oscillscope project

[Ray.R]

OK.

I will check the binary file.

What I meant was how many channels you selected (looks like 2), and was Force or EMG selected for each one.  I will look at the binary file.

R

[Ray.R]

Good morning kmous,

I ran the VI with the data you provided and repeated the sample within the while loop.

I had it on Highlight execution to see if it went into the correct case, which it did (based on the EMG or Force selection).

Below is the resulting waveform.  I Edited the message to include the 2nd one, which has the line... I cancelled the load data to stop the VI, thus resulting in the +5 signal.

R

    

Message Edited by JoeLabView on 07-28-2008 08:29 AM

[kmous]

where the line coming from ? I did not get that when i ran it on friday!!!!
what do u want me to run ? I have only 2 channels connected to my device right now ...connot get more here at the office.
so i will attach a graph of channel 0 : EMG
                                         channel 1 : Force
there u go :


Message Edited by kmous on 07-28-2008 08:40 AM

Message Edited by kmous on 07-28-2008 08:40 AM

[kmous]

and this is when i select only one channel : channel 0 as force.
I can cleary see that when i select Force it goes into EMG and vice versa

[Ray.R]

I was getting this waveform as well..  the negative one..

Go through the array of channels and make sure that you only have two selected as active.  Run it again.  You should get the same one as what I posted this morning.

By the way, try posting the image as a png and not a gif.  It will be much smaller.

I would not worry about the line (for now).  I will look into it tonight.

R

[Ray.R]

We replied at the same time..  Are you saying the selections are reversed for Force & EMG?

If so, you can swap the cases... Right click on the TRUE Case Statement and select "Make this case FALSE".

At least we got similar waveforms 😉

R

[kmous]

I did swap the cases 🙂 here what i got : (btw i am not using a real emg signal , i am using same generator now to acquire all kinds of signals )
2 EMG : 2emg.png  seems fine
2 force : 2force.png , seems not fine 😞 there is a green line there and it is negative ...!!! )
what do u think ?

[Ray.R]

Yes... We are getting the same thing..

Okay..  I needed to know if that was normal or not.

For some reason, it does not like negating the values..  I will look at it tonight. (no LV on this PC).

What should the Force waveform look like?

R

[kmous]

Hey Ray ,
I removed the negate , and i just wired a line instead (this should be acquiring a normal Oscilloscope sigtnal ) i got same thing as 2force.png but positive value (u can say a symetrique one:) ) so still a green points , i dunno where they are coming from!!
BTW how can i set the status to off to all my channels by default ?

[kmous]

and btw I tried to meaasure (Not active channels) here what i got !!!
This is really weird !! i am getting signals for channels not even connected to devices!! why ?