Attachment 2 - DTO 189970 Technical Requirement & Specifications. pdf.pdf

03/27/17 Rev D

FAA Oscillator Requirements for Replacement of

DTO Part Numbers 187828 and 189970 in ASDE-3 and ASDE-3X

Surface Surveillance Systems

Revision Change Date By

Rev B clarification 11/30/16 B. Ray

Rev C Required device changed from DTO to oscillator

3/23/17 B. Ray

Rev D Wording of paragraphs 1.1 and

2.1

3/27/17 B. Ray

OSCILLATOR REQUIREMENTS

1.0 SCOPE: This document defines the requirements for a Ku band oscillator function which shall be a commercial level form, fit and function replacement of DTO part numbers 187828 and 189970.

1.1 Only the item described on this document when procured from the vendor(s) listed herein is approved by the FAA sponsor for use in the application(s) specified herein. A substitute item shall not be used without prior approval of FAA Surface Radar Systems division.

2. REFERENCE DOCUMENTS:

2.1 ISSUES OF DOCUMENTS: The following documents are incorporated as a part of this specification to the extent specified herein. In the event of conflict between these documents and this specification, this specification shall be considered a superseding requirement.

MIL-C-24308 - CONNECTORS, ELECTRICAL, RECTANGULAR

MIL-C-39012 - CONNECTOR, COAXIAL, RADIO FREQUENCY

MIL-STD-130 - IDENTIFICATION OF U.S. MILITARY PROPERTY

MIL-STD-810 - ENVIRONMENTAL TEST METHODS

IPC-D-275 - DESIGN STANDARD FOR RIGID PRINTED WIRING BOARDS &

PRINTED WIRING BOARD ASSEMBLIES.

95542-185200 - GENERAL SUBSTITUTION LIST

3. REQUIREMENTS:

3.1 GENERAL: The oscillator shall be designed to meet the requirements of this specification.

3.1.1 INTERCHANGEABILITY: The oscillator shall be interchangeable on a unit-to-unit replacement basis without requiring realignment.

3.2 ELECTRICAL:

3.2.1 OUTPUT FREQUENCY: The oscillator output frequency shall be one of 21 frequencies spaced by 25 MHz covering the range from 16.95 GHz to 17.450 GHz.

3.2.2 TUNING: The oscillator output frequency shall be selectable via a 5- bit digital control word with the characteristics specified in note 3.2.12.1 and digital values per TABLE A.

3.2.3 OUTPUT POWER: The oscillator output power shall be within 1.5 dB of +12 dBm for all conditions of operation specified herein.

3.2.4 OUTPUT POWER VARIATION: The oscillator output power shall not vary by more than ±

1.0dB over any 500 MHz bandwidth within the specified frequency range for all conditions of operation specified herein.

3.2.5 FREQUENCY ACCURACY:

3.2.5.1 ABSOLUTE ACCURACY: The oscillator output frequency shall settle to within 10 MHz of the desired output frequency (as per TABLE A) within 1.5 microseconds after a new frequency control word is made available.

3.2.5.2 INCREMENTAL ACCURACY: The spacing between any two settled frequencies shall be within ± 4 MHz of the desired multiple of 25 MHz.

3.2.6 FREQUENCY STABILITY:

3.2.6.1 SHORT TERM STABILITY: The oscillator output frequency shall not vary by more than 3

MHz, minimum to maximum, in the time interval from 1.5 microseconds to 1 millisecond relative to when the new frequency control word is made available.

3.2.6.2 LONG TERM STABILITY: The oscillator shall be designed to meet all frequency stability and accuracy requirements specified herein for a minimum period of 5 years without requiring adjustment. (see note 6.1).

3.2.7 PHASE NOISE: The oscillator phase noise shall be at least 60 dB below the carrier per hertz bandwidth for frequency offsets of 100 KHz or greater from the carrier.

3.2.8 SPURIOUS OUTPUTS: All harmonically and non-harmonically related spurious signals shall be at least 50 dB below the carrier. Power supply ripple induced outputs shall be at least 50 dB below the carrier when the ripple has a peak to peak amplitude of 0.1% maximum and frequency components of up to 20 MHz.

3.2.9 FREQUENCY PULLING: The oscillator shall meet all specified requirements when connected to a load having a VSWR as high as 1.5:1 at any phase.

3.2.10 FREQUENCY PUSHING: The oscillator shall meet all specified requirements when driven by power supplies whose output voltages are regulated to within ± 5%.

3.2.11 WARM-UP TIME: The oscillator shall meet all specified requirements within 3 minutes after the application of all DC power.

3.2.12 INPUTS:

3.2.12.1 DIGITAL CONTROL WORD: The digital frequency control word shall be a 7 bit parallel

TTL compatible signal. Each input line shall represent no more than 5 low power Schottky unit loads in either the low or high logic state.

3.2.12.2 DC POWER: The oscillator shall operate with any combination of the following voltages:

A) +5 V @ 0.1 A MAX

B) +15 V @ 0.75 A MAX

C) -15 V @ 0.1 A MAX

3.2.12.3 HEATER: A heater voltage of +24 Volts, ±15%, is available. Current is limited to a 3

Amps during warm-up time and 1 Amp maximum thereafter.

3.3 MECHANICAL:

3.3.1 OUTLINE CONFIGURATION: The oscillator shall conform to the outline dimensions and configuration shown in figure 1.

3.3.2 WEIGHT: The weight of the oscillator shall be 2 lbs or less.

3.3.3 CONNECTORS: RF connector shall be type SMA female in accordance with MIL-C-39012.

Power, ground, and digital control word input lines shall be brought into the unit through a multi-pin connector (J1) which shall be compatible with a type M24308/2-2 mating connector. The multi-pin connector pin assignments shall be in accordance with TABLE B. Spring latches, part number

95542-185200-177, shall be provided as shown in figure 1.

3.3.4 COOLING: The oscillator will be mounted in an enclosed assembly and heat transfer will be via natural convection and conduction through the mounting surface.

3.3.5 PARTS, MATERIALS, PROCESSES & WORKMANSHIP: Parts, materials, processes & workmanship shall comply with good commercial practice.

3.3.5.1 CONSTRUCTION: The unit enclosure and all hardware shall be of corrosion resistant material or be treated with corrosion resistant finish.

3.3.5.2 PRINTED WIRING BOARDS: Printed wiring board designs shall comply with IPC-D-275

Class 2 requirements.

3.3.5.3 INPUT/OUTPUT MARKINGS: All input and output connections shall be marked with jack numbers and function names.

3.3.6 PIECEMARK: The oscillator shall be permanently and legibly marked with the source control activity cage code, the notation, “SOCN”, and the source control part number per MIL-STD-130.

Example: 95542SOCN189970.

3.3.6.1 SERIALIZATION: Each unit shall be serialized beginning with the number 1000.

3.4 ENVIRONMENTAL:

3.4.1 OPERATING: The oscillator shall meet all of the preceding electrical and mechanical specifications when subjected to any of the following operational environmental service conditions or combinations thereof for the duration of its intended service life:

3.4.1.1 TEMPERATURE: - 10°C to +65°C.

3.4.1.2 HUMIDITY: 5% to 90%.

3.4.1.3 ALTITUDE: 0 to 10,000 feet

3.4.2 NON-OPERATING: The oscillator shall not be damaged or its performance degraded after being subjected to any one of the following non-operating environmental conditions or combinations thereof:

3.4.2.1 TEMPERATURE: -50°C to +70°C.

3.4.2.2 HUMIDITY: 0% to 100%. Non-condensing

3.4.2.3 ALTITUDE: 0 TO 50,000 feet.

3.4.2.4 SHOCK: Per MIL-STD-810, Method 516, bench handling.

3.5 MAINTAINABILITY:

3.5.1 MAINTAINABILITY: The oscillator shall be vendor factory repairable in order to maintain the frequency accuracy per the requirements of this specification. A factory adjustment will be permitted at periodic intervals of not less than 5 years.

4. QUALITY ASSURANCE PROVISIONS:

4.1 RESPONSIBILITY FOR INSPECTION: The manufacturer is responsible for the performance of all inspections, tests and data recording requirements as specified herein. The manufacturer shall use their own facilities and equipment, or other suitable facilities or equipment, in performance of the inspection and testing specified herein.

4.2 REQUIRED INSPECTION AND TESTS:

4.2.1 VISUAL AND MECHANICAL INSPECTION: The oscillator shall be inspected to verify that the materials, designs, fabrication, physical dimensions, finish, marking, and workmanship conform to the requirements of this specification.

4.2.2 BURN-IN: Each unit shall have a minimum of 72 hours of failure free fully loaded operation at

25°C ambient. This failure free interval can be reduced to 24 hours if the burn-in temperature is increased to +55°C minimum.

4.2.3 SHOCK TEST: Each unit shall be subjected to a shock test per MIL-STD-810, Method 516 bench handling.

4.2.4 PERFORMANCE TESTS: Subsequent to burn-in and the shock test, each unit shall successfully meet the requirements of Notes 3.2.1 thru 3.2.11 of this specification. Contractor test plan and test procedures subject to approval of FAA Systems Engineer. For each unit, test data shall be supplied to demonstrate compliance with the following notes:

3.2.2 Output Frequency vs Control Word

3.2.3 Output Power vs Output Frequency

3.2.5.1 Time to Settle to Within 10MHz vs Control Word

3.2.5.2 Output Frequency Error vs Control Word

3.2.6.1 Short term (1.5us – 1ms) Frequency Variation vs Output Frequency

3.2.7 Phase Noise vs Output Frequency

3.2.8 Spurious Output vs Output Frequency

4.3 CORRECTION OF DEFECTS: The vendor shall be responsible for correction of all design, construction, or other deficiencies which are uncovered by any subsequent tests by the purchaser, and shall be responsible for replacement or rework of deficient unit at no cost to the purchaser.

4.4 WORKMANSHIP AND DESIGN PROBLEMS SHALL BE THE RESPONSIBILITY OF

THE VENDOR.

4.5 CERTIFICATION OF COMPLIANCE (C OF C): The supplier(s) shall provide a C of C stating that the part(s) being supplied are in full compliance with this drawing along with the test data required in Note 4.2.4 by serial number.

5. PREPARATION FOR DELIVERY: Unless otherwise specified in the purchase order, units shall be preserved, packaged, and packed for delivery in accordance with manufacturer’s normal commercial practices for items of similar construction and value. The transportation design environment for the oscillator and packaging shall include vibration levels of 5 Hz to 200 Hz with

1.5 g’s peak and shock levels up to 5 g’s. The equipment as packaged for shipment shall be protected from the above transportation requirements.

TABLE A

CONTROL WORD VERSUS OUTPUT FREQUENCY

CONTROL FREQUENCY WORD (GHz)

MSB - LSB GHz

0000000 16.950

0000001 16.975

0000010 17.000

0000011 17.025

0000100 17.050

0000101 17.075

0000110 17.100

0000111 17.125

0001000 17.150

0001001 17.175

0001010 17.200

0001011 17.225

0001100 17.250

0001101 17.275

0001110 17.300

0001111 17.325

0010000 17.350

0010001 17.375

0010010 17.400

0010011 17.425

0010100 17.450

NOTE: 7-BIT digital control word is stated with MSB on left, see TABLE B for pin assignments.

TABLE B

PIN ASSIGNMENTS

PIN NO. FUNCTION NAME

1 2°

2 2

3 2

4 2

5 GND

6 -15V

7 +24V

8 +24V RTN

9 2

10 2

11 2

12 +5V

13 +15V

14 +24V

15 +24V RTN

figure 1

OUTLINE CONFIGURATION