Operational Description

FCC ID: NTAWB1

Operational Description

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FCCID_821582

Telematics Wireless Proprietary FCC ID:NTAWB1 Meter Booster Specification Rev V1 Operational_description_17650.doc May 30, 2007 Page 0 of 14

Telematics Wireless Proprietary FCC ID:NTAWB1 Table Of Content 1. INTRODUCTION .......................................................................................................................... 0 2. WATER METER BOOSTER DESCRIPTION........................................................................... 5 2.1. BLOCK DIAGRAM ...................................................................................................................... 5 3. ELECTRICAL PERFORMANCE ............................................................................................... 0 3.1. TRANSMIT PARAMETERS OF PATH #1 ........................................................................................ 0 3.1.1. Frequency Hopping Parameters........................................................................................ 0 3.2. TRANSMIT PARAMETERS OF PATH #2 ........................................................................................ 0 3.3. TRANSMIT PARAMETERS OF PATH #3 ....................................................................................... 0 3.4. RECEIVE PARAMETERS OF PATH #4......................................................................................... 12 3.5. RECEIVE PARAMETERS OF PATH #5......................................................................................... 13 3.6. ANTENNAS ................................................................................................................................ 0 3.7. POWER SOURCE ......................................................................................................................... 0 3.8. ENVIRONMENTAL CONDITIONS ................................................................................................. 0 Operational_description_17650.doc May 30, 2007 Page 0 of 14

Telematics Wireless Proprietary FCC ID:NTAWB1 1. Introduction The following document describes the technical specification of the Water Meter Booster Unit (called WMB) for the USA market. The WMB communicates by a RF channel with up to 2 meters and collects their data. The collected data is transmitted by the WMB (towards the a Fix Reader) by the RF channel using a 1 watt Spread Spectrum Frequency Hopping technique. All RF channels to/from the WMB operate at the 900MHz ISM band. The WMB communicates via the RF channel with the following units (see figure 1): ! Path #1 - Transmit (via an external antenna) the collected data towards the Fix Reader ! Path #2 - Transmit (via an internal antenna) the programming parameters and commands towards the Meters ! Path #3 - Transmit (via an external antenna) the response to the Programming Unit ! Path #4 - Receive (via an internal antenna) the response from the Meters ! Path #5 - Receive (via an external antenna) the programming parameters and commands from a Programming Unit . Operational_description_17650.doc May 30, 2007 Page 0 of 14

Telematics Wireless Proprietary FCC ID:NTAWB1 MMR / DMMR MMR (Concentrator) (Programmer) B 1 B.C 3 P 5 Water Meter Booster B.C P 4 2 Meter Meter P = Programming Channel B.C = Back Command Channel B = Beacon Channel Figure 1: WMB Communication Channels Operational_description_17650.doc May 30, 2007 Page 0 of 14

Telematics Wireless Proprietary FCC ID:NTAWB1 2. Water Meter Booster Description 2.1. Block Diagram A block diagram of the Meter Booster is described below. Reader and Hand Held Programmer External Pit Antenna Communication with Fixed WMB 1W Path #1 PA 26.6353MHz 32.768kHz T/R T/R ISM Micro RF Fil. Controller Transceiver T/R Path #3, #5 Internal Printed Antenna for Meter-Booster Communication EEPROM Path #2, #4 Figure 2: Water Meter Booster Block Diagram Operational_description_17650.doc May 30, 2007 Page 0 of 14

Telematics Wireless Proprietary FCC ID:NTAWB1 3. Electrical Performance 3.1. Transmit Parameters of Path #1 MMR / DMMR MMR (Concentrator) (Programmer) B 1 B.C 3 P 5 Water Meter Booster B.C P 4 2 Meter Meter Operational_description_17650.doc May 30, 2007 Page 0 of 14

Telematics Wireless Proprietary FCC ID:NTAWB1 Table 2 – Transmit Parameters of Path #1 Parameter Value Transmit frequency band 905.25 MHz - 924.75 MHz Radio type Spread Spectrum Frequency Hopping (54 hopping Frequencies) Modulation FSK Frequency deviation 30kHz - 45 kHz Data rate 30 kbps Data coding No data coding or Manchester Bandwidth (@-20dB) <250 kHz Frequency stability (including initial stability, <40 ppm temperature and aging) Peak output power (without Antenna) <30 dBm Harmonics TBD Occupancy time on any frequency ~8ms Transmission rate Programmable. Duty Cycle < 0.1% Transmit current < 850mA Operational_description_17650.doc May 30, 2007 Page 0 of 14

Telematics Wireless Proprietary FCC ID:NTAWB1 3.1.1. Frequency Hopping Parameters • The Water Meter Booster uses 54 hopping frequencies. • A Transmit cycle consists of 54 transmissions (frames) • Each frame is transmitted in different frequency. • A full transmit cycle is grater than 15 miniutes. • A Tx frame duration is less than 10ms. This is under the limit of 400ms in a 10 sec window. • The FH carrier hops on a predetermined, pseudo random pattern (see table below). • All channels are used equally • System's receiver has input bandwidth that matches the hopping channel bandwidth of the Meter Booster and captures the transmitter on any of 54 channels and performs equally on all channels. Frequency Frequency Frequency Frequency Frequency Frequency Index Index Index 1 913.700 19 923.775 37 905.250 2 908.175 20 920.200 38 918.900 3 915.325 21 918.575 39 922.475 4 906.550 22 909.150 40 910.450 5 923.125 23 922.150 41 924.425 6 920.525 24 906.875 42 921.175 7 916.900 25 924.100 43 908.500 8 912.075 26 907.850 44 915.650 9 918.250 27 912.400 45 910.775 10 915.000 28 919.550 46 917.600 11 919.225 29 905.900 47 913.375 12 921.825 30 917.275 48 919.875 13 911.425 31 907.200 49 911.750 14 924.750 32 914.025 50 920.850 15 921.500 33 923.450 51 907.525 16 911.100 34 909.800 52 914.675 17 906.225 35 914.350 53 912.725 18 910.125 36 908.825 54 922.800 Operational_description_17650.doc May 30, 2007 Page 0 of 14

Telematics Wireless Proprietary FCC ID:NTAWB1 Booster Frequency Hopping 926 924 922 920 918 Frequency 916 914 912 910 908 906 904 0 5 10 15 20 25 30 35 40 45 50 55 Frequency Index Operational_description_17650.doc May 30, 2007 Page 0 of 14

Telematics Wireless Proprietary FCC ID:NTAWB1 3.2. Transmit Parameters of Path #2 MMR / DMMR MMR (Concentrator) (Programmer) B 1 B.C 3 P 5 Water Meter Booster B.C P 4 2 Meter Meter Table – Transmit Parameters of Path #2 Parameter Value Transmit Frequency 905.25 -924.75 MHz Modulation Digital Modulation – Wide Band BFSK Frequency deviation ~190 kHz Data rate 40 kbps Data Coding Manchester Frequency stability (including initial stability, < 40 ppm temperature and aging) Bandwidth (@6dB) 500 kHz – 650 kHz Peak Output power (without Antenna) < 10 dBm Peak Output power spectral density (without Antenna) < 8dBm in any 3kHz Harmonics < - 54dBm Tx Pulse duration < 5ms Transmission rate Programmable. Duty Cycle < 0.1% Tx Current < 30mA Operational_description_17650.doc May 30, 2007 Page 0 of 14

Telematics Wireless Proprietary FCC ID:NTAWB1 3.3. Transmit Parameters of Path #3 MMR / DMMR MMR (Concentrator) (Programmer) B 1 B.C 3 P 5 Water Meter Booster B.C P 4 2 Meter Meter Table – Transmit Parameters of Path #3 Parameter Value Transmit Frequency 915 MHz Modulation Digital Modulation – Wide Band BFSK Frequency deviation ~170 kHz Data rate ~60 kbps Data Coding Manchester Frequency stability (including initial stability, < 40 ppm temperature and aging) Bandwidth (@6dB) 500 kHz – 650kHz Peak Output power (without Antenna) <10 dBm Peak Output power spectral density (without Antenna) < 8dBm in any 3kHz Harmonics < - 54dBm Tx Pulse duration < 5ms Tx Current < 30mA Operational_description_17650.doc May 30, 2007 Page 0 of 14

Telematics Wireless Proprietary FCC ID:NTAWB1 3.4. Receive Parameters of Path #4 MMR / DMMR MMR (Concentrator) (Programmer) B 1 B.C 3 P 5 Water Meter Booster B.C P 4 2 Meter Meter Table – Receive Parameters of Path #4 Parameter Value Receive Frequency 916.3 MHz Sensitivity (BER 1E-3) -90 dBm Modulation Digital Modulation – Wide Band BFSK Frequency deviation 90kHz - 170kHz Data rate ~60 kbps Data Coding Manchester Frequency stability (including initial <40 ppm stability, temperature and aging) Rx Current < 20mA Operational_description_17650.doc May 30, 2007 Page 0 of 14

Telematics Wireless Proprietary FCC ID:NTAWB1 3.5. Receive Parameters of Path #5 MMR / DMMR MMR (Concentrator) (Programmer) B 1 B.C 3 P 5 Water Meter Booster B.C P 4 2 Meter Meter Table – Receive Parameters of Path #5 Parameter Value Receive frequency 916.3 MHz Sensitivity (BER 1E-3) -90 dBm Modulation FSK Frequency deviation ~100 kHz Data rate ~20 kbps Data Coding Manchester Frequency stability (including initial stability, < 40 ppm temperature and aging) Rx Current < 20mA Operational_description_17650.doc May 30, 2007 Page 0 of 14

Telematics Wireless Proprietary FCC ID:NTAWB1 3.6. Antennas The Water Meter Booster has 2 Antennas: ! Internal Antenna - printed Antenna on the PCB. The max antenna gain is 4dBi ! External Antenna - soldered to the Booster printed circuit. The max antenna gain is 4dBi. 3.7. Power Source The Water Meter Booster is operated by 2 lithium batteries • Battery rated voltage 3.6V. • Operating voltage: 2.7-3.6V 3.8. Environmental Conditions Operating Temperature: -40° C to + 85° C Storage Temperature: -40° C to +85° C Humidity: Up to 95% Operational_description_17650.doc May 30, 2007 Page 0 of 14


Document Created: 2007-07-05 13:37:09
Document Modified: 2007-07-05 13:37:09
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