LabVIEW
cursor triggering waveform
Hi nasnas,
is there any way to do this in LABVIEW (same as an oscilloscope ) applying impulsion at a certain threshold
You want to output a pulse when a certain threshold of your AI signal is crossed? Surely you can program such behaviour in LabVIEW!
i don't know if my hardware (my PCI card) has an internal trigger
Why don't you read the datasheet of your PCI card?
A cursor can be used like a control, i.e operated like a slider that can be polled. There are even events for cursor move, cursor release etc. The only thing the code gets out of it is figuring out the current/new "value" of the cursor, i.e. the x and y positions (and, for cursors locked to a plot, the index of the corresponding element of that plot.). Your code is free to use that information in any way it likes. So, yes, you write code where the user moves the position of cursors and the program acts accordingly.
Hi nasnas,
i tried to do the triggering with cursor but it doesn't work
The cursor on its own will not do any triggering: so what have you tried?
a way to apply a pulse with negative polarity to my waveform and with a threshold 290mv.
Define "pulse with negative polarity"…
How do you want to "apply" that pulse to your waveform?
And how is a "threshold of 290 mV" involved in applying a pulse to a waveform???
Hi nasnas,
it's the same operation as an oscilloscope
Which "operation" are you talking about?
display my signal in the oscilloscope and when i apply a pulse at 290MV ,i can see my signal in a stable way
Now you are talking about Megavolts?
When and how do you apply a pulse? How is that pulse related to "my signal"?
You really need to learn to describe your problem in a more clear way!
