1、MIL-C -50742(MU) 8 August 1973 MILITARY SPECIFICATION CONTROL, RECEIVER -TRANSMITTER C8728( )/VVG-l: 11738851 This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This specification covers one type of electro-mechanical unit kown as Contro
2、l, Receiver-Transmitter C-8728( )/VVG-l: 11738851 see 6.1). 2. APPLICABLE DOCUMENTS 2. 1 The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein. SPECIFICATIONS Military MIL-F- 13926 Fire
3、 Control Materiel: General Specification Governing the Manufacture and Inspection of MIL-1-456 07 Inspection Equipment; Acquisition, Maintenance, and Disposition of MIL-S-45743 Soldering, Manual Type, High Reliability Electrical, Electronic, Instrument, Communication, and Radar for Aerospace and Con
4、trol Systems, Procedures for -. FSC-1240 : Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-50742 12 7977906 0330465 O i MIL-C-50742(MU) 8 August 1973 MIL-S-46844 . STANDARDS Military - MIL-STD-105 MIL-STD-109 MIL-STD-810 DRA WINGS Solder Bath S
5、oldering of Printed Wiring Assemblies, Automatic Machine Type Sampling Procedures and Tables for Inspection by Attributes Quality Assurance Terms and Definitions Environmental Test Methods U. S. Army, Frankford Arsenal P CI F8565556 F11738851 AGING DAT. 11738851 - SI Pressure Tester Control, Receive
6、r - Transmitte r: C-8728( )/VVG-l: 11738851 EET Packaging of Cont.ro1, Receiver- Transmitter C-8728( )/VVG-1: 11738851 (Copies of specifications, standards, drawings, and packaging data sheets required by suppliers in connection with specific procurement functions should be obtained from the procuri
7、ng activity or as directed by the contracting officer. ) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C - 50742(MU) 8 August 1973 3. REQUIREMENTS 3.1 Fabrication. The Receiver-Transmitter Control C-8728( )/ G-1, herein referred to as the uni
8、t, shall be manufactured in accordance with Drawing F11738851 and drawings pertaining thereto. 3.2 General specification. The unit shall meet the following requirements, where applicable, of MIL-F- 13926; a. Order of precedence b. Dimensions and tolerances c. Inorganic protective surface finishes d.
9、 Electrical and electronic assemblies e. Part identification and marking f. Wo r kmans hip. 3.2.1 Soldering. Soldering of electrical connections shall be in accordance with MIL-S-45743 or MIL-S-46844, except that bare copper wire exposure shall be permitted at clipped ends of component Leads, 3.3 Pe
10、rformance. Unless otherwise specified, the unit shall meet the performance requirements of this specification at standard ambient temperatures between 60 degrees Fahrenheit (O F) and 90“ F. 3.3.1 Power and signals. The unit shall perform as specified herein when the power and signals of table I are
11、applied as specified, 3.3.1.1 Continuity. Direct continuity (resistance equal to or less than 0.3 ohm) shall exist between the pins of J1 and P1 which are directly interconnected as shown on the applicable schematic diagram called out on Drawing F11738851. 3.3.1.2 RANGE and RESET switches. With no p
12、ower or signals applied, the circuit conditions between pins of P1 and between pins of J1, as listed in table II, shall be as specified in table II for the indicated positions of the RANGE and RESET switches. 3.3.1.3 RESET indicator. With the +13 Vdc power of table I applied as specified, but with n
13、o signal applied, the indicator tight marked RESET shall light. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-50742 12 B 777770b 0330467 4 m MIL-C-50742 (MU) 8 August 1973 TABLE I POWER AND SIGNALS Item 1 I. 1 7 Li. 2. 1 Conditions Power so
14、urce t13 Vdc Signal source Digital Signal Characteristics Tolerance: $1. OVdc Ripple: - 25 mV p-p Logical one: t13. o il. ov Logical zero: to. 5 +o. 5v Conne ctions Connected between the following pins, when specified herein. J1 -AA(+) and J1 -L(-) JI -M(t) and J1 -L(-) JI-J (t) and J1-L (-) Applied
15、 as specified he rein. TABLE II RANGE AND RESET SWITCHES CLRCUIT CONDITIONS Switch Pins of JI Pins of P1 Item Switch Po sition yand L T and L 42 and 9 1 Normal O NA O 2 Depressed S NA S 3 Normal NA O NA 4. Depressed NA S NA hTOTE 1. Circuit condition legend: RANGE RESET S = Short Circuit (resistance
16、 equal to or less than O. 3 ohm) O = Open Circuit (resistance greater than 1 megohm) NA = Not applicable 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-C-50742 LE! m 7777706 0330468 6 m MIL-C - 50742(MU) 8 August 1973 3.3.1.4 RANGE indicator
17、. With the t13 Vdc power of table 1 applied as specified, but with no signal applied, the indicator light marked RANGE shall not light. as specified and with the logical zero signal type B of table I applied to J1-N, the range indicator light shall light. With the t13 Vdc power applied 3.3.1. 5 Reti
18、cle tight controL. With the t13 Vdc power of table I applied as specified, full-range clockwise rotation of the shaft of poten- tiometer R1 shall cause the voltage at Pl-10 referenced to J1-L to vary from to. 5 *O. 5 Vdc to t13.0 *l. 5 Vdc. 3.3.1.6 Azimuth drive train backlash. With the azimuth outp
19、ut shaft locked in place, the azimuth control knob shall rotate not more than 10 degrees (sum of positive and negative rotation)-when a torque of 15 ounce-inch . (oz. -in. 1 is alternately applied in the positive and negative directions. 3. 3. 1. 7 Elevation drive train backlash. With the elevation
20、output . shaft locked in place, the elevation control knob shall rotate not more than 8 degrees (sum of positive and negative rotation) when a torque of 15 oz. -in. is alternately applied in the positive and negative directions. 3. 3.2 Environmental. 3.3.2.1 Storape temperature. The unit shall meet
21、the requirements of 3. 3.1 at ambient temperature after exposure to and thermal stabili- zation at -80F and t1 60F. 3. 3.2.2 Operating temperatures. The unit shall meet the require- ments of 3. 3. 1 while exposed to and thermally stabilized at -40F and t125OF, subsequent to which the requirements of
22、 3.3.1 shall be met at ambient temperature. 3. 3.2. 3 Vibration, The unit shall show no physical failure and shall meet the requirements of 3.3.1 afte r being exposed to the following vibrator y conditions: a. Amplitude : 1/64 inch, constant (1 132 inch double amplitude) b. Vibratory motion: Simple
23、harmonic c, Sweep time: 5 to 55 to 5 Hertz in a five- minute period 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL- C - 5 0742 (MU ) 8 August 1973 d. Vibration cycling: Three linear or logarithmic sweeps applied to each of the three mutually p
24、erpendicular axe s. 3. 3.2. 4 Shock. The unit shall meet the requirements of 3. 3.1 after being exposed to a total of 15 shock impulses, three in each direction along the X and Y axes and one in the positive direction along the Z axis. a time duration of 3. 5 &O. 5 milliseconds and a peak amplitude
25、of 1 oog. Each shock impulse shall be half-sine wave with 3.3.3 Seating. With the unit initially pressurized with nitrogen or air to 5 I1 pounds per square inch gage (psig) (with cover in place), the loss of pressure shall not exceed 0,055 psig in one-half hour, except for special sampling-environme
26、ntal, during which the loss of pressure shali not exceed O. 22 psig in 2 hours. 3. 34 Internal. pressure. Subsequent to meeting the sealing requirements, the unit shall be dry flushed with an internal atmosphere containing air or nitrogen having a dew point of at least -63. 5“F, and an internal pres
27、sure of 3, 5 &O. 5 psig shall be established. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-50742 12 M 9999906 0330470 4 W MIL-C- 50742 (MU) 8 August 1973 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise s
28、pecified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. as otherwise specified, the supplier may utilize his own or any other f.acilities suitable for the performance of the inspection requirements specified here
29、in, unless disapproved by the Government. reserves the right to perform any of the inspections setlorth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements, Except The Government . 4. 1.1 General provisions. The coinpone
30、nt and subassembly inspec- tion requirements of MIL-F-13926 form a part of the quality assurance provi si on s of thi s s p e ci fi cation , shall be as listed in RIL-STD-109. D ef i ni ti on s of ins pe c ti o ti te r 1x1 s 4. 2 First article (initial production) approval. The require- ment for fir
31、st article approval and the responsibility (Government or contractor) for first article testing shall be as specified in the contract. The sample for first article approval tests shall consist of three units. The sample shall be manufactured in the same manner, using the same materials, equipment, p
32、rocesses, and procedures as used in regular production. All parts and materials , including packaging and packing, shall be obtained froin the same soitrce of supply as used in regular production. 4. 2. 1 Government testing. When the Government is responsible for conducting first article approval te
33、sts, the contractor, prior to submitting the sample to the Government, shall inspect the sample to insure conformance to all the requirements of this specification. record of this inspection, including certificates of conformance for materials, shall be submitted with the sample. A 4.2.2 Contractor
34、testing. When the contractor is responsible for conducting first article approval tests, the sarnpIe shall be inspected by the contractor for all the requirements of this specification. The sample and a record of this inspection, including certificates of con- formance for materials, shall be submit
35、ted to the Government for approval. ins p e ct ion. The Government reserves the right to witness the contractors 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL- C - 50 742 (MU.) 8 August 1973 4. 3 Inspection provisions. 4. 3.1 Submission of pr
36、oduct. Unless otherwise specified herein or by the contracting officer, inspection lot size, lot formation and presentation of lots shall be in accordance with inspection and sampling procedures herein and submission of product provisions of MIL-STD-105. 4. 3.2 Examination and tests. 4,3.2.1 Compone
37、nts and- subassemblies. All components and sub- assemblies shall be inspected in accordance with the inspection provisions contained in the respective specification and Supplementary Quality Assur- ance Provisions (SQAP) listed in the technical data package (TDP). In the absence of SQAPs, the applic
38、able quality assurance provisions of MIL-F-13926 shall applb-. 4.3.2.2 First article testing. First article testing shall be con- ducted in accordance with tables III through V to determine compliance with 4.2. ment Quality Assurance Representative. materials, or inspection techniques previously app
39、lied are subject to change, or an adverse change occurs in performance capability of the unit, this shall be cause to cease those operations contributing to the change or failure until corrections have been made by the contractor and approved by the Government. All examinations and tests shall be wi
40、tnessed by the Govern- When manufactu-ing processes, 4.3.2.3 FunctionaL tests. The requirements and tests in table III shall be inspected on a 100 percent basis. All examinations and tests shall be conducted at the standard ambient temperature. 8 Provided by IHSNot for ResaleNo reproduction or netwo
41、rking permitted without license from IHS-,-,-Classifi cation 101. 102. 103. 104. 105. 106. 107. 108. Clas sifi- cation NIL-C-50742 (MU) 8 August 1973 TABLE III FUNCTIONAL TESTS Characteristics Conti nui ty RANGE and RESET switches RESET indicator RANGE indicator Reticle light control Azimuth drive t
42、rain backlash Elevation drive train backlash Sealing (i /2 hour) Requirements Test Para graph 3. 3.1.1 4. 6.2 3. 3.1.2 4. 6. 3 3.3.1.3 4.6.1 3.3.1.4 4.6. 5 3.3.1.5 4. 6. 6 3. 3. 1. 6 4. 6. 7 3.3.1.7 4. 6. 8 3. 3.3 4.6.10 I I TABLE IV SPECIAL SAMPLING - GENERAL Control Tests Fabrication 3.1 Applicabl
43、e drawings - General s pecifi - 3.2 MIL-F-I 3926 - visual Requi r em ent s T e s t Pa r a g ra p h visual cation 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license fr
44、om IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-50742 12 9977706 0330475 3 m MIL- C - 50742 (MU) 8 August 1973 4. 5.2.2. 1 Pressure tester, Special test equipment (STE) in accordance with Drawing F8565556, or equivalent, shall be pro
45、vided to check the sealing of the unit. 4.6 Test methods and procedures. 4.6.1 Test conditions. Unless otherwise specified, the test conditions shall be in accordance with the test facilities provisions of iVlL-F-13926. 4.6.2 Continuitv test. Perform resistance measurements between tl:e pins of J1 a
46、nd PI which are directly interconnected, to determine com- pliance with 3. 3. 1.1. CI. 6. 3 RANGE and RESET switches test. Ferform resistance measurements between the pins of J1 and between the pins of PI, as specified in table II, for each position of the RANGE and RESET switches to determine compl
47、iance with 3. 3. 1. 2. 4.6.4 RESET indicator test. Apply the t13 Vdc power as specified in table I, and observe the Lighting of the RESET indicator lamp to determine compliance with 3.3. 1. 3. 4. 6. 5 specified in table I, and then apply the logical zero signal type B of table I to JI-N. application
48、 of the logical signal to determine compliance with 3. 3.1.4. RANGE indicator test, Apply the 3.13 Vdc power as Observe the RANGE indicator lamp before and after 4.6. 6 Reticle light control test. Apply the t13 Vdc power as specified in table I. the shaft of potentiometer R1 full-range clockwise to
49、determine com- pliance with 3. 3. 1. 5. Measure the output voltage at P1-1 O while rotating 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL- C - 50742 (MI i ) 8 August 1973 4.6. 7 Azimuth drive train backlash test. Lock the azimuth output shaft in place. directions to dete
