268575802-WARNING_SIREN_SPECS2.pdf

TECHNICAL SPECIFICATIONS

EMERGENCY OUTDOORS WARNING SYSTEM

SCOPE:

The purpose of these specifications is to outline the minimum acceptable specifications for an Electronic Siren Warning

System. Each bidder will provide a quote for 6 - 1600-watt oscillating electronic sirens, as described in the specifications listed below. The vendor’s bid shall include siren speaker, speaker cable, siren controllers, siren radio controls, antennas and antenna cables, encoder(s) (see below), lightning arrestors, batteries and installation of all equipment, in accordance with the installation specifications provided within this package.

1.0 GENERAL PUBLIC WARNING SYSTEM SPECIFICATIONS:

1.1 The Public Siren Warning System (herein shall be known as "The System") will be an electronic, high power siren system. The System will consist of 6 oscillating speaker systems that can provide siren warning throughout 360 degrees.

The System shall be a two-way radio-controlled system.

1.2 The estimated coverage for the siren shall be 6000 feet. Siren coverage must be estimated in accordance with

FEMA's Guideline for Outdoor Siren Warning System CPG 1-17, using the 10dB loss per distance doubled, sound attenuation formula.

1.3 Each bidder shall submit, along with their proposal, a list of equipment by model or brand name that is being bid.

1.4 All system components furnished for this project shall be new products currently listed in the vendor’s latest price sheet. All remote sirens, their controls, and encoders (see below) shall be current standard and advertised models.

1.5 Only bids for an electronic siren system will be accepted. Any bid that includes mechanical or electro-mechanical alternate for sirens will be deemed non-compliant and will be disqualified. The fact that a manufacturer chooses not to produce equipment to meet these specifications, providing the above criteria are met, will not be sufficient cause to adjudge these specifications as restrictive.

1.6 Any exceptions to these specifications must be clearly stated point-by-point on a separate attached form. Failure to provide this information will disqualify the bidder.

2.0 WARRANTY:

2.1 Warranty of the system shall be a minimum of 24 months for the siren's components mounted on the pole and encoding equipment (see below). The repair of the warranted parts shall be done at the manufacturer's factory. The cost of repairing these parts shall be included in the 24-month warranty. This excludes any labor cost for removing the defective part, from the siren. Other items submitted, but not manufactured by the bidder, such as computers and printers, wherein the warranty is not included in the factory's warranty must be indicated.

2.2 Additionally, an extended warranty agreement for a period of three years, after the 24 month warranty expires, must include a flat rate repair for all modules, manufactured by the siren manufacturer, located inside the siren's control cabinets and encoders (see below) provided by the bidder. The extended period does not apply to items not manufactured by the siren manufacturer. However, those items must be named. The extended period includes speaker drivers. The flat rate fee must be stated.

3.0 TECHNICAL SUPPORT:

3.1 The bidder must be an authorized sales and service center for the products being bid. The bidder must have FCC licensed technicians.

4.0 SHIPPING:

4.1 FOB will be manufacturer.

5.0 FREIGHT:

5.1 Vendor shall include all freight charges.

TECHNICAL SPECIFICATIONS

6.0 SPEAKER ARRAY:

6.1 The electrical path between the speaker system's power amplifiers and speaker drivers will be hardwired. The speaker shall consist of 4 speaker horns encased into a single projector. Each horn shall be comprised on only one (1)

400-watt speaker driver. The use of multiple independent stacked flared speaker horns or stacked speaker arrays that require more than one (1) speaker driver per speaker cell will not be accepted.

6.2 Each 400-watt speaker driver will be connected to one 400-watt power amplifier. Only one speaker driver per power amplifier will be accepted. Each power amplifier must be capable of producing 400 watts minimum output rating. A dedicated pair of wires shall wire each speaker driver to its own power amplifier. These wiring pairs shall be twisted, 14awg, coded red and black and each wire shall be numbered. The use of common grounds is prohibited. A minimum of 50' of speaker and control cable must be provided, for each siren.

6.3 The speaker drivers must be factory installed and pre-wired at the siren manufacturer’s facility prior to shipping, from the siren manufacturer.

7.0 CONTROL CABINET:

7.1 The siren case assembly shall be furnished in a natural finish aluminum material. The use of fiberglass or other non-metallic material will not be accepted. To minimize future maintenance, the speaker array and the siren’s electronic cabinet shall be manufactured from materials that have not been painted nor will ever need painting. The unpainted material must be capable of withstanding the environmental conditions for the area intended.

7.2 The siren case assembly shall be similar to a NEMA 4 type case assembly providing a raised rolled lip around the entrance of the compartment, removable hinged doors with gaskets secured by a retaining mechanism and a provision for a hasp type lock.

7.3 For ease of troubleshooting, all modules may be serviced or inspected by opening the service panel without disconnecting any modules from operation.

7.4 A lightning arrestor must be provided for each siren. Specifications of the arrestor are:

Maximum current: 60,000 Amps

Maximum energy: 2,000 Joules per line

Maximum number of surges: Unlimited

Response time one milliamp test 5 Nanoseconds

Reference Model, Delta Lightning Arrestor Model LA 302.

8.0 BATTERY CHARGER:

8.1 The County wishes to use Solar for charging the 2 batteries in each control cabinet. Therefore, bidding vendors should quote a 405 watt solar panel which should include a charge controller, cable, and mounting brackets. AC primary power is not acceptable.

9.0 BATTERY SUPPLY:

9.1 To minimize future maintenance expense, each siren will require no more than two (2) 60-amp/hour batteries to meet the operational guidelines of these specifications. Bidders must provide a copy of the siren’s technical manual which describes the number of batteries required, to provide a minimum of 15 minutes of run time, in the absence of electrical power. Failure to provide the proper information and/or failure to bid the proper number of batteries will deem the bid as “non-compliant” and the bidder will be disqualified.

10.0 MICROPROCESSOR CONTROLLER:

10.1 The microprocessor-based controller shall perform the following:

-Process remote and local station activation inputs

-Control event timing (timing 0-10 minutes)

-Initiate tone generator

-Perform system diagnostics

10.2 The microprocessor controller shall have the following local controls:

Siren tone activation to include: WAIL, ATTACK (Fast wail), ALERT (Steady), HI/LOW, AIR HORN, WHOOP and a 5 SECOND TEST -Silent test (SI TEST®) tone activation.

11.0 TONE GENERATOR:

11.1 The tone generator shall be an integral module within the microprocessor-based controller capable of generating the following warning signals:

TONE FREQUENCY SWEEP RATE

WAIL 400-640 Hz 3 sec/ 6 sec

ATTACK 400-559 Hz 1.8 sec/ 1.8 sec

ALERT 559 Hz Steady

HI/LOW 455 / 630 Hz .8 sec/ .8 sec

WHOOP 330-559 Hz 3.6 sec / 1.8 sec

AIR HORN 465 / 650 Modulated/ 1.6 sec

11.2 The tone generator will be capable of generating an inaudible tone of at least 20 kHz (SI TEST®) for the purpose of testing the speaker system and its respective speaker drivers without disturbing the public.

11.3 In addition to the six standard siren tones, each siren shall include six optional and distinctively different siren tones. These optional tones shall be an integral part of the siren. The County can choose which set of siren tones they wish to use by using specific hardware and software device that will allow each siren to be reconfigured, at the siren site.

The requirements of this hardware & software for reconfiguration are discussed in a future section of these specifications.

12.0 SYSTEM DIAGNOSTIC MONITORING FUNCTIONS: For future use once the encoder has been upgraded. This option should be included in the siren only for this bid.

12.1 The speaker system will produce an inaudible tone (SI TEST) for the purpose of testing the speaker system without disturbing the public. The inaudible test shall be capable of being activated by local or radio command.

12.2 The radio activated silent test will cause an exercise of the siren system components and a system diagnostic routine, permitting the verification of the following conditions:

-AC Power at operating levels

-DC Power at operation levels

-Partial speaker driver/amplifier operation

-Full speaker driver/amplifier operation

-Rotor operation

Additional diagnostic status must be made available via radio frequency and shall include

-Signal-to-noise

-Activation Counter

12.3 The inaudible test must be capable of diagnosing each speaker driver and power amplifier. The (SI TEST) silent test function must be capable of detecting the failure of a single speaker or power amplifier. Each siren will report the results of the silent test back to the central control station.

13.0 SPEAKER SIGNAL PERFORMANCE:

13.1 Speaker signal performance shall be based upon utilizing the Alert warning tone. The frequency of the Alert tone shall not to exceed 700 Hz.

14.0 DECODER:

14.1 The decoder shall be an integral system within the microprocessor controller.

14.2 The decoder shall respond to Two-Tone signal code. This is currently being used.

14.3 The system area code shall be a specific assignment and shall not be capable of accepting wild card digits, all call/group call digits or substitute numbers.

14.4 The four-digit station address code shall have the capability to accept wild card digits, all call/group call digits and substitute numbers for the purpose of group call and system wide activation.

14.5 The decoder shall reject any activation word sequence that does not meet the signaling criteria. Upon reception of an invalid sequence, the decoder will immediately reset. The minimum criteria for activation code rejection are:

-Incorrect area code

-Incorrect address code

-Incorrect group code

-Dialing rate invalid

-Word length invalid

15.0 RADIO CONTROLS

15.1 The sirens will be controlled via radio frequency. The radio control shall be capable of performing silent diagnostic testing on each siren. The siren shall report the status of the test and each activation back, via radio frequency, to the central control base station encoder. This should be capable for future use.

15.2 The radio receiver for the siren system shall be incorporated as a module, within the microprocessor controller.

The siren system shall be equipped with a two-to-four-watt state of the art transceiver. VHF Frequencies will be provided to successful vendor.

RF LINK FREQUENCIES: (Narrowband with Tone Coded Squelch)

Base station transmit frequency:_________________________Mhz

Base station transmit tone squelch:_________________________hz

Siren receive frequency:_______________________________Mhz

Siren receive tone squelch:_______________________________hz

Siren transmit frequency:_______________________________Mhz

Siren transmit tone squelch:_______________________________hz

15.3 The radio antenna shall be a 3dB omni-directional antenna. Also, a minimum of 35' of antenna cable shall be provided.

15.4 The County will ensure that a proper radio propagation exists at each siren site.

16.0 ENCODER:

Each bidder must plan on using the County’s existing Zetron Model 5 encoder. This is a two-tone encoder and is how the new sirens will be activated. It is the vendor’s responsibility to know what tones are used in activations.

17.0 DIAGNOSTIC & TESTING TOOLS

17.1 The County requires software and hardware

that will allow the vendor’s maintenance personnel to reconfigure the siren’s functions, as well as provide in-depth diagnostic information.

The vendor must be an authorized sales and service provider for the equipment you will be bidding.

The reconfiguration and diagnostic software must be loaded on a laptop computer.

The connection between the handheld or laptop computer and the siren will be via

RS-232 cable. Therefore, changes made at a specific siren site cannot have the ability to interfere or affect any other siren. This device shall be capable of changing the length of the siren tones from 1 to 10 minutes, changing the siren’s address code and other default settings. In addition to reconfiguration of default settings, this same device shall be able to retrieve the following diagnostic information:

A. Retrieve activation counter information.

B. Loss of AC counter information.

C. Marginal Radio Reception counter and DTMF transmit & received echo.

D. Low battery shut down counter information.

E. Minimum/Maximum recorded battery voltage information.

F. Individual amplifier/speaker driver status.

18.0 TRAINING:

18.1 Each bidder must provide the cost of on-site operator training and factory service training.

18.2 A minimum of one session must be provided to accommodate the personnel. The operator training shall include the activation encoder operations.

19.0 INSTALLATION:

19.1 The siren system shall be mounted on a 55’ or 60’ Class I wood utility pole. The bidder will be responsible for providing the required pole, setting the pole, mounting all siren components on the pole.

19.2 All wiring must be in rigid steel conduit.

19.3 In the event the County decides to provide the required pole, the bidder will also provide a deduction for the pole.

If the County provides the pole, the bidder will still be responsible for setting the pole and performing all installation duties.

19.4 The bidder must use the current Zetron activation encoder. The programming must be performed by the bidder and the technician programming the activation encoder must be an FCC licensed technician.

OPTIONS:

20.0 Solar Option:

20.1 The bidder shall provide the cost of solar power panel. The solar option must include one 405-watt solar panel, Charge Controller, mounting bracket and wiring. AC connections will not be allowed for the new siren sites.

21.0 UNACCEPTABLE EXCEPTIONS:

21.1 100-watt compression drivers will not be accepted as an approved equal.

21.2 Mechanical or Electro-Mechanical sirens will not be accepted as an approved equal.

21.3 Painted steel cabinets to house the electronics will not be accepted as an approved equal.

21.4 Siren head assemblies fabricated from any material other than corrosive resistant composition material will not be accepted as an approved equal.

21.5 Any primary AC power source.

21.6 Any encoding system other than Two-Tone will not be accepted as an approved equal.

21.7 Each speaker driver will have its own power amplifier. There must be an independent amplifier for each siren driver. Other than a 1:1 ratio will not be accepted as an approved equal.

21.8 All major components must be manufactured in the USA. A Certificate of Conformance may be necessary and provided. Any siren manufacturer providing major components in the manufacture of their sirens not made in the USA will not be accepted as an approved equal.

22.0. State of Mississippi Contractors license

22.1 Vendors bidding on this project must have a current Mississippi Contractors License as well as any subcontractors being used.

22.2 Vendors must include, with their bid package, a current copy of their State of Mississippi Contractors License as well as any subcontractors that will be used. Failure to provide this will result in vendor’s bid being rejected.

22.3. The contractors license number and expiration date must be clearly marked on the outside of the bid package.

Failure to provide this information will result in disqualification and your bid will be returned unopened.