Contracts, Code 25421F Bldg 588 Suite 2, NAWCAD, 47253 Whalen Road Unit 588, Patuxent River MD 20670-1463

58 -- HIGH SPEED CW/PULSED ANTENNA MEASUREMENT SYSTEM SOL N00421-97-R-1140 POC Cindy Gill, Contract Specialist, Phone (301)342-1825 ext. 164, Fax (301)342-1864. Mark Drager, Contracting Officer, Phone (301)342-1825 ext. 121. This is amendment 001 to the synopsis/solicitation N00421-97-R-1140 for a High Speed Pulsed Antenna Measurement System that originally appeared in the CBD on Thursday January 16, 1997. The purpose of this amendment is to replace the specifications as follows: The contract line item numbers are: CLIN 0001 High Speed CW/Pulsed Antenna Measurement System for a full scale aircraft antenna range. OPTIONS: CLIN 0002 Extended Lower frequency range capability for the receiver and the source, CLIN 0003 Extended Higher frequency range capability for the receiver and the source, CLIN 0004 Pattern Recorder, and CLIN 0005 Laser Printer. The specific requirements of CLIN 0001, the High Speed Data Acquisition System are as follows:(1) The CLIN 0001 is amended to read CW/Pulsed Antenna Measurement System. The specific requirements of CLIN 0001, the High Speed Data Acquisition System are as follows: (a) The system must directly and completely interface with an existing Orbit model 4510-1 three axis positioner and its associated control equipment (the proposal must include all equipment necessary for this interface). (b)The CW/Pulsed Antenna Measurement System should consist of the following major subsystems: (1) Transmit (2) Receive (3) Positioning (4) Pulse Generation/Modulation (5) Digital Processing and Data Storage (6) Acquisition and Analysis Software (c) The system shall also consist of all ancillary items necessary for operation including but not limited to the following: All interconnecting and interfacing cables, these cables shall be permanently matched marked for future removal/reinstallation. Equipment rack with all hardware necessary to safely secure equipment and a Control console. (d) SALIENT CHARACTERISTICS: Vender shall provide a complete automated, integrated system including as a minimum all the equipment specified herein. (e) MICROWAVE RECEIVER: (1) The microwave receiver operating in a CW mode shall be capable of acquiring amplitude and phase data at a minimum continuous rate of 5000 measurements per second. This rate shall be maintained while measuring a minimum of 32 measurement channels over the receiver full dynamic range. A single data point is defined as both an amplitude and phase measurement of the RF signal. Switch insertion loss on any of the 32 channels shall not exceed 5 dB at 18 GHz, i.e. tiering of switches shall not exceed 5 dB loss at 18 Ghz. (2) The System controller shall not cause the microwave receiver measurement speed to decrease below the required continuous rate of 5000 measurements per second. (3) The microwave receiver shall have a minimum frequency ability of 0.1 to 20 GHz covering the frequency range in no more than two frequency bands. (4) When configured in the microwave system, the receiver shall maintain constant phase- lock with the transmit signal source even when the source is changing frequencies within a frequency band of 0.1 to 20 Ghz. (5) When the microwave receiver is operated in the 2 to 18 GHz range, the dynamic range shall be a minimum of 85 dB without averaging Sensitivity shall be a minimum of -105 dBm at 2 GHz and increase to a minimum of -110 dBm at 18 GHz. (6) The microwave receiver shall have IEEE-488, RS 232/449 and high speed parallel interfaces. (7) The microwave receiver shall have front panel controls with data display capabilities. (8) The microwave receiver shall have phase accuracy of 1.0 over the full dynamic range. (9) The microwave receiver must be capable of accepting and generating TTL compatible signals to allow operation in either a slave or master configuration. (f) MICROWAVE SIGNAL SOURCE: (1) The microwave signal source shall be capable of remote operation at distances of 2,000 feet. (2) When configured in the microwave measurement system, the signal source and the receiver shall maintain constant phase lock even during frequency changes within a 0.1 to 20 GHz frequency range. (3) The microwave signal source shall have a minimum frequency range of 0.1 to 20 GHz without external components to achieve the frequency band. (4) The signal source shall be a synthesized source and harmonics shall be a minimum of -45 dBc. (5) The internal power leveling stability shall be a minimum of plus or minus 0.02 dB / degree C for 0.1 to 20 GHz. The variation with frequency shall be a maximum of plus or minus 1 dB for 0.1 to 1 GHz and plus or minus 2 dB / octave band for 1 to 20 Ghz. (6) The frequency selection for the signal source shall be capable of being accomplished manually from the front panel, or through a keyboard, or automatically via an IEEE-488 interface. (7) The frequency accuracy of the signal source shall be a minimum of plus or minus 2.5 x 10 to the negative seventh power. (8) The stability of the synthesizer signal source shall be a minimum of 1 x 10 to the negative tenth power / degree C. (9) The signal source shall be programmable via the IEEE-488 interface. (g) PROCESSING: The System shall include at a minimum (1) 100 MHz Pentium Processor (2) 16 MB RAM (3) 1.2 GB IDE Hard Drive (4) 3.5v Disk Drive (5) 4x CD-ROM Drive (6) 17v High Resolution Color Monitor (.28 Dot pitch minimum) (7) Removable 1.0 GB minimum Hard Drive Backup (8) Minimum of 7 I/O ports (9) Microsoft Mouse or Equivalent (10) Windows NT version 4 (h) ACQUISITION AND ANALYSIS SOFTWARE: (1) The software shall allow a pre-defined acquisition test file to run or to create or modify an acquisition setup file for subsequent run. The acquisition setup file shall consist of antenna measurement abstractions that are eventually translated to instrument-specific directives and used to program the instruments for measurements. (2) The software must be capable of analyzing and printing Directivity, Gain, Polarization patterns, Planar patterns, Monopulse patterns, Monopulse error curve, Pattern boresite, Scan statistics and Analysis comparison. (3) The software must be capable of displaying, Rectangular plots, Polar plots, Contour plots, Colorfill plots, Multiquadrant displays, Plot overlays and Real-time confirmation plots. These displays shall provide user defined format, range, and color. (4) The system output shall be in ASCII format. (5) System shall be capable of full 360 degrees patterns, i.e. 0 to 360 degrees -- and not limited to 0.00 to 359.99 degree patterns. (6) System shall be capable of collecting, processing/plotting data simultaneously. (7) Provide for software positioner stops. (i) POSITIONER CONTROLLER: (1) The positioner programmer shall have the capability to be programmed from the front panel or via an IEEE-488 interface bus. (2) The positioner programmer shall allow any of six axes to be selected and driven to a commanded position. (3) The positioner programmer shall allow programming of a raster scan through control of two axes. The scan shall be accomplished by scanning on axis over a selectable sector while stepping a second axis in discrete increments. The sector shall be selectable from 0.00 to 359.99 degrees. The step angle increment shall be selectable from 0.00 to 9.99 degrees. (4) The positioner programmer shall allow the scan and step axes to be selected from any of thesix axes. (5) The direction of the designated step and scan axes shall be programmable to be either forward or reverse. (6) The positioner controller shall have a front panel mounted rotary control for manual control of the positioner speed/direction. (7) The positioner controller shall have as a minimum IEEE-488 and RS-232C communication interfaces. (j) OPTIONAL EQUIPMENT: (1) The contractor shall propose the following items separately. All items proposed must include any ancillary equipment necessary to operate. These options may be purchased together or individually, and if applicable must also be fully integrated into the Antenna Measurement System. (All cost must reflect options fully integrated into the system). (2) Extended Lower frequency range capability for the receiver and the source from 20 MHz to 100 Mhz. (3) Extended Higher frequency range capability for the receiver and the source from 20 GHz to 26.5 Ghz. (4) Pattern Recorder: The recorder shall have the capability to display data in both polar and rectangular coordinates as a minimum. The recorder shall have the capability of data storage, archiving and retrieval. The recorder shall have the ability to display real time patterns for CW and pulsed measurements. The recorder shall have multiple trace capabilities that can provide overlay comparisons. The recorder shall have the capability of axes labeling and reformatting of patterns including changing the scale. The recorder shall have the capability to output data to a laser printer or plotter. (5) Laser Printer (Post Script level 2 with enhanced PCL 5, and minimum of 32 MB of memory. (6) Ink Jet Color printer with Post Script level 2 with enhanced PCL 5, provide 600 x 600 dpi, and be a two cartridge system. (7) Ethernet LAN interface IEEE 802.3 NOTE: Options to be exercised within 270 days after date of contract award. (k) MAINTAINABILITY: The CW/Pulsed microwave measurement system shall be made up of commercially available removable, replaceable and/or repairable subassemblies to the maximum extent possible. These subassemblies shall be laid out to facilitate ease of maintenance by one person in a minimum amount of time. All subassemblies, interconnecting cables and connectors shall be clearly and permanently labeled to ensure proper reassemble during maintenance. (l) QUALITY ASSURANCE PROVISIONS: (1) Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all requirements as specified herein. The contractor shall deliver CLIN 0001 with data (i.e. commercial manuals for operating, maintenance, list of replacement parts) within 150 days after contract award to: Receiving Officer, Supply Dept., Bldg. 665, M/S 31, Naval Air Warfare Center Aircraft Division, Patuxent River, MD 20670-5304, Attn: Paul Fritz, Code 4.5.5.5. Inspection and acceptance shall be made at destination. The system should be delivered to NAWC Patuxent River fully calibrated and ready for operation. The system should include on-site installation and operator training at the NAWC Patuxent River and be fully operational within five working days after delivery. Prior to final acceptance, Naval Air Warfare Center, Patuxent River, reserves the right to perform any of the tests set forth in this specification when such tests are deemed necessary to insured the microwave measurement system meets the stated requirements. The deliverables should include all standard commercial support documentation and equipment manuals for all system and sub-system components including a Certificate of Calibration. Responses to this solicitation should include acknowledgment of receipt of this amendment. The proposal due date of 14 February 1997 remains unchanged. Any questions regarding this procurement should be submitted before 2:30 PM Easter Standard Time 6 February 1997 to Ms. Cindy Gill at CONTRACTS, CODE 25421F BLDG 588 SUITE 2, NAWCAD, 47253 WHALEN ROAD UNIT 588, PATUXENT RIVER MD 20670-1463, Fax 301/342-1864. The responses to those questions shall be addressed in a future amendment to be published in the Commerce Business Daily. (0017)

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