SPECIAL SPECIFICATION 6744 Spread Spectrum Radio

Transcription

1 2004 Specifications CSJ SPECIAL SPECIFICATION 6744 Spread Spectrum Radio 1. Description. Furnish and install spread spectrum radio system. 2. Materials. Supply complete manufacturer specifications for radio, antennas, cables, connectors, power supply, mounting hardware, and lightning surge protector, including the exact gain of the antenna. 3. Spread Spectrum Radio Spread spectrum radios supplied under this contract must meet FCC and IC rules for unlicensed radio operation in the MHz band. The radios must meet the following specific requirements. A. All radios must be capable of operating as a stand alone Multiple Address System (MAS), as a stand alone Point-to-Point link or as a Tail End or Last Mile link from an existing Multiple Address (MAS) radio system. B. The radio shall use the spread spectrum Frequency Hopping technique for data communications. Frequency hopping has the advantage of transmitting with a full one watt of power on a single frequency for maximum range. In addition, robust interference rejection must be insured by the use of traditional narrow band filtering techniques to reject noise and interference. Forward error correction, automatic retransmission and CRC/QRQ must be used to insure that a 10-6 Bit Error Rate is achieved at a signal strength of -110 dbm C. All radios must be manufactured in the United States of America and the radio manufacturer must be certified as an ISO 9001 approved facility. A certificate of ISO 9001 registration must be included with the bid documents. D. The radio must have FCC and Industry Canada certification under FCC rules Part and IC RSS-210. No license will be required to operate radios supplied under this contract. E. The radio must be UL listed for normal operation. As an option, the radio must be UL / FM recognized for Class I, Division 2, Groups A, B, C, D hazardous locations when installed in an approved enclosure. F. The radios must be capable of transmitting the users data at standard rates between 1200 and 115,200 bits per second. The radio must be capable of operation with RTS/CTS flow control and the data interface shall be RS-232 or RS-485 (User Selectable). G. Communications between the central master site and all remote sites must be direct and 100% transparent communications for all standard asynchronous protocols. The radio must transmit data in the same format as used by the data system, seamlessly and

2 without interruptions. Radio overhead or latency must average 6 to 10 ms but cannot exceed 30 ms for communications from master to remote or from remote to master. 1. It will not be acceptable to require the users protocol be modified in any way for compatibility with radio communications nor will it be acceptable to require a special protocol driver within the radio. 2. It will not be acceptable to packetize data in a manner that would result in data gaps or in parts of the message being sent in separate packets that could be received out of order by the receiving radio. 3. It will not be acceptable to require a front-end controller to convert protocols or reorder data packets. 4. It will not be acceptable to transmit data in a non-deterministic manner such that data would be received longer than 30 ms after transmission. H. The master and remote radio must be interchangeable such that all radios are identical. The user must be able to select master, remote or repeater operation by a software command. I. The radios must be designed to minimize interference from noise and other radios operating in this band. Transmit power must be adjustable from 0.1 watt to the FCC maximum of 1.0 watt. The radio must be capable of hopping over 128 separate frequencies from 902 to 928 MHz. To insure the ability to operate multiple radio systems in one area and to avoid possible interference that may be in this band, the 128 frequencies must be divided into 8 non-overlapping zones. The radio must be able to operate in all 8 zones, or any combination of 4 to 7 zones. Zone selection shall be initiated by a command from the master radio that is broadcast to all radios in the system. In addition, the radio must have a minimum of 65,000 separate system addresses. Assignment of a unique address (which sets the hop pattern) insures that multiple radio systems can operate in the same area with minimal interference. J. The radios must utilize CRC error checking and automatic retransmission in order to minimize the effects of in band interfering signals. K. The radio system must utilize Digital Signal Processing (DSP) to automatically optimize communication performance and eliminate the requirements for internal tuning adjustments. A radio which has internal adjustments will be considered noncompliant. L. Software / firmware configurable operating parameters must be available to insure maximum radio system performance and throughput is available for a wide variety of system conditions and configurations. As a minimum, the data rate must be adjustable from 1200 to 115,200 bps, It must also have two different hop times in order to optimize for best throughput or least delay. It must be possible to operate the system in a mode that buffers data or in a mode that transmits data as it is received by the radio. Buffering is used to eliminate gaps in messages for protocols, such as Modbus, that cannot tolerate gaps

3 M. All system configuration parameters must be capable of being set by the user via a terminal or PC connected directly to the radio. Parameters for remote radios must be selectable over the air from the master. It will not be acceptable to require an external interface box to adapt the hand held terminal or PC to the radio, nor will it be acceptable to have any internal adjustments or switch settings of any type. N. The radio must be capable of operation on DC voltages from 6 to 30 VDC. Battery back-up with charger must be available for radios with AC power supplies. The radio will have a redundant or warm standby configuration in a 2u high rack mount. O. The radio must include Sleep Mode as a standard feature for sites requiring low current drain, such as solar powered applications. Sleep mode must reduce power consumption to 8 ma while allowing the remote site to maintain synchronization with the master radio. Sleep Mode is turned on and off by toggling a pin in the RS-232 connector. The radio must become fully operational no longer than 28 ms after Wake Up is initiated. P. The radios must support automatic store and forward such that data can be transmitted through an unlimited number of repeaters. The repeaters must be able to also act as RTU radios. Q. Using Store and Forward techniques, the radios must be able to perform alternate routing in case of a repeater failure and implement both a Primary route scheme or a use any equally route scheme. 4. Radio System Diagnostics. The radio system shall provide integral diagnostic capability to allow the user to verify communications reliability between the master and remote radios. Diagnostic data must be continuously acquired by the master radio without interrupting the users data communications. In addition, diagnostic communication must be usable from any radio in the network, not just the master. A. A separate diagnostic port must be available to enable the remote RTU/PLC/Terminal to access all radio diagnostics directly from the radio and enable radio diagnostic data to be incorporated into the SCADA system data base. B. Radio performance (Zone Quality) statistics must be maintained by the master radio for each of the 8 frequency zones. This information must include a) the total number of data packets transmitted, b) the total number of packet received and c) the total number of packet with errors. C. Local diagnostic information must be available from each radio via external LED s and, including as a minimum: Diagnostic Error Codes Synthesizer out of lock Voltage regulator failure Radio not calibrated Improper microcontroller operation Data parity fault Diagnostic Values Received Signal Strength Supply Voltage Temperature (internal) Zone Signal Quality

4 Data framing error Voltage regulator out of tolerance DC input voltage out of tolerance Low Received Signal Strength alarm Internal temperature out of tolerance Radio address not programmed External LED Indicators Power ON Radio Fault Sleep Mode On Transmit Data Receive Data Radios Communications Synchronized D. Radio diagnostics must be an integral part of the radio and must operate with a standard IBM compatible. It will not be acceptable to require an external interface box to adapt terminal or PC to access radio diagnostics, nor will it be acceptable to require any internal adjustments or switch settings of any type. E. Radio diagnostics must include direct read signal strength measurements in dbm for path checking and antenna aiming. 5. Radio System Specifications. The radio system must meet the following specifications. If any specification is not met in its entirety, the supplier must clearly identify the specific area of non-conformance as an exception to the specification. A. General. Frequency range MHz, FCC Part 15 Spread Spectrum Band Frequency Stability ± % (1.5 PPM), 30 to +60 C ( 22 to 140 F) Frequency Hopping Range 128 channels / frequencies Hop Dwell Times 7 ms, 28 ms - user selected Frequency Zones 8 Zones Hop Pattern Defined by system address Unit Addresses 0-65,000 System Addresses 1-65,000 B. Data Characteristics. User Interface RS-232 and RS-485 Interface Connector DB-9 Female Data Latency 7 ms (typical) Byte Length 10/11 bits Data Interface baud Rate ,200 bps Data Rate over the RF channel 115 kbps Transparent Communications For asynchronous protocols with 10/11 bit bytes Modulation Type Binary CPFSK Output Impedance 50 ohms C. Transmitter. Power Output Duty Cycle Spurious Emissions.1 to 1.0 watt (+20 to +30 dbm), user settable Continuous 60 dbc

5 Harmonic Emissions Transmitter Keying VSWR Modulation Type Output Impedance 70 dbc Data activated Unlimited no damage Binary CPFSK 50 ohms D. Receiver. Type Bit Error Rate Intermodulation Desensitization Spurious RSSI Range Double conversion superheterodyne Less than 10 6 at 110 dbm 59 db minimum (EIA) 75 db 70 db minimum -40 dbm to -120 dbm E. Primary Power. Voltage TX Supply Current RX Supply Current Sleep Mode Current Fuse Reverse Polarity Protection 13.8 Vdc nominal (6 30 Vdc Operating Range) Vdc Vdc Vdc Internal Included F. Environmental. Humidity Temperature Range Size 1.25 x 3.5" x 5.25 Case Die-cast aluminum RF Connector TNC 95% at 40 C (104 F); non-condensing 40 to + 70 C ( 22 to 140 F) All responses to this specification must include a line-by-line table of conformance which clearly identifies all areas of non-conformance as an Exception to the specification. 6. Radio Antenna. Furnish radio antennas with the following minimum characteristics: REMOTE SITE MASTER SITE RANGE IMPEDANCE WIND RATING CONNECTORS Unidirectional (Yagi), Minimum 9 db gain (db reference to half wave dipole) Omni-directional, Minimum 6 db gain (db reference to half wave dipole) 15 Miles 50 Ohm 125 miles per hour Type N Female

6 7. Cable. Furnish heliax type (LDF5) for all cable runs. Install cable connectors in accordance with manufacturer's recommendations. Install cable as shown on the plans or as directed. Furnish a coaxial protector (PolyPhaser IS-50NX-C2, Andrew APG-BNFNF- 090, Huber Suhner , or equivalent). Mount coaxial protector adjacent to and bonded to the cabinet ground bus. All cables required to furnish a fully functional unit shall be subsidiary to the spread spectrum radio. 8. Testing, Training, and Warranty. Provide a factory certified representative for installation and testing of the equipment. Conduct a test site survey prior to the installation of the equipment. The Department reserves the right to conduct their own site survey as needed. When required, provide up to 2 days of training to personnel of the Department in the operation, setup and maintenance of the spread spectrum radio system. Provide instruction and materials for a maximum of 20 persons and at a location selected by the Department. Provide instruction personnel certified by the manufacturer. The User's Guide is not an adequate substitute for practical classroom training and formal certification. Provide equipment with no less than 95% of the manufacturer's standard warranty remaining when equipment invoices are submitted for payment. Any equipment with less than 95% of its warranty remaining will not be accepted. Provide updates of the spread spectrum radio software free of charge during the warranty period, including the update to NTCIP compliancy. 9. Measurement. This Item will be measured as each unit complete in place. 10. Payment. The work performed and materials furnished in accordance with this Item and measured as provided under Measurement will be paid for at the unit price bid for Spread Spectrum Radio, Antenna (Unidirectional), and Antenna (Omnidirectional). The price is full compensation for furnishing, assembling, and installing the spread spectrum radios, antennas, and the cable; for mounting attachments; for testing, labor, tools, equipment and incidentals