Which line describes signal conditioning input that converts frequency of pulses to DC voltage?

Which line describes signal conditioning input that converts frequency of pulses to DC voltage?

• A. F/U
• B. L/U
• C. I/O
• D. A/D

Answer: (A)

Converting the frequency of pulses into a DC voltage is done with a frequency-to-voltage converter. This signal conditioning block takes a pulse train and outputs a voltage proportional to its frequency, which can then feed an analog input or display. That makes the line labeled as frequency-to-voltage the best description for this function. The other lines describe different roles: analog-to-digital would convert an existing voltage to a digital value, not convert pulse rate to DC; I/O is just input/output interfacing; the remaining label isn’t a standard term for this conversion.

Converting the frequency of pulses into a DC voltage is done with a frequency-to-voltage converter. This signal conditioning block takes a pulse train and outputs a voltage proportional to its frequency, which can then feed an analog input or display. That makes the line labeled as frequency-to-voltage the best description for this function. The other lines describe different roles: analog-to-digital would convert an existing voltage to a digital value, not convert pulse rate to DC; I/O is just input/output interfacing; the remaining label isn’t a standard term for this conversion.