System Overview
A life time tester (LTT) is an electric control cabinet, whose purpose is to perform long term electrical tests on various electrical devices (so called devices under test, or short DUT) under certain environmental conditions (temperature, humidity, etc.). One can say, it simulates the aging process or lifetime of an electrical device.
The IRS LTT software, which comes with every IRS life time tester is composed of several parts.
This is the documentation of the IRS LTT software, including the graphical user interface (GUI), the TestStand sub system and all other related components.
Folder structure
After installation you will find a certain folder structure below your root installation folder.
| Folder | Content |
|---|---|
| 10_LTT_Results | Location of the history files (more info). |
| 20_LTT_Data_Logs | Location of various measurement data files. |
| 30_LTT_Comm_Logs | Location of various DUT communication logs (currently not used). |
| 40_LTT_Sys_Logs | System log files. |
| 50_LTT_SW | The LTT GUI software + TestStand root + Configuration files. |
| 55_LTT_MDBS | The measurement database system (more info). |
| 60_LTT_Action_Logs | See chapter about Action Logs. |
| 66_LTT_Tools | Some tools. |
| 77_LTT_Documentation | The LTT documentation. |
The 50_LTT_SW folder content is like below:
Initial Setup Guide
If you start a brand new LTT GUI installation for the first time you need to perform certain setup tasks before you can load and run a LTT TestStand sequence file.
Although the GUI assists you with this task by displaying various messages, an overview of the minimum steps needed to run a LTT TestStand sequence file is given right here.
Each of the below steps links to the corresponding chapter in which the required action will be explained in detail. In each of those chapters a back link to this setup guide is provided, so you can easily jump between the setup guide and the individual topics.
For the first 3 steps the LTT GUI may not be open. Please close the GUI if you have it currently open.
| Step | Action | Location |
|---|---|---|
| 1 | Set project name | Main configuration file |
| 2 | Setup drivers | Module configuration file |
| 3 | Setup DUT signals | MesSy configuration file |
| 4 | Create test stations | F3 - project wizard |
| 5 | Define DUT types | F3 - project wizard |
| 6 | Define test groups | F3 - project wizard |
| 7 | Define / import signals | F3 - project wizard |
| 8 | Define limits | F5 - limit configuration |
| 9 | Define operation modes and parameters | TestStand sequence file |
| 10 | Load a TestStand sequence file | Main window |
| 11 | Create a TCC <> operation mode mapping | F10 - test parameter configuration |
| 12 | Assign DUTs to test stations | F11 - test configuration |
| 13 | Start test | Main window |