> For the complete documentation index, see [llms.txt](https://docs.irs.systems/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.irs.systems/ltt/documentation/ltt-gui-manual/lttgui/mainwindow/groupdisplay.md).

# Group Display

## Group display

The test groups display is located at the bottom part of the main window.

{% hint style="info" %}
A **test group** is a logical container which groups one or more DUT's together with one or more power supplies and temperature sensors.
{% endhint %}

* How to configure test groups?
* [How to assign DUT's (test stations) to a test group?](/ltt/documentation/ltt-gui-manual/lttgui/dialogs/f11testconfiguration.md)

You need to create at least one test group. More than one test group are usually only needed when you want to run different sets of DUT's with different supply voltages in parallel.

The test group display shows various test group related information:

![Test Group](/files/Wq17sGUvishymZNg1NvG)

1. group name
2. assigned test stations
3. current TCC value ([more info](/ltt/documentation/ltt-gui-manual/lttgui/hwcontrol/tcc-control-gui.md))
4. current temperature ([more info](/ltt/documentation/ltt-gui-manual/lttgui/hwcontrol/ts-control-gui.md))
5. current supply voltage ([more info](/ltt/documentation/ltt-gui-manual/lttgui/hwcontrol/ps-control-gui.md))
6. currently mapped operation mode ([more info](/ltt/documentation/ltt-gui-manual/lttgui/dialogs/f10testparameterconfiguration/operationmodemappings.md))

{% hint style="info" %}
The displayed **TCC input indicators** for each group are determined by the TCC mask which is defined in the [project wizard](/ltt/documentation/ltt-gui-manual/lttgui/dialogs/f3projectwizard/testgroupsconfiguration.md). If you move your mouse cursor over such an indicator, a tooltip appears, showing the TCC indicator index. The index goes from 1 to 8 (left to right).
{% endhint %}

## Group display

The test groups display is located at the bottom part of the main window.

{% hint style="info" %}
A **test group** is a logical container which groups one or more DUT's together with one or more power supplies and temperature sensors.
{% endhint %}

* How to configure test groups?
* [How to assign DUT's (test stations) to a test group?](/ltt/documentation/ltt-gui-manual/lttgui/dialogs/f11testconfiguration.md)

You need to create at least one test group. More than one test group are usually only needed when you want to run different sets of DUT's with different supply voltages in parallel.

The test group display shows various test group related information:

![Test Group](/files/Wq17sGUvishymZNg1NvG)

1. group name
2. assigned test stations
3. current TCC value ([more info](/ltt/documentation/ltt-gui-manual/lttgui/hwcontrol/tcc-control-gui.md))
4. current temperature ([more info](/ltt/documentation/ltt-gui-manual/lttgui/hwcontrol/ts-control-gui.md))
5. current supply voltage ([more info](/ltt/documentation/ltt-gui-manual/lttgui/hwcontrol/ps-control-gui.md))
6. currently mapped operation mode ([more info](/ltt/documentation/ltt-gui-manual/lttgui/dialogs/f10testparameterconfiguration/operationmodemappings.md))

{% hint style="info" %}
The displayed **TCC input indicators** for each group are determined by the TCC mask which is defined in the [project wizard](/ltt/documentation/ltt-gui-manual/lttgui/dialogs/f3projectwizard/testgroupsconfiguration.md). If you move your mouse cursor over such an indicator, a tooltip appears, showing the TCC indicator index. The index goes from 1 to 8 (left to right).
{% endhint %}


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