1、MIL-1-81036 58 9977706 OLb777Li 7 = MIL-I-81036(WP) 15 JANUARY 1966 MILITARY SPECIFICATION INTEGRATED ELECTRONIC CENTRAL Thia specifieatzon has been approved by the Btweau of Naval Weapons, Depurtme.ltt of the Navy. 1. SCOPE 1.1 Scope. The Electronic Central covered by this specification shall provi
2、de communi- cation, navigation and identification f acili- ties required in naval aircraft to carry out military missions. 1.2 Classification. This central shall consist of the items ,listed in 6.9. 1.3 Design Data. No data is required by thia specification (other than reports accom- panying ,sample
3、s submitted for testing) or by applicable documents, unless specified in the contract or order (See paragraph 6.7). 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in 6.11, of the issue in effect on the date of invitation for bids, form a part of this specification to the extent specified
4、herein: (see 6.6(4). 3. REQUIREMENTS 3.1 Preproduction. This specification makes provision for preproduction testing. 3.2 Parts and Materials. In the selection of parta and materials, fulfillment of major design objectives shall be the prime em- sideration. In so doing the following shall govern : (
5、1) Microelectronic items shall conform to requirements specified herein. (2) Other parts and materials require- menix shall conform to Specifica- tion MIL-E-5400. (3) Nonrepairable subassemblies, as outlined in Specification MIL-E- 5400, shall be used when practi- cable. The general size of the sub-
6、 assembly and the amount of cir- cuitiy to be included therein shall be approved by the procuring activity. Nonrepairable subassem- blies must be reliable. (See 6.4). (4). When previously produced models of this central did not use iionre- pairable subassemblies, the de- sign shall not be changed to
7、 employ nonrepairable assemblies without the approval of the pro- curing activity. 3.2.1 Nons.3andail.cl Parts und Materials Approval. Approval for the use of nonstand- ard parts and materials shall be obtained as outlined in Specification MIL-E-5400. / Provided by IHSNot for ResaleNo reproduction o
8、r networking permitted without license from IHS-,-,- flIL-I-8L036 58 7777706 OLb7775 7 9 MIL-1-81036 (WP) 3.2.2 Electron Devices. Electron tubes, transistors and diodes shall be chosen and applied as outlined in Specification MILE 4682, 3.2.3 Mcroelectronc Modular Assembles. When used, Microelectron
9、ic Modular Assem- blies shall be described by a contraotor pro- cu,rement specification and must be approved by the procuring agency. Microelectronic Modular Assemblies (Microelectronic Cir- cuits) (MICS) shall be contained within Maintenance Modules (for example, on printed circuit cards). The choi
10、ce of Micro- electronic Modular Assemblies shall be based on at Jeast two sources of eupply, in accord- ance with WR98. 3.2.4 Modular Constructon. The use of modular space assignment and construction of easily disconnected plug-in subunits or component assemblies shall be in accordance with Specific
11、ation MILE19600 where pos- sible except that for the KY-532A/ASQ and RT-736/ASQ-88 ease of maintenance shall have primary consideration. The following considerations shall apply where practicable. (1) Modules shall be of standardized form and dimensions to facilitate use in other equipment of differ
12、- ent over-all configuration and shall be designed for maximum practical effectiveness of cooling air supplied by or to the equip- ment. (2) Each module shall contain the cir- cuiltry of one or more functions of the central to facilitate testing and repair. The central shall be divided into as many
13、modular units as is electrically and physi- cally practical in keeping with efficient space utilization, equip- ment performance and reliability. (3) It shall be possible to operate the central with one or more modules removed from the chassis but connected to it electrically by means of one or more
14、 extension cable assemblies and by use of mechanical extenders when re- quired. (4) It shall be possible to replace any module with other modules of the same type and obtain specified equipment performance with only minor readjustmentrJ. 3.3 Design and Construction. The central shall conform with al
15、l the applicable require- ments of Specification MIL-E-5400 for de- sign, construotion and workmanship, except as otherwise specified herein. 3.3.1 Total Wdght. The total weight of the central excluding cables shall be a m,inimum consistent with good design and shall not exceed 227.5 pounds. 3.3.2 R
16、elia bilty . 3.3.2.1 Operatonal Stability. .The central shall operate with satisfactory performance, continuously or intermitkently for a period of ab least 50 hours without the necessity for readjustment of controls which are inaccessi- ble to the operhr during normal use. 3.3.2.2 Operating Life. T
17、he central shall have total operating life of 5000 hours with reasonable servicing and replacement of parts. Parts requiring scheduled replacement shall be specified by the contractor. 3.3.2.3 Time Totalizing Meter. A time totalizing meter conforming, as applicable, with specification MIL-M-7793 and
18、 MS17322 shall be inoluded in the following: RT-546/ASQ-19 RT-736/ASQ-88 KY-532A/ASQ KY-531/ASQ-88 AM-2349/ASQ-19 3.3.2.4 Reliabilitlj in Mean Tme Between Falures (MTBF). The central shall have 50 hours of mean (operating) time between Provided by IHSNot for ResaleNo reproduction or networking permi
19、tted without license from IHS-,-,-MIL-I-8L03b 58 7999906 0169776 O WF MIL-81036 (WB) failures when tested and accepted as outlined under the requirements of 4.4.3. For individ- ual items when purchased separately the re- quirements shall be as shown in 6.9. changeabiKty shall exist between units and
20、 all replaceable assemblies, subassemblies, and parts of a designated model of any previously manufactured equipment, supplied or desig- nated by $he procuring activity. 3.3.3 Cabling and Connections. 3.3.3.1 CabZes and Connectors. The central shall provide for the use of cables and con- nectors in
21、accordance with Speoification MIL-E-5400. 3.3.3.2 Interconnection Cabling. The cen- tral shall be capable of satisfactory operating using external wiring in accordance with the applicable requirements of Specification MIL-W-5088. The external wining ahaP be unshielded, except that a minimum number o
22、f the individual wires may be shielded when demonstrated as necessary to meet interfer- ence control requirements and provided the assembly of the cable to its plugs may be easily accomplished. External cables and that portion of the connectors attached to the cables shall not be supplied as part of
23、 the central. . 3.3.4 Control Panels. All rack or console mounted control panels shall conform to the applicable requirements of Specification MIL-(3-6781. The configuration of all control panels must be approved by the procuring activity prior to preproduction twting. 3.3.5 Interchangeability of Re
24、ordered Equipment. For reordered equipment inter- 3.3.6 Interference Control. The generation of radio interference by the central and the vulnerability of the central to radio inter- ference shall be controlled with,in the limits of Specifimtion MIL-1-6181 except as speci- fied below and in the indi
25、vidual equipment specification. 3.3.6.1 Short Duration. Short Duration in- tererence shall not exceed the limits of Figures 3 through 5. 3.3.7 Maintemnce Provisions and Field Testing. Provisions for maintenance shall be as specified in Specification MIL-E-5400. Speoific test poi.nnts and test facili
26、ties shall be provided to the greatest extent practicable for ease of field testing and maintenance. 3.3.8 Nomenclature and Nameplates. No- menclature assignment and nameplate ap- proval for equipment identi,fication shall be in accordance wilth Specification MIL-N- 18307. 3.3.9 Standard Conditions.
27、 The following conditions shall be used to establish normal performance characteristics under standard conditions and for making laboratory bench tests. Temperat Ure Altitude Normal ground Vibration None Humidity Input power Voltage Room ambient (25C o 5C) Room ambient up to 90% relative humidity 11
28、5 fi 1.0 01% 3N%- 4.4.3.1 Test Level, The test Level shall be Level G of MIL-STD-781. 4.4.3.2 Accept-Reject Criteria. Figure III of MIL-STD-781 shall be used to determine the accepbreject criteria. 4.4.3.3 Length of Heat portion of Cycle, After stabilization at the high temperature limit required by
29、 the test level, the equip ment shall be operated 4 hours during each cycle, 4.4.3.4 Perf ormance Characteristics to be Measuqeed. (1) UHF Cinnmunkatimts - RT-546A Charactdstic Receiver Sensitivitg Audio Capability RF Power Output. Modulation Capability (input to Tone Modulation Capability Side Tone
30、 Level clipping) Specification Requirement Standard 6 uv/lO db Service 20 uv/lO db Standard not less than 260 mw Service not less than 62.5 mw Standard not less than 16 w Service not less than 9 w Not less than 70% NLT 70%. Standard not less than 260 mw - Acceptance Reqitiremat (if lower) 20 uv/l db
31、 Not less than 62.6 mw Not less than 9 w Not less than 70% NLT 70% There shall be side tone output CharacteMtio Receiver Sensitivity Audio Capability Service not lesS.than 76 mw (2) Receiver/ADF/Pozuer Supply - AM-,2349 and AS-$09 Specification Reauk-ement Acceptance Requirenimt (if lower) - Power S
32、upply Voltages 430 VDC 276 VDC 250 VDG 130 VDC 140 VDC -180 VDC Standard 6 uv/lO db Service 18 uv/lO db Standard not less than 260 mw -Service not less than 62.6 mw 370 to 506 241 to 302 218 to 278 114 to 142 137 to 143 -148 to -207 18 uv/lO db Not less than 62.6 mw 360 to 616 230 to 310 210 to 290
33、135 to 146 110 to 145 -140 to -215 8 i- * Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-1-81036 58 779770b 0169782 b mF MILI-P-81036 ( Wr) ADP RF Operational Test Not more than 6 sec. for antenna to assume new heading 180“ removed from previous
34、 heading (3) Intercommunication Sets - LS-460 Not niore than 12 sec. Acceptance Specification Requirement Characteristic Requirement (if Iewer) Power Output Standard not less than 276 mw Not less than 137 niw (4) TACAN-KY-531 and RT-786 Characteristic Specificatim Requirement Distance Accuracy and S
35、ensitivity Standard i- (0.2 mi + 0.1%) for Sig levels from -117 to -30 dbw Service f (0.3 mi + .I%) at -114 dbw to -30 dbw from -113 to -107 dbw and -35 to -30 dbw f 1“ with signal leve1 from -107 to -36 dbw Service f2.6“ with Sig levels from -110 to -104 dbw and -35 to -30 dbw f 1.6“ with signal le
36、vels from -104 to -36 dbw Bearing Accuracy and Sensitivity Standard f 2“ with Sig levels Interrogation Coding T/R Identification 12 $I 0.5 usec Standard not less than 50 mw audio for Sig levels from -117 to -30 dbw; 30db S/N ratio from -114 to -30 dbw. Service not less than 50 mw audio for signal le
37、vels from -114 to -30 dbw; 30 db S/N ratio from -111 to -30 dbw. Power Output T/R Standard not less than 30 dbw Service not less than 27 dbw A/A Standard not less than 27 dbw Service not less than 24 dbw Acceptame Requirement (if lower) k (0.3 mi + 0.1%) for sig levels from -114 to -30 dbw with 40%
38、modulation (20% 15 cycles, 20% 135 cycles) f 2.6“ with Sig levels from -110 to -30 dbw with 40% moduia- tion (20% 16 cycles, 20% 136 cycles) 12 2 0.6 usec Not less than 50 mw audio with 30 db S/N ratio for Sig level from -111 to -30 dbw Not less than 27 dbw Not less than 24 dbw Not less than 24 dbw
39、(6) IFF/Cder- KY-532A/ASQ IFF/Coder performance characteristics to be measured on the KY-632A shall be in accordance with specifi- cation MILC-22764. 4.4.3.5 Fai1zc.I.e Criteiia. Performance re- quirements below those specified herein (4.4.3.4) shall constitute one failure unless otherwise specified
40、 in the approved detailed test procedures (see 4.6). If subsequent anal- ysis reveals that several parts have deterio- rated, each shall be counted a failure, unless one caused other parts to fail. 4.4.3.6 Determination of Compliance. Com- pliance shall be determined in accordance -. with Figure 13
41、of Specification MIL-R-23094 (see paragraph 3.19 therein). 4.4.4 Special Tests. Special tests shall be conducted on a quahtity of equipments for purpose of checking the effect of any design or material change on the performance of the equipment and to assure adequate quality control. The equipments
42、selected for special tests may be selected from equipments previously subjected to the sampling - test. T. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-L03b 58 W 777770b OLb7783 8 MIL-1-81036 (WP) 4.4.4.1 Special Tests Schedule. Selection
43、of individual equipments and centrals for spe- cial tests shall be made as follows: (1) On an early equipment after an engineering or material change. (2) Whenever failure reports or other information indicate additional equipments should be tested. (This will be determined by the procuring activity
44、.) 4.4.4.2 Scope of Tests. Special tests shall consist of such tests as approved by the pro- curing activity. Test procedures previously approved for the preproduction tests shall be used where applicable. When not applicable, the contractor shall prepare a test procedure and submit it to the procur
45、ing activity for approval prior to conducting the tests. 4.4.5 Equipment Failure. Should a failure occur during either the sampling, reliability assurance or special tests, the following action shall be taken: (1) Determine the cause of failure. (2) Determine if the failure is an iso- lated case or
46、design defect. (3) Submit to the procuring activity proposed corrective action in- tended to reduce the possibility of the same failure) occurring in fuure tests. (4) Where practical, include a test in the individual test to check all equipment for this requirement until reasonable assurance is ob-
47、tained that the defect has been satisfactorily corrected. 4.5 Life Test. The contractor shall furnish all samples and shall be responsible for ac- complishing the life test. The test shall be of 500-hours duration and shall be conducted on equipments that have passed the individ- ual test. The life
48、test shall be performed under the conditions specified in 4.5.1. The life test sample shall be selected by the gov- ernment inspector in accordance with the following. (Equipments which have success- fully passed the Initial Production Test, Sampling Testa, Reliability Tests, or Special Tests may be
49、 selected for life tests.) When reliability tests are conducted, the life test may be omitted, during the reliability tests, a quantity of equipments equal to, or more than, that listed below receive at least 500 hours each of test time. Quantity of equipments offered for acceptance Quantity to be selected for life test First 26 1 Next 176 1 Next 300 1 1 for each additional 500 or fraction thereof 4.5.1 Test Conditions. The central life test shall be conducted under the following
