The information fo the currently selected folder is displayed int the folder detail view at the top of the main window.
Setting Image
You can assign an image to a folder by drag and dropping an image file into the image area or by clicking
the Add Image button.
Measurement object type
Select an object type from the Object Type selection box.
Currently, only "Bearing" can be selected, and this information is used only for the calculation of the feature "EDP".
If you select "Bearing", you must also select the bearing type from the registered bearing data.
For more information on registering bearing data, please refer to Managing Bearing Data.
Threshold setting
The number in parentheses indicates the number of threshold settings applied to this folder.
To apply or remove the thresholds to this folder, press the "Setting" button to open the "Apply Threshold" window.
See Threshold for more details.
Memo
Enter text to add remarks to the folder. The content will be saved automatically.
Preferences
The Preferences window allows you to set the global application preferences.
To open the preferences window, select "Preferences" from the Setting button.
Operation Settings Tab
Optimize for touch screen: When checked, the screen display will be optimized for touch screen.
Chart Operations: Select the operation method for scaling and panning.
Chart Color Tab
In the Signal View and Trend View, the colors from 1 to 8 set here will be used as the colors of the series in order.
Managing physical quantities
A physical quantity in Sigma is a concept consisting of a "name" and a "unit",
and each record is always associated with one of the physical quantities.
You can add, delete, or edit physical quantities in the Physical Quantity Management window.
To open the window, select "Physical Quantity Manager" from the Setting button.
Double-click an item in the Physical Quantity list, or click the Add button
or the Edit button to open the Physical Quantity Edit window.
Show/Hide check box for selection
Sets whether or not to display the physical quantity as a choice when loading data or editing record information.
Superscript button
Press the button while selecting the character you want to use as a superscript in the string entered as the unit. (Only numbers are supported.)
Managing bearing data
Register the bearing model and specifications, which are required when selecting a bearing as the target type in the folder.
Currently, this is required only when calculating EDP.
Select "Bearing Manager" from the Setting button on the toolbar to open the Bearing Management window.
The basic rotation frequency can be any value,
but for the other items, enter the value when the basic frequency is the shaft rotation frequency.
For example, if you enter 1000 for the basic frequency,
enter the "Ball Pass Frequency of Outer Ring" when the shaft rotation frequency is 1000 rpm.
When the characteristic frequency information of the bearing is used, such as when calculating the EDP,
it is automatically converted to the characteristic frequency at the rotation speed specified in the record property "RPM".
Managing database
This function is used to back up, move to a new location, and load all the data stored in Sigma, including raw waveform data.
All data is stored in a folder named "SigmaData". We call it "Data Folder".
To open the data folder settings window, select Advanced Settings -> Data Folder Settings
from the Setting button on the toolbar.
Backup the current data folder
Copy the data folder into the selected folder.
Move the current data folder to another location
Moves the currently loaded data folder to the specified location.
Load an existing data folder
Loads a data folder that has been backed up.
This is a change in the reference of the data folder, and the data folder referenced before will not be deleted.
Proxy Settings
Sigma uses internet connection for license activation/deactivation and software update.
Normally, no special settings are required for the internet connection,
but if communication from the corporate network fails,
it is possible that the automatic acquisition of the proxy server settings used as a firewall has failed.
In this case, directly entering the address and port number of the proxy server being used as a firewall may solve the problem.
To change the proxy settings, select Advanced Settings -> Proxy Settings from the Setting button on the toolbar.
Cache Settings
When calculating features, AI models, etc., the calculation results are cached internally and may be reused.
Normally, you do not need to change this setting, but you can clear the cache and change the cache size in the cache management window.
To open the cache management window, select "Advanced Settings" -> "Computation Cache" from the Setting button on the toolbar.
Changing memory size
If you are experiencing symptoms such as signals, FFTs, or spectrograms not being displayed while using Sigma,
it is likely that the memory is insufficient. In this case, increasing the size of the memory used by Sigma may solve the problem.
The procedure to change the memory size used by Sigma is as follows.
Close Sigma if it is running.
Open the configuration file "C:\IIU Sigma\app\Sigma.cfg" with Notepad or other text editor.
In the configuration file, change the -Xms and -Xmx values in [JVMOptions] to the values of the memory capacity you want to allocate.
For 512MB - Xmx512m, for 1000MB - Xmx1000m, etc.
Enter the same value for -Xms and -Xmx.
Save and close the configuration file.
Launch Sigma.
If Sigma does not start here, it means that your PC was not able to allocate the specified amount of memory.
Please open the configuration file again, reduce the amount allocated and try to start.
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or the Edit button 
to open the Physical Quantity Edit window.
