ARMY MIL-C-70491 (2)-1990 CIRCUIT CARD ASSEMBLY DISPLAY PROCESSOR《电路板组装显示 处理器》.pdf

1、MIL-C-70491 (AR) AMENDMENT 2 12 MARCH 1990 MILITARY SPECIFICATION CIRCUIT CARD ASSEMBLY, DISPLAY/PROCESSOR This Amendment forms a part of Military Specification MIL-C-70491(AR), dated 8 May 1989, and is approved for use within the U.S. Army Armament, Munitions and Chemical Command and is available f

2、or use by all Departments and Agencies of the Department of Defense. PAGE 6 . *1. Delete existing 3.2.1. Add: 3.2.1. Functional. The display/processor circuit card assembly shall be tested using AN/USM-465 Genrad Tester or equivalent in accordance with Test Station Software-Display/Processor CCA: 93

3、79253. 3.2.1.2, line 1: Delete the word Ieither“. 3.2.1.2, line 2: Delete I1ortt and substitute “and“. PAGE 14 4.6.1, line 8. Delete the fourth sentence starting with Upong1 and substitute: “Upn completion of the 20 minute exposure , the temperature of the chamber shall be raised at the rate of 10C

4、18OF) per minute plus or minus l0C (1.8OF) to -4OoC (-40OF). At -4OoC, operating power shall be applied to the unit under test and shall continue to be applied until the end of each cycle. The chamber temperature shall then be raised at the rate of 10C (18F) per minute plus or minus IOC (1.80F) to

5、710C (+160OF) .I1 4.6.1, line 17: Delete “test in 4.6.3“ and substitute “tests in 4.6.3 through 4.6.7“. 4.6.11 line 18: Delete “3.2.1.1“ and substitute “3.2.1.1 through 3.2.1.5, inclusively“. 4.6.2, line 10: Delete “4.6.3“ and substitute “4.6.3. through 4.6.7“ . 4.6.2, line 11: Delete “3.2.1.111 an

6、d substitute “3.2.1.1. Esc 1220 through 3.2.1.5, inclusively“. AMSC N/A DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited . . lof2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70491(AR) AMENDMENT 2 4. Change 4.

7、6.3. a. Delete the existing 4.6.3. and Table IV. b. Add the following: 4.6.3 Performance. The performance of the CCA, Display/ Processor shall be tested using aAN/USM-465 Genrad Tester or equivalent in accordance with Test Station Software- Display/Processor CCA:9379253. PAGE 18 4.6.4: Add new last

8、sentence: “The last inspection/test performed prior to acceptance and delivery shall be the memory read cycle test on the EPROM (reference EPROM Program Cycle Test paragraph number 4.6.6).“ PAGE 19 4.6.6, line 2: Delete “Figure 3.4“ and substitute “Figure 4“. Custodian: Army-AR Preparing activity: Army-AR (Project 1220- 371) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-