1、MILITARY SPECIFICATION B51?dXNSE!TI RAI1AR AN/Al?N-202 This Specification has been approved by the Naval Air Systems Ccpranand, Departnient of the Navy. 1. SCOPE I - 1.1 Scope - The quipnent merd by this specification shall receive i- interrogations fm X-band radars and transmit replies to appropria
2、te interrogations at a different frequency withjn the X-band. 1.2 Classification - The quipnent coveriIFICATINS Military MIL-W-5088 MIGE-5400 MIL-T-5422 MIIrC-6781 MIGP.7788 MIL-w7793 -E-17555 MIL-T-18303 MIL-N-18307 MIL-R-81614 MlIrSD461 MIIiSTP704 MILrSTB78.1 MILrSTD-785 I MIL-B-L5b 5 9999706 0172
3、097 b Wiring; Aircraft, Installation of Electronic EQmmt, Aircraft, General Specification for Testing, Environmental, Aircraft Electronic Elpipent control Panel; Aircraft litpipent, Rack or ansole Wuntd Panels, Infonnation, Integrally Illminatd Meter, The Totalizing Electronic and Electrical Equipme
4、nt and Associated Re parts, preparation for Delivery of Test Procedures; Preproduction and Acceptance for Aircraft Electronic EQuipnent, Fbnnat for Ncmnclature and Nameplates for Aeronautical Electronic and Associated litpipent Receiver, Radar Augmentor *1623/ApN; Modulator, X-Band Beacon MP817/APN
5、and Antenna, Ka-Band Radar AS-2406/ApR Electrmnagnetic interference Characteristics, Requirements for pent Electric mer, Aircraft, Characteristics and Utilization of Reliability Tests, Exponential Distribution Reliability Progran for Systan and mirnt Development and Production 2 Licensed by Informat
6、ion Handling ServicesLicensed by Information Handling ServicesLicensed by Information Handling Services3.3.2.3 Reliability in Mean Time Between Failure (MJBF) - The quip- NOP Mean operat- life of the magnetron shall be at least mt shall have 1000 hours of ma- (opratirg) time between failures when te
7、sted and accepted as outlined under the requirements of 4.4.2.2.1. mal scheduled maintenance for the magnetron is pemiissible during these tests if required. 400 hours. 3.3.2.4 Time IlotalizhgMeter - The follmhg units shall contain th totalizing meters in accordance with Specification MIL-M-7793. wt
8、 1028/APN-202 Typ of Meter MS-17321-9 3.3.3 Cablinq and Connections 3.3.3.1 Cables and Connectors - The qc .in which case the maxi- m prf shall be that corresponding to the rmximum allmable duty cycle. 3.5.1.5 Randm Triggering - The equipment shall not, generate randan replies (those replies not syn
9、cbnized with interrogations) at a rate greater than 10 pps under any operation conditions specified herein, 3.5.1.6 Receiver Frequency - The center frequency of the receiver- transmitters receiver passband shall be adjustable to any frequency frm 8500 to 9500 MHz. center frequency is defined as the
10、mid-point frequency between the receiver passband 3 panel, paragraph 3.5.2. 3.5.1.19 The standard double- pulse spacings shall be as follows: ._ 1 11 Licensed by Information Handling ServicesSingle Fulse 49 + 4.9 usec 62 + 6.2 usec 99 + 9.9 usec 124 + 12.4 usec 148 + 14.8 usec - - - - - 3.5.1.20 Ext
11、ernal Triqger Input - inputs shall be provided for external triggering at the transmitter. tude from 7 to 11 volts, masured across 100 ohms, shall be required to trigger the transmitter. 3.5.1.21 Detected RF Output - A video pulse whose leading edge is indicative of the reply transmission the shall
12、be provided. Anplitude of this pulse shall be -0.5 volts miniman when measured across 100 ob. dulator capable of applying qlitude mdulation to the transmitter re- ply pulse. in peak per output and be switchable in 1 usec or less. front-panel jack shall be provided to accept the externalmdulating Sig
13、- nal. A positive pulse having an ampli- 3.5.1.22 External Wulation - The transponder shall contain a The rmlulator shall be capable of producing a 3 dB variation A transponder Pkininal mduating frequency is 100 Hz. 3.5.1.23 Video Output - A processed receiver video output shall be provided. across
14、a 100 ohm load. Video signals shall be 9 + 2 volt positive pulses when measured 3.5.1.24 Form Factor - Tne receivetransmitter shall be enclosed in a case not to exceed 6.88 x 2.82 x 6.8 inches excluding connectors. Reference EI-564. - 3.5.1.24.1 not exceed 5.5 Ibs. 3.5.1.25. Weiqht - Th weight of th
15、e receiver-transmitter shall Controls - The follming controls shall be provided on the external surface of the receiver-transmitter: 12 -_ - - - Licensed by Information Handling ServicesLicensed by Information Handling Services- MIL-B-81856 58 m 9999906 0172109 9 m MIL-B-81856 (AS) Reference Designa
16、tion Connector Part No. J1 J2 GRFF 4075-0007 14S3114Hl4-19P Function Antenna Connection Power Control and Test J3 GFVF 4068-0001 External Data Trigger 54 GRFF 4068-0001 External Trigger J5 GFE” 4068-0001 Video Output J6 GRFF 4068-0001 Detected RF J7 GRFF 4068-0001 Ekternal Fiplitude Dbduiation 3.5.1
17、.28 ing sub-assemblies: Content - The receiver-transmitter shall contain the follow- 1. RF-Rssembly 2. IF-Zuplifier 3. Deooder-EhCoder 4. Wuator 5. Pmer Supply 3.5.2 cbntrol, Radar Beacon C-8752/AN-202 - The control shall met the applicable requirements of Specification IILrC-6781 for Typ? I control
18、 Panel. LMZ-P-7788 Class 1-R, Type N with a lamp voltage of 5 volts. The lighting of the plastic panel shall conform to 3.5.2.1 Function - The control shall provide a means of setting the operational niode and selecting the desired interrogation and reply code structures. 3.5.2.2 Controls - The cont
19、rol panel shall!:have the follming controls: 14 Licensed by Information Handling ServicesOFF - Pmer rmved from all equipment STBY - (Standby) Power is applied to the receiver-transmitter, but the trapsmitter shall not respnd to interrOgations. The receiver-transmitter is fully operative and BCN - (B
20、eacon) TEST - A Bi“ signal is applied to the receiver-transmitter and the ACLS Augmentor receiver. the transmitter to generate X-band reply signals. X-band replies shall be detected and cause a “GO“ indi- cation at the control panel test lamps. Separate lamps shall be provided for the receiver-trans
21、mitter and aug- mtor receiver. shall respond to valid X-band interrogations. The test signal shall cause The ACIS - Pmer is applied to the ACLS augmentor receiver and the receiver-transmitter receiver is placed in standby. receiver-transmitters transmitter shall be triggered by signals from theaugme
22、ntor receiver. The to the modulator at Ls3. (b) DECODE“ - A six position rotary switch for selecting the re- ceiver-transmitter address de shall have the follming positions: S - Single Pulse 1 - Double Pulse Code 1 2 - Double Pulse Code 2 3 - Double Pulse Code 3 4 - Double Pulse code 4 5 - Double Pu
23、lse code 5 15 Licensed by Information Handling ServicesLicensed by Information Handling Services(a) Elevation *. - The 1/2 power beamwidthshall be 14 (b) Azimuth - urnii-directional+ - 2 dB. degrees minirmrm. 3.5.3.5 Input IqEdan ce and VSWR - The nominal input impeaanCe shall I. be 50 oilms with a
24、maximum VSWS of 1.7:l maxhnm 3.5.3.6 Gain - The gain, with respect to a linear isotropic shall be plus 3 i3 minimum at peak of beam and O dB naninal at 14 egrees above the ground ?lane (horizontal) 3.5.3.7 Fonn Factor - The form factor shall be as indicated in EI564-3. 3.5.3.8 External corinector -
25、The extemal connector to the antenna shall mate with a type INC mle connecbr. 17 Licensed by Information Handling ServicesMIL-B-81856 58 777770b 0172113 O W MIL-B-81856 (AS) 4. QUALm ASSURANa PROVISIONS 4.1 %spnsibility for Inspection - Unless othmise specified in the contract or purchase order, the
26、 supplier is responsible for the performance of all inspection requirements as specified herein. as otherwise specified, the supplier may utilize his am facilities or any camriercial laboratory acceptable to the Govemnt. reserves the right to perform any of the inspections set forth in the specifica
27、tion where such inspections are dd necessary to assure supplies and services conform to prescribed requirements. shall be subwed to the follwing tests to determine cmpliance with all applicable reqyirerents. . Except The Governmnt 4.1.1 Classification of Tests - Items covered by this specification (
28、1) Preproduction (First Article) Tests (2) Initial Prochiction Tests (3) Acceptance Tests (4) Life Tests 4.2 Preproduction (First Article) Tests - Preproduction tests Bepro- shall be conducted by the contractor on an equipment representative of the production equi-ts to be supplied under the contrac
29、t. duction tests shall be accwlished under the approved test procedure of 4.6. when tests are to be conducted so that a governmnt representative may be designated to witness or supervise the tests when so desired. not having adequate facilities to conduct al1 required tests shall obtain the services
30、 of a cmrcial testing laboratory acceptable to the Govern- nient. The Govemrru3nt Inspector and the pmculring activity shall be advised Contractors 4.2.1 Prepwuction (First Artilce) Test Data - The contractor shall submit all data collected in conducting these tests to the procuring acti- vity for r
31、eview. 4.2.2 Scope of Tests - Preproduction tests shall include all tests deemed necessary by the procuring activity to determine that the equip- mt mets all the requiremnts of this specification, other applicable specifications and the contract. mtal tests in accordance with the procedures of Speci
32、fication MuiT-5422. Preproduction tests shall include environ- 18 Licensed by Information Handling Servicesmaterial or performance defect made Failure of the Initial Production Licensed by Information Handling Servicesc accmplished. previously accepted when requested by the procuring activity. Corre
33、ctive action shall also be acccanplishd on equipnmt 4.3.4 Reconditioning of Initial Production Test Sample - On-cqletion tractor by replcing all wear or damaged it-. tractor shaii res-t the equi-t for acceptance. After reaxkinim of operation, ease of maintenance, and an improvgnent in the prfonnance
34、 arid reliability of the specific functions beyond the requirements of this *I 25 Licensed by Information Handling ServicesMIIrB-81856 (PS) specification are objectives which shall be considered in the production of this quiprent. where it aws a substantial reduction in size weight or Improvement in
35、 simplicity of design, performance, ease n= m tenance or reliability will result fm the IISP nf mtnd a1 C. r I -1 - - -.r, - desired their use be investibatnnber of puises, or pulse groups (in the case of two pulse codes), which occur per smd. 8. Satisfactory Performance: The tem “Satisfactory Performance“ shall mean the operation of the equip- mt within the applicable limits of this specifi- cation as delineated in the test prooedures. 27 Licensed by Information Handling Services*U.S. GOVERNMENT PRINTING OFFICE: 1912-114-909/324 28 Licensed by Information Handling Services
