The Model 41 Interface accepts analog signal from the Zeus and ______ the line.

• A. Boosts
• B. Terminates
• C. Wets
• D. Passes

Answer: (C)

The key idea is line conditioning: before an analog signal can travel cleanly along a transmission path, the interface often needs to prepare or “condition” the line so it has a defined state and impedance. The Model 41 Interface does this by “wetting” the line, meaning it applies a small bias/load to keep the line from floating and to stabilize the signal as it rides onto the line from the Zeus source. This helps reduce noise, drift, and mismatches that can distort or degrade the signal.

Boosting would change the signal level, not the line condition. Terminating would place a fixed load to prevent reflections, which is a different function. Passing would leave the line largely unchanged. Wetting is the action that best matches the idea of preparing the line for reliable analog transfer.