09 Attachment 01 SOW.pdf

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STATEMENT OF WORK

FOR

The Design of a Form Fit Functional Replacement ARSR4 RF Transfer Switch

P/N: 159C264H01, NSN 5985-01-434-2422

1.0 Overview

This Statement of Work (SOW) is issued by the Federal Aviation Administration (FAA), Radar Product Division, AJW-L, for the design, development, fabrication, and testing of a form fit and functional (F3) replacement ARSR4 RF Transfer Switch in according to the specifications listed below in Exhibit 8.1. Due to obsolescence and repair capability issues the new design must have the same mechanical dimensions and electrical performance or better using today’s generation components.

1.1 Contracting Officer’s Representative (COR)

The Contractor Officer’s Representative (COR) is formally designated with this responsibility by the Contracting Officer to provide direction and Government oversight to the Contractor on matters related to this contract.

2.0 Scope

The contractor shall furnish all labor, plant facilities, parts, supplies, materials, fixtures, equipment, tools, test equipment, technical data/expertise, and other facilities necessary to accomplish the design/redesign of a F3 replacement RF Transfer Switch.in accordance with FAA’s manufacturing and test specifications, FAA Specifications (listed in Exhibit 8.1) and all other terms, conditions and provisions contained herein.

This SOW will cover all R&D cost and labor necessary to furnish a minimum of two (2) first article unit and fourteen (14) production units. It is anticipated that a Firm Fixed Price Purchase Order will be utilized for award for this effort under service order agreement AJW-20-001-25836.

3.0 QUALITY CONTROL

The contractor shall establish and maintain a Quality Control Program in accordance with the requirements of ISO-9001:2008.A compliant Quality Management System is required. An auditable system containing all elements of the ANSI/ASQ/ISO Q9001-2008 standard must exist.

Equipment will be inspected in accordance with conformance to Technical Specifications and Packaging Specifications as stated in the contract. The equipment will be accepted/rejected at destination by the FAA. Certificates of Conformance shall be supplied where applicable. The Contractor may find information at www.asq.com.

The Government and the contractor agree that equipment used to design the Transfer Switch are standard manufactured items and for that reason it may not be necessary to require Government inspection and examination of all work in progress at any time or place during normal working hours. However, in the event an abnormal failure rate (to be determined by a Systems Engineer) is experienced, both parties agree that an in-plant quality control review shall be provided. Accordingly, the Government reserves the right to assign an in-plant Quality and Reliability Officer (QRO) to this contract if it is determined by the Contracting Officer to be in the best interest of the government.

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4.0 Requirements

The Contractor must design the transfer switch to a normally operating, serviceable condition, including all of the following:

A. Unit shall meet performance specifications listed in exhibit 8.1.

B. The unit shall meet workmanship requirements.

C. Record test data, including any tuning data, for each unit and provide with each shipped unit.

Sample datasheet will be submitted to FAA, and datasheet will be subject to approval by the

FAA.

D. All units shall marked with the serial number (S/N) and part number (P/N) being separate identification on separate lines so there is no confusion in receiving as to what is the S/N and P/N.

The following format shall be used when marking the label:

NSN: 5985-01-434-2422

P/N: 159C264H01 or vendor P/N S/N: 1000, 1001, 1xxx Rev: A

4.1 Deliverables

A. Deliver in a normally operating serviceable condition. It shall be delivered to operating stock at the FAA Logistics Center.

B. One (1) copy of the datasheet must accompany each unit.

C. The contractor will provide a block diagram of all parts and associated part numbers along with the vendor that supplies the material with the exception of internal components that are proprietary to the supplying vendors.

D. Shipping will be standard vendor shipping and billing practices using FAA standards.

4.2 Place of Performance

The Contractor must perform the work of the contract on the Contractor’s premises.

4.3 Inspection and Acceptance

Final inspection, test, and acceptance will be accomplished by the FAALC and AJW.

5.0 Quality Assurance (QA) Plan and Report Frequency

The Government reserves the right to perform technical inspections/tests on the contract deliverables referenced in Paragraph 4.1.A. The results of these technical inspections/tests will be documented and reported in “deliverable electronic format” to the COR and Contracting Officer upon an inspection/test completion basis. At an interval determined by the Government, these reports will be reviewed with the Contractor as a method to survey the quality of the deliverables and services according to the following plan.

5.1 QA Plan Objective and Surveillance Process

The purpose of this plan is to provide a quality surveillance plan for this repair/modification/up-rev services contract. This plan also provides a basis for the Engineers, COR and Contracting Officer to evaluate the quality of the Contractor’s performance. The oversight provided for in this contract and in this plan would help to ensure that the deliverables reach and maintain the

3 | P a g e required level of acceptance throughout the contract’s period of performance. Further, this plan provides the Engineer, COR and Contracting Officer with a proactive way to avoid unacceptable or deficient deliverables or performance, and provides verifiable input for the required Past Performance Information Assessments on the following performance criteria.

5.2 Performance Standards and Quality Level

Due to the important nature and criticality of the deliverables in achieving the highest quality level of FAA Logistics support provided to the FAA radar facilities, the Engineer, COR and Contracting Officer will judge the report, provided on each inspected/tested deliverable, based upon PASS/FAIL criteria only. A deliverable will be deemed to FAIL where any number less than 100% of all inspection/test parameters do not meet the acceptance criteria. As a cost saving initiative and enhance serviceable stock readiness capability, the Government reserves the right to correct any reported deficiency on a deliverable in lieu of a warranty return to the Contractor.

5.3 Performance Evaluation Process

The FAA has adopted the Contractor Performance Assessment Reporting System (CPARS) to electronically capture assessment data and manage the evaluation process. For agencies other than the FAA, contracts typically must meet a dollar value threshold; however, the FAA allows CPARS to be used at the Contracting Officer’s discretion with this contract. CPARS is used to assesses a contractor’s performance and provide a record, both positive and negative, on a given contract during a specific period of time. The CPARS process is designed with a series of checks and balances to facilitate the objective and consistent evaluation of contractor performance. Both government and contractor program management perspectives are captured on the CPAR form and together make a complete CPAR. Once the Assessing Official completes the proposed assessment for the period of performance, the CPARS is released to the appropriate Government Contractor’s Representative for their review and comments. User ID and Password will be provided to the designated Government Contractor Representative upon issuance of a delivery order. The contractor has 30 days after the Government's evaluation is completed to comment on the evaluation. The Government Contractor Representative must either concur or non-concur to each CPAR. If the contractor concurs with the proposed assessment and the Reviewing Official does not wish to see the CPAR, the Assessing Official may close out the CPAR. Otherwise, they must forward the CPAR to the Reviewing Official for them to review, enter comments if appropriate, and close out. The Reviewing Official may at their option direct the Assessing Official to forward every CPAR to them for review.

6.0 POINTS OF CONTACT

The contractor will identify specific Contractor personnel by name and telephone number who can be contacted regarding design requirements during both normal and other than normal duty hours.

The contractor will provide this information within 14 calendar days after date of contract award.

FAALC Points of Contact:

Contracting Officer's Representative:

Kimberly Waltman, Inventory Management Specialist Material Management Branch, AJW-L950 Ph: 405-954-5579 Em: kimberly.a.waltman@faa.gov mailto:kimberly.a.waltman@faa.gov

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Technical Representative:

Sholin Wright, Electronic Engineer NAS Defense Program, AJW-142 Ph: 405-954-8593 Em: sholin.wright@faa.gov

Ronald Breaux, Electronics Engineer Radar Product Division, Enroute, AMJ-L910 Ph: 405-954-3395 Em: ronald.breaux@faa.gov

7.0 SHIPPING

The Contractor will provide information concerning shipping points (i.e. addresses for shipping via UPS/other freight lines and addresses for shipping via parcel post or air mail) on each delivery order.

Upon completion of the manufacturing process, the items will be shipped to the FAALC at the following address:

697349 FAA Aeronautical Center M-F: Operating Stock 6500 S MacArthur Blvd Oklahoma City, OK 73169-6901 Packaging, Handling, Storage, and Transportation (PHS&T)

All items, unless otherwise specified, shall be individually packaged in accordance with American Society for Testing and Materials (ASTM) D 3951 (Packaging). "Standard Practices for Commercial Packaging" are encouraged (unless it is shown that commercial packaging practices cannot provide adequate protection and preservation). MIL,-STD-2073-1 is applied only when commercial packaging cannot meet known distribution and environmental requirements. Performance testing of packaging will be in accordance with ASTM D-4169 assurance level II distribution cycle 18.

Electrostatic or electromagnetic sensitive items shall be initially wrapped in Electrostatic Sensitive Discharge (ESD) shielding material conforming to MIL-STD-2073-1, Code GX, Preserve by Method 41.

ESD Intermediate and exterior containers shall be marked with the yellow and black ESD label IAW MIL-STD2073-129, "Marking for Shipment and Storage.

mailto:sholin.wright@faa.gov mailto:ronald.breaux@faa.gov

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8.0 Exhibit

8.1 Exhibit 1

RF Transfer Switch Technical Specification Requirements

TABLE OF CONTENTS

1.1 BACKGROUND

1.1.1 OPERATING ENVIRONMENT

1.2 SCOPE

2.0 REFERENCES

2.1 FAA SPECIFICATIONS

2.2 FEDERAL/FAA STANDARDS

2.3 MILITARY STANDARDS

2.4 OTHER DOCUMENTS

3.0 REQUIRMENTS

3.1 ELECTRICAL REQUIREMENTS

3.1.1 UNIT UNDER TEST PREPARATION

3.1.1.1 UNIT UNDER TEST THERMAL STRESS

3.1.1.2 UNIT UNDER TEST MECHANICAL STRESS

3.1.2 FREQUENCY OF OPERATION

3.1.3 HIGH POWER HANDLING

3.1.4 CHANNEL INPUT/OUTPUT CONNECTION

3.1.5 INSERTION LOSS BEAM/WX CHANNELS

3.1.6 INSERTION LOSS REF CHANNEL

3.1.7 ABSOLUTE INSERTION LOSS DEVIATION BEAM/WX CHANNELS

3.1.8 ABSOLUTE INSERTION LOSS DEVIATION REF CHANNEL

3.1.9 PHASE MATCH FOR BEAM/WX CHANNELS

3.1.10 REFERENCE PHASE FOR PHASE MATCH

3.1.11 MAXIMUM ABSOLUTE PHASE DEVIATION

3.1.12 VOLTAGE STANDING WAVE RATIO (VSWR)

3.1.13 INPUT POWER REQUIREMENTS

3.1.13.1 CURRENT DRAIN

3.1.13.2 INPUT POWER QUALITY

3.1.14 COMPRESSION POINT

3.1.15 POWER AND CONTROL INTERFACE

3.1.16 SWITCHING TIME

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3.1.17 PORT ISOLATION

3.2 MECHANICAL REQUIREMENTS

3.2.1 PHYSICAL SIZE AND MOUNTING

3.2.2 WEIGHT

3.2.3 CONSTRUCTION/SEALING

3.2.4 EXTERIOR SURFACES

3.2.5 SALT FOG

3.2.6 INTERNAL DESICCANT

3.2.7 INTERNAL WIRING

3.2.8 INTERNAL WIRE AND CABLE MARKING

3.2.9 SUBASSEMBLY LABELING

3.2.10 ASSEMBLY MARKING

3.2.11 CONNECTORS

3.2.12 FASTENERS

3.3 RELIABILITY AND MAINTAINABILITY

3.3.1 RELIABILITY

3.3.2 ELECTROMAGNETIC SUSCEPTIBILITY AND INTERFERENCE

3.3.3 OPERATING ENVIRONMENT

3.3.4 NON-OPERATING CONDITIONS/PACKAGING

3.3.5 VIBRATION ENVIRONMENT

3.3.6 SHOCK ENVIRONMENT

3.3.7 REPAIR CAPABILITIES

3.4 ADDITIONAL REQUIREMENTS

3.4.1 TEST DOCUMENTATION

3.4.2 FIRST ARTICLE TESTING

3.4.2.1 FIRST ARTICLE QUALIFICATION TESTING

3.4.2.2 REPAIR INSTRUCTIONS

3.4.2.2.1 REPAIR INSTRUCTION APPROVAL

ACRONYMS

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LIST OF FIGURES

Figure 1. ARSR-4 RF Transfer Switch, physical part, top view Figure 2. ARSR-4 RF Transfer Switch Equivalent Diagram Figure 3: Typical ARSR-4 +20 VDC power supply spikes (AC coupled)

LIST OF TABLES

none

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1.0 INTRODUCTION: This statement of work (SOW) is for the technical requirements for the fabrication, testing, and delivery for a new RF Transfer Switch for the Air Route Surveillance Radar, model 4 (ARSR-4). The new RF Transfer Switch assembly is to replace a legacy unit in form, fit, and function (F3) that is obsolete and difficult to repair. An example of the legacy RF Transfer Switch is shown in Figure 1. An equivalent RF diagram is shown in Figure 2.

1.1 Background: The ARSR-4 is a 3-D, long range, L band surveillance radar that provides search height and detection of small targets from 5.0 to 250 nmi. The radar utilizes a phased array feed system and a reflector antenna that are housed in a radome. The coverage volume is divided into nine receive beams with an optional lookdown beam. In addition, the ARSR-4 has a reference channel for jam strobe processing and a weather channel for weather processing. The RF Transfer Switch is designed to multiplex these twelve inputs on to seven outputs depending on an input command. This command determines either the “live” receiver configuration of a “test” configuration that is used for system testing. The command sent to the RF transfer switch changes at approximately millisecond intervals.

1.1.1 Operating Environment: The RF Transfer Switch is protected from direct sunlight and weather exposure by a radome, but it is otherwise subject to an outdoor environment. The assemblies must maintain their phase and amplitude matching over the entire temperature range. In addition, the RF Transfer Switch is subject to transmit pulses from the primary radar continuously while in operation.

1.2 Scope: This specification gives the requirements for a solid-state RF Transfer Switch, including technical requirements, testing requirements, and documentation requirements. The Contractor shall provide for the assembly, test, and documentation of the RF Transfer Switch in accordance with the technical specifications listed below.

2.0 REFERENCES:

2.1 FAA Specifications:

none

2.2 Federal/FAA Standards:

FED-STD-595 Colors Used in Government Procurement

2.3 Military Standards:

MIL-HDBK-217F CHG 2 Reliability Prediction of Electronic Equipment MIL-STD-721C Definition of Terms for Reliability and

Maintainability MIL-STD-810G, CHG 1 Environmental Engineering Considerations and

Laboratory Tests

2.4 Other Documents:

Drawing 159C264 Switch Network, Transfer, Radio Frequency (Exhibit 2)

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159C264_SWITCH_MA

TRIX.PDF

ARSR-4 transfer switch connection matrix (Exhibit 3)

3.0 REQUIRMENTS:

3.1 Electrical Requirements:

3.1.1 Unit Under Test Preparation: The unit under test for the electrical specifications shall be prepared before testing in the following manner:

3.1.1.1 Unit Under Test Thermal Stress: All units shall be thermally cycled from -

50 to +50 degrees C a minimum of 3 cycles and until the phase and gain values have stabilized. Thermal stressing can take place prior to final lidding.

3.1.1.2 Unit Under Test Mechanical Stress: All units shall be mechanically vibrated in prior to testing. The frequency spectrum of 20 to 2000 Hz with a root mean square (RMS) G loading of at least 1.5 G for at least 1 hour per axis. Mechanical stressing can take place prior to final lidding.

3.1.2 Frequency of Operation: Unless otherwise specified, the unit shall be capable of operation within specified limits over the frequency range of 1215 to 1400 MHz.

3.1.3 High Power Handling: The RF Transfer Switch assembly shall provide protection against +25 dBm of pulsed RF power between 1215 MHz and 1400 MHz. The pulse width for the RF power is 150 usec and the duty cycle is 4.32 percent.

3.1.4 Channel Input/Output Connection: The switch shall conform to the switching matrix spelled out in the Exihibit 3, 159C264_SWITCH_MATRIX.PDF, for each value of control code.

3.1.5 Insertion Loss Beam/WX Channels: Channels J1 through J10 and J12 to any attached output channel shall have a loss between 2.9 and 3.3 dB.

3.1.6 Insertion Loss REF Channel: Channel J11 (REF) shall have an absolute loss of between 5.4 and 6.0 dB to any connected output.

3.1.7 Absolute Insertion Loss Deviation Beam/WX Channels: The minimum and maximum channel losses shall be recorded for the 1215 – 1400 MHz band for all J1 through J10 and J12 channels. The maximum insertion loss deviation between the highest insertion loss and lowest insertion loss shall be 0.3 dB.

3.1.8 Absolute Insertion Loss Deviation REF Channel: The minimum and maximum channel losses shall be recorded for the 1215 – 1400 MHz band for all J11 (REF) channels. The maximum insertion loss deviation between the highest insertion loss and lowest insertion loss shall be 0.3 dB.

3.1.9 Phase Match for Beam/WX Channels: channels J1 through J10 to any connected output shall deviate no more than 45 degrees from a reference phase for all frequencies 1215 – 1400 MHz. (J11 (REF), and J12 (WX) are not included in the phase match.)

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3.1.10 Reference Phase for Phase Match: The phase measurements shall be taken using the J2-J13 channel with the switch setting 00 as a reference. This phase (s21) shall be captured and used as a reference for all other phase measurements.

3.1.11 Maximum Absolute Phase Deviation: The minimum and maximum phase deviations for all channels J1 – J10 shall be recorded for all frequencies 1215 – 1400 MHz. The maximum phase deviation shall be no greater than 45 deg.

3.1.12 Voltage Standing Wave Ratio (VSWR): The maximum VSWR at all jacks is 1.5:1 regardless of control code.

3.1.13 Input Power Requirements: The amplifier shall operate on a positive supply, which is nominally +20.0 VDC but can vary from +18.0 VDC to +22.0 VDC and a negative supply, which is nominally -20.0 VDC but can vary from -18.0 VDC to -22.0

VDC.

3.1.13.1 Current Drain: The current drain on the +20.0 VDC supply shall be between 250 and 1200 mA. The current drain on the –20.0 VDC supply shall be between 200 and 400 mA.

3.1.13.2 Input Power Quality: Due to the operation of the ARSR-4, the +20 and - 20 VDC power supplies can have up to 6.0 Volt pk-pk spikes riding on the DC power. These spikes have a repetition rate of 1500 usec and a duration of 1 usec.

The RF Transfer Switch shall provide sufficient internal regulation to function under these conditions. Refer to Figure 3 for a typical example of the power supply spikes riding on the +20 VDC supply.

3.1.14 Compression Point: The 1.0 dB compression point shall be at an input level greater than +10.0 dBm. The compression point shall be tested at 1215 MHz, 1308 MHz, and 1400 MHz.

3.1.15 Power and Control Interface: The RF Transfer Switch shall be controlled and powered by a subminiature D connector as shown in the WEC drawing 159C264, Exhibit 2. The control bits are driven by 26LS31 differential line drivers through series 33-Ohm resistors. Pins labeled “N/C” or “SPARE” shall not be connected internally but shall be present in the connector.

3.1.16 Switching Time: Turn on and turn off time shall be less than 1.0 usec from any control input to any other control input. Switching shall be tested by toggling the control input between two selected values at a rate of 1 msec. OFF to ON switching time shall be defined as the time from 50% TTL to 90% RF and ON to OFF switching time shall be defined as the time from 50% TTL to 10% RF.

3.1.17 Port Isolation: The isolation shall be at least 45 dB from any input jack to any unconnected output jack.

3.2 Mechanical Requirements:

3.2.1 Physical Size and Mounting: The RF Transfer Switch shall be constructed as per

WEC drawing 159C264, Exhibit 2.

3.2.2 Weight: The weight shall be no greater than 15 lbs.

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3.2.3 Construction/Sealing: The unit shall be constructed primarily of Aluminum and sealed to IP65 with the connectors mated. The unit shall have removable lids as necessary that allow for module service. Acceptable methods of lid attachment are a removable conductive epoxy and/or screws.

3.2.4 Exterior Surfaces: The exterior of the unit shall be primed with a corrosion inhibiting epoxy primer. It shall then be painted with a polyurethane paint. The final coat of paint shall be a semi-gloss with a color of International Orange (FED-STD- 595, color 12197). Painted aluminum surfaces shall be treated with an appropriate conversion coating. All connectors and mounting hardware shall be masked prior to painting.

3.2.5 Salt Fog: The unit shall be designed to operate while being exposed continuously to a salt atmosphere.

3.2.6 Internal Desiccant: The unit shall have a desiccant installed to absorb any residual moisture that intrudes into the unit.

3.2.7 Internal Wiring: All internal hookup wiring shall be MIL-W-16878/4 (PTFE insulated).

3.2.8 Internal Wire and Cable Marking: All internal wiring shall have shrink wire labels applied at both ends. At a minimum, the wire labels shall indicate the terminal to which the wire is attached. All cables shall have cable labels that at a minimum indicate the connector to which the cable is connected.

3.2.9 Subassembly Labeling: All subassemblies that are designed to be removed, replaced, or repaired shall be marked with a vendor supplied part number unique to that part. All connectors and terminals on the subassemblies shall be marked with a plug, jack, or terminal number that matches the connected wire or cable.

3.2.10 Assembly Marking: The RF Transfer Switch shall be externally marked according to WEC drawing 159C264. The new part number shall be 59C264H02.

This is a serialized assembly and shall be marked with a unique serial number starting at 1000.

3.2.11 Connectors: Connectors shall be in accordance with WEC drawing 159C264.

The N-type connector bodies shall be constructed of passivated stainless steel. The D-subminiature connector shall be constructed IAW MIL-DTL-24308 and shall be corrosion resistant. The unit shall be constructed in such a way that all connectors can be replaced by Logistics.

3.2.12 Fasteners: Exposed external fasteners shall be made of stainless steel.

3.3 Reliability and Maintainability:

3.3.1 Reliability: The unit shall have a minimum mean time between failure (MTBF) rates of 50,000 hours. Reliability shall be predicted in accordance with MIL-HDBK- 217F (CHG 2), using the parts count reliability prediction method found in appendix A. For component failure rate calculations, use the “Ground, Fixed” or Gf environment.

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3.3.2 Electromagnetic Susceptibility and Interference: The unit shall be designed so that it is not susceptible to conducted or radiated emissions from the radar. The unit shall be designed so that it’s conducted or radiated emissions do not interfere with the operation of the radar.

3.3.3 Operating Environment: The unit shall meet all specifications during operation with an ambient temperature between -50 to +50 degrees C, a relative humidity from 5 to 90 percent noncondensing, and an altitude up to 10,000 feet AMSL.

3.3.4 Non-Operating Conditions/Packaging: The unit delivered to the Government packaged for storage shall be able to withstand non-operational conditions as follows: temperature between -50 to +56 degrees C, relative humidity from 5 to 90 percent noncondensing; and an altitude up to 36,000 feet AMSL.

3.3.5 Vibration Environment: The unit shall pass vibration testing in accordance with MIL-STD-810G, CHG 1 method 514.7. This test shall be tailored using Annex C, category 4, to simulate truck transportation over U.S. highways. All test parameters shall be in accordance with Annex C, paragraph 2.1.3.a, Truck Transportation over U.S. Highways, Secured Cargo. The RF Transfer switch for this test shall not be powered and shall be secured to the vibration exciter by the unit’s captured fasteners.

3.3.6 Shock Environment: The unit shall be packaged by the Contractor to prevent damage due to a transit drop from a height of 48 inches.

3.3.7 Repair Capabilities: The RF Transfer Switch assembly shall be designed and constructed so that it can be disassembled, tested, and repaired down to the subassembly level. Disassembly, reassembly, and testing shall not require any specialized tools, materials, or equipment other than those found in a typical electronics repair shop.

3.4 Additional Requirements:

3.4.1 Test Documentation: Test plans, test data sheets, procedures, and schedules to meet the requirements in this document shall be submitted to the FAA for review and comment at least two weeks prior to testing. The FAA shall approve these plans prior to testing.

3.4.2 First Article Testing: First article testing shall consist of thermal and mechanical cycling in accordance with 3.1.1. The FAA shall witness first article testing at the Contractor’s facility and qualification/verification testing will be conducted at the FAA.

The electrical, mechanical, and reliability/maintainability specifications spelled out in this document shall be validated by first article testing.

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3.4.2.1 First Article Qualification Testing: After passing the first article testing, the first article shall be provided to the FAA for qualification testing at the FAA Academy ARSR-4 system. Qualification testing shall consist of operational testing and BIT/FIT testing. The qualification test duration shall be at least 1 week of continuous operation.

3.4.2.2 Repair Instructions: The Contractor shall provide a repair instruction manual containing the disassembly, testing, repair, and reassembly instructions for the RF Transfer Switch. These instructions shall list all of the tools, equipment, and materials needed to disassemble the unit, test each subassembly, repair or replace each subassembly, tune each subassembly, tune the overall assembly, and test the overall assembly. A Test Data Sheet (TDS) that has space to record every Factory Acceptance Test (FAT) measurement shall be included in the repair manual.

Included in the repair instruction manual shall be a list of manufacturers and part numbers for each replaceable subassembly.

3.4.2.2.1 Repair Instruction Approval: The Contractor shall submit the repair instruction manual to the FAA for approval. If there are any changes needed to the manual, the changes shall be submitted to the FAA for approval.

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Figure 1. ARSR-4 RF Transfer Switch, physical part, top view.

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Figure 2. ARSR-4 RF Transfer Switch Equivalent Diagram.

Figure 3: Typical ARSR-4 +20 VDC power supply spikes (AC coupled).

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ACRONYMS

AC alternating current AMSL above mean sea level ARSR-4 Air Route Surveillance Radar model 4 BIT/FIT built in test/fault isolation test CW continuous wave dB decibel dBm decibel relative to a milliwatt DC direct current degrees C degrees Celsius ESD electrostatic discharge EUT equipment under test F3 form fit and function FAA Federal Aviation Administration FAT factory acceptance test GHz gigahertz IP65 intrusion protection level 65 K Watt kilowatt lbs pounds mA milliamp MHz megahertz MTBF mean time between failure nmi nautical miles pk-pk peak to peak REF reference channel RF radio frequency RMS root mean square S21 s parameter 21 SOW statement of work TDS test data sheet usec microsecond VDC Volts direct current VSWR Voltage standing wave ratio

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WEC Westinghouse Electric Company WX weather channel

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8.2 Exhibit 2 (Drawing 159C264)

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8.3 Exhibit 3 (159C264_SWITCH_MATRIX.PDF)

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NUMBER NOTE

XFER_5: Selects between high and low stack beams. Low state: Switches LD through BM5 to the RF

Receiver. High state: Switches BM5 through BM9 to the RF receiver.

XFER_4: Switches between BM5 and REF. Low state: BM5 to the RF receiver.

High state: REF to the RF

Receiver.

XFER_3 (Low Stack): Switches the lookdown beam or beam 1 to the RF receiver.

Low state, BM1 to the

RF receiver. High state: LD beam to the RF receiver.

4 XFER_3 (High Stack): See the high stack switching chart.

5 XFER_(2:0): Spare channel control bits.

SP: When a low/high stack beam is in the spare, the corresponding high/low stack beam is in the default

Path. All channel requirements apply.

7 ISO: When the WX channel (J12) is in the spare, the default WX channel (J18) is isolated.

Port isolation: When an input channel is not connected to an output, it is terminated and isolated from all other channels.

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