Patent ID: 6791337
Filing Date: 2004-09-14
Classification: H04B

Abstract:
A portable, hand-held meter for measuring direct current (DC) attenuation in a cable-attenuator assembly, comprising:a housing, a meter unit for displaying attenuation value located within said housing, a voltage comparator located with said housing, a read/adjust switch located within said housing, said meter unit being operatively connected to said read/adjust switch, means for applying a reference voltage to said voltage comparator and said read/adjust switch, said meter unit and said voltage comparator being adapted to be operatively connected to an associated cable-attenuator assembly for measuring direct current attenuation therein, wherein said voltage comparator is adapted to apply an output thereof as an applied voltage to first end of said cable attenuator assembly, and receive a feedback voltage from a second end of the cable attenuator assembly to compare with said reference voltage, so as to produce a control circuit which adjusts the applied voltage until the feedback voltage equals the reference voltage, and wherein said meter unit is adapted to read the reference voltage when the read/adjust switch is in an adjust position, and read the applied voltage at the first end of the cable attenuator assembly when the read/adjust switch is in a read position, said meter unit being adjustable to unity with respect to the reference voltage when the read/adjust switch is in the adjust position.