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Armament Output Logic to Armament/Ordnance Input Logic |
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|  MIL-D-81347C(J$S)
(5)
The AOL shall terminate all normal Launch Commands
after 130 10% milliseconds and all Rocket Launch Commands after 640 10% milliseconds.
(6)
The AOL shall not accept a command from the computer
(i. e. , the AOL shall not raise the Output Data Request) during the period the AOL is exercising a
Launch Command or within 130 10% milliseconds after receipt of a Rocket Select or Arm Command.
(7) The AOL shall be self-initializing after any power interrup-
tion, (i. e. , the AOL shall insure that no output command shall be high for more than one millisecond
due to the random setting of flip-flops caused by the power interruption).
(8) Removal of the AOL subunit shall cause the Aircraft Arma-
ment system to revert to a reset state (i.e. , all Weapon Stations disarmed, Rocket Clear, and no
Launch Commands).
(9) The AOL shall detect and transmit to the AOIL the errors
described in 3.5.2.4.4.2 (4).
Interface Requirements
3.5.2.4.4.4
Word Formats - The AOL Word Formats are shown in Figures
3.5.2.4.4.4.1
through 82.
Signal Characteristics - Unless otherwise noted, signal levels
3.5.2.4.4.4.2
external to Logic Unit 2 are defined as follows:
Logical "0" = +4 1 volts
Logical "1" = 0.0 +0.5 -0. 0 volts
Maintenance Control Panel Subunit to Armament Output Logic -
3.5.2.4.4.4.3
Communications between the computer and the AOL shall be via the MC PL and in accordance with
Appendix I and 3.5.2.4.6. The MCPL shall provide the input amplifiers for Output Acknowl-
edge and data bits 0 hrough 29. "Data" shall be available to the AOL.
Armament Output Logic to Maintenance Control Panel Subunit -
3.5.2.4.4.4.4
The AOL shall provide the MCPL the input control and data lines for monitoring.
Armament Output Logic to Armament/Ordnance Input Logic
3.5.2.4.4.4.5
Error Signals - The AOL shall be capable of detecting and trans-
3.5.2.4.4.5.1
mitting to the AOIL the three types of errors indicated in 3.5.2.4.4.2(4). In addition, an inhibit
signal shall be transferred from the AOL to the AOIL. The inhibit signal shall be a logical "1"
during the time the Output Data Request is a logical "O" (see 3.5.2 .4.4.3.1 (6)).
The Type IV error signal (indicating an input word structure is
improper -- see 3. 5.2.4.4.2 (4) (a)) shall be a logical "1" for 0.5 microsecond (minimum): the trailing
edge of this pulse shall occur during the time the inhibit signal is a logical "1". Therefore, data com-
parison for a Type IV error shall be done during the time the Output Acknowledge is a logical "1".
The Type V error signal (indicating the redundant status logic
is not in agreement (see 3. 5.2.4.4.2 (4) (b)) shall be a logical "l" for an indefinite length of time.
Data comparison of the Armament Status registers shall be done continuously and the Type V error
signal shall be transmitted to the AOIL any time the registers do not agree.
The Type VI error signal (indicating the redundant launch logic
is not in agreement (see 3.5.2 .4.4.2 (4) (c)) shall be a logical "1" for a maximum of 640 10% milli-
seconds, and shall occur during the time the inhibit signal is a logical "l". Data comparison of the
Armament Launch Register shall be done during the time the registers are active.
142
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