i want to plot current across a diode and resistor .but i am confused to plot vi chara by math function.what is" to and t1"" in math function used for.is their any other way to plot current directly.what is meant by usage of shunt resistor to plot current.
You can't measure current directly in Scopy, but you can use a shunt resistor. This means that you have to connect a resistor in series with the load ( in this case the diode) and measure the voltage drop across it. To obtain the current apply Ohm's law (V=i*R).
t0 and t1 are the variable signals that you get on oscilloscope CH1 and CH2 respectively.
Suppose that you measure the voltage across the shunt resistor on CH1, in the math channel you will divide t0 ( voltage represented on CH1) to the resistance of the shunt resistor and obtain the current through the load.
You can find more info at the following links:
Thank you so much sir.
sir is their any way to view math channel output graph on spectrum analyser.?i am asking this because my current value is very low to view on oscilloscope
It's not possible to view the math channel output in spectrum analyzer because the frequency domain analysis is performed only for signals from the two analog input channels of ADALM2000
A feature request was created on our github page: https://github.com/analogdevicesinc/scopy/issues/720
thank you so much for your fast response
sir i need to plot vi chara of components in my pcb( to find the damage of my board) .can i use any type of shunt resistor?( when i used high value of resistance since the current is minute it is not able to plot value by math function)is their any problem of loading of ckt or impedence matching problem related with resistor usage.