Otii 3 Desktop App works on a project basis, which can be saved and later opened again.
An Otii project contains all the settings of the device under test (DUT) used, plus all measured measurement recordings of the multiple channels available for current, voltage, and power data.
Otii 3 creates a lot of sample data when doing lengthy recordings.
This makes it important to choose the right storage location for your projects:
The size of the data for a one channel in one recording is:
4 bytes * sample_rate * no_of_seconds
The default sample rate of the Otii Arc is 4 ksps, and for the Otii Ace 50 ksps.
If you have an Otii Ace you can change the sample rate down to 1 ksps.
When opening the Otii 3 Desktop App, users can create a new project or choose to do so while working on an existing one.

Ctrl-N⌘-NUsers can save Otii projects in a desired folder and/or export them as a zip archive.
Projects in Otii3 can be saved with “Save” or “Save as”. When the “Save” option is selected for the first time in a new project, it will function as “Save as,” allowing the project to be saved in the desired location and with the assigned name. Later, the “Save” option will only update the project files previously saved.
Ctrl-S⌘-SShift-Ctrl-SSharing Otii projects is easy by exporting them as a zip file, which can be directly opened in the Otii 3 Desktop App, whether or not the user owns an Otii Arc Pro or Otii Ace Pro.
Ctrl-E⌘-E
Note that the selected folder cannot be the same folder as the project is in.Otii 3 Desktop App allows users to open a saved project either when opening the application or while working on a project. These projects may be located in a folder or a .zip file previously saved or exported.
When the Otii project is opened, it contains all previous settings such as battery emulator, profiler, analytics configurations, and measurement recordings. This enables users to perform new measurements within the same project.
Ctrl-O⌘-O
If you have been using the Otii Product Suite for some time, you may be familiar with Otii 2. We highly recommend that you download the latest version of the Otii 3 Desktop App to take advantage of its improved features and extended capabilities for testing.An Otii 2 project can be imported within the Otii 3 Desktop App. Just be aware that once the project is saved in Otii 3 version, it is not possible to open the saved project again in Otii 2.
Ctrl-O⌘-OExporting recordings in CSV format broadens compatibility with third-party data analysis tools when making a more precise analysis of the collected recordings. A practical alternative to generate graphs for dedicated reports or analyze data further.