By Wolfgang Maichen
As many circuits and functions now input the Gigahertz frequency variety, actual electronic timing measurements became the most important within the layout, verification, characterization, and alertness of digital circuits.
To be triumphant during this box an engineer must comprehend instrumentation, dimension thoughts, sign integrity, jitter and timing ideas, and data. This booklet provides a compact, practice-oriented evaluate on most of these topics with emphasis on useable techniques and real-life guidelines.
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Extra info for Digital Timing Measurements: From Scopes and Probes to Timing and Jitter (Frontiers in Electronic Testing)
But while for skin effect it is the self-induction between the partial current in the signal conductor, proximity effect results from the interaction between signal current and return current. Its effect is to make the current distribution inhomogeneous, with the larger amount of current flowing on the side closer to the other conductor, which also reduces the effective cross section and increases the ohmic resistance. e. the insulator between signal conductor and return conductor (center conductor and shield in the case of a coaxial cable) consists of molecular dipoles.
87, and the delays to (a) 345 ps, (b) 435. This is already a difference of 90 ps, definitely not negligible in a high-accuracy measurement setup. It also makes clear that if we have to characterize or calibrate this setup, we should do this with signals that have a very similar rise time to the signals we want to measure! 1 1 10 TR ,edge TR , filter Figure 9: The delay of the output signal depends mainly on the ratio between signal rise time and filter rise time (or signal time constant and filter time constant).
G. 50% pre-trigger where the trigger position is in the middle of the record and we see some part of the waveform before as well as some part after the trigger point. One weakness of this acquisition process is the time required to transfer the data record from the capture memory into the main memory, to process and display it. During this time no data is captured, and this time span may be many times longer than the time required to capture the record. In other words, we may only get a few snapshots of the waveform per second, which “ “ 27 To keep things more comparable to analog scopes, this setting is usually called “horizontal position”.
Digital Timing Measurements: From Scopes and Probes to Timing and Jitter (Frontiers in Electronic Testing) by Wolfgang Maichen