two formats for the messages that can be transmitted. The first format is a Cumulative 2 (CumInt2) message that has 18 bytes of interval data that is transmitted along with the total energy cumulative count. Since the normal setup for the residential transmitter is to transmit every other native interval each transmission will include 2 intervals (300 seconds) of data. For the residential meter the data is the total energy accumulated during the interval. Confidential Page 23 12/29/2004

ICARe Project Functional Specification 2.5 Minutes 45 Minutes 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Transmission 1 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Transmission 2 Transmission 3 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Transmission 4 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Transmission 5 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 Transmission 6 17 16 15 14 13 12 11 10 9 8 7 6 5 4 Transmission 7 17 16 15 14 13 12 11 10 9 8 7 6 Transmission 8 17 16 15 14 13 12 11 10 9 8 Transmission 9 17 16 15 14 13 12 11 10 Transmission 10 17 16 15 14 13 12 Figure 17 Cumulative 2 with 18 Intervals The second format is a Cumulative 3 (CumInt3) message that has 10 15-bit intervals of data that is transmitted along with the total energy cumulative count. This message operates in a similar fashion to the cumulative 2 message. Confidential Page 24 12/29/2004

ICARe Project Functional Specification 2.5 Minutes 25 Minutes Transmission 1 9 8 7 6 5 4 3 2 1 0 Transmission 2 9 8 7 6 5 4 3 2 1 0 Transmission 3 9 8 7 6 5 4 3 2 1 0 Transmission 4 9 8 7 6 5 4 3 2 1 0 Transmission 5 9 8 7 6 5 4 3 2 Transmission 6 9 8 7 6 5 4 Transmission 7 9 8 7 6 Figure 18 Cumulative 3 with 10 Intervals R300 / R900 Mobile Network Randomization The randomization of the R300 / R900 mobile network takes place over a 1 second interval. The normal operation for the mobile network is one transmission per second randomized. The mobile transmitter will transmit the cumulative data as it is updated as opposed to the native interval method of the fixed network. Transmission Randomization 2 3 4 5 6 1 Figure 19 Mobile Network Randomization Mobile Channel Selection Based on the equation given in the COSMOS RF specification version 2.4 the following table should give the correct N & M values to correspond with one of the allocated frequencies. Confidential Page 25 12/29/2004

ICARe Project Functional Specification Channel Channel Channel Channel Channel Channel Value Frequency No. Value Frequency No. Value Frequency No. 1615 910962087 1 1657 913714041 22 1699 916465994 43 1617 911093133 2 1659 913845086 23 1701 916597040 44 1619 911224178 3 1661 913976132 24 1703 916728085 45 1621 911355224 4 1663 914107177 25 1705 916859130 46 1623 911486269 5 1665 914238222 26 1707 916990176 47 1625 911617314 6 1667 914369268 27 1709 917121221 48 1627 911748360 7 1669 914500313 28 1711 917252267 49 1629 911879405 8 1671 914631359 29 1713 917383312 50 1631 912010451 9 1673 914762404 30 1715 917514357 51 1633 912141496 10 1675 914893449 31 1717 917645403 52 1635 912272541 11 1677 915024495 32 1719 917776448 53 1637 912403587 12 1679 915155540 33 1721 917907493 54 1639 912534632 13 1681 915286586 34 1723 918038539 55 1641 912665678 14 1683 915417631 35 1725 918169584 56 1643 912796723 15 1685 915548676 36 1727 918300630 57 1645 912927768 16 1687 915679722 37 1729 918431675 58 1647 913058814 17 1689 915810767 38 1731 918562720 59 1649 913189859 18 1691 915941813 39 1733 918693766 60 1651 913320905 19 1693 916072858 40 1735 918824811 61 1653 913451950 20 1695 916203903 41 1737 918955857 62 1655 913582995 21 1697 916334949 42 1739 919086902 63 1741 919217947 64 Table 9 Mobile 64 Channel Selections Channel Channel Channel Channel Channel Channel Value Frequency No. Value Frequency No. Value Frequency No. 1601 910044770 1 1652 913386427 18 1703 916728085 35 1604 910241338 2 1655 913582995 19 1706 916924653 36 1607 910437906 3 1658 913779563 20 1709 917121221 37 1610 910634474 4 1661 913976132 21 1712 917317789 38 1613 910831042 5 1664 914172700 22 1715 917514357 39 1616 911027610 6 1667 914369268 23 1718 917710925 40 1619 911224178 7 1670 914565836 24 1721 917907493 41 1622 911420746 8 1673 914762404 25 1724 918104062 42 1625 911617314 9 1676 914958972 26 1727 918300630 43 1628 911813882 10 1679 915155540 27 1730 918497198 44 1631 912010451 11 1682 915352108 28 1733 918693766 45 1634 912207019 12 1685 915548676 29 1736 918890334 46 1637 912403587 13 1688 915745244 30 1739 919086902 47 1640 912600155 14 1691 915941813 31 1742 919283470 48 1643 912796723 15 1694 916138381 32 1745 919480038 49 1646 912993291 16 1697 916334949 33 1748 919676606 50 1649 913189859 17 1700 916531517 34 Table 10 Mobile 50 Channel Selections Confidential Page 26 12/29/2004

ICARe Project Functional Specification Rcvr Rcvr Chan Rcvr Rcvr Chan Rcvr Rcvr Chan Chan Frequency Chan Frequency Chan Frequency 102 910032474 76 913440346 50 916848218 101 910163546 75 913571418 49 916979290 100 910294618 74 913702490 48 917110362 99 910425690 73 913833562 47 917241434 98 910556762 72 913964634 46 917372506 97 910687834 71 914095706 45 917503578 96 910818906 70 914226778 44 917634650 95 910949978 69 914357850 43 917765722 94 911081050 68 914488922 42 917896794 93 911212122 67 914619994 41 918027866 92 911343194 66 914751066 40 918158938 91 911474266 65 914882138 39 918290010 90 911605338 64 915013210 38 918421082 89 911736410 63 915144282 37 918552154 88 911867482 62 915275354 36 918683226 87 911998554 61 915406426 35 918814298 86 912129626 60 915537498 34 918945370 85 912260698 59 915668570 33 919076442 84 912391770 58 915799642 32 919207514 83 912522842 57 915930714 31 919338586 82 912653914 56 916061786 30 919469658 81 912784986 55 916192858 29 919600730 80 912916058 54 916323930 28 919731802 79 913047130 53 916455002 27 919862874 78 913178202 52 916586074 26 919993946 77 913309274 51 916717146 25 920125018 Table 11 Receiver Channels Confidential Page 27 12/29/2004

ICARe Project Functional Specification SPECIFICATIONS & STANDARDS Specifications Electrical Voltage Ratings: 120V & 240V ± 20% • Frequency: 60 Hz ± 5% Operating Environment • Temperature: -40° C to +85° C • Humidity: 0 to 95% relative humidity, noncondensing • Accuracy: ± 0.5% • Transient/Surge Suppression: ANSI C37.90.1-1994 IEC 61000-4-4 ANSI C62.45-1992 • High Voltage Surge: ANSI C62.41 • Electrostatic Discharge (ESD): ANSI C12.1-2001, 10 pulses of 15kV direct contact to meter enclosure per IEC 61000- 4-2 • Radio Frequency Interference (RFI): EMI/RFI fields of between 15 V/m for all frequency ranges between 14 kHz and 10 GHz. Meter Base Requirements The ICARe will be required to work in CENTRON meter with the following form, class, and voltage ratings: Class Volts Form 20 120 3S 20 240 3S 20 240 4S 100 120 1S 200 120 12S 200 120 25S 200 240 2S 320 240 2S Table 12 Meter Specification Types External Standards ANSI Standards The system will be required to meet the following standards. • ANSI C12.1 - 2001 • ANSI C12.20 (Class 0.5) – 1998 as a minimum requirement since the present metrology/base unit was certified under this standard. If at all possible, the meter should strive to qualify under the newer ANSI C12.20 (Class 0.5) –2002 specification where possible. FCC Regulations These regulations will be required to be verified using the in-house RF test facility for verification and a Confidential Page 28 12/29/2004

ICARe Project Functional Specification FCC certified RF OATS test facility for certification. CFR Title 47,Part 15, Subpart C, Paragraph 247 Applicable section for 902-928 MHz include: Field strength of fundamental: 500 mV/m @ 3m Field strength of harmonics: 1.6 mV/m @ 3m “Frequency hopping systems shall have channel frequencies separated by a minimum of 25 KHz or 20 dB bandwidth of the hopping channel whichever is greater. Hopping channels are selected at the system hopping rate from a pseudorandomly ordered list of hopping frequencies. Each frequency must be used equally on the average by each transmitter.” “If the 20 dB bandwidth of the hopping channel is less that 250 KHz, the system shall use at least 50 hopping frequencies and the average time of occupancy on any frequency shall not be greater than 0.4 seconds within a 20 second period; if the 20 dB bandwidth is 250 KHz or greater, the system shall use at least 25 hopping frequencies and the average time of occupancy on any frequency shall not be greater that 0.4 seconds within a 10 second period. The maximum allowed 20 dB bandwidth of the hopping channel is 500 KHz.” “The maximum peak output power of the intentional radiator shall not exceed 1 watt for systems employing at least 50 hopping channels; and, 0.25 watts for systems employing less than 50 hopping channels.” “If transmitting antennas of directional gain greater that 6 dBi are used the peak output power from the intentional radiator shall be reduced below the stated values above as appropriate, by the amount in dB gain of the antenna exceeds 6 dBi.” CFR Title 47,Part 15, Subpart C, Paragraph 249 Applicable sections include: Field strength of fundamental: 50 mV/m @ 3m Field strength of harmonics: 500 uV/m @ 3m “Emissions radiated outside of the specified frequency bands, except for harmonics, shall be attenuated by at least 50 dB below the level of the fundamental or to the general radiated emission limits whichever is the lesser attenuation.” Internal Standards The following internal quality standards will apply to this project. • N-Q001 : Quality Manual • N-Q017 : Documentation & Control of Changes • N-Q034 : ECN • N-Q043 : Calibration, Traceability of Electronic Measuring Equipment • N-Q050 : ESD Control • N-Q057 : Identifying the Latest Revision of Engineering Drawings • N-Q071 : Initiating & Releasing New Engineering Drawings • N-Q075 : Control of Software • N-B010 : IPO Management Confidential Page 29 12/29/2004


Document Created: 2005-01-04 10:16:00
Document Modified: 2005-01-04 10:16:00
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