ARMY MIL-C-71042 (2)-1998 CIRCUIT CARD ASSEMBLY LOGIC 11784523《电路板逻辑组装 11784523》.pdf

1、MIL-C-7L042 (2) = 0b 20b5875 442 m I INCH -POUND I MIL-C-71042 (AR) AMENDMENT 2 27 March 1998 SUPERSEDING AMENDMENT 1 26 August 1994 MILITARY SPECIFICATION CIRCUIT CARD ASSEMBLY, LOGIC: 11784523 This amendment forms a part of MIL-C-71042(AR), dated 14 February 1992, and is approved for use by the U.

2、S. Army Armament, Research, Development and Engineering Center, and is available for use by all Departments and Agencies of the Department of Defense. PAGE 4 * 3.6.5: Delete “+/- 12Vdc“ and substitute “+ 12Vdc“ PAGE 5 3.6.6: Delete “3.5.2 and 3.5.3“ and substitute “3.6.2 and 3.6.3“ * Delete, 2 place

3、s: “+12+/-O. 1Vdc“ and substitute “+1.5Vdc +/-. 1“ 3.6.7: Delete “3.5.2 and 3.5.3“ and substitute “3.6.2 and 3.6.3“ * 3.6.8.1, Subparagraph c: Delete “39 +/-5 ms“ and substitute “44 ms +/-5 ms“ AMSC/ NA 1 of 4 FSC 5998 DISTRIBUTION STATEMENT A. Approved for public release: distribution is unlimited.

4、 Licensed by Information Handling ServicesMIL-C-71042 (AR) AMENDMENT 2 3.6.8.1, Subparagraph d: Delete “3.5 +/- .5 msN and substitute “5 +/- .625 ms“ * 3.6.8.2a: Delete from PIN B “11.6 Vdc min after 11 +/- 2 secs and substitute “11.6 Vdc min After 11 +/- 2 secs“ . PAGE 6 3.7: After drawing number 1

5、1785556, add “Note 1“ PAGE 7 * Delete: “Figure 1“ and substitute new “Figure 1“ (see page 4) PAGE 13 4.7.3.1.1, Subparagraph h: Delete 8.36 +/- 0.1 Vdc and substitute 8.36 +/- 0.45 Vdc“ PAGE 15 * 4.7.3.1.4d Delete: “The voltage shall be + 0.75 Vdc maximum after 11 +/- 2 seconds. and substitute “The

6、voltage shall be +0.75 maximum. After 11 +/- 2 seconds: PAGE 16 * 4.7.3.1.7.2, Subparagraph h: Delete 39 +/- 5 ms“ and substitute “44 ms +/- 5 ms“ Subparagraph j: Delete 3.5 +/- .5 ms“ and substitute 5 +/- .625 ms“ 2 Licensed by Information Handling ServicesMIL-C-71042 (AR) AMENDMENT 2 PAGE 17 * 4.7

7、.3.1.7.4 Delete in its entirety and substitute the following: ”4.7.3.1.7.4 Function switch in position 3 (simulated) test to meet requirements of 3.6.8.3 a. b. d. e. f. g- h. i. C. 1. k. 1. m. n. O. P- q. Repeat 4.-7.3.1.7.l.b, c, and d. Remove pin S and J from GND. Short pin L to GND. Remove 12 Vdc

8、 from pin E Measure the voltage at pin C. The voltage shall be 1.5 Vdc maximum Measure the voltage at pin P, and B. The voltage shall be O Vdc +/- .1 Vdc Measure the voltage at pin M, N, and R. The voltage shall be 12 Vdc t/- .1 Vdc Apply a pulse of +12 Vdc amplitude and 1.0 ms pulse width at pin X

9、After 1 sec. short pin C to GND. simulate target leaving upper limit After 3 sec. open pin P to GND. simulate target at lower limit After 8 sec. short pin P to GND. simulate target leaving lower limit After 4 sec. open pin C to GND. simulate target at upper limit Measure the pulse at pin B. Amplitud

10、e with a pulse width of 1.0 to 1.5 +/- .2 sec. Measure the pulse at pin M. The time from the hit pulse to the falling edge of the pulse at pin M shall be 11 +/- 2 sec. with a pulse width of 3 to 5 sec. Measure the pulse at pin R. This pulse shall fall to O Vdc at the hit pulse and rise 4 +/- .5 sec.

11、 later. Measure the pulse at pin P. This pulse shall rise to 1.2 Vdc, 4 sec. after the hit pulse and fall again 8.1 sec. later. Measure the pulse at pin N. This pulse shall rise to 12 Vdc 4 sec. after the hit pulse and fall again 7 +/- 2 sec. later” The pulse shall be + 12.0 Vdc 3 Licensed by Inform

12、ation Handling ServicesMIL-C-71042 (2) W 0b 2065878 151 MIL-C-71042 (AR) AMENDMENT 2 PAGE 7 Figure 1. Voltage Outputs per Paragraph 3.6.8.3 The margins of this amendment are marked with an asterisk to indicate where changes (additions, modifications, corrections, deletions) from the previous amendme

13、nt were made. and the Government assumes no liability whatsoever for any inaccuracies This was done as a convenience only Bidders and contractors are cautioned to evaluate this document based on the entire content marginal notations and relationship to the last in these notations. the requirements of irrespective of the previous amendment. . Custodian Amy-AR Preparing activity Arnry-AR (Project 5998-A087 ) 4 Licensed by Information Handling Services