Jun 5, 2016 · A waveform is a representation of physical quantity such as voltage or a current over time. If this physical quantity carries information then it is a signal. In practice, however, the terms signal and waveform are often used synonymously.

You need to save the waveform/dataset as a .wlf file. To tell Modelsim to capture all signal values in the design you can do a log -r /*. Afterwards you can open up the specific waveform/dataset .wlf either through the GUI or by typing vsim -view <some_name>.wlf in the console.

Mar 1, 2022 · This is the expected waveform for MLT-3 encoding as used on 100BASE-TX. The full test suite is rather long and impractical to reproduce in this post. You may compare with the eye mask specified in the standard as a first check given just the eye diagram.

Aug 14, 2019 · 100BASE-TX, the most common 100BASE in use today (and what's likely being used in your setup), uses a PAM-type variant called MLT-3. Below is a typical MLT-3 waveform. Power over Ethernet (PoE) Power over Ethernet (PoE) injects a DC bias of about 48V onto the signal pairs to carry power to the far-end device.

Apr 7, 2018 · Either adjust the runtime of the simulation or zoom in on the waveform so you can actually see the entire waveform cycles. Then click on part of the cycle and drag your mouse the the exact same point to the next cycle - the bottom of the waveform window will show the frequency of the distance between these two points.

May 21, 2012 · This is called Fourier analysis (if the original waveform is repeating) or Fourier transform (for any waveform). In case of a repeating waveform (like a square wave), when you do Fourier analysis you find that all the sines that compose the waveform have frequencies that are an integer multiple of the frequency of the original waveform.

Apr 24, 2013 · standardized transient impulses (or sometimes it's called a waveform). But what does it actually mean. Why is there a multiplier in front of the time unit? The quoted line above is constantly mentioned in surge testing document. But no where in the document does it mention what is the meaning of it. Most Google search results point to Datasheet ...

Oct 26, 2019 · For DO-160, there are Waveform 3, 4, 5A&B, and each waveform has its own requirement. Can some please give me an example on how to check if the tvs diode complies with each waveform. I am also worried about certain phrase such as pin injected, cable injected, and multiple burst, single burst. I don't know what is going on. Please help out.

Mar 3, 2017 · The source waveform (.wlf) file is commonly generated by any modelsim simulation and saved, when you exit vsim, under vsim.wlf unless another name was specified. Once you have your waveform in .vcd format, you can import it in any waveform viewer of choice and style its display according to your preference.

Apr 29, 2021 · I have a customized Pulse pattern and I would like to have it in repetition. Does anyone know how we can establish that in LT spice?