1、MIL-A-B5b48 58 7777706 0375870 b 6-7443 MIL-A-85648(AS) i3 October i983 MILITARY SPECIFICATION AMPLIFIER, TRAVELING WAVE TUBE This specification is approved for use by the Naval Air Systems Command, Department of the Navy, and is available for use by all departments -and agencies of the Department o
2、f Defense. 1. SCOPE 1.1 Scope. This specification establishes the performance, design, test, manufacture and acceptance requirements for the traveling wave tube (TWT) amplifier, herein referred to as the amplifier. 1.2 Classification. The amplifier covered by this specification consists of three typ
3、es: a. Type I 1.0 to 2.0 Gigahertz (GHz) b: Type II 2.0 to 4.0 GHz c. Type III 11.0 to 18.0 GHz 2. APPLICABLE DOCUMENTS 2.1 Government documents. Beneficial comments (recommendations, additions, deletions, and any perti- I nent data which may be of use in improving this document should be ad- dresse
4、d to: Commanding Officer, Naval Air Engineering Center, Engineering New Jersey 08733, by using the self-addressed Standardization Document Improve- ment Proposal (DD Form 1426) appearing at the end of this document or by I- I Specifications and Standards Department (ESSD) Code 93, Lakehurst, I J let
5、ter. I FSC 5865 THIS DOCUMENT CONTAINS 35 PAGES. I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2.1.1 Specifications, standards, and handbooks. Unless otherwise spe- cified, the following specifications, standards, and handbooks of the issue liste
6、d in that issue of the Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation form a part of this specification to the extent specified herein. SPECIFICATIONS M I L ITARY NIL-P-116 MIL-E-5400 MIL-T-5422 MIL-1-61 81 MI L-M-7793 MI L-E-17555 MIL-T-18303 MI L
7、-N-18307 MIL-H-46855 Preservations, Methods of. Electronic Equipment, Aerospace, General Testing, Environment, Airborne Electronic and Interference Control Requirements, Aircraft Meter, Time Totalizing. Electronic and Electrical Equipment Accessories and Repair Parts; Packaging and Packing of. Test
8、Procedures; Preproduction, Acceptance, and Life for Aircraft Electronic Equipment, Format for. Nomencl a ture and I den ti fi cat i on for El ec troni c , ,Aeronautical , and Aeronautical Support Equipment, Including Ground Support Equipment. Human Engineering Requirements for Military Systems, Equi
9、pment and Facilities. Specification for. Associated Equipment. Equipment. MIL-C-81703 Connector, Electric, Circular, Miniature, Rack and Panel or Push-Pul 1 Coup1 i ng, Environmental Resisting. STANDARDS MILITARY MI L-STD-129 Marking for Shipment and Storage. 2 Provided by IHSNot for ResaleNo reprod
10、uction or networking permitted without license from IHS-,-,-MIL-A-85b4B 5B 777770b 0175892 T m MIL-STD-130 PlI L-STD-280 MIL-STD-454 MIL-STD-461 MIL-STD-462 MIL-STD-704 MIL-STD-781 MIL-STD-794 MI L-STD-831 MIL-STD-882 MIL-STD-965 MIL-STD-1472 MI L-STD-45662 MS3102 MS3112 MSl732l MI L-A-85648( AS) Id
11、entification Marking of U.S. Military Property. Definitions of Item Levels, Item Interchange- ability, Models and Related Terms. Standard General Requirements for Electronic Equipment. Electromagnetic Interference Characteristics, Electromagnetic Interference Characteristics, Requirements for Equipm
12、ent. Measurement of. Aircraft Electrical Power Characteristics. Re1 iabi 1 i ty Desi gn Qual if i cati on and Production Acceptance Tests: Exponential Distribution. Parts and Equipment, Procedures for Packaging Test Reports, Preparation of. and Packing of. System Safety Program Requirements. Parts C
13、ontrol Program. Human Engineering Design Criteria for Military Systems, Equipment and Facilities. Calibration System Requirements. Connector, Receptacle, Electric, Box Mounting, Solder Contacts, AN Type. Connectors, Receptacle, Electric, Series 1, Box Mounting, Flange, Bayonet Coupling, Solder Conta
14、ct. Meter, Time Totalizing, Miniature, Digital 28 Volts DC. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-A-85b48 58 9999906 0375893 3 MI L-A-85648 (AS ) 2.1.2 Other Government documents, drawings, and publications. The follow- ing other Gov
15、ernment documents, drawings, and publications form a part of this specification to the extent specified herein. DRAW1 NGS NAVAL AIR SYSTEMS COMMAND (Code Ident 30003) 1356AS235 Ampl if ier, Radi o Frequency AM-7230/DLQ-3C( V) 1356AS236 1356AS237 Ampl if ier , Radi o Frequency AM-7231 /DLQ-3C (VI Amp
16、l i fi er, Radi o Frequency AM-7232/DLQ-3C (V) (Copies of specifications, standards, handbooks, drawings, and publications required by contractors in connection with specific acquisition functions should be obtained from the procuring activity or as directed by the con- tracting officer.) 3. REQUIRE
17、MENTS 3.1 Item description. The amplifier covered by this specification is a TWT used to amplify radio frequency (RF) signals existing in the microwave region of electromagnetic energy. The amplifier unit shall, within the meaning of MIL- STD-280, contain the following separate assemblies. 3.1.1 Com
18、ponents. a. TWT assembly. b. Power supply assembly. 3.2 First article. When specified, a sample shall be subjected to first article inspection (see 4.4 and 6.3). 3.3 Interface. 3.3.1 External electrical and RF. The external electrical interfaces for the amplifier shall be provided through connectors
19、 52001, 52005, and 52006, and located as shown on Drawings 1356AS235 for Type I, 1356AS236 for Type II and 1356AS237 for Type III. Connector type and function shall be as speci- fied in Table I. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A
20、-8.5648 58 777770h 037.5874 3 MI L-A-85648 (AS) TABLE I. Electrical and RF interface types and functions. Reference Designation 52001 i n p u t Power / Control 52002 Auxi 1 I dry (Fan) 52003 TWT Low Voltage 52004 52005 52006 52007 Connector Type MS3102E20-8P Winche ter M4SLRGN MS3112ElO-6s Types I a
21、nd II - Type I I I-SMA Female TNC Female Types I and II - TNC Female, right angle Type III - Wave- guide (WR-62) Pin Assignment A B A B C D Function +28 Vdc Operate Command (high vol tage control 1 Remote Standby 28 Vdc Return Remote Operate Remote Faul t +28 Vdc 28 Vdc Return Spare Spare Ground The
22、rmostat (NC) Spare Anode Vol tage High Voltage Leac RF Input RF Output High Voltage Leac - l/ Connector type shall be Reynolds 167-8800 (Double Pole) or 167-9183 - 2/ Not used in Type III. - 3/ Not used in Types I and II. (Single Pole). 5 Provided by IHSNot for ResaleNo reproduction or networking pe
23、rmitted without license from IHS-,-,-MIL-A-85648 5B 97706 0375895 5 m MIL-A-85648(AS) TABLE I. Electrical and RF interface types and functions. (Continued) Reference Designation 52008 52009 5201 O 5201 1 Pin Connector Type Assignment - l/ - I/ Johnson 105601 Johnson 105602 Function High Voltage Lead
24、 High Voltage Lead Test Jack 3.3.2 External mechanical. The external mechanical interface dimensions shall be as shown on Drawings 1356AS235 for Type I, 1356AS236 for Type II and 1356AS237 for Type III. The mechanical interface shall enable direct installation into Government selected electronic pla
25、tforms using existing mounting holes. 3.4 Materials, processes, and parts. In the selection of materials, pro- In doing so, cesses, and parts, fulfillment of major design objectives for the intended application specified herein shall be the prime consideration. the following shall govern: a. Microwa
26、ve technology shall be considered and microwave items shall conform to requirements specified herein. b. Materials, processes, and parts requirements shall be as specified in NIL-E-5400. c. Contractor-designed (peculiar) microwave items shall meet the general intent of MIL-E-5400, d. Approval for th
27、e use of nonstandard materials, processes, and parts shall be obtained as specified in MIL-E-5400. 3.5 Characteristics. 3.5.1 Performance requirements. The amplifier shall, when employed in con junction with other units of the AN/DLQ-3C Electronic Countermeasures Set, meet the performance requiremen
28、ts specified herein at the conditions specified in 4.3. Electron tubes shall be interchangeable between ampli- fiers of the same type (I, II, or III) with no supply voltage changes. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-85648 58 m 9
29、999906 OL7589b 7 MIL-A-85648( AS) 3.5.1.1 Frequency range. The frequency range of the amplifier shall be: Type 1 1.0 to 2.0 Gigahertz (GHz) Type II 2.0 to 4.0 GHz Type III 11.0 to 18.0 GHz 3.5.1.2 RF output power. The amplifier, when operated into a 50 ohm load with a voltage standing wave ratio (VS
30、WR) of 1.5:l 210 percent varied through all phase angles, shall provide an RF output power as follows: Type 1 100 watts between 1.0 and 2.0 GHz Type II 100 watts between 2.0 and 4.0 GHz Type III 80 watts between 11.0 and 12.0 GHz, 100 watts between 12.0 and 17.5 GHz and 80 watts between 17.5 and 18.
31、0 GHz 3.5.1.3 Termination mismatch. The amplifier shall meet specified fre- quency range and RF output power with an input and output voltage standing wave ratio (VSIUR) of 2.0:l nominal. The amplifier shall not be damaged when operating into load with VSWRs up to and including 2.5:l over the freque
32、ncy range and at any phase angle. 3.5.1.4 Input power. 3.5.1.4.1 Input voltage. The amplifier shall operate as required when supplied a power source as specified in Table II and Figures 9 and 10 of MIL-STD-74 except the Steady State Voltage shall be 28.0 - +3.0 Volts direct current (Vdc). 3.5.1.4.2
33、Current drain. The amplifier current drain shall be not greater than 40.0 amperes (A). 3.5.1.4.3 Low voltage protection. The amplifier shall not be damaged by primary power voltages less than 25.0 Vdc, although specified performance is not required during low-voltage periods. The amplifier shall aut
34、omatically resume specified operation when the voltage returns within the specified 1 imi ts . 3.5.1.5 Warni-up time. Within 180 seconds after application o? primary power, the amplifier shall achieve specified output power and all other performance requirements. 7 Provided by IHSNot for ResaleNo re
35、production or networking permitted without license from IHS-,-,-MIL-A-85648 58 m 999990b 0275897 9 W 3.5.1.6 Small signal gain. The small signal gain shall be greater than 45 dB for the applicable frequency range for each amplifier type. 3.5.1.7 Saturated gain. The saturated gain shall be greater th
36、an 40 dB for the applicable frequency range for each amplifier type. 3.5.1.8 Duty cycle. The amplifier shall be capable of 100 percent duty cycle. 3.5.1.9 S ectral urity. Unless otherwise specified in the contract or purchase order _e_r_E_7 see 6.2.1 , all residual noise components within +lo0 KHz o
37、f the carrier shall be down not less than 25 dB from the carrier, As a design goal, all residual noise components shall be down not less than 30 dB from the carrier. 3.5.1.10 Broadband tube noise. The broadband tube noise shall be not greater than +30 dBm. 3.5.1.11 Thermal protection. Unless otherwi
38、se specified in the contract or purchase order (see 6.2.11, the amplifier shall be equipped with auto- matic, resettable thermal overload protection. 3.5.1.12 Harmonic and spurious emissions. In-band and out-of-band har- monic and spurious emissions shall be suppressed not less than 30 dB from the c
39、arrier level. 3.5.1.13 Fault protection. The amplifier shall contain electronic over- load and thermal cut-out and time-delay circuits to provide faul t protection for both microwave tube and power supgy. automatically reset upon clearance of the fault. The amplifier shall pro- vide accessible test
40、points for microwave tube helical current and voltage functions. The protective functions shall 3.5.1.14 Controls and indicators. The amplifier shall provide the fol- lowing controls and status indicators: a. Operate command. The operate command shall be +25.0 to 31.0 Vdc supplied by the external sy
41、stem and shall cause application of high voltage to the traveling wave tube (TWT). application of input primary power. The operate command may be applied coincident with b. Status monitoring. Remote monitoring of Standby, Operate, and Fault conditions shall be indicated by presence of +5 +0.5 Vdc, 2
42、0 milliampere maximum at connector 52001 as specified in Table I. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- Requirement 4, Fungus-Inert Materials; Requirement 15, Ferrous Alloys, Cor- rosion Resistance; and Requirement 16, Dissimilar Metals.
43、 3.9.2 Electromagnetic interference. Unless otherwise specified in the contract or purchase order (see 6.2.11, the amplifier shall not generate EM1 signals either through radiation, power line conduction, amplitude or phase modulation of the output signal nor through spikes fed back to inputs select
44、ed or not selected. Shielding of the amplifier from stray or operating environment EM1 shall be provided as specified in MIL-1-6181 and MIL-STD-461. 3.9.3 Nameplate and marking. The nameplate shall be as specified in Drawings 1356AS235 for Type I, 1356AS236 for Type II, and 1356AS237 for Type III. I
45、nterchangeable parts and assemblies shall be legibly marked. All markings shall be as specified in MIL-STD-130. 3.9.3.1 Serial numbers. The contractor shall prepare requests for serial number assignments as specified in MIL-N-18307 (see 6.2.2). 3.9.4 Interchangeability. The amplifier unit, with sepa
46、rately attached or integrated power supply assembly, shall be interchangeable as specified in - MIL-STD-454; Requirement 7. conform to the requirements of MIL-STD-965. shall present no safety hazard to operating personnel. STD-882 shall be complied with. Elctri cal and electronic component parts sha
47、ll 3.9.5 Safety. The amplifier produced as specified in this specification Provisions of MIL- 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-85648 58 m 9999906 OL75900 5 MI L-A-85648 (AS ) 3.9.6 Human performance/human engineering. The ampl
48、ifier shall be con- structed and configured to minimize human error during installation, opera- tion, removal and maintenance. MIL-STD-1472 and MIL-H-46855 shall be used by the contradtor to meet human engineering and performance requirements. 3.9.7 Standards of manufacture. 3.9.7.1 Primary DC power
49、 connector. The primary DC electrical power con- nector for the amplifier shall be as specified in MIL-C-81703, Class E and shall mate with MS3102 connector. 3.9.7.2 RF coaxial connector. The amplifier RF coaxial connectors shall be front bulkhead mounted, female receptacle. Type of connectors shall be as identified in Table I. 3.9.7.3 Elapsed time indicator. The amplifier shall incorporate a
