1、I I I INCH-POUND I MIL-C-70942 (AR) 30 July 1990 MILITARY SPECIFICATION CIRCUIT CARD ASSEMBLY, POWER SUPPLY: 12922115 This specification is approved for use within the U.S. Army Armament, Munitions and Chemical Command and is available for use by all Departments and Agencies of the Department of Def
2、ense. 1. SCOPE 1.1 Scope. This specification establishes the requirements for manufacture and acceptance of the power supply circuit card assembly (CCA), used in the M90 Radar Chronograph. (See 6.1). 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards and handbooks. The
3、 following specifications, standards and handbooks form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement
4、 thereto, cited in the solicitation. SPECIFICATIONS MILITARY MIL-F-13926 - Fire Control Materiel, Manufacture and Inspection, General Specification for MIL-P-14232 - Parts, Equipment and Tools for Army Materiel, Packaging of MIL-1-45607 - Inspection Equipment, Acquisition, Maintenance and Dispositio
5、n of Beneficial coments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document, should be addressed to: Commander, U.S. Army ARDEC, ATTN: SMCAR-BAC-S, Picatinny Arsenal, New Jersey 07806-5000 by using the self-addressed Standardization Document
6、Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 1290 D I S TRIBUT I ON STATEMENT A. Approved for public release; distribution is Unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-709
7、42 12 9797906 0450565 1 MIL-C-70942 (AR) c 4 STANDARDS MIL I TARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes MIL-STD-109 - Quality Assurance Terms and Definitions MIL-STD-454 -. Standard General Requirements for Electronic Equipment MIL-STD-2164 - Environmental Stress
8、Screening Process for Electronic Equipment (Unless otherwise indicated, copies of federal and military specifications, standards and handbooks are available from: Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.1.2 Other Government documents, drawi
9、nqs and publications The following other Government documents, drawings and publications form a part of this specification to the extent specified herein. Unless otherwise specified, the issues shall be those in effect on the date of the solicitation. DRAWINGS (See 6.4) U.S. ARMY ARMAMENT RESEARCH,
10、DEVELOPMENT AND ENGINEERING CENTER (ARDEC) 12922105 - EM1 Test Procedure 12922112 - Data Unit, Power Supply, Schematic Diagram 12922115 - Circuit Card Assembly, M90 Data Unit PS 12922225 - Environmental Test Methods SPECIAL PACKAGING INSTRUCTIONS P12922115 - Special Packaging Instructions for Circui
11、t Card Assembly, M90 Data Unit PS (Copies of drawings, publications, and other Government documents required by the contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting activity.) 2.2 Order of precedence. In
12、the event of a conflict between the text of this specification and the references cited herein, the text of this specification shall take precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS
13、 3.1 General description. The power supply circuit card assembly (CCA) of the M90 Radar Chronograph is a DC to DC 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70942 (AR) converter located in the M90 data unit and provides all of the regula
14、ted and unregulated voltages for both-the antenna and the d, data unit. 3.2 Components and assemblies. The components and assemblies shall comply with all requirements specified on Drawing 12922112, all associated drawings, and with all requirements specified in applicable specifications and standar
15、ds. Where applicable, the CCA shall meet the requirements of MIL-F-13926 and MIL-STD-454 as follows : a. Dimensions and tolerances b. Inorganic protective surface finishings c. Part identification and marking d. Workmanship e. Soldering electrical connections 3.3 Performance requirements 3.3.1 Input
16、 power. The CCA shall be capable to operate and withstand minimum 18 VDC to 30 VDC input voltage at 4.5 ADC maximum input current on the pins indicated in TABLE I. 3.3.2 Output power. The CCA shall provide the following output power requirements to the pins indicated on TABLE I. 3.3.2.1 Antenna powe
17、r. Power line output for the M90 antenna unit. The voltage level is unregulated and shall be 26 VDC minimum when input power (see 3.3.1) is 18.0 VDC and 55 VDC maximum when input power is 30.0 VDC. Ripple shall be 2Vptp maximum. This output shall be protected by a fusistor. 0 3.3.2.2 Internal power
18、(+12 VDC). The CCA shall provide t12 +/- 0.6 Volts while output current is 150 mA maximum and ripple. is 200 mvp-p maximum. 3.3.2.3 Internal power (-12 VDC). The CCA shall provide -12 +/- 0.6 Volts is 200 mvp-p maximum. while output current is 150 mA maximum and ripple 3.3.2.4 Internal power (+5 VDC
19、). The CCA shall provide +5 +/- 0.25 Volts is 100 mvp-p maximum. while output current is 2.0 A maximum and ripple 3.3.2.5 Internal power (-5 VDC). The CCA shall provide -5 while output current is 30 mA maximum and ripple +/- 0.5 Volts is 200 mVp-p maximum. ?3 Provided by IHSNot for ResaleNo reproduc
20、tion or networking permitted without license from IHS-,-,-MIL-C-70942 (AR) 3.3.3 Power line protection. The CCA shall include protection against overvoltages that exceed the range specified in 3.3.1 and reverse voltage input power conditions. 3.3.4 Power line monitor. The input power signal.shal1 be
21、 provided for power monitoring (the monitoring circuit is not part of the CCA). The input power voltage (see 3.3.1) is filtered and returned on pin 31. Input Power Output voltaqe 18.0 t .1 Volts 16.7 +/- 0.5 Volts 24.0 + .1 Volts 22.4 +/- 0.5 Volts 30.0 - .1, Volts 28.5 +/- 0.5 Volts 3.3.5 Power ind
22、icator lamp. The CCA shall supply voltage to indicator lamps when power is applied to the CCA. The input power voltage (see 3.3.1) is filtered and returned on ph 10. 3.3.6 Relav power. The CCA shall supply voltage to the M90 relays when power is applied to the CCA. The input power voltage (See 3.3.1
23、) is filtered and returned on pins 12 and 13. 3.3.7 Select resistor. Output line on pin 8 of selected resistor to permit choosing an appropriate resistor when determining the t12V output voltage (See 3.3.2). 3.3.8 Short circuit protection. The low voltage outputs: +5V, -5V, +12V and -12V shall be sh
24、ort circuit protected. 3.3.9 Electrical input/output interface. Electrical design of the power supply shall be in accordance with the pin assignment, as shown in TABLE I. TABLE I. POWER SUPPLY CIRCUIT CARD ASSEMBLY CONNECTOR CONTACTS Connector P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 Pin - 1 2 3. 4 5 6 7
25、 8 9 10 11 12 4 Siqnal Name POWER GROUND +5v INPUT POWER POWER GROUND POWER GROUND POWER GROUND POWER GROUND SELECT RESISTOR POWER GROUND LAMP POWER POWER GROUND RELAY POWER Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70942 (AR) Connector -
26、 Pin Siqnal Name P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 P4 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 RELAY POWER INPUT POWER INPUT POWER INPUT POWER -12v -12v -12v t12v
27、 +12v +12v -5v -5v +5v INPUT POWER t5v t5v t5v ANTENNA POWER POWER LINE MONITOR t12v -5v t5v ANTENNA POWER ANTENNA POWER -12v POWER GROUND POWER GROUND POWER GROUND POWER GROUND POWER GROUND POWER GROUND POWER GROUND POWER GROUND POWER GROUND POWER GROUND ANTENNA POWER 3.4 Environmental requirements
28、. 3.4.1 Hiqh temperature. The CCA shall meet the requirements of 3.2 and 3.3 when thermally stabilized at 1125 degrees F. The CCA when subjected to storage temperature of +150 degrees F shall meet the requirements of 3.2 and 3.3 when returned and thermally stabilized at ambient temperature. 3.4.2 Lo
29、w temperature. The CCA shall meet the requirements of 3.2 and 3.3 when thermally stabilized at -50 degrees F when returned and thermally stabilized at ambient temperature. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70742 12 777770b 04505
30、b7 7-1 MIL-C-70942 (AR) 3.4.3 Conformal coatinq. Each CCA, after completion of production stage and before ESS tests, shall be conformally coated using AR type coating, 0.003+/-0.002 inches thickness. 3.4.4 Environmental stress screeninq (ESS) temperature. The CCA shall meet the requirements in 3.2
31、and 3.3, after being subjected to 40 hours of temperature cycling between O degrees F and +125 degrees F in accordance with 5.1.2.1 of MIL-STD-2164. 3.4.5 Environmental stress screeninq (ESS) vibration. The CCA shall meet the requirements in 3.2 and 3.3, after being subjected to random motion in the
32、 range of 20 to 2000 Hz for 5 minutes at an axis perpendicular to the largest surfaces of the CCA. Acceleration spectral density is 6.06 g. RMS in accordance with 5.1.1 of MIL-STD-2164. 3.4.6 m. The CCA shall meet the requirement of Drawing 12922105 when integrated into an M90 RADAR CHRONOGRAPH supp
33、lied as Government Furnished Material. 3.5 First article inspection. When specified in the contract or purchase order, a sample shall be subjected to first article inspection in accordance with the technical provisions herein (see 4.3) . 3.6 Workmanship. The workmanship requirements of MIL-F-13926 a
34、nd MIL-STD-454 shall apply. 3.7 Fabrication. The CCA shall be manufactured in accordance with Drawings 12922112 and 12922115. 3.8 Materials. Materials shall be in accordance with applicable drawings and specifications. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibilitv for inspection. Unless otherwi
35、se specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance o
36、f the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Ref
37、erence shall be made to MIL-STD-109 to define quality assurance terms used herein. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70942 (AR) 4.1.1 Responsibility for compliance. All items must meet all requirements of sections 3 and 5 and al
38、l applicable drawings. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of assuring that all produ
39、cts or supplies submitted to the Government for acceptance comply with all requirements of the contract. does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to acceptance of defective material. Sampling in quality conformance 4.1.2
40、 General provisions. The component and subassembly inspection requirements of MIL-F-13926 and MIL-STD-454 forms a part of the Quality Assurance Provisions of this specifications. 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First artic
41、le inspection (see 4.3). b. Quality conformance inspection (see 4.4). c. Special sampling (see 4.5). 4.2.1 Inspection conditions. Unless otherwise specified, all examinations and tests shall be conducted at the followina d standard ambient conditions: a. Temperature +60 degrees to +90 degrees F. b.
42、Relative humidity 90% RH maximum. a I c. Pressure 28 to 32 inches of Hg. 4.3 First article inspection. 4.3.1 First article submission. The contractor shall submit a first article sample as designated by the contracting officer consisting of three CCA for inspection in accordance with 4.3.2. 4.3.2 .
43、Inspections to be performed. First article assemblies, components and test specimens may be subjected by the Government to any or all o5 the examinations and tests specified in TABLE II and TABLE III herein and to any or all requirements of the applicable drawings. 4.3.3 Rejection. If any assembly,
44、component or test specimen fails to comply with any of the applicable requirements, the first article sample shall be rejected. reserves the right to terminate its inspection upon any failure of any CCA to comply with any of the stated requirements. The Government 7 Provided by IHSNot for ResaleNo r
45、eproduction or networking permitted without license from IHS-,-,-MIL-C-70742 32 777770b 0450573 7 MIL-C-70942 (AR) 4.4 Quality conformance inspection. 4.4.1 Inspection lot formation. The term “inspection lot“ is defined as a homogeneous collection of units of product from which a representative samp
46、le is drawn or which is inspected 100 percent to determine conformance with applicable requirements. Units of product selected for inspection shall represent only the inspection lot from which they are drawn and shall not be construed to represent any prior or subsequent quantities presented for ins
47、pection. Homogeneity shall be considered to exist provided the inspection lot has been produced by one manufacturer, in one unchanged process, using the same materials and methods, in accordance with the same drawings, same drawing revisions, same specifications and same specification revisions, and
48、 complies with the provisions for submission of product as specified in MIL-STD-105. All material submitted for inspection in accordance with this specification shall comply with the homogeneity criteria specified herein, regardless of the type of inspection procedure which is being applied to deter
49、mine conformance with requirements. 4.4.2 Examinations and tests. 4.4.2.1 Components, assemblies and subassemblies. All components, assemblies and subassemblies shall be inspected in accordance with the inspection provisions contained in this specification and Quality Assurance Provisions (QAP) listed in the Technical Data Package (TDP). In the absence of QAPs, the applicable quality assurance provisions of MIL-F-13926 shall apply - 4.4.2.2 Fi
