What is telemetry?

• A. A method of encoding data as video
• B. Electronic signals are converted into audible signals and transmitted
• C. A device that monitors temperature only
• D. A navigation method

Answer: (B)

Telemetry is the process of collecting measurements from remote sensors and sending those measurements to a distant location for monitoring. It involves turning the sensed data into electronic signals that can be transmitted over a distance and then decoded at the receiving end so it can be interpreted. The option describing electronic signals being converted and transmitted captures this idea, since the essence is sending data from a remote source to a monitoring system. The mention of “audible” signals isn’t essential to the concept, as telemetry can use various transmission methods, not just sound. The other choices describe encoding data as video, a single device that monitors temperature, or a navigation method, none of which describe the remote transmission of sensor data.