Which statement correctly describes the final digital output stage of PSP after voltage generation?

• A. The digital output is a straight readout of the light emitted
• B. The voltage is converted into a digital signal
• C. The digital signal is converted into an analog waveform
• D. The green light is captured as data

Answer: (B)

The process being tested is how the light signal from the PSP is turned into digital image data. When the plate is read, the stored energy is released as light. A photodetector then converts that light into an electrical signal, a voltage proportional to the light intensity. This analog voltage is then fed into an analog-to-digital converter, which turns it into digital data that the computer uses to form the image. So the final digital output stage is the conversion of that voltage into a digital signal. The other statements miss the actual data path: light is not read directly as digital data, there isn’t a step that converts digital back into analog here, and the data isn’t simply “green light captured as data” but the voltage from the light is what gets digitized.