What components are typically included in a signal conditioner, and what function does each serve?

• A. Amplifier (gain/level), filter (noise reduction), isolation (galvanic isolation), analog-to-digital or digital-to-analog conversion (signal conversion), sometimes summing or integrating.
• B. A display panel and power regulation only.
• C. A temperature sensor and a pressure gauge only.
• D. Amplifier, Filter, Isolation, and ADC/DAC, plus sometimes summing or integrating.

Answer: (A)