Graph axis configuration during acquisition

Question

   Hi all,
I have a simple question, that is not-so-easy to solve apparently. In two words, here is what I want to do :
1) I have a laser providing a voltage (analogic signal), acquisition with a DAQmx card.
2) I developed a simple application that acquires the signal, writes it into a LVM file. This works fine.
3) I added a sliding graph to visualize DURING 30s the evolution of the time over time (the voltage measuring tremor).
The problem is: I cannot configure my sliding graph in order that it begins on the left of the graph, and finishes ont the right of the graph. Simple, isn't it? But in fact, as long as the X-axis is composed of some strange stuff that is always dependant of the time of the system (hour, seconds and so on), so sometimes my signal appears at the beginning of the acquisiton somewhere between the two extremes of the graph. What I would like simply is: min value of x = 0, max value of x = 30s, and visualize continuously my signal over time from the left to the right of the graph. I tried to configure the mi/max value in the graph options, but this did not work.
I'm pretty sure that there is a simple way to do this, but I do not know it !
If anyone can help me, I'd appreciate it !! ;-)
Julien

Answer 1

Thank you
again for your answer. However, this is not completely clear for me. So what I
did to simplify things:
1)     
I still use a DAQ assistant to acquire data under dynamical data format, 10 samples to read, 100 Hz.
2)     
I use now a classical graph, in which I have the option to ignore time
stamp (this option was not in the sliding graph, except in the Properties
panel, and was not kept in memory from one trial to another).
3)     
As I have chosed the option “ignore time stamp” onmy classical graph, I
have my x-scale OK from 0 to 30s. My Y-scale is OK also.
4)     
The acquisition works fine.
BUT : I see
the signal evolution only from x=0 to x=0.1 (I think that this is related to 10 samples to read/100 Hz),
repeating again and again, and only in this range. How can I do in order to
obtain a CONTINUOUS evolution from 0 to 30 and not only in this very small
range?
Thank you
again VERY much for your help, which is HIGHLY appreciated.
Julien