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| INTRODUCTION |
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History |
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Utilization domain |
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Objectives of this bus |
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Protocol overview |
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The 3 node types: BC, RT and BM |
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Multiplex selection criteria |
| PHYSICAL LAYER |
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Introduction to differential transmission |
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1553B transmission medium |
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Stubbing |
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Connecting a terminal to a backbone, long stub |
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Connection a terminal to a backbone, short stub |
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Multi-stub couplers |
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Terminal electrical characteristics |
| LINK LAYER |
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Terminal operation |
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Manchester bi-phase coding scheme |
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Word formats, SYNC pattern |
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Word validation |
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Command word detail |
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Data word detail |
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Status word detail, studying various sequences in order to explain Status flags |
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Terminal architecture, word controller, message controller, frame controller |
| MESSAGE FORMATS |
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Remote Terminal operation, assigning an address |
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The 10 message types |
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Point-to-point messages |
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Broadcast messages |
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Studying various sequences explaining the way of transferring data from terminal to terminal |
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Message timings, taking into account the round-trip delay |
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Illegal commands vs invalid commands |
| MODE CODES |
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Management messages |
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Command format, subaddress specific usage |
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Mode codes supporting data |
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Dynamic bus control |
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Synchronize commands, usage to implement a heardbeat |
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Transmit Status word and Transmit Last command use cases |
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Interface with self tests in both RT and subsystems |
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Transmitter shutdown commands used in redundant systems |
| SYSTEM ISSUES |
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Using subaddress |
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Double buffering |
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Framing in the BC to support both periodic transfers and asynchronous transfers |
| REDUNDANT DATA BUS REQUIREMENTS |
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Electrical isolation |
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Dual standby redundant data bus operation |
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Superseding commands |
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High reliability requirements |
| TESTING |
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Test plans described in 1553A handbook |
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Using an analyzer to capture traffic |
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Generating traffic to check how the system react in case of errors |
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Data wrap around mechanism, remote loopback test |
