1、MIL-E-852 58 7777906 OL74108 b m MIL-E-85288(AS) 9 March 1979 MILITARY SPECIFICATION Tactical Navigation Set AN/ASN-123, Ground Support Equipment. Electronic Systens Test Set, AN/ASM-614 This Specification is approved for use by the Naval Air Systems Command, Department of the Navy and is available
2、for use of all departments and agencies of the Department of Defense. 1. SCOPE 1.1 Scope - The Test Set covered by this specification shall be for intermediate (shop) use and shall perform end-to-end test- ing and fault isolation of all individual WRAs (Weapon Replaceable Assembly) of the TACNAV Set
3、 by simulating stimuli experienced in the operational environment and comparing responses to predetermined stored data. Fault isolation will be to the SRA (Shop Replaceable Assembly) level. 1.2 Classification - This Test Set is a type II (new design) class 4, style D of MIL-T-28800. The equipment co
4、vered by this specification shall consist of the following items: Nomenclature Reference Paragraph Test Set, AN/ASM-614. Con- sisting of the following: Test Unit, AN/ASM-614 3.6.1 Beneficial comments (recommendations, additions, deletions) and pertinent data which may be of use in improving this doc
5、ument should be addressed to: Engineering Specifications and Standards Department (Code 93), Naval Air Engineering Center, Lakehurst, NJ 08733, by using the self-addressed Standardization Document Improve- ment Proposal (DD Form 1426) appearing at the erld of this document or by letter. 1 Provided b
6、y IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SPECIFICATIONS Military (cont d) MIL-T-28800 Test Equipment for Use with Electrical and Electronic Equipment, Gene
7、ral Specification for STANDARDS Military MIL-STD-129 MIL-STD-143 MIL-STD-454 MIL-STD-461 MIL-STD-462 MIL-STD-471 MIL-STD-781 MIL-STD-794 MIL-STD-810 MIL-STD-965 MIL-STD-1399/103 MIL-STD-1472 MS 1 7 322 NAVAIR 16-1-525 Marking for Shipment and Storage Standards and Specifications, Order of Precedence
8、 for the selection of Standard General Requirements for Electronic Equipment Electromagnetic Interference Characteristics Requirements for Equipment Electromagnetic Interference Characteristics, Measurement of Maintainability Demonstration Reliability Tests, Exponential Distribution Parts and Equipm
9、ent, Procedures for Packing and Packaging of Environmental Test Methods Parts Control Program Interface Standard for Shipboard Systems, Section 103 Human Engineering Design Criteria for Military Systems, Equipment and Facilities Meter, Time Totalizing, Miniature, Digital 115 Volt, 400 Hz Avionics Pr
10、eferred Common Ground Support Equipment Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-85288 (AS) (Copies of specifications, standards, drawings and publications required by contractors in connection with specific procurement func- tions shoul
11、d be obtained from the procuring activity or as directed by the contracting officer.) 3. REQUIREMENTS 3.1 Selection of Parts and Materials. Selection of parts and materials shall be in accordance with MIL-STD-965. Preferred standard parts and materials are items conforming to documents listed herein
12、, and items covered by documents specified as standard in MIL-T-28800. Parts and materials shall be procured from QPL sources when they exist, Nonstandard parts and materials must be equivalent to or better than similar standard parts and materials. When the approved parts list fails to provide an a
13、pplicable specification or standard, the contractor shall. use other established specifications or standards in the order of precedence set forth in MIL-STD-143. Parts and materials selected from other than those specified in the approved parts list are not standard. Approval must be obtained prior
14、to their use in test sets. Each vendor source for a nonstandard part or material, requires approval. When a non-standard part is used where a suitable standard part exists, the contractor shall reference the standard part on the drawing, parts lists, or data package, and the installation shall provi
15、de for replace- ment with the standard part. 3.1.1 Requests for approval of nonstandard parts. The data to be submitted with the request for approval of nonstandard parts shall be in accordance with the terms of the contract. 3.1.2 Commercial utility parts Commercial utility hard- ware parts, such a
16、s screws, bolts, nuts, cotter pins, etc., may be used, provided they have suitable properties and are replaceable by standard parts without alteration. 3.2 Design and Construction - The Test Set shall be in accordance with the provisions of MIL-T-28800, Type II (new design), Class 4, Style D. It sha
17、ll be of ruggedized design and construction. 3.2:l Total Weight - The total weight of the Test Unit shall be a minimum consistent with good design and shall not exceed 100 pounds. 3.2.2 Modules, Maintenance - The Test Set shall be divided into maintenance modules as specified in MIL-T-28800. Modules
18、 shall normally be considered repairable. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-85288 58 m 7777706 0374332 8 m MIL-E-85288(AS) 3.2.3 Time Totalizing Meter - The Test Unit shall contain a,time totalizing meter conforming to MS17322.
19、A time .totalizing meter shall be included in the following units: Unit Type of Meter - Test Unit MS17322 3.2.4 Cables and Connectors - The Test Unit shall provide for the use of cables and connectors in accordance with MIL-T-28800, Type II equipment. All connectors shall be mounted along the side o
20、r lower edge of the front panel and in no case shall their location be such that the connecting cables will interfere with the operating con- trols. 3.2.4.1 Cabling - The Test Unit cabling shall be compatible with the equipment to be tested. 3.2.4.2 External Connectors - The external connectors shal
21、l be as specified in the contract. 3.2.5. Controls 3.2.5.1 Power - The power control shall be the Test Set ON/OFF power switch as specified in the contract. 3.2.5.2 Program Control - The program control shall provide for a Go, No-Go, Continue and Restart operation as specified in the contract. 3.2.5
22、.3 Data Entry - The data entry controls shall contain provisions for a O through 9, “Clear“, and Enter“. 3.2.6 Human Engineering - Human engineering shall be in accordance with MIL-STD-1472. 3.3 Availability - The availability shall be a minimum of 99 percent when calculated using the results of the
23、 Reliability and Maintainability Analysis of paragraphs 3.3.1 and 3.3.2 of this specifi- cation as follows: e Availability = e + Mct Where : 8 is the observed Mean-Time-Between-Failure (MTBF) equal to the total operating time of the equipment divided by the number of failures, as defined in MIL-STD-
24、781; 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- is equal to the Mean Corrective maintenance downtime, MC, add : as defined in MIL-STD-471. 3.3.1 Reliability - When specified in the contract a reliability program shall be conducted to ensure a
25、 design oriented reliability effort consisting of the following, and data shall be in accordance with.UD1-R-2113 (See 6.4.15) a. b. C. d. e. - 1 An audit of the proposed design including the application of parts verified by a Reliability Prediction Study. Failure analysis of all test failures with a
26、ppropriate recommendations for corrective actions to insure compli- ance with the reliability requirements. Testing subsequent to the test producing a failure shall be monitored to insure the effectiveness of the correc- tive actions taken: Monthly status reports with failure summaries shall be prep
27、ared highlighting problem status and resolution, The Reliability and Maintainability Program Plan shall include details for the implementation of the reliability program. 3.3.1.1 Operating Stability - The Test Unit shall be design- ed to operate as specified for not less than 2000 hours or six month
28、s, whichever comes first, without scheduled maintenance, realignment, or adjustment of any control not readily accessible to the operator during normal operation with the exception of magnetic head cleaning and air filters. 3.3.1.2 Operating Life - The Test Unit shall have a minimum total operating
29、life of 25,000 hours. Parts requiring scheduled replace- ment due to wear during the life of the equipment, and the wear out life of. such parts, shall be determined by the contractor and submitted to the procuring activity. 3.3.1.3 Reliability in Mean-Time-Between-Failure (MTBF) -The Test Unit shal
30、l have a specified MTBF of 500 hours. Failures shall be as defined in paragraph 3.3.2, 3.3.2 Maintainability - The contractor shall conduct a maintainability program in accordance with MIL-T-28800 with the excep- tion that fault isolation shall be to the SRA level only. 6 Provided by IHSNot for Resa
31、leNo reproduction or networking permitted without license from IHS-,-,-flIL-E-852B8 5B 797770b 0174114 1 MIL-E-85288(AS) Failures of the Test Unit shall be divided into the following categor- ies : I Faults which prevent program execution. II Computer faults which may be isolated with commercially s
32、upplied diagnostic programs. III Faults in contractor designed assemblies and commercial units which are controlled by the contractor designed interface. Category I faults shall be isolated using applicable procedures and common ground support equipment existing in I-level maintenance shops. Categor
33、y II faults shall be automatically isolated to a functional area within the computer with the commercially supplied diagnostic programs. Category III Faults shall be automatically isolated to the SRA or sub- SRA as defined in MIL-T-28800 or to the end item of commercial equip- ment. 3.3.2.1 Maintena
34、nce Times - The Test Unit, including any built-in provisions, shall be designed to meet the following quantit- ative maintainability requirements for corrective maintenance at the intermediate level. - a. b. Mean time to repair, Met 45 minutes. 90 minutes (at the 90th Maximum time to repair, Mmax ct
35、 percentile). 3.3.2.2 Maintenance Manhours Per Maintenance Action - The total maintenance manhours per maintenance action shall not exceed 2.25 hours at the intermediate level when conducted in accordance with 4.3.2.1 of this specification. 3.3.3 Probability of Successful Performance of Specified Te
36、st (Compatibility) - The probability of successful performance during a complete test shall be a minimum of 93 percent. The probability of successful performance of a complete test of the avionic equipment to be tested by this support equipment shall include: (a) not detecting a failure in the avion
37、ic equipment to be tested (b) indicating a nonexistent failure in the avionic equipment to be tested 7 - -_ - - - i -u - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-(c) the probability of causing a failure in the avionic equipment to be tested (d
38、) the probability that a failure in the avionic equipment under test will cause a failure in the support equipment (except for a protec- tive device). Electromagnetic Compatibility The unit shall meet the requirements of MIL-STD-461 for class IC equipment, (See 4.5.1). CAUT I ON The requirements of
39、this specification are substantially in excess of the requirements of RS03 of MIL-STD-461. It is therefore considered mandatory that these requirements are fully understood before establish- ing basic designs. Maintenance Provisions and Field Testing - The Test Unit shall be modularized and all cont
40、ractor designed electronics shall be packaged into discrete replaceable modules. Adequate test points shall be provided at a connector in accordance with MIL-T-28800. 3.3.5.1 Standard Test Equipment - It shall be possible to isolate faults in the Test Set using only the self-test features and test e
41、quipment normally available in intermediate level avionics shops. (General purpose test equipment selected from NAVAIR 16-1-525.) Nomenclature and Nameplates - Nomenclature assign- ment and nameplate approval for Test Set identification shall be in accordance with MIL-N-18307. Service Conditions Ser
42、vice conditions (environmen- tal) shall be in accordance with MIL-T-28800, Type II, Class 4, Style D with excep.tions as herein specified. 3.3.7.1 3.3.7.2 Shock, Mechanical (Nonoperational) - The Test Unit shall meet the requirements of 4.5.2 after being tested in accordance with Paragraph 4.4.1 oft
43、his specification. Altitude - O - 10,000 ft. operating. 3.3.7.3 Vibration The Test Unit shall meet performance requirements when subjected to a 2 g vibration level 5-55 Hz for 45 minutes while operating out of the transit case. 3.3.7.4 Humidity - The humidity requirement of MIL-T-28800 does not appl
44、y. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-28800 does not apply. I MIL-T-28800 does not apply. 3.3.7.7 Temperature Altitude - 4OoC, O to 10,000 feet. 3.3.7.8 Bench Handling - The Test Unit shall meet perform- ance requirements after b
45、eing subjected to the bench handling test in accordance with MIL-STD-810. Method 516 Procedure V. conform to MIL-T-28800. 3.3.8 Standard Conditions - The following conditions shall be used to establish normal performance characteristics under standard conditions and for making laboratory bench tests
46、. Temperature: 25OC I5OC Altitude: O to 4,000 ft. Vibration: None Humid i ty : Up to 75% without condensation. Input Power Voltage 115V k lo%, 3 phase, WYE 400 Hz+5% and +28V DC k 10%. 3.4 TransDortabilitv - The Test Set shall be air transnort- 3.5.1 Test Canabilities - The Test Unit shall oerform c
47、omplete end-to-end confidence testing (certified RFI) and automatic fault isolation to the SRA level for each WA of the TACNAV Set (Naviga- tional Computer CP-1282/ASN-123, Computer Control C-10155/ASN-123, Control-Indicator C-10156/ASN-123, and Digital Display Indicator IP-12631 ASN-123). 3.5.1.1 E
48、xecutive Software System - The executive software system- provides interactive control of the Test Unit by means of the keyboard and Test Unit display. It shall control: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo
49、reproduction or networking permitted without license from IHS-,-,-MIL-E-852 58 7777706 OL7q118 9 = MIL-E-85288 (AS) . 3.5.2 Stimuli and Response - The Test Unit shall provide sufficient UOT simulation of stimuli experienced in the opera- tional environment and will compare “UT responses to predetermined test criteria to establish RFI condition or defective SRA. 3.5.3 T
