Patent ID: 8004272
Filing Date: 2011-08-23
Classification: G01R

Abstract:
1. A digital multimeter comprising: a. a processor; b. a selector for choosing measurement criteria, said selector being operatively coupled to said processor; c. an input operatively coupled to said processor, said input being configured to monitor a device; d. a backlit display operatively coupled to said processor; e. a sensor operatively coupled to said digital multimeter proximate said display; wherein said processor is configured to produce a first data signal containing information about the device being monitored; said first data signal is modulated to produce an optical indicator on said backlit display that blinks between a first state and a second state that differs from said first state so that said sensor may detect said first and second states; wherein said sensor is configured to detect said first and said second states and generate a second data signal representative of said first modulated data signal.