In order to consistently reproduce the video information at a high resolution, the monitor must have a wide video bandwidth. In the electronics industry, engineers use a term called "DECIBELL" (abbreviated DB.) to quantify the video signal input level to the luminence or light level of the display (output). In order for the term to be meaningful for comparison purposes, the bandwidth expressed in mhz. must be within +- 3DB . Simply stated, for a fixed given input voltage(.07v pp), the light output on the display must remain within a relatively consistant level of +- 3db for signals from 0 to quoted bandwidth in MHZ.