| Products > Test Equipment |
| V-I analog signature display on KEYSIGHT DSOX1102G scope |
| (1/1) |
| IconicPCB:
I am talking about setting up the scope , using the onboard sig genny, to display VI signature of components in an unpowered assembly. Usually done with a small transformer and current sampling resistor. The transformer provides a floating signal and the resistor a certain maximum current. The transformer can be replaced with a signal generator, with a floating output. At any rate galvanically isolated from the oscilloscope. PROBLEM: the onboard signal generator shares a common ground with the oscilloscope. Other than an external transformer is there a way to set up the scope to provide this ( analog signature analysis ) functionality? |
| IconicPCB:
No takers? |
| adam4521:
I'm a bit puzzled about the original method if you are trying to plot non-linear components. Is there dc flowing through the transformer? Are you separately providing a DC voltage source and the generator/transformer setup provides the dynamic injection? Does the signal generator on the oscilloscope have DC offset you can use to set a bias voltage? Would that work for you? |
| IconicPCB:
No Adam, No DC involved in this method. It is a simple plot of V-I Lissajous figure. The problem is centred on a need for a common reference point for both the current sample ( Voltage across a resitor ) and voltage across the component or node in question. https://www.google.com/search?channel=fs&client=ubuntu-sn&q=octopus+curve+tracer+schematic |
| Navigation |
| Message Index |