MODE CODES
- Management messages
- Command format, subaddress specific usage
- Mode codes supporting data
- Dynamic bus control
- Synchronize commands, usage to implement a heardbeat
- Transmit Status word and Transmit Last command use cases
- Interface with self tests in both RT and subsystems
- Transmitter shutdown commands used in redundant systems
SYSTEM ISSUES
- Using subaddress
- Double buffering
- Framing in the BC to support both periodic transfers and asynchronous transfers
REDUNDANT DATA BUS REQUIREMENTS
- Electrical isolation
- Dual standby redundant data bus operation
- Superseding commands
- High reliability requirements
TESTING
- Test plans described in 1553A handbook
- Using an analyzer to capture traffic
- Generating traffic to check how the system react in case of errors
- Data wrap around mechanism, remote loopback test
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