Data eye monitor

Details Data eye monitor Data eye monitor

1982-02-26

1984-10-02

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

328147, 371 22, 375 76, H04L 1322

Patent

active

044752105

ABSTRACT:
The data eye monitor includes a pair of comparators which compare the data input signal with a fixed reference voltage and a variable reference voltage with the resultant output of these two comparators being clocked into a digital comparator providing negative pulses representing the difference between the outputs of the two comparators. The negative pulses are coupled to an integrator to which a positive current source is coupled with the integrator providing the variable reference voltage for one of the comparators and also the output voltage of the monitor since the variable reference voltage is proportional to the opening of the data eye.

REFERENCES:
patent: 2582018 (1952-01-01), El-Said
patent: 4034340 (1977-07-01), Sant' Agostino

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