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What options do the DSO3000-series oscilloscopes offer for saving data?

You can save either of the following to the scope's internal memory:

  • Setups: Setup files allow you to save the scope's configuration. Setup files include measurements, cursors, and math functions, as well as horizontal, vertical, and trigger settings.
  • Waveforms: Waveform files allow you to save all of the acquired waveform data. You can view, scale, and measure saved waveforms just as you would a newly-acquired waveform. The scope also stores some setup information along with the waveform data. When you recall a saved waveform, the scope also loads the horizontal, vertical, and trigger settings associated with the waveform.

To save or recall a setup or waveform, press the Save/Recall button and then select either Waveforms or Setups with the Storage softkey. Select the setup or waveform memory location (No.1-No.10) with the Setup softkey. Then press the Load or Save softkey.

You can save any of the following to your computer using the N2860A Scope Connect software:

Waveform data: To acquire waveform data, go to the Data window and click Refresh. To save the data to a file, click Export. The available file formats are:

  • Microsoft Excel Files (*.xls): This is actually a tab-delimited text file that can be opened with any text editor.
  • Binary Files (*.bin): This file consists of an ASCII header followed by the raw waveform data in binary format. After the ASCII header, each byte represents a data point. The byte values range from 00 to FF.
  • Hex Files (*.hex): This file consists of an ASCII header followed by the raw waveform data in an ASCII hex representation. Each data point is preceded by 0x, which indicates that the format is hex. The ASCII values range from 0x00 to 0xFF.
  • Decimal Files (*.dec): This file consists of an ASCII header followed by the raw waveform data in an ASCII decimal representation. The ASCII values range from 0 to 255.

    For binary, hex, and decimal formats, you will need to convert the raw waveform data to actual voltage values. You will also need to create an array of time points that correspond to the voltage points.

    The formula to convert each raw waveform data point to a voltage value is:

    Voltage = (data[0] - data[x]) * Yincrement + Yorigin

    data[0] is the first raw waveform point
    data[x] is the point being calculated
    Yincrement is the voltage delta between adjacent A/D levels
    Yorigin is the lowest A/D level

    Note: In version 1.1.18 of the Scope Connect software, the ASCII headers do not include the Yincrement or Yorigin values. For this reason, we recommend that you always use .xls format if you want the waveform data in units of seconds and volts.

For all of the above formats, an ASCII header precedes the data. This header contains the volts/division setting, time/division setting, number of points, and a date stamp.

Screen shots: To acquire a screen shot, go to the Waveform window and click Refresh. To save the screen shot to a file, click Export. You can then save the image in .bmp format.

Measurements: To acquire a list of eighteen common automatic measurements, go to the Measurement window and click Refresh. To save the data to a file, click Export. The available file formats are:

  • Microsoft Excel Files (*.xls): This is actually a tab-delimited text file that can be opened with any text editor.
  • Text Files (*.txt): The file format is identical to that of the .xls file.

For both of the above formats, an ASCII header precedes the data. This header contains the volts/division setting, time/division setting, and a time stamp.