NAVY MIL-A-28729 B-1975 ANTENNA COUPLER GROUP CU-1382( ) (HF BB WIDE DYNAMIC RANGE)《CU-1382( )天线耦合器组(HF BB宽动态范围)》.pdf

1、MIL-A-28 7 29B (EC) 15 May 1975” SUPERSEDING MIL-A-28 7294 (EC) 5 March 1970 MILITARY SPECIFICATION ANTENNA COUPLER GROUP, CU-1382( ) (HF BROADBAND, WIDE DYNAMIC RANGE) This specification is approved for we by all Departments and Agencies of the Department of Def ense. 1. SCOPE i. 1.1 Scope. This sp

2、ecification covers the design and performance of two types of HF broadband, wide dynamic range solid state multicouplers. The two equipments described herein are for use at Naval communication facilities and shall provide coupling of from one to eight radio receivers to one antenna in a SO-ohm syste

3、m. # 1.2 Classification. Multicouplers covered by this specification shall be of the following types as specified: Type I - High linearity Type II - High linearity; phase correlated 2. APPLICABLE DOCUMENTS 2.1 # The following documents, of the issue in effect on the date of invita- tion for bids.or

4、request for proposal, form a part of this specification to the extent specified herein. SPECIFICATIONS MILITARY MIL-E-1 6400 MIL-E-17 5 5 5 MIL-F-19207 MIL-S-19500 STANDARDS MUIITARY MIL4 TD-105 - Electronic, Interior Communication and Navigation Equipment, Naval Ship and Shore, General Specificatio

5、n for Accessories and Repair Parts, Pack- aging and Packing of - Fuseholders, Extractor Post Type, Blown Fuse Indicating and Nonindicating, General Specification for - Semiconductor Devices, General Specifi- cation for - Electronic and Electrical Equipment; - Sampling Procedures and Tables for Inspe

6、ction by Attributes FSC 5985 / THIS DOCUMENT CONTAINS c7 0 PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-A-2729B 59 997970b 0032379 T m MiL-A-287 29B (EC) MIL-STD-108 MIL-STD-109 MIL-STD-189 MIL-STD-242 MIL-STD-4 54 MIL-STD-461 MIL-STD-4

7、62 MIL-STD-701 MIL-STD-781 MIL-STD-810 MIL-STD-1631 MS 3057 MS 3452 MS 3456 Definitions of and Basic Requirements for Enclosure for Electrical and Electronic Equipment Quality Assurance Terms and Definitions Racks, Electrical Equipment, 19-Inch and Associated Panels Electronic Equipment Parts, Selec

8、ted Standards Standard General Requirements for Electronic Equipment Electromagnetic Interference Character- istics, Requirements for Equipment Electromagnetic Interference Character- istics, Measurement of List of Standard Semiconductor Devices Reliability Tests: Exponential Environmental Test Meth

9、ods Procedure for Selection of Electronic and Electrical Parts During Equip- ment Design Distribution Clamp, Cable, Electrical Connector Connector, Receptacle, Electric, Box Connector, Plug, Electric, Rear Release, Mounting Crimp Contact, AN Type (Copies of specifications, standards, drawings, and p

10、ublications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 3. REQUIFSMENTS 3.1 First article sample. Prior to beginning production, a sample shall be tested as specified in 4.3 (see 6.

11、3). 3,2 General. The equipment shall be in accordance with the provisions of Types I and II multicouplers shall MIL-E-16400 to the extent specified herein. be designed for Naval shore fixed plant use and shall provide optimum coupling between a single antenna and eight receivers in communication sys

12、tems. The multicouplers shall be complete, including power supply in one unit, and shall contain all necessary parts and circuitry to provide the specified performance when connected to the specified source. Those requirements specified herein which do not refer to a specific type of multicoupler sh

13、all apply to both types. Those requirements which refer to a specific type of multicoupler shall apply to only that type. 3.2.1 Equipment composition. The multicoupler shall contain all parts, including semiconductor devices, as necessary to its performance, in accordance with the requirements of th

14、is specification, when connected to the primary power 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-28729B 57 H 9979706 0032180 b sources specified in 3.5.6. shall be furnished with each equipment. Connector fittings required for external c

15、ables - # 3.2.2 Design and construction. The design and construction of the equip- ment shall be predicated upon the use of modular assemblies conforming to the requirements of MIL-E-16400. of construction if the predicted mean-time-between-failure (MTBF) exceeds 100,000 hours (see 3.3.1). Those mod

16、ules not meeting this requirement shall be of such design and construction as to be repairable in the field. modular assemblies shall provide for not less than the following functional subdivisions : Modular assemblies may be of the throw-away type The number of (a) Input filter (b) Amplifier/output

17、 isolator (c) Power supply 3.2.3 Duty cycle. The equipment and all items entering into its construc- tion shall be designed for both intermittent and continuous operation, in con- formance with the performance requirements of this specification, under adverse conditions normally encountered in the N

18、aval communications services ashore. 3.2.4 Material. Material entering into the manufacture of the equipment shall be in accordance with MIL-E-16400, except as otherwise specified herein. These materials shall have magnetic characteristic in accordance with MIL-E- 16400. Particular attention shall b

19、e given to the acceptable and unacceptable material requirements of MIL-E-16400. 3.2.5 Selection of parts. The selection and application of all parts shall MIL-STD-242 shall be the basic source for the be in accordance with MIL-E-16400. selection of parts. 3.2.6 Procedure for selection of electronic

20、 and electrical parts and material during design of military items. quests shall be accomplished in accordance with MIL-STD-1631. Prescreening of non-standard parts approval re- I 3.2.7 Tropicalization. Tropicalization of the complete equipment or any unit or part thereof will not be required. 3.2.8

21、 Semiconductor devices (transistors, diodes). Semiconductor devices . shall be selected from approved types in accordance with MIL-STD-701 and MIL-C- 19500, as required by MIL-E-16400. be used. Plastic encapsulated semiconductors shall not il 3.2.9 Printed wiring. Printed wiring, where employed, sha

22、ll conform to Requirement 17 of MIL-STD-454. # 3.2.10 Fuses. Each side of the primary power input to the power supply shall be separately fused. be mounted in insulated, extractor type fuseholders mounted on the front operating panel. The active fuseholders along with a spare fuseholder equipped wit

23、h a spare fuse and spare blown fuse indicator shall be located on the front panel of each equipment. The fuses shall be of the miniature type and shall 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-w- I MIL-A-28727B 57 777770b 0032LL I MIL-A- 28

24、7 2 9B (EC) 3.2.11 Blown fuse indicators. Blown fuse indicators, conforming to the requirements of MIL-F-19207, shall be provided for each active fuse. 3.2.12 Enclosure, The equipment housing shall conform to the requirements of NIL-STD-108 for a totally enclosed enclosure. 3.2.13 External finish. T

25、he external finish shall be in accordance with MIL-E-16400. 3.2.14 Control knobs. Control knobs shall conform to the requirements of MIL-E-16400. Tactile identification forms of control knobs will not be required. 3.2.15 input and output connectors, RF input and output connectors shall be mounted at

26、 the rear of the unit and shall be of the male BNC type. Connec- tors shall be spaced sufficiently to permit adapters for the type N connectors to be used. furnished with the equipments. activity as to what type of coaxial cable is to be used with these equipments, and on the basis of this informati

27、on furnish mating connectors which properly interface with the designated type coaxial cable. A mating connector for each BNC input and output connector shall be The manufacturer shall inquire of the procuring B 3.2.16 Mounting, The complete multicoupler equipment shall be designed such that two can

28、 be fitted into a 1,719-inch (43.66 mm) by 19-inch (48.26 cm) relay rack which conforms with MIL-STD-189. maximum depth of 18 inches (45.72 cm) . The equipment chassis shall have a 3.2.17 Chassis panel assembly. A relay rack mounting panel shall be furnished with each equipment. It shall be construc

29、ted as shown in Figure 1 such that one equipment can be fixed on either side of this panel with threaded screws, complete with one blanking plate. The blanking plate shall be capable of being .fixed to either side of the mounting panel with the same threaded screws used to attach the equipment chass

30、is. the plug shall have an MS 3057 clamp. The-connector (receptacle) and its mating 3.2.20 Front operating controls and devices. The following controls and devices shall be mounted on the front operating panel. indicated, shall be placed on the panel adjacent to their respective items. Titles and ma

31、rkings, as 3.2.21 Power line switch, The power line switch shall be a toggle switch functioning to turn primary power on and off. the two positions of-the toggle lever marked ON and OFF, with ON applying when the switch lever is in its up position. the primary winding of the power transformer. It sh

32、all be titled POWER with The switch should open both sides of 3.2.22 Indicator light. An indicator lamp shall be provided to indicate when power is applied to the equipment. accordance with MIL-E-16400. The lamp and lamp holder shall be in . 5 w Provided by IHSNot for ResaleNo reproduction or networ

33、king permitted without license from IHS-,-,-MIL-A-28727B 57 m 7777706 O032383 1 m MIL-A-2 87 29 B (EC) 3.2.23 Circuit design. preferred circuits of MIL-E-16400. Circuit design shall be in accordance with the 3.2.24 MIL-E-16400. 3.2.25 MIL-E-16400. 3.2.26 Electrical bonding. Electrical bonding shall

34、be in accordance with Internal cabling. Internal cabling shall be in accordance with Electrical connections. Electrical connections shall be in accord- ance with MIL-E-16400. 3.2.27 Wire terminations, Wire terminations shall be in accordance with MIL-E-16400. 3.2.28 Conductor identification. Identif

35、ication of conductors shall be in accordance with MIL-E-16400. 3.2.29 Safety. Safety design shall be in accordance with MIL-E-16400, 3.2.30 Non-standard parts. Approval of non-standard parts shall be in accordance with MIL-E-16400. supply assembly with the exception of power transformers (see 3.2.6)

36、. Non-standard parts shall not be used in the power it 3.3 Reliability and maintainability. 3.3.1 Reliability. The equipment shall be designed to achieve a minimum mean-time-between-failure (MTBF) of 31,500 hours for the type I configuration and 34,000 hours for the type II configuration. For demons

37、tration purposes, the specified MTBF (eo as defined in MIL-STD-781) shall be 15,000 hours for the type 1 and type II configurations. a 3.3.2 Maintainability. The coupler group shall have a mean corrective maintenance time (Wct) not exceeding 30 minutes when repair is accomplished at the organization

38、al level of maintenance by replacement of lowest sub-assemblies (including modules and p.c. boards) and chassis-mounted parts (electronic, elec- trical, electromechanical and mechanical parts), Repairable subassemblies (modules and p.c. boards) shall have a mean corrective maintenance time (Mct) not

39、 exceeding 1.5 hours when repair is accomplished by replacement of individual parts at the appropriate level of maintenance, Corrective maintenance time shall include localization, isolation, disassembly, interchange, reassembly, alignment and checkout for all maintenance tasks. 3.4 Erivironmental c

40、haracteristics. The equipment shall have the following environmental characteristics. 3.4.1 Temperature, The multicoupler equipment shall be designed to conform to the temperature requirements for Range 3 temperature of MIL-E-16400, design shall be in accordance with MIL-E-16400. Thermal Provided by

41、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-28729B( EC) 3.4.2 Relative humidity. The equipment shall provide continuous reliable performance in relative humidities ranging up to 95 percent for both continuous and intermittent periods, including condit

42、ions wherein condensation takes place in and on the equipment in the form of both water and frost. 3.4.3 Shock. The equipment shall not show evidence of physical damage and shall operate in accordance with the performance requirements specified herein after being subjected to the shock testing speci

43、fied in 4.4.2.4. 3.4.4 Altitudes. The equipment shall be capable of transportation by air- craft and common carrier, and shall be capable of operating at altitudes up to 10,000 feet (3048 meters) above sea level. 3.5 Electrical performance. The multicoupler shall be designed and con- structed to pro

44、vide the performance specified herein under any possible combina- tion of conditions specified herein. Specific test procedures specified in Section 4 shall apply as pertinent to the particular performance requirement invo IV ed . 3.5.1 Antenna input, The antenna input circuit shall be designed for

45、a 50-ohm unbalanced input system. 3.5.2 Number of outputs, The antenna coupler shall provide facilities for the operation of up to eight radio receiving sets from a single antenna (that is eight output connectors) 3.5.3 Output impedance, Each of the eight output connectors shall be de- signed for op

46、eration with an unbalanced coaxial transmission line having a nomi- nal impedance of 50-ohms. /I 3.5.4 Voltage standing wave ratio (VSWR). The voltage standing wave ratio shall not exceed 1.5:l to either the input transmission line when terminated with a 50-ohm signai source, or the transmission lin

47、e for any of the eight outputs when terminated with 50-ohm loads. This requirement shall apply for the input and any given output for any combination of terminations of the other connectors. 3.5.5 Frequency range. The nominal operating frequency range of the com- plete antenna receiving multicoupler

48、 equipment shall be from 2.0 megaHertz (MHz) to 32 MHz with the input filter in the circuit. With the input filter bypassed, the multicoupler shall be able to operate at all frequencies from 0.3 to 2.0 MHz and conform to all other requirements specified herein. 3.5.6 Primary power source. The comple

49、te multicoupler shall comply with the performance requirements of this specification when operated from a power source of 105/115/125 volts I10 percent or 210/230/250 volts +lo percent, 50 to 60 Hertz k5 percent, single phase alternating current (AC). It shall also com- ply with voltage and frequency power transients in accordance with MIL-E-16400. 3.5.6.1 Taps. Taps shall be provided on the primary winding of the power transformer for the voltages specified in 3.5.6. for 115 volts