Enter the max signal and the total dark noise into the calculator to determine the dynamic range of a spectrometer.

## Dynamic Range Formula

The following formula is used to calculate a dynamic range.

DNR = MS / DN

- Where DNR is the dynamic range
- MS is the max signal when light is entering the spectrometer
- DN is the dark noise, or the signal registered when no light is present

## Dynamic Range Definition

A dynamic range is a measure of the ratio of a maximum signal to the dark noise of a spectrometer.

## Dynamic Range Example

How to calculate dynamic range?

**First, determine the maximum signal.**Measure or calculate the maximum signal.

**Next, determine the dark noise.**The dark noise is calculated by measure 25-50 dark level measurements and calculating the RMS level with the standard deviation for each wavelength.

**Finally, calculate the dynamic range.**Calculate the dynamic range using the formula above.

## FAQ

**What is a spectrometer?**

A spectrometer is an instrument that can detect wavelengths of material at very small scales that are used to determine the composition of the materials.