If a signal deflection is 10mm and the input voltage is 50uV, what would the sensitivity setting be?

Prepare for the Registered Polysomnographic Technologist Exam. Use interactive flashcards and multiple choice questions, each with hints and explanations. Ace your certification test with ease!

To determine the sensitivity setting, one can use the relationship established in electroencephalography and polysomnography, which relates signal deflection to input voltage. Sensitivity is defined as the amount of millimeters the pen moves for every microvolt of input voltage.

In this case, if the signal deflection is 10mm and the input voltage is 50 microvolts, the sensitivity setting can be calculated by dividing the signal deflection by the input voltage. Specifically, 10mm deflection for 50µV input yields a sensitivity of:

Sensitivity = Signal Deflection (mm) / Input Voltage (µV)

Sensitivity = 10mm / 50µV

Sensitivity = 0.2 mm/µV

To convert this sensitivity into a more conventional format, which is usually represented as the amount of voltage that corresponds to a specific distance on the graph, you can invert the previously calculated value. A sensitivity of 0.2 mm/µV means that for every 1 µV, the pen moves 0.2 mm, implying that to get a 10 mm deflection, the input voltage would correspond roughly to 50 µV.

To convert back and find the sensitivity in terms of µV per

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