DMT drivers provide selectable bandwidth for maximizing resolution or response time. Resolution is defined as the smallest reliable measurement that a system can make. The resolution of a measurement system must be better than the final accuracy the measurement requires. If you need to know a measurement to within 0.000,002 inches, then the resolution of the measurement system must be better than 0.000,002 inches. The primary determining factor of resolution is electrical noise.
Electrical noise appears in the output voltage causing small instantaneous errors in the output.
This noise is inherent in electronic components and can only be minimized, but never eliminated. The amount of noise in the output is directly related to bandwidth. There is much more noise in the higher frequencies than in the lower frequencies. If the higher frequencies are filtered before the output, the result is less noise and better resolution. When examining resolution specifications it's critical to know at what bandwidth the measurements were taken.