look @ this pic
how can I display the tuning range of a ring vco in Cosmos Scope, like this
is there a special command (in hspice or hspicerf) to calculate the frequency
or
is there a special tool in Cosmos Scope to measure the freq of a waveform?
thnx!
Then plot the file with extension ".mt0", set the x-axis to vtune.
Cosmos scope can also measure the frequency of a wave by measurement tool. You can access this tool by a button at the bottom of the window. Use hspice ".meas" command is better in this case.
Joined: 14 Feb 2008 Posts: 1038 Helped: 46 Location: At home
15 Apr 2008 16:09
Re: tuning range of vco in cosmos scope
Hi all,
I'm doing manually that task using an Excell Spreadsheet. I plotted manually the curve an I found a curve like this. I didn't saw something like that before. Is that kind of curves familiar in VCO ? I need your commments.
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I'm doing manually that task using an Excell Spreadsheet. I plotted manually the curve an I found a curve like this. I didn't saw something like that before. Is that kind of curves familiar in VCO ? I need your commments.
Generally speaking, No, it is not a familiar curve for a VCO, also it is not impossible for a VCO to have a curve like that. let us see your circuit
