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sajidsaleem

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Posts posted by sajidsaleem

  1. Dear All

    In my mueasurement file i have two columns. First column has the value of the variable and second column has the number of times that value occurs in measurement. e.g

    Value-----# of times

    2--------------3

    4--------------1

    3--------------2

    Values in both clumns are not sorted and re arbitrary.

    Based on this example i want to generate a 1 D array which has the value in Column 1 repeated number of times in the second column. The above example will then become a 1 d array as follows.

    2

    2

    2

    4

    3

    3

    At average there are 5000 measurements in one file.

    Can you please help.

    Thanks

  2. Dear Members

    I am a novice to Labview. I am trying to run this file from Keithley to control my 2400SMU.

    http://www.keithley.com/data?asset=10313

    I ahve the relevant VXI PNP driver installed from

    http://www.keithley.com/data?asset=7145

    However when i run the file, i get the follwoing error.

    Ke24xx Initialize.vi<ERR>Driver Status: (Hex 0xBFFF0015) Timeout expired before operation completed.

    Can any one please help me out with this problem.

    Regards

  3. Dear Group members

    My basic problem which i want to solve is................Source a Current ramp and monitor voltage in real time(not at the end of the ramp or cycle), i want to compare the measured voltage against two threshhold voltages(set as constants) and control the direction of ramp(up or down).

    I have a new file (attached with this post) which i downloaded from Keithley website. I modified it to work with my 2400. It works fine and sources the ramp and measures the voltage.

    PROBLEM is that i get the measured data at the end of the cycle(all 100 or whatever number of points i set) so i cant compare the measured value against my thresholds in real time.

    How can i get the measured voltage after every increase/decrease in the source current ramp so that i can then compare the measured voltage and decide when to change the direction of current ramp.

    Regards

    Ess ESS

    Download File:post-6071-1159462530.llb

  4. Download File:post-6071-1159442948.viDownload File:post-6071-1159442948.viDear Members

    I am trying to build a VI for use with the Keithley 2400 Source Meter. My Intention is to Use a Linear CURRENT SWEEP and measure the voltage at each incremental level. Based on the vlaue of read voltage i want to control the direction of ramp i.e up or down.

    The attached VI does everything correctly in frame 1 but when in frame 2 READ? is executed(i think 2nd time and thereafter)i get an indication on the Instruemnt

    Error Code -410 Query Interupted

    The graph does not show any values measured.

    Can you please help to resolve the issue.

    Regards

    Sajid SALEEM

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