# LI-5405A Help Center
- [LI-5405A Help Center](https://www.licor.com/support/LI-5400/home.md): Product support landing page.
## Instruction Manual
- [Instruction Manual](https://www.licor.com/support/LI-5400/manuals.md)
- [1. Introduction](https://www.licor.com/support/LI-5400/topics/introduction.md)
- [2. Installation](https://www.licor.com/support/LI-5400/topics/installation.md)
- [3. Preparations](https://www.licor.com/support/LI-5400/topics/preperations.md)
- [4. Taking Measurements](https://www.licor.com/support/LI-5400/topics/operation.md)
- [5. Working with Data](https://www.licor.com/support/LI-5400/topics/data.md)
- [6. Software Tour](https://www.licor.com/support/LI-5400/topics/software-tour.md)
- [7. Troubleshooting](https://www.licor.com/support/LI-5400/topics/troubleshooting.md)
- [8. Maintenance](https://www.licor.com/support/LI-5400/topics/maintenance.md)
- [9. Specifications](https://www.licor.com/support/LI-5400/topics/specifications.md)
- [A. Calibrating the Cyclops-7F](https://www.licor.com/support/LI-5400/topics/cyclops-chlorophyll-sensor.md)
- [B. Calibrating the Oxygen Optode](topics/oxygen-optode.md)
## FAQs
- [FAQs](https://www.licor.com/support/LI-5400/faqs.md)