Patent ID: 6778931
Filing Date: 2004-08-17
Classification: H04L,H04M

Abstract:
A test and measurement instrument for multi-channel mask testing comprising:a group of M signal input terminals for receiving M signal input from a circuit under test; an acquisition system coupled to said M signal input terminals for acquiring samples of a waveforms at each of said M signal input terminals; a controller for generating mask pixel data defining a mask; a memory for storing said waveform samples and said mask pixel data, said mask pixel data including an identification code; comparison circuitry for reading a memory location, and determining if any acquired waveform simple of said signal from each of said M signal input terminals is to be written into a memory location currently storing a mask pixel, causing a mask violation; and display circuitry for simultaneously displaying a representation of said mask and all of said waveforms from said M signal input terminals.