1、MILITARY SPECIFICAICION %!his specification has been agproved by the Bureau of Naval Weapons, Department of We Navy. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- flIL-C-227b4C 58 -H 343q706 ISl587 T H MIL-c-227644 (WP) Couputer, Transponder KIT-/
2、PSEC Integrated Electronics CentraJ. M/ABQ-19 ( ) or AN/ASQ-( ) or AN/ASQ-88( ) 2, rnLICAI3rn DoCrnIIs 201 General - The following documents of the issue in effect on the Aircraft, instmation of Electronic Equipenti, Aircrafi, General Specification for Testing, Environmenca1, Aircraft Electronic Equ
3、ipment Interference Control Requirements, Aircraft Equipment Meter, Time Totaising Electronic and Electrical Equipment and Associated Repair Parte, Pre2aration for Delivery of fest Proceduresj Preproduction and Inspection, For Aircraft; Electronic Equipmt, Format for Nomenclature and Nameplates for
4、Aeronautical Electronic and Associated Equipment Integrated Electronics Centrai AN/ASQ-19 Reliability Aseurance for Production Acceptance of Avionic Equipment, General Specification for Computer, !%msducer, Altitude, Altitude Encoding, General Specification for Control, Transponder Set C-6280 (P) (
5、)/ApX 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-227biC 58 m 77777Ob 0353570 b MIL-SZE-704 Electric Pmr, Aircraft Characteristics and Utiization axE Federal FED-STD-595 .Colors 202 Availabiity of Documents: (i) men requesting specificat
6、ions; staridarcis, rawings, and publications refer to both title and nWpbero Copies of this specification asd applicable specifications required by contractors in connection with specific procurement functions my be obtained upon application to the Commanding Officer, Nava3 Supply Bpot, Code 109 580
7、1 Tabor Avenue, PhSlladelphia 20, Pennsylvania. 3. nEQUlXWEHTS 3.1 Parts and Materials - In the selection OP pads and materias, fulfiliuent of major desim objectives bhall.be the prime consideration. dohg the following shU govern: In BQ (1) Parbs and materials requirements shall conform to Gpecifica
8、tion MIL-E-5400. (2) Nomepairable subassenblies, as outlined b Specification m-E-gkXl, shaU be used when practicable, The genera2 size of the subassenbly sild the 89K1utt of circuity to be included there 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-
9、,-,-30202. Yci%aJ. Weich* - The Lota weight of the equipment, excluding cnlles, ahX. be a minimum consistant with good design and 0hall not exceed 2gPT ouniso 30202 Rdiability - 3.202,l erationa1 Stability - The equipment sha1 opera-te with fioum .tr$.thoirt the necessitr for readjustment of any con
10、trola which sa+isfacto performance, continuously or intermittently Tor a period of at least are inaccessible to the opemtor during normal lmeo life of 5000 hours with maBonable servicing and replacement of parts, requiring scheduled repLacement shdl be rJpecifitd by the contractore Q02O202 Operating
11、 Life - The equipment shal have total operating Parta 30 202 o 3 Reliability In Mean Time Between Failures (mF) - The aquipaaent shalu have a m of 325 houm of msn (operating) tinia between ialwca when teated an8 accepteil a outline8 mer the requiramtr of h.k.3. 302,204 totalizing meter; in accomlanc
12、e with Specification Ma;-M-77930 3*203 Cabling and Connectione - 3020361 3020302 Time IloteLizing Meter - The equipment shU contain time a Cables ad connectors - The equipnent shall provido for .t;he use of calbles and connectors in accordance with Specification MIEE-5bOo Interconnection Cabling - T
13、he equipment shaU be capable of satisfactory operation using externaJ. wiring in accordance with the apglicable requirements of Specific:.:I:I: :.: : : - t:.! . ._._-_- -._ . .- . . . t .- 1 . 30204 equipment interchengeability of Reordered Equipment - For reordered interchangeability shall exist be
14、tween units and a31 replaceable assemblies, subassemblies, and parts of a designated model of any previously manufactured equipment supplies or designated by the procuring activity. 302.5 interference Control - The generation of radio interference by the equipm:-,:t and the vulnerability of the equi
15、pment to radio interference shaU be contrqlled within the llmits of Specification MIGI-61811). . 3.206 Maintenance Provisions and Field Testing - Provisions for Specific test maintenance shall be as specified ir Specification MIL-E-5rio00 points and test facilities sha;ll be provided to the greatest
16、 extent practicable for ease of field testing and maintenance. 302.7 Nomenclature and Nameplates - Nomenclature assignment and nameplate appr0va;l for equizment identification shall be in accordance with Specification MIL-IB-LO 3.2.8 Standard Conditions - The following conditions shall be used to es
17、tablish normal performaace characteristics under standard conditions and for :. :. I . l:.: . . . 1 d i t ., . . . . . i , . _ . - -. _I_ . . . , ._I -.* . .- . , . .I i .I I . _L . . . . - 1 . . . . MIL-c-STD-704 having limits as specified “herein, specified amounts. c- The power required shall not
18、 exceed the (i) (2) AC Power (Single Phase) ll5V, Category “B-, 80 VA DC Power 28V, Category “B“, xx) ma. . 3.2,l.l shall be made for switched routing of i. 28 V M3 and U5 V AC power to external pin connections. The d-c is used to energize the We 4 caution light circuitry (para 3.3.12.3) and reply l
19、ight (para 3.3.12.2). trical loads requiring a maximum of 1.0 amperes. ceed 100 ma. each. er and shall be controlled in such manner that it is supplied when the equipment is glaced in any aperating condition. 3.3 Performance 3.301 General - Unless otherwise specified, the values set forth Switched D
20、C and AC Output - Jn addition to the above, provisions The a-c is necessary to supply elec- The two d-c loads WU net ex- Ilie a-c circuit shall be protected by an external circuit break- Power shsU.not .be supplie- gation Frequency - The interrogation frequency will ,.* . CI . . be 1030 + 0.2 mc, -
21、303.3 Receiver Characteristic8 . -. . 303.301 Receiver Frequency - The receiver shaU be aJusted by the supplier such that the center of the receiver bandpass (between points 6 db dam) is 10% - + 0,5 mc. conditions the frequency drift sheJ1 not exceed 1.5 ML 303030101. Receiver Frequency Drift - Unde
22、r ali specified service 3.30302 Minimum Triagering Level (EfpLl - Min- triggering level is a term applied to the mnFmum amplitude of the input RE interrogation pulses which just cause niii firing of the transmitter, measured at the receiver antenna receptacle under stasdard test conditions at any fr
23、equency to which the receiver is tuned shall be at least -77 dbm when the interrogation signa3 is supplied by a 50 ohm signal generator. The minimum triggering level shaJ1 not decreae to less than -74 dbm under any codJination of service conditions as specified in Specification MIL-E-5bO for Class I
24、I equipment . shall be included for renote triggering level selecticm as follows: The minFrmun triggering level ,303.303 Receiver Triggering Level Selection - (Sensitivity) ?ravisions (i) “Nornsi“ triggering level ajustable fmtu at least -69 dbm to -77 bm, (2) “W triggering level adjustable from at
25、least 12 to 25 db below that level of aJushe.n$ ia 3.3.3*3 (i). Random Triggering Rate or Squitter - The equipment shall 30303.4 not transmit mrc than 5 pulse trains per second averaged over one minute under the.following conditions: The receiver input is telmFnate in a 51 ohm resistive load. The tr
26、iggering level control is selected to “Nnnai.“ 7 . . 1 . . :.:;:;: . r p . I . . ,- I. . I . -.-._ I . - . . , . ,. . !:; L; . . . . . . i , . k . p : . . . . - “ . . l. .-. I *- . - . . . . . . . CI- . ._- - .-. “ -.-* ., *.-._-._.- _ ._-.-,- .-. . - - -. -.* . _-.-.- I . - -.- -c.- . . . . . . . .
27、 - . C.-.-.- . - - . “ -._.- . i I,., . -.e . I . . . i i . . . - -. . 3 . t: : :.: . # $ . . . $ -7. . *i . . . -I l. J i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-B ? . *.-. . MIL-C-22769C 58 qqqqqab 0151575 5 m. . . . . -. -.-.I . : : : I- .
28、 . t.:.:.:“I: . . . .- . .- -_ . . . . . . 4 . I - . i - ._._. - . . - . . - . . - - . - . .- 4 . -_ - . - -.-_- ._. . ._ -_I.- . -. - -. . -.-.-.-I _-.- -. .-. - _ -.- - -.d. . . . . . r.: .- . -.-. . -. . - . _- . m-c-22764C (wp) 3.30305 Receiver Banwidth - Under standard conditions, with inter- r
29、ogation pulse widths of0.4 to 009 usec. duration the receiver bandwidth shU be as follows: () At 6 db down - 8 - + i mc (2) At 60 tib down - not more than 50 mc 303030501 Receiver Bmdvidth Drift - The overall receiver bandwidth under all coninationb of Bervice conditions shall not vary more than- -
30、+ 3 mc in overall bandwith at 6 db down fmm maximum response, However, in no case shall the ovedi. bmdwisth be less than 7 mc at points 6 db down from the maximum response, - Under standard conditions the I-F mid-frequency from a maximum response shall be 60 + 1.5 mc. - 3.3.307 Rejection of Vadesire
31、d Simals I-F Reection - RF input signals at the I-F amplifier fre- db above that of the desired signe2 shall in -55 303.30 701 quency having anrplitudes up to no way degrade the specified performance of the equipment. 30 3.30702 Image Rejection - FF input si;r-aLs at the receiver image frequency hav
32、ing an amplitude ap to quencies lower than 1010 and higher than 1050 megacycles per second with the ex- ception of the image frequencies which shall be at least 60 db below the response at the desired frequency. all service conditions in the presence of CW, MS, rasdom-spaced pulses and regularly-spa
33、ced puises of any apacing including radar interference as folows: 303030705 RF Rejection - With the receiver tuned to 1030 mcg per second, 3.3.3.7.4 Ant i- Ja Characteristics - The equipment shall operate under (ir if the interrogating cignaJ. to which the equipment should reply is between 10 and 50
34、 db above the mhmum triggering levei, and any interferhg signal. 10 db down fmm the interrogating signal sheJ1 not reduce the nWer of valid replies by more than 50%. 8 t Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-7 NIL-C-LIC 58 m 7777906 0353576
35、 7 m (2) For test purposes, the AMI;w Jamming signa be simlated using a signal. generator which can be modu- lated 309 by a 1ooo cpe sine wave; raildom space puises shall not exceed a tota of loo0 pps; regularly spaced puises sha not exceed 400 3260 (3) Mode Sync Jamming - Mode 4 operation will requ
36、ire the use of anti-interference interrogation (AII) tme signaJ.s, Recognition of this type of interrogation for sync repetition interference reuction wi be accompished in tho rcceive+-trsesmitter. nition sh8J.l be accomplished by sensing the lack of any puise in the me 4 interrogation for intervals
37、 of a minimum of 4usec(4.5 2 0.5 mec)* rogation containing such gaps with neither an A1 nor information puise shaJ1 cause the generation of a We 4 computer reset trigger, cause texmination of the Modes 1, 2, 3/A and C, suppres- sion within 2 Usec after its receipt,. This recog- i1 Inter- ALSO, this
38、trigger shall (4) If the interfering signdl consiste of randomly spaced puises only and the interrogathg signed- is a We 1, 2, 3/A or C interrogaticm that is 10 ab above the Fnterferbg si;ndLJ the equipment sha31 reply to at least 90 sescent of the intomgations where the ran4onii.y spaced pulses are
39、 not recognized as normal or side lobe interrogationso - The equlpmt Wall. not be a,g-.fca%ion of an B-F signa of ew freeuency of my +litude up to I 2 Volt md of any tme of modulation apgliea an8 measured at the antenna terminal of the Receiver-Transmitter. “$“ by 303030705 303030706 Puise Width Dis
40、crimhation - Mes 1, 2, 3/A and C - Received signa3.s between minitmUn triggering level and 6 db above this level whose duration ZB fQ asee,- Emaia. not -catis8 Qlcr trail6p6nder -te 3n%late reply or uppres- sion acticm. With the excep-bion of puises with auplitude variations approximately a nomal in
41、terrogation pulse pair condition, any pulse or pair of pulses each of a dura- tion grceAm .t;han 1.5 uBec sha3.l not cause the transpondftr to initiate reply or sqppression action, minimwn triggering level and 6 db above this level whose durati-oli is less than 0.2 usec, shaXl. not cause dihe transp
42、onder to initiate reply or sqppression action, 3.3.3.7.7 Pulse Width Discrimination Mode 4 - Received signals betveer; 3.4.3.8 Autoniatic Overload Control (AOC) - -!Che Abc shall operate to reduce the =tt;pfmerng level to ag extent which will prevent the transmitter duty cycle from being excive in a
43、3.l modes of operation. When.apemting within a 0.01 duty factor, the .triggering level ahaLi not be reduced by more than 3 db above MPL. When operating at a duty factor exceeding 0012, the triggering level shall be reduced at least 30 b above MPL. 9 i ry- Provided by IHSNot for ResaleNo reproduction
44、 or networking permitted without license from IHS-,-,-Myrc-227m (WP) 303. QeQoL Roaly Rate Limitituy - !Chis control shU limit the number of gcnera%ed reply trains In Mes 1, 2, YA, and C without regard to the number of pulwxa in each reply, or whether replies arc nomal, I/P or Emergency. Izvcl reduc
45、tion hall be gradual to prevent maker interrogations from denying imairpoiider service to stmnger interrogations as a result of over-intermgation. bBximum xlegry mtc shall, not exceed W$J of the rate at which reduction first begine 1% %ho intomgation signd. ia increased to 50 db above minimum trigge
46、ring love2, Max;lmum reply rate shall be adjustable from 500 to 3oO per second, Triggee 3.3.3.9 30% 3.9.1 Suppres e ion Characteristic 8 Recoveru Time, Internal Suppression - The sensitivity of the equipment when aperating on Modes 1, 2, 3/A, or C shall be reduced to at least db below the “Nomal“ mi
47、nj.n.um triggering level for 30 microscconds after the first truiamitted pulse and shall runain at least 30 db below the “Nomal“ minimum triggering level for returnm to within 3 db of “Normal“ mliilmum triggering level within a period of 75 to 125 microseconds aner the last reply puLse transmitted,
48、The sensitivity of the equipment Ithen act to transmit Emergency replies shall be reduced at learrt db below the “NonnaL“ mininarm triggering level for 100 ndcroseconds and shal return to within 3 db of the nonna;l triggering level within a period of l to 125 microseconds after the last reply-pulse transmitted. Action of the internal cirouit that produces this deeensitlzed period shall produc
