Multi-Channel Lock-In Amplifier Synchronization for Accurate Aggregation

The patent combines multiple channels within a single lock-in amplifier device and synchronizes their operation through a shared clock signal. This merging approach allows aggregated measurements while eliminating timing differences between channels, as all channels are controlled by the same time reference. The synchronized channels work together to measure multiple aspects of the measured object simultaneously without the timing degradation that would occur with separate devices.

The patent uses a periodic clock signal to synchronize the operation of multiple channels at regular time intervals. This periodic synchronization ensures that all channels sample their respective signals at precisely aligned time points, eliminating time shifts between channels. The regular periodic action of the clock signal maintains consistent timing relationships throughout the measurement process, preventing distortion of time-varying properties while preserving high measurement precision.

The patent introduces a clock signal as an intermediary that mediates the timing between multiple channels. This clock signal acts as a common reference that coordinates the operation of all channels, ensuring they produce their output signals at synchronized time points. The intermediary clock signal enables external aggregation of channel results to proceed with high quality, as the timing differences that would normally degrade aggregation are eliminated by this mediating time reference.