At what interval does the PASS calculate breathing rate and air consumption after initial start?

At what interval does the PASS calculate breathing rate and air consumption after initial start?

• A. Initially 3 minutes, then every 30 seconds
• B. Every 60 seconds
• C. Every 2 minutes
• D. Every 5 minutes

Answer: (A)

Breathing rate and air consumption are used by the PASS to estimate how long your remaining air will last and to trigger alarms as that estimate changes. After you start, the device first needs a short period to establish a stable baseline, then it updates the calculation frequently to reflect changes in effort. The chosen timing means you get an initial 3-minute window to gather accurate breathing data, followed by recalculations every 30 seconds, so shifts in pace or exertion are quickly reflected. Recalculating every 60 seconds or less often (2 or 5 minutes) would be slower to respond and could delay warnings during dynamic activity.

Breathing rate and air consumption are used by the PASS to estimate how long your remaining air will last and to trigger alarms as that estimate changes. After you start, the device first needs a short period to establish a stable baseline, then it updates the calculation frequently to reflect changes in effort. The chosen timing means you get an initial 3-minute window to gather accurate breathing data, followed by recalculations every 30 seconds, so shifts in pace or exertion are quickly reflected. Recalculating every 60 seconds or less often (2 or 5 minutes) would be slower to respond and could delay warnings during dynamic activity.