When using a sensitivity setting of 5 µV/mm, how much pen deflection is produced by a 75-µV signal?

When using a sensitivity setting of 5 µV/mm, how much pen deflection is produced by a 75-µV signal?

• A. A. 5 mm
• B. B. 7 cm
• C. C. 10 cm
• D. D. 15 mm

Answer: (D)

To determine the pen deflection produced by a 75-µV signal at a sensitivity setting of 5 µV/mm, it is important to first understand how the sensitivity setting affects pen movement. The sensitivity setting indicates how much deflection in millimeters is produced per microvolt of electrical signal. In this scenario, a sensitivity setting of 5 µV/mm means that for every 5 microvolts of signal, the pen will deflect by 1 millimeter. To calculate the total deflection caused by a 75-µV signal, you can use the following formula: Pen deflection (mm) = Signal (µV) / Sensitivity (µV/mm). Plugging the values into the formula gives: Pen deflection (mm) = 75 µV / 5 µV/mm = 15 mm. Therefore, a 75-µV signal at a sensitivity of 5 µV/mm results in a pen deflection of 15 mm, which confirms that the correct answer is indeed 15 mm. This demonstrates a clear application of the principles of signal measurement in the context of sleep technician practices, illustrating how sensitivity settings directly relate to the readings observed on a recording device.

To determine the pen deflection produced by a 75-µV signal at a sensitivity setting of 5 µV/mm, it is important to first understand how the sensitivity setting affects pen movement. The sensitivity setting indicates how much deflection in millimeters is produced per microvolt of electrical signal.

In this scenario, a sensitivity setting of 5 µV/mm means that for every 5 microvolts of signal, the pen will deflect by 1 millimeter. To calculate the total deflection caused by a 75-µV signal, you can use the following formula:

Pen deflection (mm) = Signal (µV) / Sensitivity (µV/mm).

Plugging the values into the formula gives:

Pen deflection (mm) = 75 µV / 5 µV/mm = 15 mm.

Therefore, a 75-µV signal at a sensitivity of 5 µV/mm results in a pen deflection of 15 mm, which confirms that the correct answer is indeed 15 mm. This demonstrates a clear application of the principles of signal measurement in the context of sleep technician practices, illustrating how sensitivity settings directly relate to the readings observed on a recording device.