Raw Data Tools - Time Adjustment Tool

The time adjustment tool can be used to shift the timestamps in the raw data files by a specified amount. You can apply the shift to a selection of raw data files or raw data types, such as position, depth, motion, tide, heading, speed, or sound velocity. Most probably, you are going to use this tool for one of the following scenarios:

• While recording data, the time or timezone of your computer was set incorrectly.
• One of the devices used built in time stamps, but the time zone used was wrong.
• After importing raw data files without setting the proper date.

When data has been shifted in time, it is impossible for the 'Sounding Wizard' to combine the data to generate soundings. This is especially true in cases where you want to apply a tide observation or post-processing kinematic correction file to a dataset which has the timestamps wrong. This is where the time adjustment tool comes to the rescue.

The Time adjustment tool is part of the "Sounding Wizard" and can be found on the raw data processing tools page. To start the position editor, click the 'Time...' button in the 'Time' section as shown below:

The time adjustment tool can be found on the data correction page of the "Sounding Wizard".

Adjusting Time

To apply a time shift, enter the values for hours, minutes, seconds, and milliseconds and select the direction (forward to add the selected amount of time to the timestamps, or backward to subtract). Use the 'Select...' buttons to choose the raw data file(s) and raw data type(s) to apply the time adjustment.

After changing the timestamp values of one or more raw data files, the changes are saved in the 'Modified' raw data folder. This does not affect your original survey data.

Fix time(zone) setting errors with the time adjustment tool.