1、-_ IIL-A-2889B 59 W 9999906 005Li2L3 b PPP-B-636 PPP -T-60 MIL-A-?8898(C 1 15 -November 1985 MILITARY SPECIFICATION ADAPTEK, RADIO FREQUENCY, Ki-l0158/BRC This specificatio;i is approved for use by the Space and Naval Warfare Systems Command, Department of the Navy, and is available for use by all D
2、epartment and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the performance., design, manufacture, test, and accept- ance requirements for the Radio Frequency (RF) Adapter, MX-lC158/BRC, hereinafter referred to as the RF adapter. 2. APPL-ILABLE DOCUMENTS 2.1 Go
3、vernment documents. 2.1.1 Specifications and standard(s). The following specifications and standard(s) form a part of this specification to the extent specified herein. of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) a
4、nd supplement thereto, cited in the solicitation. Unless otherwise specifiea, the issues SPECIFICATIONS FEDERAL Boxes, Shipping, Fiberboard Tape: Packaging, Waterproof MILITARY MIL-E-1 6400 Electronic, Interior Communication And Navigation Eau-binent. Naval Ship And Shore. General . . “3 Sl;erific-a
5、tion For NAVAL UNDERWATER SYSTEMS CENTER -( NUSC) New London LaboratoV-( NLL) NUSC-342/4141-779 Cable, Radio Frequency, Buoyant, General Specification STANDARDS MILITARY MIL-STD-109 Quality Assurance Terms And Definitions Beneficial comments (recommendations, additions, deletions) and any pertinent
6、data which may be of use in improving this document should be addressed to: Naval Warfare Systems Command (SPAWAR-81 11 ), Washington, DC the self-addressed Standardization Document Improvement ?roposal (DD Form 1426) appearing at the end of this document, or by letter. Commander, Space and 20363-51
7、00, by using FSC 5985 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. /- THIS DOCUMENT CONTAINS PAGES. /t Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-28898( EC) 2.1.2 Other Government drawings (DWGs). The f
8、ollowing other Government DkGs form a part of this specification to the extent specified herein. Unless otherwise specified, the isjues shall be those in effect on the date of the solicitation. DWGs MILITARY NUSC/NLL NUSC/NLL 02380006 Amplifier/Adapter Assembly Procedure NUSC/NLL 02381001 Test Flug
9、NUSC/NLL 02387001 Adapter, Radio Frequency, MX-l0!58/RC RE D 49485 Connector, LiG-1820/11 (Copies of specifications, standard(s), and DWGs required by contractors in connection with specific acquisition functioris should be obtained from the contracting activity or as directed by the contracting off
10、icer.) 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. IJnless otherwise indicated, the issue in effect on date of invitation for bids or request fcr proposal shall apply. DWGs SPEARS ASSOCIATES, INCORPORATED (SA!) SAI C185C50 SAI O18
11、5049 SAI E185017 SAI E185033 Liner tiousing Assembly Connector, Plug, Electrical (Pin Contact) Antenna Element Connector, Plug, Electrical (Socket Contact) Cable As sem b 1 y (Copies of DWGs required by contractors in connection with specific acquisition functions should be obtained from the contrac
12、ting activity or as directed by the contracting officer.) and the references cited he-in (except for associated detai 1 specifications, specification sheets, or MS standards), the text of this specification shall take precedence. Nothing in this specification, however, shall supersede applicable law
13、s and regulations unless a specific exemption has been obtained. 2.3 Order of precedence. In the event of a conflict between the text of this specification 3. REQUIREMENTS 3.1 General. The RF adapter shall be in accordance with MIL-E-16400 to the extent specified herein. 3.1.1 First article. When sp
14、ecified in the contract or purchase order, a sample shall be subjected to first article inspection (see 4.3 and 6.3). 3.1.2 Description. The RF adapter shall consist of the components specified in a through c: a. Housing Assembly: SAI DWG D185049 b. Liner: SAI DWG C185050 c. Adapter: NUSC/NLL DWG 02
15、387001 3.2 Characteristics. Characteristics shall be in accordance with 3.2.1 through 3.2.2.5. 3.2.1 Performance. The RF adapter shall interface with Antenna Elements, AS-3435/BRC or AS-3436/BRC, RF Cable Assemblies, CG-3819/BRC or CG-3820/BRC, and Antenna, Transmission Line, AS-3437/BRC of Buoyant
16、Cable Antenna Assembly, AS-3434(Vj/BRC. The RF adapter shall permit reception of RF signals over the very low frequency (VLF) and ;ow fsaiiency (LF) and medium frequency (MF) and high frequency (HF) frequency range and transmission of signals over the MF and HF frequency range. The RF adapter shall
17、be mechanically compatible with deployment and retrieval through Antenna Transfer Assembl ies, AN/BRA-18( ) and AN/BRA-24( ). 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-28898 59 M 799770b 0054235 T a Measurement poi n t s (see FIGURE 1)
18、A and C (continuity) B and D (continuity) B and C (insulation) i- WL-A-28898(EC) DC resistance Less than 0.25 ohms Less than 0.42 ohms Greater than 1000 megohms 3.2.1.1 Direct current (DC) resistance. When tested in accordance with 4.5.1, the RF adapter shall conform to the continuity and insulation
19、 resistance limits specified in TABLE I. TABLE I. RF adapter DC resistance requirements (with test cables). L-APPKOXIMATELY 30-FT TEST CABLE 30-FT TEST CABLE (see NOTE 1) (NUSC-C-342/4141-279/2-12) CONNECTOR PLUG, (SAI E185033) (SOCKE r CONTACT) SAI 0185049) ELECTRICAL CONNECTOR PLUG, ELECTRICAL (SA
20、I E185033 MODIFIED WITH PIN CONTACT SAI E1850171 NOTE: 1. FEET 2. CIRCLED LETTERS ARE DC TEST POINTS. FIGURE 1. RF adapter test assembly. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- _ MIL-A-28878 57 7777706 0054236 3 3.2.1.2 RF power. The RF a
21、dapter shall be capable of withstanding 1000 watts (W) continuous wave (CW) power over the frequency range of 2 megahertz (MHz) to 30 MHz when tested in accordance with 4.5.3. The RF adapter shall exhibit no physical damage as revealed by visual examination, and no electrical degradaticn as indicate
22、d by the DC resistance test of 4.5.1. 3.2.2 Physical characteristics. The RF adapter shall be fabricated and assembled in accor- dance with this specification and the guidance of DWGs specified in a through d: a. SAI DWG C185050 b. SAI DWG 0185049 c. NUSC/NLL DWG 02380006 d. NUSC/NLL DWG 02387001 3.
23、2.2.1 Flexibility. Khen tested in accordance with 4.5.6, the RF adapter shall exhibit no physicl damage as revealed by siirface examination and pressure test, and no electrical degra- dation as revealed by the DC resistance test. 3.2.2.2 Fressure resistance. When tested under hydrostatic pressure in
24、 accordance with 4.5.2, the RF odapter shall not show evidence of damage or flooding. adapter shall exhibit n degradation as revealed by the surface examination, DC resistance test, and RF power test. 3.2.2.4 Tensile strength. When tested in accordance with 4.5.8, the RF adapter, with suitable test
25、cables attached, shall withstand static tensile loads along the axis with no evidence of cracking or other damage. The maximum elongation of the housing section, shall not exceed 1.6 percent when subjected to tensile loads as ipecified in 4.5.8. 3.2.2.3 Durability. The RF adapter shall withstand the
26、 durability test of 4.5.9. The RF 3.2.2.5 Diameter. The RF adapter shall have a diameter of 0.650 inches (in.) - +0.020 in. 3.3 Environmental requirements. Environmental requirements shall be as specified in 3.3.1 and 3.3.2. 3.3.1 Nonoperating temperature. The RF adapter shall withstand shipment and
27、 storage temperatures over the range -40“ Celsius (C) to +7OoC with no degradation. 3.3.2 Operating temperature. When tested in accordance with 4.5.7.2, the RF adapter shall operate at -10C. substances, such as encapsulants, adhesives, or preservatives which could contaminate the closed environment
28、of a submarine. Materials specified in NUSC/NLL DWG 02387001 shall be acceptable. Substitutes shall be approved by the Government. 3.4 Health and safety. Health and safety considerations require avoidance of toxicological 3.5 Workmanship. The RF adapter shall be manufactured with care using the exac
29、t materials, dimensions, and surface finishes specified in NUSC/NLL DWG 02387001. Fabrication shall ensure correct arrangement, hookup, and fastening of all components. The molding procedure for the housing is particularly critical and shall be performed with careful attention to spacing, lay, and t
30、ension of reinforcing members. The completed assembly shall Se clean and free of sand, grit, burrs, cuts, and gouges. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility order, the contractor i II) W c W u E rd c II) II) W L W L 3 II) cn W L a Provided by IHSNot for ResaleNo reproduction or networkin
31、g permitted without license from IHS-,-,-MIL -A-28898( EC) TABLE III. Pressure resistance test requirements. First art i c 1 e Pressure ( p s i g )i/ O 600 O 600 O 600 O 600 O 600 O 600 O Durat i on (minutes) 5 25 5 25 5 25 5 20 hours 5 25 5 25 5 Production O 600 O 600 O 600 O 600 O 600 O 600 O 600
32、O 600 O Durat ion (minutes) 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 1 pound-force per square inch gage 4.5.3 RF power test. The RF adapter, using the test setup shown in FIGURE 3, shall. be tested by applying 1000 W of CW RF power. (end marked with CA) for 5 minutes over a frequency range of 2 MHz
33、 to 30 MHz. of the RF power test, perform the DC resistance test of 4.5.1. bled and inspected for damage in accordance with MIL-E-16400. RF power shall be applied through the RF adapter After completion The RF adapter shalT be disassern- RF ADAPTER AND (SEE FIGURE 1) (2) APPROXIMATELY 30-FT CABLE AS
34、SEMBLIES f RF POWER 1 kW,50 ohm CW 50 ohm SOURCE DUMMY */ CONNECTOR COAXIAL CABLE CONNECTOR LOAD c UG-l820/U 1 kW (See NOTE) WATTMETER RG-9/U UG-l820/U APPROXIMATELY 59-FT MOTE : KI LOWATT ,- . FIGURE 3. RF power- test setup. I 8 c o Provided by IHSNot for ResaleNo reproduction or networking permitt
35、ed without license from IHS-,-,-MIL-A-28898 57 m 9997706 005Li22L 5 m MIL-A-28898(EC) L 4.5.4 Surface examination. Surface examination shall be performed in accordance with Conformance to the requjrements of 3.2.2 shall be verified during the surface MIL-E-16400. examination. Radiographic inspection
36、 shall be conducted on the first article and on every consecutive fifteenth RF cable adapter housing section to verify correct internal spacing and lay of reinforcing members and the absence of flaws. 4.5.5 Diameter test. The RF adapter shall be passed through J sizing block having a hole 4.5.6 Flex
37、ibility test. The RF adapter, assembled with test cables as shown in FIGURE 1, diameter of 0.670 in. to 0.671 in. maximum. shall be flexed through an S-bend path test device made in accordance with FIGURE 4, three times in each direction, at 60 ft per minute. The continuity of the center conductor a
38、nd the outer conductor of the RF adapter with test cables shall be monitored continuously during the test. The surface examination of 4.5.4 shall be performed. The continuity resistance limits shall be in accordance with TABLE I. ROLLER GROOVE URGE3 THAN OiANE2 OF CABLE TO PREEiYf SEIZING / -12 in.
39、ADAPTER, RF (NUSC/NLL Q2387001 ANO 31 0185049) FAT START Of TEST CGNNECTOR PLUG, ELECTRIC2L -q (SAI E185033) f CCNNECTOR PLUG ELECTRICAL ( sa r E 1850 17) I- II I & 12 in. , FXE-WHEELING COMPONENTS AT 80 OF NOTE: Use sufficient tension to bend adapter housing into close contact with rollers. Ensure
40、contact through at least 180 degrees on each roller. Do not pull on the UG-l820/U end connectors to perform the test. i FIGURE 4. Flexibility test setup. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- -_ MIL-A-28878 57 W 7777706 0054222 7 W 4.5.7
41、 Temperature test. The temperature test shall be in accordance with 4.5.7.1 and 4.5.7.2. 4.5.7.1 Nonoperating temperature. The RF adapter, assembled with test cables as shown The temperature in FIGURE 1, shall be formed into a coil with a maximum diameter of 22 in. The coil shall be placed in an env
42、ironmental chamber and conditioned for 8 hours at -4OoC. shall be increased at a rate of 10C per hour until the chamber reaches a temperature of +7OoC. The RF adapter and test cable assembly shall then be removed and inspected for damage. The RF adapter shall show no evidence of cracking or other da
43、mage. formance shall be verified by conducting the flexibility test of 4.5.6 at room temperature. The temperature of the environmental chamber shall be held at 70OC for 8 hours. Acceptable RF adapter per- 4.5.7.2 Operating temperature. The RF adapter, assembled with test cables as shown in FIGURE 1,
44、 shall be formed into a coil not over 36 in. in diameter. The coil shall be placed in an environmental chamber and conditioned for 12 hours at -1OOC. While still in the environmental chamber at -lOC, the RF adapter with test cables, shall be flexed through an S-bend path, as shown in FIGURE 4, three
45、 times in each direction, at 60 ft per minute. Electricai continuity of the RF adapter with test cables shall be monitored during the test. The continuity resistance limits shall be as specified in TABLE 1. Acceptable RF adapter performance shall be verified by inspecting the RF adapter for evidence
46、 of damage. 4.5.8 Tensile test. The tensile strength of the RF adapter shall be tested by subjecting the RF adapter to a static tensile load along the axis in accordance with TABLE IV. The test setup shall be similiar to the setup shown in FIGURE 5. The length of the RF adapter housing shall be meas
47、ured under load at the beginning (initial 10-pound (lb) tensile load) and at the 500-lb tensile loads during the fourth cycle. of 3.2.2.4. The RF adapter shall be examined for evidence of cracking or other damage. flexibility test of 4.5.6 shall be performed. The elongation shall comply with the req
48、uirements The TABLE IV Tensile load test requirements. Connector plug (pin contact) Tensile (lbs) 10 400 10 400 10 400 10 400 10 Our at i on (minutes) Time required to perform reference measurement 55 5 55 5 55 5 55 5 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without li
49、cense from IHS-,-,-MIL-A-28878 57 9777906 0054223 7 I OVEMLL LENGTH OF CABLE 8ETIIEE9 GRIPS VARIED TO SUIT PHYSICAL SIZE OF TEST RIG MIL -A-28898 ( EC ) /I/ / / 1 ANCiOR PA0 EYE OR PULL YOKE + 51INC:iING SYSTEM OR LOBO TESTER DYNAiYCMETEX OR LOA0 CELL ANO RWBCUT BANO-TYPE HOSE CLAMPS * EIENLY ALLOW EXCESS CABLE i0 LIE SPACED, TO IyIIyI!lIZE SLIPPAGE INTERFERE WITd TEST RMOINGS IN SbW0T
