Dr Duncan James > Tcal > Sample Dataset

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Tcal Calibration

Calibration/Validation of Data/Transient Loggers, Recorders and Acquisition Systems

This is a Tcal calibration article. Follow this link to return to the Tcal homepage.

Sample Dataset

An example set of data for practising using the Tcal analysis spreadsheets.

A data set for an example instrument is available to practise using the Tcal software. You might use this for staff training, for testing out the software before deciding whether to use it or perhaps if you are still relatively new to Tcal this can help you understand better how the software works in case of needing to interpret results that look unusual.

It is recommended you download the sample dataset, unzip the files and then look at the readme file to find out about the data. It is from an instrument with +/-10V, +/-1V, +/-0.1V and +/-0.01V ranges and 8 channels. DC voltage response and timebase data are included so you can create a full calibration certificate. You can look at/download what the calibration certificate should look like to check your results.

Sample data set (zip file). (Save using your standard save method on your browser which might be to right-click and select save-as.)

If you have not already done so you will need to go to the software section to download the spreadsheets for processing this data. Instructions are included in the spreadsheets with additional advice on the software page.

Results

Here are the results so you can check your working.

You can look at/download the calibration certificate to check your results. Copies of the Tcal spreadsheets with the data pre-loaded are also included in case this helps but it is recommended that you first try to debug any errors yourself before looking at the "answers" in the spreadsheets.

Results for sample data set (pdf calibration certificate). (Save using your standard save method on your browser which might be to right-click and select save-as.)

Tcal spreadsheets populated with sample data set (zip file). (Save using your standard save method on your browser which might be to right-click and select save-as.)

The spreadsheets used for analysing the sample data are Tcal version 1.27 with a couple of minor text differences in some of the operator instructions and some of the cells with numbers relating to the granularity error are one positioned one row higher than in the published version. If you are using a later version the Linearity, DC Offset, Inaccuracy, RMS Noise and timebase calculations are all backwards-compatible so you can still compare your answers. From Tcal 1.28 onwards there are updated example error values so they will be different.

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