how to fix up the values on X-axes in chart

[Vaibhav G]

Hi all,

I am using waveform chart to indicate the values of temerature from thermocouuple from E-series DAQ board. The problem what I am facing is, on the values of X axes(time). I have chosen relative time & removed the auto scale option. I fixed the higher & lower limits as 1000 & 0 respectively. But when I am executing the VI, the value doesn't come in between the limits which I have settled. It is taking values abruptly nearly 9011119 to 9112233.

Can I fix it to the values which I have settled? & also I am getting noise peacks in waveform.

Can anyone guide me?

Thanking You,  

[Giedrius.S]

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Vaibhav G wrote:

Hi all,

The problem what I am facing is, on the values of X axes(time). I have chosen relative time & removed the auto scale option. I fixed the higher & lower limits as 1000 & 0 respectively. But when I am executing the VI, the value doesn't come in between the limits which I have settled. It is taking values abruptly nearly 9011119 to 9112233.

Can anyone guide me?

Thanking You,  

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If your chart starts at some very large X Scale values, try to clear its history data. Simply wire an empty array to the chart's History Data property node. In this case, it will always start from zero time.

If you want your chart not to exceed the higher limit, you have to stop the plot before it reaches it. You can automatically set the higher limit of your X Axis to meet the lenght of the analysis by using property nodeof X Scale -> Range -> Maximum.

[Guruthilak]

i didnt see any proble when i tried the same here.

As per the noise is considered how have you connected the signal to the DAQ? Differential or RSE or NRSE?

Is the grounding is proper? what about the sampling rate?

[Vaibhav G]

I also can't find any terminal to attach array. Please guide me over that.

Yes, grounding is not proper so it can be the reason for noise peaks. The samplinng rate is 250 kS/s as it is PXI 6221...signal is connected to DAQ by RSE