Re: how to save data on a graph and then add new data to it
hey thank alot man, im gonna try to do it with the charts instead.it doesnt matter if its graphs or charts i just want to be able to save the data and add a new plot to it
how to save data on a graph and then add new data to it
i am currently plotting data on a graph from a physical system. However when i want to add new data to the plot, the old one is replaced. I am trying to do more than one plot on the same graph, where the incoming data is at different times. I want something like Excel where i can just add a new plot to the graph.Can i save the data or freeze it onto the graph or something so that i can add a new plot and see the two at the same time?
Re: setting up differential and single ended connections, multichannel scanning also
i understand what your telling me. thanks alot marcus. All the signals sources that i am inputting to the board are grounded. There is no floating signals.I know how to set up the differential channel.What i want to know is for the single ended input, do i still need to connect AISENSE to GND. If i do this externally, doesnt this mean that the negative differential input would become shorted?
setting up differential and single ended connections, multichannel scanning also
i am currently using the PCI6014 i have set up the 8 input digital channel, three differential channels and one NRSE channel. I would like to know how to scan from the three differential channels as well as set them up. Also since i am using a NRSE does it mean that i connect AISENSE to AIGND? Channel 0 is used as the NRSE channel and 19,210,311 is used as the differential input.
i am searching for the image update VIs to download
i would like to refresh my VI that i put up on the web without having to refresh the entire page.From your results i was told to use the image update VIs located somewhere on your website.i have been searching for this for sometime and i cant seem to find it.can you please help me locate it or provide some alternative VI that would perform the same function please. I am running version 5.1 in labview, thanks
Is the output from an auto power spectrum complex valued?
i want to display the fourier output of some ascii data that i saved to a text file. however the input to the FFT block must be complex valued.how am i to know what i see is actually the fourier analysis?please help
Re: maximum input frequency of the PCI-6014?
Ron that was extemely useful information, however for this application i am using digital inputs and reconstructing the waveform in labview. i guess this would make the problem i am having more clear. can i vary the sampling rate for digital inputs in measurements and explorer?
how can i determine the sampling rate of my board
I am currently using the PCI-6014. I would like to know how fast this board is capable of sampling.can this value be increased or decreased from labview? i am using immediate Digital inputs and my analog signal look fine at low frequncies ( like 1-10 Hz). However when my input siganl increases to 100 Hz and even higher, it appears to be extremely corrupted. I tried adjusting the delay in teh loop but this not help.i am not sure what next to do in order to properly visulaize these high frequency signals.can i include some time base like an oscilloscope in order to see it better?
Re: How to change the properties of waveform graph from time domain
i have a similiar problem.So what you are saying is that by just changing the scale to decimal after the FFT is taken means that the unit is in frequency?
Re: How plotting on a digital waveform graph the bit transition in function of the time
My name is vijay. For the scaling on the x axis,can u please tell me what X0 and delta X denotes. What scaling factor are they reffering too? thank in advance. Also in order for you to see the binary representation of your digital inputs u can open up the read from one digital port VI located under data acq, digital i/o, immediate digital i/o. Then u can wire a graph at the output from the pattern node before number is converted to boolean. Hope that helps jonathan!
scaling graph to frequency?
i have succesfully read in data from a digital input and managed to store in a text file. This data appears to be most likely an ASCII format. Are there ASCII to number converters? I would also like to now use this data and perform analysis on them.For example using the FFT etc. I have managed to read the data from the same file and perform analysis on it.However the FFT must represents a signal in the frequency domain and the scale remains in time. Im not sure how to scale my X axis to represent this? Can you please help!
How can i display the signal out of a FFT block to a graph?
What conversion is required in order to convert a the output of a FFT block to a waveform display? The signal input to the FFT block is a binary pattern signal!
