1、MIL-R-81876B(AS)4 October 1988SUPERSEDINGMIL-R-81876A(AS)MILITARY SPECIFICATIONRECEIVER-TRANSMITTER RADIOAN/APX-100(V)23 April 1987SETThis specification is approved for use within the NavalSystems Command, Department of the Nevy, and is available forby all Departments and Agencies of the Department
2、of Defense.1. SCOPEAiruse1.1 f distribu-tion is unlimitedProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-81876B(AS)2. APPLICABLE DOCUMENTS2.1 Government documents.2.1.1 Specifications and standards. The following specifi-cations and standards f
3、orm a part of this specification to theextent specified herein. Unless otherwise specified, the issuesof these documents shall be those listed in the issue of theDepartment of Defense Index of Specifications and Standards(DODISS) and supplement thereto, cited in the solicitation.SPECIFICATIONSFedera
4、lQQ-P-416MilitarvMIL-C-172MIL-B-5087MIL-W-5088MIL-E-5400MIL-T-5422MIL-C-6781MIL-P-7788MIL-M-7793MIL-E-17555MIL-T-18303MIL-N-la307Plating, Cadmium (Electrodeposited)Cases, Bases, Mounting; andMounts, VibrationBonding, Electrical, and LightingProtection, for Aerospace SystemsWiring; Aerospace VehicleE
5、lectronic Eguipment, Aerospace,Specification forTesting, Environmental,AirborneElectronic and Associated EquipmentControl Panel; Aircraft Eguipment,Rack or Console MountedPanels, Information, IntegrallyIlluminatedMeter, Time TotalizingElectronic and Electrical Eguipment,Accessories, and Repair Parts
6、rPackaging and Packing ofTest Procedures; Preproduction, Accep-tance and Life for Aircraft ElectronicEquipment, Format forNomenclature and Identification Name-plates for Aeronautical Systems In-cluding Joint Electronic Type Desig-nated Systems and Asso.:ia?ed SupportSystems2Provided by IHSNot for Re
7、saleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-81876B(AS)UIL-S-19500MIL-T-23103MIL-C-25050MIL-L-27160MIL-C-38999MIL-H-46855MIL-P-5511OMIL-L-85762Semiconductor Devices, GeneralSpecification forThermel Performance EvaluationAirborne Electronic Eguipment andsystems; Gene
8、ral Requirements forColors, Aeronautical Lights and LightingEguipment, General Requirement forLighting, Instrument, Integral, White,General Specification forConnectors, Electrical, Circular, Mina-ture, High Deneity, Quick-Disconnect,Environment Resistant, Removable Crimpand Hermetic Solder Contacts,
9、 GeneralSpecification forHuman Engineering Requirements forMilita Systems, Equipment andFacilitiesPrinted Wiring BoardsLighting, Aircraft, Interior, AN/AVS-6,Aviators Night Vision Imaging System(ANVIS) CompatibleHaval Air Svstems Com-WS-6536STANDARDSEf2Kd.FED-STD-595MIL-STD-129MIL-STD-21OMIL-STD-275
10、MIL-STD-454Process Specification Procedures andRequirements for Preparation and Sol-dering of Electrical ConnectionsFederal Standards ColorsMarking for Shipment and StorageClimatic Extremes for Military Equip-mentPrinted Wiring for Electronic EguipmentStandard General Requirements forElectronic Equi
11、pment3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-81876B(ASMIL-STD-461MIL-STD-462MIL-STD-470MIL-STD-471MIL-STD-701MIL-STD-704MIL-STD-781MIL-STD-785MIL-STD-81OMIL-STD-883MIL-STD-965MIL-STD-1472MIL-STD-1553MIL-STD-2074MIL-STD-2076MIL-STD-2077
12、MIL-STD-2084MS-9140-3Electromagnetic Emission and Suscepti-bility Requirements for the Control ofElectromagnetic InterferenceElectromagnetic Interference Character-istics, Measurement ofMaintainabilityEquipmentMaintainabilityProgram for Systems andDemonstrationList of Standard Semiconductor DevicesA
13、ircraft Electric Power CharacteristicsReliability Tests, ExponentialDistributionReliability Program for Systems andEquipment Development and ProductionEnvironmental Teet Methods and Engineer-ing GuidelinesTest Methods and Procedures forMicroelectronicsParts Control ProgramHuman Engineering Design Cr
14、iteria forMilitary Systems, Eguipment and Facili-tiesAircraft Internal Time Division Com-mand/Response Multiplex Data Bus.Failure Classification for Reliabil-ity TestingUnit Under Test Compatibility withAutomatic Teet Equipment, GeneralRequirements forTest Program Sete,meritsforMaintainability oftro
15、nic Systems andRequirements forGeneral Reguire-Avionics and Elec-Eguipment, GeneralGasket-Type XIX Engine AccessoryDrive4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-81876B(AS)MS-14108-3 Fastner, Positive Self-Locking CaseMounting, Electroni
16、c EguipmentMS-17321 Meter, Time Totalizing, Miniature,Digital, 28 Vdc2.1.2 !3thr Government Document s. The following otherGovernment document form a part of thie specification to theextent specified herein. Unlees otherwiee specified, the issueshall be that in effect on the date of the solicitation
17、.Army Avionice Research and Development ActivityICD8309 MIL-STD-1553 Interface Control Documentfor RT-14710/APX-100(V) IFF RadarReceiver-Transmitter(Copies of specifications, standards, and other Governmentdocumente required by contractors in connection with spacificacquisition functione should be o
18、btained from the contractingactivity or as directed by the contracting activity.)2.2 n ce. In the event of a conflict betweenthe text of thie specification and the references cited herein,the text of this specification ehall take precedence. Nothingin this specification, however, shall supersede app
19、licable lawsand regulations unlees a specific exemption hae been obtained.3. REQUIREMENTS3.1 First Arti cle. When specified in the contract (eee6.2.1), a sample shall be subjected to first article inspection(eee 4.3 and 6.4).3.2 . In the selection of parts, the primeconsiderations are fulfillment of
20、 performance requirements,logistics supportability, and reliability aseurance in a costeffective design. The following shall govern in parts selection.a. Subassemblies shall be designed and fabricated to be .reparable. Maximum economic etandardization of parte shall bsexercieed. Parte selection shal
21、l be made in the following orderof precedence:(1) Military Standard Parts ehall be selected inaccordance with MIL-STD-454, Requirement 22.(2) Nonstandard parts previously qualified forother programs.(3) Nonstandard parts.5Provided by IHSNot for ResaleNo reproduction or networking permitted without l
22、icense from IHS-,-,-MIL-R-81876B(AS)b. Nonstandard parts and nonestablished reliabilitymilitary standard parts shall be screened to the requirements ofthe most similar military standard or standard nonestablishedreliability part.3.2.1 Nonstandard Darts. Approval for the use ofnonstandard parts shall
23、 be in accordance with MIL-E-5400 andMIL-STD-965, Procedure 1.3.2.2 plicroelectronic device selection. Microelectronicdevices shall be selected and approved in accordance withMIL-STD-454, Requirement 64.3.2.3 Semiconductor selection. Semiconductors shall conformto MIL-S-19500 with preference to MIL-
24、STD-701 types. Only JAN orhigher quality devices shall be used.3.2.4 Modules. The electronic portions of the equipmentshall be functionally modularized in accordance withMIL-STD-2084 . Conformal coatings, encapsulant, embedments, orpotting material used with modular assemblies (containingintegrated
25、circuits and discrete parts) shall be removablewithout damage to the assembly.* 3.3 Pesi.an and construction. The equipment shall conformwith all applicable requirements of MIL-E-5400, MIL-STD-454 (lessRequirement 5), MIL-STD-275 , and MIL-P-5511o for design,construction and workmanship, and the man
26、ufacturing requirementsof WS-6536 for electrical soldering workmanship.3.3.1 Total weiqht. Weight of the equipment, excludingcables, shall be not greater than the following limits:a.b.c.d. m Weiqht(lb)Console-mounted RT-()/APX-100 (V) 8.4Rack-mounted RT-11570/APx-loo(v) 10.0RT-14710/APx-loo(v) 10.0C
27、ontrol C-()/APX-100(V) 1.7Mount MT-4811/APX-100(V) 1.03.3.2 Reliability. Unless otherwiee specified in thecontract or purchase order (see 6.2.1), the contractor shallconduct a reliability program using MIL-STD-785 . Task 104 ofMIL-STD-785 shall be implemented to establish and maintain aclosed-loop f
28、ailure reporting system. This system shall identifyfailure trends and patterns at all levels of assembly prior toacceptance of the hardware and shall also identify failure trendsrelated to field failures throughout the contract period. Thereliability program shall include provisions for assuring the
29、reliability of any portion of the eguipment supplied for use asa spare or repair part.6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-81876B(AS)3.3.2.1 9n ratb. have an operational range of O to 9,999 hours;c. shall not be resettable.3.3.2.6 s
30、afety. The eguipment safety requirements shall bein accordance with MIL-STD-454, Requirement 1, and MIL-STD-1472 .3.3.3 Cables and corm ectors. The equipment shall providefor the use of cables and connectors in accordance withMIL-E-5400.3.3.3.1 erconn ectina ca. The eguipment shall becapable of regu
31、ired operation using external wiring in accordancewith the applicable requirements of MIL-W-5088. The externalwiring shall be unshielded, except as necessary to meetinterference control requirements and provided that assembly ofcables and plugs can be accomplished easily. External cables andthat por
32、tion of connectors attached to the cables shall not besupplied as part of the eguipment.3.3.3.2. Conne cto . Connectors shall meet the environ-mental and maintenance tooling requirements of MIL-C-38999. Thedesign of connectors shall be such that improper assembly,mating or installation is impossible
33、. All external connectors,for new RT units or controls, shall be ecoop-proof, have cadmiumplating finish in accordance with QQ-P-416 (over a suitable7Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-81876B(AS)underplating) to withstand a 500 hou
34、r salt spray test, andprovide 360 degrees circumferential grounding techniques forgrounding prior to contact engagement. Non-scoop-proof connectorsused on previously designed RT or controls shall not be ,changed.3.3.4 Control Panels. All control panels shall conform tothe applicable requirements of
35、MIL-C-6781 (Type 1) to the extentspecified herein. If changed from a previously qualified design,the configuration of the panel shall be acceptable to theprocuring activity prior to first article testing.3.3.4.1 Watertiqhtness. That portion of the panel in frontof the control mounting surfaces shall
36、 be watertight when testedin accordance with Method 512.2 of MIL-STD-81O. Watercondensation may occur within the equipment; however, performanceshall not be degraded due to water condensation. All watercondensate shall be allowed to escape.a71 3.3.4.2 Control Danel liqhtinq. Console mounted units an
37、dremote control panels shall conform to MIL-P-7788,l-w,Class l-R,1-BW, or Air Force White( “ accordance withMIL-L-2?i60) , with either 5 or 28 volt c and dc) lampsinstalled. Separate input power pins shall be provided for thetwo lighting systems. Color of panel lighting shall be inaccordance with MI
38、L-C-25050. (See 3.5.1.6 and 3.5.2.7 foravailable color options.) ANVIS panels shall be illuminated inaccordance with MIL-L-85762 with glare resistant lens.3.3.5 Interchanqeabilitv. The eguipment shall meet theinterchangeability requirements 6f MIL-E-5400.3.3.6 Interference control. Generation of rad
39、io inter-ference by the equipment, and vulnerability of theradioequipment tointerference, shall be controlled within the combinedeeverest, limits of MIL-STD-461, Notices 3 and 4, tests CEO1,CE02, CE03, CE04, CE05, CE06, CSO1, CS02, CS03, CS04, CS06, RS02,RS03 , RE02 , and RE02.1 as modified below, a
40、nd when tested inaccordance with 4.3.11.a. w. Spurious signal rejection shall be asepecified in 3.4.22.6.b. . Frequency range and maximum field levelsshall be as follows:Eau ipmentFreauencv Ranae Bav RT(VIM Coneole RT(V/M)a. 10 RHz to 200 MHz 40 20b. 200 MHZ tO 450 MHZ 65 20c. 450 MHz to 1000 MHz 40
41、 20d. 1000 MHZ to 12 GHz 100 20e. 12 GHz to 40 GHz 0.5 0.58Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-81876B(AS)a71 c. C2ZQ.ft. lhe transmitter(key-down) shall be at least 100 dBspurious outputdown relativelevelto thefundamental for all ex
42、traneous and harmonic emissions less than1035 lmz and greater than the third harmonic, and shall be 80 dBand 100 dB down for the second and third harmonics, respectively.These limits shall apply throughout the range of 0.15 NHz to 11.0GHz , except at the fundamental, fo 5 percent, where theselimits
43、may be exceeded. Receiver spurious output at 1090 t 4MHz , with the eguipment in Standby or Normal but nottransmitting, shall be not greater than 15 dB microvolts/1 MHzand 36 dB microvolts/1 MHz at all other frequencies.3.3.6.1 . Insofar as practical,connector pin assignments shall be such that the
44、most susceptiblecircuits shall be on pins located at the connector center withless susceptible circuits graduated outward.interference sources and power wiring shall bethe connector periphery.Contacts carryinglocated on or near3.3.6.2 . All rack and consolemounted units shall be electrically grounde
45、d in accordance withMIL-C-6781. Bonding to an external ground plane shall be inaccordance with MI1.I-B-5087, Class R, requirements. Directcurrent (de) bonding resistance to chassie, for console andcontrol panel connectors and component, and resistance to theexternal ground plane through any mounting
46、 provisions, shall notexceed 2.5 milliohms.3.3.7 . When specified in the contract (see6.2.1), a Maintainability Program shall be conducted inaccordance with MIL-STD-470 (Task 104). Construction andpackaging, provisions for test points, and other maintainabilityparameters, shall be in accordance with
47、 MIL-STD-2084. Built-in-test performance shall be in accordance with 3.4.19.3.3.7.1 tv desi. Al1 electrical orelectronic circuite and parts shall be packaged on replaceableand reparable, plug-in modules. Circuit breakers, indicators,and other items which may logically be bolted and soldered, orother
48、wise more rigidly electrically and mechanically fastened tothe control housing or eguipment chassis shall not be consideredmodules. SRAS (Shop Replaceable Assemblies) shall be QRAs (QuickReplaceable Assemblies) as specified in MIL-STD-2076. SRAarrangement shall be such that access to any SRA does no
49、t reguireremoval of adjacent SRAS or parts other than access panels. Theuae of a special tool or tools for SRA removal is prohibited.All access panels and dust covers shall be retained by captivefasteners. Modules and connectors shall be keyed to preventimproper insertion. Fuses may be used in lieu of circuitbreakers.3.3.7.2 Ad3ustment s. No adjustment or alignment shall bereguired at the organizational
