I cannot open a LDT file. What should I do? Help!
Virtually anyone has encountered some problems with opening unknown files while working on a computer. It can be very frustrating. Yet such problems, not only with LDT files, can be addressed in a standard way. Follow the steps below and we can guarantee that your problem with opening LDT will be resolved!
LDT File Extension
- File type ZENAX Source EULUMDAT Format
- File developer ZEMAX Development Corporation
- File category Data Files
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File popularity rating
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What is a(n) LDT file?
The LDT (ZENAX Source EULUMDAT Format) is a binary file format developed by the ZENAX corporation. It is used in their lighting systems to store data related to luminaires, rooms, and surfaces. The data includes settings such as color, brightness, and stay time. To use an LDT file, a ZENAX-compatible software or hardware must be present.
LDT files are organized in sections that contain data records. This enables the user to modify an existing configuration without having to re-enter all the information from scratch. It also helps prevent errors and facilitates quick changes.
How to open LDT file?
If given user account does not have necessary permissions to open files with LDT extension, it is highly probable that no program that supports given files is installed on the users’ system. Below is a list of actions user should pursue in order to resolve most common problems.
Step 1. Download and install application that supports LDT files
After the application has been installed, the system should automatically open LDT files with given application. Below is the list of relevant programs along with operating systems they are available for:
Programs that support LDT files
Step 2. Verify whether LDT files are associated with appropriate software
It is possible that an application that supports LDT files is not associated with such files. In such case, the program should by manually associated with LDT files (right-click on the file icon → Properties → General Tab → In submenu "Open with" and click on "Change" button. System will display a list of suggested programs that support LDT files. Choose the application by checking the box "Always use the selected application to open this kind of files". System will store this information in its registry and use it to open LDT files with the selected program.
Changing LDT file association in registry
File association for LDT files can be edited manually by editing appropriate entry in Windows System Registry. However, it is discouraged as it may introduce errors to registry if not done properly and may even damage the system.
Step 3. Check LDT file for other errors
- LDT file was not copied properly from storage medium.
- Antivirus application prevents opening LDT files. In that case it is recommended to exercise extreme caution and recover or delete infected LDT file. It is also advised to scan the entire system for malicious software and viruses with antivirus software.
- For LDT files downloaded from the internet it is advised to check if the file has been downloaded completely and is not corrupted. If not, the file should be re-downloaded.
