SYSTEM AND METHOD FOR COMPENSATING DARK CURRENT

摘要

A compensating current is applied at one or more points in a signal processing path to compensate for one or both of a dark or offset current present in an input signal. In certain implementations, the dark or offset current is present in a signal generated by a photomultiplier device. The dark or offset current may be monitored in an output of the signal processing path and, the monitoring being used to determine how much compensation is needed in the signal processing path and to allocate where in the signal processing path the compensation current will be applied.

主权项

1. A detector module, comprising:
an application specific integrated circuit (ASIC) that comprises:
one or more channel inputs configured to receive respective analog inputs from one or more photo-sensors; andone or more amplifiers configured to process the analog inputs to generate an output signal; and a controller configured to measure a dark current present in the output signal; to determine a compensation current sufficient to counter the dark current; and to apply the compensation current through one or more of the amplifiers.