The MCK-124A/224A/304A board in the METER™ series PXI measuring instruments is a clock generation and distribution module that supports four-way clock/local oscillator output, can achieve clock output amplitude attenuation and amplification, four-way reference clock output, and four-way trigger signal output with fast rise/fall time. It supports internal and external trigger modes and is widely used in test systems that require high-precision clocks and multi-board synchronization.