All serial data streams and clocks have jitter (the difference between the arrival of an edge and the expected time of arrival). The jitter you see on an oscilloscope is a function of the signal's timing jitter and amplitude noise, plus the jitter and noise that the oscilloscope adds to ...
Total Jitter Components A good technique to measure TJ uses a high-end digital sampling oscilloscope. This oscilloscopes need to have a better noise floor than the device under test, otherwise the performance of the device under test would be degraded and worsen by the noise of the oscilloscope...
then the rise time of the oscilloscope and the probe needs to be less than 32% or 46% of the FET rise time, respectively. Stating it differently, the instrumentation should be 3.1 or 2.2 times faster than the FET rise time, respectively. ...
How to Measure AC Signals Over DC Signals Measuring small AC signals over large DC signals requires a low-noise, high-bit ADC oscilloscope. Learn how a low-noise, high-bit ADC oscilloscope can help accurately measure AC signals over DC signals. ...
The timing diagram of the PLL’s data sheet should be consulted to determine data setup time, clock speed, pulse width, and other specifications. Be sure to leave enough margin to ensure that the timing requirements are met under all conditions. An oscilloscope should be used to check to see...
Read our guide (with video) on how to choose the best oscilloscope (also called an "oscope") for your unique needs, including bandwidth, rise time, sample rate, channel density and triggering
The characteristic of encoder jitter is that the jitter will only appear on one of the channels. If the signals appear to be jittery in all of the channels, it could indicate trouble with the oscilloscope or an error other than encoder jitter. If it is determined as an encoder jitter, the...
Designing power-efficient smart devices requires detailed analysis of device power consumption patterns. Learn how to optimize battery life using battery emulation software and hardware.
On the other hand, clock-jitter analysis traditionally derives jitter from a phase noise analyzer due to its inherently lower instrument noise floor. Since an oscilloscope and phase noise analyzer observe jitter differently, obtaining the same value from both instruments can be challenging. Thi...
When building a test system, one may need to measure more signals than a single oscilloscope can capture with its available channels. A common approach to increase the number of oscilloscope channels available in a test system is to combine multiple oscilloscopes. Applications ...