Viewing data from multiple logger offloads

Information about the Tinytag overlay feature and synchronising data.

Using overlays

When using data loggers at the same time, or single units on repeated occasions, it is often desirable to view all the data recorded on the same graph.

To combine traces, open the files required and go to View and create new overlay. Tinytag Explorer will list the traces available and you can then copy or move them into a new graph (copying files makes a duplicate of the source traces in a new graph whilst leaving the original traces open, moving the traces will create a new graph and close the existing traces).

Apart from making the comparison of data easier, overlays are a useful way of keeping associated data together (all of the information associated with each individual trace is retained and can be separated out of a data set at a later date if required). Overlays allow a complete set of data to be exported in one go, rather than having to export traces individually and then combine them.

Synchronising data

Tinytag Explorer can display data in relative time, and data traces can be moved relative to each other, synchronising them so that significant events (the start of a cooling curve, or the start of a test cycle, for example) can be compared.

Once in an overlay, you can continue synchronising data as follows: go to View, Time Display Format and select Relative Time. The traces will now be displayed relative to one another, with the x-axis labelled with the time since the loggers were started. To move traces relative to each other, you can enter offsets by going to the Align menu and selecting Edit Offsets.

If a particular value is of interest, you can enter this value by going to Align and Set Sync Points and you can then synchronise your data by selecting Align, Sync at Setpoint and selecting the appropriate value from the options provided (Tinytag Explorer will then synchronise the data at the first transit of the Setpoint in each recorded data set)

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