1、MIL-T-81675A 58 M 7777906 0146468 b M . L I Superseding MJL-T-81095(AS) 1 Septe:mber 1972 MILITARY SPECIFICATION TRANSMITTING SET, TELEMETRIC DATA, AN/AKT-22(V) (U) This specification has been approved by the Naval Air Systems Command, Department of tho Navy l. SCOPE 1.1 (v) Scope - The equipment co
2、vered by this specification is an airborne ASW-signal transmitting set which provides a complete data link between acoustic signal acquisition sonobuoys and a shipboard data processing system for both sonic and sonar data. The AN/AKT-22(V) is a variable configuration device for multiple airframe use
3、. Dy addition or deletion of nodules the output power, multiplex format and/or channel capacily 1nay be changed to meet the requirements of the specific airframe. *L2 (u) Classification - The equipment covered by this specification shall consist of the followiilg items. . Type Designation Applicable
4、 Paragraph Transmitter-Multiplexer T-l220/AKT-Z2(V) 3.5.1 AN/AKT-Z2 (V)1 Transmitter-Multiplexer T-1220A;/AKT-22 (V) 3.5.2 AN/AKT-22 (392 Transmitter-Multiplexer T-1295/AKT-220 3.5.3 AN/AKT-22 073 Transmitter-Multiplexer T-1220B/AKT-Z2(V) 3.5.4 AN/AKT-22 04 Antenna Coupler CU-l497/ARR 3.5.5 AN/AKT-2
5、201 Antenna Coupler CU-2069/ARR 3.6.6 AN/AKT-22(Y)l, 2. 3. or 4 Antenna AS-2744/-4KT-22 (V) 3.5.7 AN/AKT-2201 or 2 Antenna AS-3033/AKT-22 (V) 3.5.8 AN/AKT-22 (V) 3, or 4 Actuator, Linear Electro-Mechanical 3.5.9 AN/AKT-22 03. Or 4 -Controi-Iadicator C-898.8/AKT-22 (V) 3.5. lo AN/AKT-22fV)l or 3 -CQn
6、trol-Indicator G-8688A/AKTc22.(Vf 3.5:Il ANJAKT-22 02- or 4 Amplifier AM-G695/AKT-22 (V) 3.5.12 AN/AKT-ZZ(V)Z or 4 . TG-229/AKT-22 0 COWflITf OR RECDATIU45 WICH r(4Y E OF USE IN 1WfKMING THIS CCCWT MAY 6E SENT TO THE PREPPRIN; ACTlVITY WEN A SELF-PWRESSEO STPNDPRDIZATIM m LETTER dDORESSED TO ?HE CW4
7、IWC AtflVIlY. IWROMHEKT PROPOSAL CRI Fm 14261 APPEARS AT ?H EM, OF MIS mm, OR BY b I FSC 5821 J Licensed by Information Handling Services1.3 (U? .ssocintcd Equipment - This equipment shall operate with the associated equipme!t listed in G. 7. 2. APPLICABLE DOCUMENTS 2.1 (U) Chnerd - The following do
8、cuments of the issue in effect on the date of invitation for bids form a part of this specification to the extent specified herein. SPECIFICATIONS Mllitarx MIL-W-5088 Wiring; Aircraft, lnstallation of MfL-E-5400 Electronic Equipment, Aircraft, General Specification for MIL-T-5422 Testing, Environmen
9、tal, Aircraft Electronic Equipment hZIL-C-6781 Control Panel: Aircraft Equipment, Rack or Console Mounted MIL-P-7788 Panels, Information, Integrally Illuminated Mm-“7793 Meter, Time Totalizing MIL-E-17555 Electronic and Electrfcal Equipment and Associated Repair MIL-T-18303 Test Proceduren; Preprodu
10、ctlon and Acceptance for Aircraft MIL-N-18307 Nomenclature and Nameplates for Aeronautical Electronic and Parts, .Preparation for Delivery of Electronic Equipment, Format for. Associated Equipment Naval Air Sysienw Commaxd “5 AR-10 AR -34 STANDARDS Military *MIGSTD-188 MIL-STD-461 MIL-STD-704 MIL-ST
11、D-781 MIL-STD-785 Microelectronic Devices Used in Avionics Equipment, Procedures for Selection and Approval of Maintainability of Avionics Equipment and Systems General Requirements for Failure Classification for Reliability Testing, General Requirements for Military Communications System Technical
12、Sandar+ Electromagnetic Interference characteristics, Requiroments ior Equipment Electric Power, Aircraft, Characteristics and Ulilization of Test Levels and Accepthieject Criteria for Reliability of Noncxpendable Electronic Equipment neliability Program for System and Equipment Devclopment n!-d Pro
13、duct ion 2 Licensed by Information Handling ServicesSTANDARDS Military MIL-STD-794 Parts and Equipment, Procedures for Packaging and Packing of , MS 91403 Cases, Large Size (For use with electronlc equipment in sircraft) 2. 1.1 (U) Availability of Documents - When requesting specificaticns, standard
14、s, drawings, and publications, refer. to both title and number. Copies of this specification and. applicable specifications required by contractors in connection with specific procurement functions may be obtained upon application to the Commanding Officer, Publications and Forms Center, Code 105, 5
15、801 Tabor Avenue, Philadelphia, Pennsylvania 19120. 3. REQUIREMENTE 3.1 (E) Preprociuetion - This specification -makes .provision for preproduction 3.2 (U) Parts and Materials - In the selection of parts and materials ful- testing. fillment of majordesign objectives shall be the prime consideration,
16、 In so doing, the following shall govern: (1) Microelectronic Technology shall be considered and microelectronic items shall conform to requirements specified herein. (2) Other parts and materials requirements shall conform to MIL-E-5400. 5 (3) Nonrepairable subassemblies shall be used in accordance
17、 wtth Specification AR-19 and as outlined in MIL-E-5400. (4) When previously produced models of this equipment did not use nonrepairable subassemblies, the design shall not be changed to employ nonrepairable assemblies .i wthout the .approval of the procuring-activity. 3.2.1 (U) -Nonstandard-arL$ an
18、d -Materials Approval -.- Appyoval For -the use of nonstandard parts *and -materials- (includinfi. electron Lubes, transistors, and diodcs) other than micr-oelcctronic devices shall be obtained as outlined in MIL-E- 5400. Microelectronic devices shall be approved as outlined in AR-5. 3.2.2 (U) Micro
19、electronic Modular Assemblies - When used, Microclcctronic Tvlodalar Assemblies shall meet the requiremenARR-SS, rclemetric Data Transmitting Sets AN/AKT-22Y) shall transpond signals from selectrl sonnhuoys to a shipboard rcceiving set and acoustic processor. Block diagrams of the AN/AICT-22(V)l, AN
20、/AKT-22(V)2, AN/AKT-Z2(V)3, and AN/AKr-22IV)4 are prcsentcd in figures 1, 2, 3, and 4, respectively. The transmitting sets shall opcrate with sonobuoys and telemetric data receiving sels as lollows: Y. indicates operation with specified equipment L indicaks opcration with LOFAR component only f indi
21、catcs opcration with Limited RF frequencies c indicates operation with Reduced Sonobuoy Channels I AN/AKI“22lt12 i x x x X X C C x I Telemetric Data Transmitting Set L. I c 1 x X L AN/AKT-22 Ni4 X X x x f X fc C . Licensed by Information Handling ServicesMIL-T-81695A(AS) - “ 7 “A“ “- -1 I L“T“ I J I
22、. ji “L“ J 8 Licensed by Information Handling Servicesr “A i “ “ MIL-T-3 .“m Licensed by Information Handling ServicesMIL-T-81695AiAS) r“-“-“ “ “_ lar L“ “ I - - -4?imseti3,X the response shall be -3 within O. 006 perccnt of specified unmodulatcd frequency ir? temperature ranges from -54OC to 0C and
23、 45C to 955C. *3.5.1. 7. 8 (C) RF Power Output - 6.3 watts +2, -1 db into 50-ohm rcsistivc load over frequency range of 2200 to 2365 MHz from -54C to 65C. *3.5.1. 7. 9 (u) SIgnal Inouts - a. Four sonic data channels with 10 to 2000 Hz bandwidth, 16. O volts rms for full VCO deviation. b. Four trigge
24、r channels with 36 to 38 kHz bandwidth. c. One voice channel with 300 to 3000 Hz Ixtndwichh, 1. O volts rms, maximum. O. 25 volts rms, mzcsimum. 3.5.1. 7.10 (U) Channel Phase Correlation - Difference in phase delay among sonic channels shall be less than 5 degrees, 10 to 500 Hz. *3.5.1. 7.11 (V) RF
25、Channel Indicator - A means shall be employed to clearly depict the assigned channel letter by a movable, screw-secured tab. *3.5. 1. i. 12 (U) Distortion - The baseband output shal1 contain no single harmonic of any of tlie four subcarrier signals or of the deviated subcarriers that is less than 40
26、 db below any zero signal subcarrier amplitude. t3.5: 1. 7. 13 (U) +Common Mode .Recction - The transmitter-multlplexer dfferentlal input shall provid .GO db cokmon mode rejection at lOOQ- Hz. ;*3:5,1. 7. 14 (L). Interchanceabilitv with Similar Units in Other Svstcms - Ihc acoustic voltage-controile
27、d oscillators (paragraph 3. 5. 1. B), acoustic low-Dass filtcrs (paragraph 3. 5. 1. 9), voice low-pass filter (paragraph 3. 5.1. 101, mixcr anylliier (paragraph 3. 3. 1. ll), isolation transiormer assembly (paragraph 3. 5. l. 15. :;), and the telemetry mount (paragraph 3. 3. 1. 15) shall bc one-way
28、intcrchangcnhlc wilh similar units ln the TD-790/AKT-19. *3. 5. 1. 5 (C) Xcouslic Vollmc-Controlled Oscillators - This acoustic voltnge- controlled oscillators shall meet Ehe :oilowing requirements: Licensed by Information Handling Services*3. 9. 1. 8. 1 (G) Function - The four acoustlc voltage-cont
29、roiiod oscillators shall be nonrcpnirahlc solid-state plug-in modules that convert filtered data signals, received from a corresponding low-pass filter module, into frequency-modulated sine wave restored suhcnrrier signals. *3. 5, 1. 6.2 (v) Input Voltage - Isolated 28 vdc from acoustic low-pass fil
30、ter. *3. 5. 1. 8, 3 (v) Input Signal Voltage flvlodulatinng Voltage). - a. 5 volts pealr.-to-pe of design bandwidth. *S. Ci. 1. 8, 9 (r!) Tnput I9pedance - 430 kilohms minimum shunted by 5 pl, maximum lor ail cllanncls. Licensed by Information Handling ServicesMIL-T-SlGD6AiAS) AMPL Used to adjust am
31、plitude. com- 01 FREQ Used to set (zero) operathg center .control frequency. (balance) 3. 5. 1. 8.11 (U) Test Point - The voltage controlled oscillators shall have an output test point to monitor the fm subcarrier output signals, 3.5.1. 8. 3.5 (U) Form Factor - The dimensions of the voltage controll
32、ed oscillators shall be in accordace xith fibus G. *3. 5. 1. 9 (v) Acoustic LOtv-Pass Filter (Sonic Data Channels) - The low- pass filters shall meet the followmg requlremenrs: *3. 5. 1. 9. 1 (U)- Function - The four acoustic ltv-pass filters shall be dcpol: rcpairablc solid-state plug-in modules th
33、at provide signal conditioning for four sonic data clanne1 inputs to multiplexer. They shall provide dc power, isolated from ground to corresponding acoustic voltage controlled oscillator modules. 3. 5.1. 9.2 (u) hput Power - 28 vcic supplied from internal regulated power of T-1220/.UCT-22 (V). *3.5
34、.1. 9.4 (U) Fresuencv Range EiandpassL - The input signal shall be filtercd to a bandpass of 10 t6 2000 fiz. The passband shall be flat within It S kHz. *3. 5. 1. 9. 5 (u) Output Level - 1. 77 volts rms at 100 Hz with 1G volt rms input. *3. 5. 1. 9. 6 (u) Conols - The LOFAR low-pass filter shall hav
35、e an ADJUST con- trol to adjust tbe.sigiln1 below 22. 8 kRz; above 43.8 kHz. *3.5.1.12.4 (U) Input Impedance - 10 kilohm, nominal, each of four *3.5,1.12.5 (U) Output Impedance - 10 kilohm, nomtnal. 3. 5.1. 12.6 (U) Bput Signal Voltaqe - 1 *O. 1 volt rms. *3. 5. 1. 12. 7 (U) Output S1e;nal Voltzqe -
36、 Adjustable up to 50 millivolts rms with a single 1 volt rms input. Licensed by Information Handling ServicesGAIN7 INPUT TEST TEST POINT POINT r I-h?n2Xe 1 1. 625 I MAX REF L O. I 4 1 20.0 I5 kf4-40 MOUNT1 NG SCREW r CONNECTOR 1 CANNON DEH-9P- WTES: I ALL DlYLHSfONS IN INCHES z TOLLRANCES +ma CXCCPT
37、 AS NOTED. Weighl: ?.O ounces lapptormatell. Volume: I .8 cubic Incner. Cooneetor Pin Functionr: PIN FUNCTION Figurc S. Misor Alnplificr, For111 Factor and Connector 1Zcquirelnont.s 23 Licensed by Information Handling ServicesUIL-T-81695A 58 W 979770b 01116490 T 3.5. 1. 12. 8 (U) Form Factor - The d
38、imensions of the trlgger-filter shall be in accordance with figure 9. *3.5.1.12.9 (v) Controls - The trigger filter shall have a gain control to provide adjustment O to 90 mv with 1 volt input. 3. 5.1. 13 (U) FM Transmitter - The FM transmltter shall meet the fallowing rdquirements : *3. 5.1. 13.1 (
39、C) Function - The transmitter shall be a factory repairable encapsulated, solid-state, crystal-controlled fm transmitter module. It shall fm modu- late and transmit-multiplexed output signals on one of three standard 3ss igned carrier rrequcncies. The transmitter shall be true fm and .adjustable to
40、accept external vldeo, PCM waveform, or fm/fm multiplex. *3.5.1.13.2 (U) Inout Power - 28 ao. 005 *3. 5. 1. 13. 8 (C) Frequency Deviation Sensitivity - 2.8 volts peak-to-peak over environments? for a125 Hz Al0 percent *3. 5.1. 13. 9 (C) Total Harmonic Dls tortlon - Less than 2 percent at 135 kF?i *3
41、.5.1. 13. 10 (C) Deviation Linearity - ;Modulation. Type - Truefm. 3. 5.1. 13.13 (U) Form Factor - The dimensians of the fmsmftter-shSl be :in accordance with figure 11). *3. 5. 1. 13. 14 (C) Modulation Range - 10 Ilz to 125 kHz, flat within Power Handling Capability - 10 watts, minimum. 3. 5, 1. 14
42、.3 (U) Reverse Isolation - 20 dh, mintmum. 3.5.1. 14.4 (C) Prequency Range (Passband - 2200 to 2300 MHz. 3. 5.1. 14.5 (U) Termination Impedance - 50 ohms. 3. 5, 1. 14. G (U) Voltwe StandinP: Wave Ratio - 1.25:1, maximum. , 3. 5.1. 14.7 (U) Fortvard Insertion Loss - O, 3 db, maximum. e. 5.1. 14.8 (C)
43、 Power Monitoring Oum - 25 h2.5 microamperes at 5 watts forward and reverse, into 50 microampere ammeter with 20-ktlohm impedance. 9.5. .?. 14.9 (u) Form Factor - The dimensions of the isolator shall be in accordance with figure 11. *3. 5. 1. 15 (v) Telemetry Mount - The telemetry mount shall meet t
44、he following requirements. *3.5. 1. 15.1 (v) Function - The telemetry mount shall be an IhlA repairable assembly that provides mouncmg acillties and interconnecting wiring for plug-in modules and transformer xssembly. It shall be wired and have provisions for nine low-pass filters, eight voltage con
45、trolled oscillators, two DIFAR modllles, and a widebnnd mixc!r- nmpliliar. The isolation transiormer assemblv shall be mounted and wired below lhe - chassis. Signal, power and control connections shall be made through connectors J21 and 522. The provisions for the two DlFAR modules shall consist of
46、two wired and unused sockets (J19 and 520). As used in the (V)1 unit ivithout the DIFAR multiplex, a jumper shall be installed between pins 5 and 8 of 520. When the DIFAR modules are used, as in the (V)2 unit, tho jumper shall not be installed. *3. 5, 1. 15. 2 (U) Form Factor - The dimensions of the
47、 telemetry mount shall be in accordance with figure 12: 3. 5. 1. 15. 3 (U) Isolation Transformer Assembly - The isolation transformer ;sscmbly in the nlultiplcs mount shall meet the Ioilowing requirements. *3. 5. l. 15. 3. 1 (U) Function - The isolation transformer assembly shall be a nonrepairablc
48、encapsulated chassis-mounted assembly that contains the isolation transformer mind attenuation network used to couple multiplesed output to fm t rnns 111 i t t c 1. Licensed by Information Handling ServicesFigure 11. Isolator,/Power Monitor Form Factor and Con Licensed by Information Handling Servic
49、esI MIL-T-81G95A(AS) z I I I Y % + + 2 ., S + u + Il :_ . .z o; .- _i Firrure E. Telemetry Mount, Form Factor and Connector Requirements 28 Licensed by Information Handling Services3. 5. 1.15.3.2 (U) Transformer Ratio - 1 to 2 voltage stepup with a 2.5 kilohm primary and 10 kilohm secondary. 3. 5. 1. 15. 3. 3 (U) (kUt Attenuation - 2 to 1 resistive to produce a nominal unity gain overall circuit. 3. 5. 1.15.3.4 (U) hut Voltace - 1 volt rms maximum. *3.5.1.15.3.5 (v) Common Mode Rejection
