1、MIL-6-85231 (1) 14 m 9777706 0434023 b I .- - i HIL-G-85231 (L./*- AMENDMENT 1 7 November 1985 MILITARY SPECIFICATION GUIDED WEAPON CONTROL GROUP OK-293A/AWW This amendment forms a part of Military Specification MIL-G-85231(AS) dated 30 October 1984, and is approved for use by the Naval Air Systems
2、Command, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. Page 7 - Delete “3.4.a“ in its entirety and substitute: a. Under standard conditions (see 3.3.101, the control group shall provide the regulated outputs as specified in Table II an
3、d the Appendix Page 30 Add “Appendix“ : APPEND 1 X DATA WORD REQUIREMENTS FOR GUIDED WEAPON CONTROL GROUP OK-293A/AWW 10. SCOPE. 10.1 Scope. This appendix details the data word requirements of the Guided Weapon75Xrol Group OK-293A/AWW. This appendix is a mandatory part of this specification. The inf
4、ormation contained herein is intended for compliance. 20. APPLICABLE DOCUMENTS. 20.1 This section is not applicable to this appendix. 30. REQUIREMENTS 30.1 16-BIT; digitally encoded word. The control group shall use a 16-BIT digitally encoded word format as shown below: MSB 8 SPARES LAST TWO - LSB -
5、 2ND - - SYNC ANT SEL - SYNC - 1 2 3 4 5 6 7-14 15-16 .- . 1 of 4 FSC 1430 DISTRIBUTION STATEMENT A: Approved for pub1 ic re1ease;distribution is un1 imi ted. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - MIL-G-5231 (1) 14 m 977990b OY34024 I MI
6、L-G-85231 (AS) X Where LSB is “Least Significant Bit“ and MSB is “Most Significant Bit,“ the aft antenna shall be selected if the third bit is a lone“; and the forward antenna shall be selected if the third bit is a zero.“ Eight spares shall be provided for future growth. The last two bits shall be
7、hardwired to a “zero.“ 30.2 - Data. “Sync“ and 12 bits of “Data“ with the last two bits tied to “zero.“ The first half of each bit shall be “Sync1 with the second half of each bit data being a “one“ or “zero.“ clock rate shall be 50 t4.4, -4.0 Hz. The data shall consist of a 16-bit parallel word wit
8、h two bits For Sync,“ the second half of each bit is Sync.“ The 30.3 Clock rate. The clock rate shall be determined by the 1300 Hz voltage controlled oscillator (VCO). square wave and then divided by 26 to obtain a 50 percent duty cycle. standard conditions the clock rate is as follows: The VCO sine
9、 wave output shall be converted to a During a. 1300k5Hz or 50t0.2 Hz for a “Sync.“ 26 b. 12025Hz or 46.23k0.2 Hz for a “Zero.“ 26 C. 13985Hr or 53.77k0.2 Hz for a “One.“ 26 During service conditions the clock rate is as follows: I a. 130016Hz or 50t0.62 Hz for a “Sync.“ 26 b. 1202t16Hz or 46.23-10.6
10、2 Hz for a “Zero.“ 26 C. 1398k16Hz or 53,7710.62 Hz for a “One.“ 26 30.4 Data definition (standard and service conditions). The data shall be defined for standard and servi ce condi ti ons as fol 1 ows : a. Standard conditions (1) A sync bit shall be defined as 1269 to.13.31 Hz. (2) A data zero shal
11、l be defined as 1197 to 1250 Hz. (3) A data one shall be defined as 1351 to 1403 Hz. 2 of 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-85231 (AS) b. Service conditions (1) A sync bit shall be defined as 1258 to 1342 Hz, (2) A data zero sha
12、ll be defined as 1186 to 1250 Hz. (3) A data one shall be defined as 1351 to 1414 Hz. 30.5 Word format. An example of the word format is specified in figure 7 and as follows: other data blts shall be a zero. The last two data bits, 15 and 16, shall be tied to zero permanently. 30.6 Format logic, For
13、mat logic shall be as specified in Table X for presently assigned weapons. a. Aft. Ant. shall be a one, the next data bit shall be a one, and all 9.2 TO 9.6 MSEC b- 9.7 TO 10.3 MSEC 10.4 TO 10.M MSEC “1“ SYNC “O“ BIT FUNCT - BIT TIME - 4 k- 4 PERIOD 48.5 TO 51.5MS I I I I i I i I ! I 0 I !i I ! I !I
14、 I : I /ol i, I LI! I A I I? I I6 I - FWD b A J SYNC AFT LSB 2ND MSB SPARES LAST TWO NOTES: 1, The 1 level shall be t4.7 to +5.3 volts dc. 2. The SYNC level shall be +2.35 to +2.65 volts dc. 3. The O level shall be 0.0 to t0.30 volts dc. FIGURE 7. Modulation waveform d Provided by IHSNot for ResaleN
15、o reproduction or networking permitted without license from IHS-,-,-MIL-G-85231 (1) 14 9777706 0363782 7 m MSB O O O 1 1 1 1 O MIL-G-85231 (AS) TABLE X, Format logic Spares 7-14 O O O O O o O O Channel Select Switch Letter SB 10 o1 11 O0 10 o1 11 O0 FWD AFT 2ND O or 1 O or 1 O or 1 O or 1 O or 1 O o
16、r 1 O or 1 O or 1 - Last Two O O O O O O O O - - Channel A C E A C E None Manual Format Phase I Phase I Phase I Phase II Phase II Phase II Future For AWN-7 Pod Preparing Activity Na vy -AS (Project No. 1430-N130) 4 of 4 1, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
