Transition problems

[Bojer]

Hi All.

I have a problem with the transition function in Labview 8.0

When I measure something on the scope, with the reference position in horizontal timing set to 50% (so the trigger point will be in the middle of the graph) then I want to do some transition measurements on the waveform, but the transition function is always setting the first sample (t0) to "0"... this is wrong, t0 should be a negative value..

I have the same code in LV 6.1, and here it is working without any problems....... I can’t figure out what to do.... anyone have a clue???

Of course I can calculate the value myself afterwards because I know all the timing details....... but I don't like that solution

Kind regards Thomas

[smercurio_fc]

Basically you've said "My function used to work in 6.1 and now it doesn't under 8. What's wrong?". Well, try as we might we're not mind readers, and we can't see your code, so there's pretty much a zero chance of anybody being able to help you with the little information that you've given. What is this "transition function" that you're talking about?

[Bojer]

Sorry if my question wasn't clear...

The transition function is the one Transition Measurements (Not in Base Package), I have attached an VI based on a converet NI SCOPE express.

If you put a 1Khz square or something like that on the scope then you will see on the grafh that the signal zero time is at the middle on the waveform.. but on the transition measurements then the start time is positiv.. that is wrong it should be negativ..

Hope this helps.

[smercurio_fc]

I don't have NI-Scope so I just created a waveform and fed it to the Transition Measurements VI and I think I see what you're saying. It seems that in LV8 the "start time" has been made relative to t0 as opposed to an absolute value, which is what you were seeing in 6.1. I tried the same thing in LV7.1 and the behavior of the function is as it was in 6.1. I did not see any mention of this in the Release Notes.

Message Edited by smercurio_fc on 03-03-2006 02:37 PM