What happens when the master trigger is triggered?

What happens when the master trigger is triggered?

• A. The transmitter unit produces the sync trigger
• B. The range gate opens at the sweep start
• C. The PPI display clears
• D. The indicator processes the target data

Answer: (D)

The master trigger sets the timing for a radar sweep and tells the system to start turning raw echoes into usable information. When it fires, the indicator uses the received echo data to compute target data (like range and bearing) and refresh the display with those targets. In other words, the master trigger prompts the indicator to process the target data for the current sweep, which is why that option is the best fit. The other steps—sending a sync signal to the transmitter, opening the range gate at sweep start, or clearing the PPI—are parts of the overall cycle, but the direct action tied to the master trigger in this context is the indicator processing the target data.

The master trigger sets the timing for a radar sweep and tells the system to start turning raw echoes into usable information. When it fires, the indicator uses the received echo data to compute target data (like range and bearing) and refresh the display with those targets. In other words, the master trigger prompts the indicator to process the target data for the current sweep, which is why that option is the best fit. The other steps—sending a sync signal to the transmitter, opening the range gate at sweep start, or clearing the PPI—are parts of the overall cycle, but the direct action tied to the master trigger in this context is the indicator processing the target data.