Pulse Shaper Circuit With Dual-Threshold Reset for X-Ray Accuracy

The reset operation is segmented into two distinct phases: a first discharge phase that resets the integrator output to a reference level, and a second discharge phase that further discharges the integrator to eliminate residual offsets. This segmentation allows each phase to address specific aspects of the offset problem separately, improving overall measurement accuracy.

The first discharge phase acts as a preliminary action that prepares the integrator by resetting it to a known reference level before the second discharge phase eliminates remaining offsets. This preliminary reset ensures that subsequent measurements start from a consistent baseline, reducing measurement errors.

The reset process uses periodic action with two distinct discharge phases separated by a reference level detection step. The first discharge phase operates continuously to reset the integrator, while the second discharge phase is triggered periodically when the reference level is reached. This periodic structure ensures complete offset elimination without requiring continuous high-current discharge.

The reset circuit dynamically adjusts its discharge current in two stages: a high current during the first discharge phase for rapid resetting, and a controlled current during the second discharge phase for precise offset elimination. This dynamic current adjustment optimizes the balance between reset speed and measurement accuracy.