What is the primary purpose of hardware diversity in NANTeL channel design?

What is the primary purpose of hardware diversity in NANTeL channel design?

• A. Increases the cost without improving safety
• B. Decreases maintenance requirements
• C. Reduces the probability that a single fault affects all channels
• D. Slows down protection response

Answer: (C)

Hardware diversity in channel design is about preventing a single fault from taking down all protection paths by using different hardware implementations for the channels. When channels don’t share the same components or architectures, failures are less likely to be correlated—a defect, environmental stress, or fault in one hardware path is unlikely to affect every other path in the same way. This dramatically reduces the chance that a single fault causes all channels to fail, preserving the protection function even if one path encounters an issue. While diversity can affect cost or maintenance and must be managed to avoid slowing responses, the primary benefit is lowering the probability that a single fault disables all channels.

Hardware diversity in channel design is about preventing a single fault from taking down all protection paths by using different hardware implementations for the channels. When channels don’t share the same components or architectures, failures are less likely to be correlated—a defect, environmental stress, or fault in one hardware path is unlikely to affect every other path in the same way. This dramatically reduces the chance that a single fault causes all channels to fail, preserving the protection function even if one path encounters an issue. While diversity can affect cost or maintenance and must be managed to avoid slowing responses, the primary benefit is lowering the probability that a single fault disables all channels.