During a routine pre-operational RAWS check, which step comes immediately after sensors and cables are checked?

• A. Power status.
• B. Self-test.
• C. Data transmission test.
• D. Log results.

Answer: (B)

After confirming that all sensors and cables are properly connected, running a self-test quickly verifies that the device’s internal hardware and firmware are functioning correctly. This built-in diagnostic exercise checks processors, memory, sensor interfaces, and fault indicators, ensuring there are no obvious faults before proceeding with further checks like power status, data transmission, or logging. If the self-test passes, you can confidently move on to power-on checks and subsequent tests; if it flags issues, you pause to troubleshoot before continuing.