Simultaneous meas. is needed, is the PCI-6115 enough to meas. a 500nsec. signal?

[monrich]

Simultaneous measurement is needed on 4 different test points. Is the PCI-6115 enough to measure the signals shown in the attached document? Or a High-speed digitizer (Oscilloscope) more appropriate?

Thank you in anticipation.

[Henrik_Volkers]

Do you like to open a .doc found in the internet???

Post a png, and I'm willing to take a look 🙂

[monrich]

Right. Attached are the PNG's. There are 4 waveforms to be measured: Rise time, Delay driver response, Duty cycle / Frequency, Pull-in and holding current. The pull-in and holding current, will be sensed with a current probe. My question is whether the PCI-6115 is enough to measure these signals? If not, is an oscilloscope / digitizer a more appropriate choice considering there are 4 different signals that need to be measured simultaneously? I would highly appreciate the help, Henrik. :) Good day!

[monrich]

Here's the 4th waveform, pull-in and holding current.

[Henrik_Volkers]

 About 5MHz bandwidth seems to be just enough to measure a 100ns step with 10% error.

My source for this answer is the Appendix A in Appnote 122 from linear.com where Jim Williams point out HOW MUCH BANDWIDTH IS ENOUGH?

But you should think about correct cable termination, a short look into the spec told me that you might better use a 50Ohm termination which is not provided by the 6115 ...

And remember 1m cable is about 5ns delay ....

[Henrik_Volkers]

Update:  timeout for edit my post 😉

500ns rise time need about 700kHz bandwidth

The 6115 has about 4MHz Bandwidth , so you will get an error in the range of 1.5% to 2%  .....