Low Cost Jitter Measurement and Analysis with 53230A Counter
應用說明
Introduction
During data recovery, the relationship of the clock signal edge to the bits in the data stream is critical for error-free recovery. Ideally, the clock edge (rising or falling) on which recovery begins should occur at the center of the data bit. This relationship is shown in Figure 1. For the purposes of this paper, the clock edge of interest is the negative (falling) edge.
When jitter causes the clock edge to drift or shift from the intended center position, bit errors can occur. In this measurement brief, we will explain how to use the Keysight Technologies, Inc. 53230A counter to measure, calculate, and analyze jitter. Specifically, this includes:
- Configuring the counter for time interval measurements.
- Using the counter’s statistics function to measure or calculate the jitter based on the time interval measurements.
- Creating a histogram to show jitter type and distribution.