NVC-BSR-0002Whisper Remote Metering System

l Page 1 Memo Confidential To:Chris Byleckie, EC Labs From:Charles Bolton CC:to files Date:03/03/99 Re:Description Whisper Base Station Products Submitted to FCC for approval. The Base Station products submitted for FCC approval consist of the following devices: Base Station Master, Base Station Repeaters, Backup Battery Enclosures used by Base Stations and the Base Station Concentrator. The FCC has previously granted certification for the Base Station Repeater which uses the same radio as all the above devices under FCC ID NVC BSR-0001. This FCC filing is to obtain FCC certification of modifications to the radio approved under FCC ID NVC BSR-0001 as well as extend the certification to new base station models. The modifications include: n Re-design of the radio from a two board package to a design using a single board. n Re-designed power supply. n Addition of an Ampro PC 104 CPU/Processor Board for select base station models( Base Station master and Base Station Concentrator) n Addition of an Aprotek PC-104 Modem (FCC G4LUSA-73282-DT-E) for select base station models. ( Base Station master and Base Station Concentrator) n Increase of RF output power from 0.891 watts to 1.0 watts l Page 2 Overview Base Station Master-Base Station Repeater System: Two types of base stations are used in this deployment. A Base Station Master (BSM) supports up to 30 Base Station Repeaters (BSR) with each BSR supporting up to 540 metering endpoint radios (Remote Meter Interfaces (RMI)) (This application only includes the Base Station products. The RMI devices were previously reviewed and approved by the FCC.) 1. Base Station Master (BSM): • One 6 dB, 23 inch, double coil antenna mounted on N Type female bulkhead connector. • Base Station Case drilled for Power, battery, antenna and phone modem connector cable thru holes. • Ampro or WinSystems PC 104 CPU/Processor Board. • Aprotek PC-104 Modem (FCC G4LUSA-73282-DT-E) • Updated Whisper Power Supply. • Whisper Radio (FCC NVC-BSR-0001) 2. Base Station Repeater(BSR): • One 6 dB, 23 inch, double coil Vertical antenna mounted on N Connector. This Antenna is used for communications to the BSM as well as communication to Remote Meter Interfaces over the Whisper Spread Spectrum, Frequency Hopping RF protocol. • Base Station Case drilled for Power, battery, and one antenna connector/cable thru holes. • Updated Whisper Power Supply. • Whisper Radio (FCC NVC-BSR-0001) 3. System Operation: The Base Station Repeaters are deployed to provide two way, spread spectrum frequency hopping communications between 1 to 540 metering endpoints (gas, electric or water subscriber meters). Outbound RF communications between the BSR and the RMIs are for programming and data interrogations. Inbound communications from RMIs to the BSR include meter reading reports and responses to BSR data interrogations. BSR to RMI communications are supported by a Whisper RF Protocol that uses 128 Spread Spectrum, Frequency Hopping channels in the 903.42 to 926.28 Megahertz range governed by FCC Part 15 regulations. The transmitter is limited to +20 dB output. The Base Station Master is connected to a WAN interface (POTS modem or other Wide Area Network Node) and communicates inbound and outbound with the BSR. Typically, the BSM is connected to a central utility l Page 3 computer used for collecting and analyzing metering data for billing and research/planning purposes. Outbound RF communications from the BSM to the BSR are for programming, scheduling and configuration. Inbound communications from the BSR to the BSM consist of the collection of RMI meter readings and responses to data interrogations. The BSM to BSR communications are supported by a Whisper protocol that uses162 Spread Spectrum, Frequency Hopping channels in the 902.08 to 927.84 Megahertz range and is governed by FCC Part 15. Maximum transmit power is + 30 dB. BSCBSMBSR CPU Board/ProcessorCPU Board/ProcessorNone Standard Power Supply Updated Design Standard Power Supply Updated Design Standard Power Supply Updated Design Whisper Transceiver FCC:NVC- BSR-0001 Whisper Transceiver FCC:NVC- BSR-0001 Whisper Transceiver FCC:NVC- BSR-0001 Modem (FCC G4LUSA73282- DT-E) Modem (FCC G4LUSA73282- DT-E) None One 6dB 23 inch Whip w/2 CoilsOne 6dB 23 inch Whip w/2 CoilsOne 6dB 23 inch Whip w/2 Coils Standard Whisper CaseStandard Whisper CaseStandard Whisper Case Overview Base Station Concentrator System: The Base Station Concentrator (BSC) is used in stand alone deployments in which a Base Station Concentrator supports up to 600 metering endpoint radios (Remote Meter Interfaces (RMI)). The BSC performs the functions of both a BSM and BSR in a single device. 1. Base Station Concentrator (BSC): • One 6 dB, 23 inch, double coil antenna mounted on N Connector. • Base Station Case drilled for Power, battery, antenna and phone modem connector cable thru holes. • Ampro or WinSystems PC 104 CPU/Processor Board. • Aprotek PC-104 Modem (FCC G4LUSA-73282-DT-E) • Updated Whisper Power Supply. • Whisper Radio (FCC NVC-BSR-0001) • Updated Power Supply. l Page 4 2. Operation: The BSC is connected directly to a WAN and linked to a Utility computer for billing or research. The BSC supports two way communications between the BSC and the RMI units. ). Outbound communications between the BSC and the RMIs are for programming and data interrogations. Inbound communications from RMIs to the BSC include meter reading reports and responses to BSC data interrogations. Inbound and outbound RF communications between the BSC and the RMI devices use the128 channel Whisper RF protocol. The BSC communicates to Host/Controller computer using a direct serial connection or a POTS modem. The Base Station concentrator provides the same functionality of both a BSM and a BSR in a single package. The radio only operates in Whisper mode. Whisper Transceiver Specifications: 1. Frequency: Spread Spectrum Frequency Hopping BSR-BSM protocol Freq: 902.08MHz - 927.84MHz Channels: 162 Channels Chann…

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March 4, 1999 Federal Communications Commission Equipment Authorization Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Maximum Permissible Exposure calculations for FCC ID:NVC-BSR-0002 To whom it may concern, Whisper Communications is submitting a low power transmitter for the Whisper System RF Metering system. The unit uses a frequency hopping spread spectrum transmitter operating in the 902 - 928 MHz range. Assuming a worst case of no duty cycle. For an Isotropic radiator the surface area of a sphere can be used to determine the area over which the transmitter energy is radiated. Surface area of a sphere = 4*Π*radius 2 In the case where there is antenna gain, the worst case energy density is increased by the antenna gain. In this case, the exposure level for a controlled environment can be calculated as follows: MPE distance = (output power*duty cycle*10(antenna gain/10)/(4*Π*Exposure Limit (mW/cm 2 ) 1/2 For a 6.0 dBi Antenna NVC-BSR-0002 MPE distance= (1000 m W*1*3.98 / 4*3.14*5) 1/2 = 7.96 cm = 3.1 in If you have any questions please do not hesitate to call me. Sincerely, Chris Byleckie Technical Director

A903001.DOC1 15.247 Certification15.247 Certification FCC ID: NVC-BSR-0002FCC ID: NVC-BSR-0002 EMI TEST REPORTEMI TEST REPORT Base Station ConcentratorBase Station Concentrator Base Station MasterBase Station Master Base Station RepeaterBase Station Repeater Prepared forPrepared for WhisperWhisper 3200 Coronado Drive3200 Coronado Drive Santa Clara, CA 95054Santa Clara, CA 95054 Tel: (408)490-3800Tel: (408)490-3800 Fax: (408)490-3801Fax: (408)490-3801 Prepared byPrepared by Electronic Compliance Laboratories Inc.Electronic Compliance Laboratories Inc. 1249 Birchwood Dr.1249 Birchwood Dr. Sunnyvale, CA 94089Sunnyvale, CA 94089 Tel: (408) 747-1490Tel: (408) 747-1490 Fax: (408) 747-1495Fax: (408) 747-1495 Test Report Number: A903001Test Report Number: A903001 Date of Test: November 3, 1998Date of Test: November 3, 1998 If this Document is reproduced, it must be reproduced in it's entirety A903001.DOC2 Table of Contents 1.0 Test Facility...................................................................................................3 2.0 Test Equipment.............................................................................................3 3.0 EUT................................................................................................................4 4.0 Support Equipment......................................................................................5 5.0 Equipment Configuration.............................................................................5 6.0 Summary Of Tests........................................................................................6 7.0 Labeling Requirements..............................................................................10 APPENDIX A Spread Spectrum Data...............................................................12 APPENDIX B Restricted Band Data.................................................................14 APPENDIX C Conducted Emissions...............................................................16 APPENDIX D Radiated Emissions...................................................................21 APPENDIX E Antenna and Connector Drawings............................................23 APPENDIX F Set-up Photographs...................................................................27 A903001.DOC3 1.0TEST FACILITY Name: Electronic Compliance Laboratories Location:1249 Birchwood Dr. Sunnyvale, CA 94089 Site Filing:A site description is on file at the Federal Communications Commission P.O. Box 429 Columbia, MD 21045 Types of Sites:Open Field Radiated and Indoor Screen Room (Line Conducted). All sites are constructed and calibrated to meet ANSI C63.4-1994 requirements. Test facility is recognized by the National Voluntary Laboratory Accreditation Program for satisfactory compliance with criteria established in Title 15, Part 285 Code of Federal Regulations. NVLAP Code:20089 effective through: March 31, 1999 2.0TEST EQUIPMENT DescriptionManufacturerModelSN EMI ReceiverHP8546A3325A00137 Power MeterHP437B3125U13399 Power SensorHP84813318A16275 Spectrum AnalyzerHP8563E3137A01183 PreampHP8447F3113A05849 PreampHP8449B3008A00527 LISNEMANS-25/22532 Biconical AntennaEMEM 6912677 Log Periodic AntEMEM 6950858 Double Ridge HornEMEM 69616231 Filter BP 1.2-4 GHzFSYHM1160-11SS001 Filter BP 4-10 GHzFSYHM2950-15SS001 Filter BP10-18 GHzFSYHP8601-7SS001 A903001.DOC4 3.0EUT The Whisper System RF Metering System is defined as various gas and electric Remote Meter Interface (RMI) devices using spread spectrum, frequency hopping (SSFH) radio technology to communicate energy usage data to a Base Station Repeater (BSR) unit on a reporting schedule. The BSR communicates to a Base Station Master (BSM) over a separate SSFH RF link using MDCN protocol on a scheduled basis. Base Station Concentrators (BSC's) are stand alone RF data concentrators that function both as a BSM and a BSR. BSC's only use SSFH to communicate with and receive scheduled reports from RMI's. BSM's and BSR's are connected to a Host Control program using a land line or other WAN interface. All RF devices operate in the 902 to 928 MHz range. In addition, a back up battery box can be attached to a BSR, BSM, or BSC to provide electrical power to the device during power outage conditions. RMI's are integrated into or connected to a standard residential or Commercial and Industrial Electro-mechanical demand meter. RMI's are powered from the line for units integrated into an Electric Meter. Gas and Water Meter RMI's are battery powered. RMI's report to a BSR or BSC on a scheduled basis, transmissions in a single channel are less than 400 mS. The BSM Base Station Master (BSM) that polls 20 to 30 Base Station Repeaters (BSR's). A BSR can control and receive scheduled reports from 540 RMI's using a one hour reporting schedule. A BSR utilizes a schedule that assigns a six second slot to each RMI reporting to a BSM. The RMI utilizes the first two seconds of the time slot for scheduled reports. The remaining 4 second period is used for new acquisitions or re-acquisitions of RMI's. A BSR reports to a BSM every tenth reporting slot (60 seconds). A BSR to BSM reporting schedule is 2 seconds. A BSR supports 540 RMI reporting slots and 60 slots for reporting data to a BSM Base Station MasterM/N 510M2-0x-HTD Base Station RepeaterM/N 510R2-1x-WTH Base Station ConcentratorM/N 500c-10-WSR The unit tested was a: BSM containing the following: Hitest Radio – previously approved under FCC ID: NVC- BSR-0001 Aprotek PC-104 modem FCC ID – G4LUSA-73282-DT-E Ampro PC 104 CPU / Processor board Model Number510M2-0B-HTD / 510R2-1B-WTH Serial Number826204 A903001.DOC5 4.0SUPPORT EQUIPMENT Equipment Type:Battery Box Model Number:500-B-00-000 Serial Number:827409 Manufacturer:Whisper Equipment Type:Telephone Model Number:KX-T7020 Serial Number:3E IDO89719 Manufacturer:Panasonic 5.0EQUIPMENT CONFIGURATION All of the equipment and cables were placed in worst case positions to maximize emissions. Interconnecting cables wer…

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