Operating Instructions
Table of Contents
The Basics
| 1 | Introduction to the LI-6800 |
What it is, what it does, and how it does it
| 3 | Preparations and verification |
Learning how to make it work
| 4 | Operation |
Data files, results, and configuration information
Managing logged data on the console
System Tests, Troubleshooting, and Maintenance
| 5 | System tests and messages |
Trying to get your attention
| 6 | Troubleshooting |
When things go wrong
The log button on the head does not work
CO2 cartridge exhausts quickly
Issues with environmental controls and setpoints
Cannot control the fluorometer output
Fluorometer does not flash on log
Chamber and light source warning messages
| 7 | Maintenance and calibration |
The difference between data and good data
The Fluorescence System
| 8 | Measuring chlorophyll a fluorescence |
Fluorometer theory and equation summary
Installing the fluorometer chamber
| 8.1 | Fluorescence measurement examples |
Determine Fv/Fm and quenching coefficients
An induction kinetics measurement
Additional fluorescence measurements
| 8.2 | Optimizing flash settings |
| 8.3 | The FlashAnalysis application |
Using the FlashAnalysis application
| 8.4 | Custom events |
Custom event parameter reference
Fluorometer events file structure
| 8.5 | Maintaining the fluorometer |
Leaf Chambers, Light Sources, and Accessories
| 9.2 | Matching the IRGAs |
Match information in data files
Range match information storage
| 9.5 | More options |
Installing the large leaf chamber
Using two light sources simultaneously
| 9.6 | Maintaining chambers and light sources |
The Aquatic Chamber
| 10 | Measuring assimilation from aquatic samples |
Aquatic chamber software controls
| 10.1 | Preparing for measurements |
Measuring the response time of blank media
Light transfer and reported light intensities
| 10.2 | Measurement examples |
Measuring PI response using a program
Measuring PI response with a Background Program
| 10.3 | More options |
Controlling temperature with a water bath
Using auxiliary channels with the aquatic chamber
Measuring the subsample loop flow rate
| 10.4 | Troubleshooting the aquatic chamber |
| 10.5 | Maintaining the aquatic chamber |
The Soil Chamber
| 11 | Measuring soil CO2 flux |
Connecting external soil sensors
Soil chamber software controls
| 11.1 | Preparing for measurements |
| 11.2 | Troubleshooting the soil chamber |
| 11.3 | Maintaining the soil chamber |
An Introduction to Programming the LI-6800
| 12 | Using Background Programs |
| 12.1 | Overview of Background Programs |
Creating custom interface dialogs
| 12.2 | Example Background Programs |
Record and replay a time series
| 12.3 | Response curve Background Programs |
| 12.4 | Background Program screen reference |
| 12.5 | Step reference |
| 12.6 | The list_utility module |
| 12.7 | Controlling custom events from a BP |
Instruction Manuals
NEW! Using the LI-6800 Portable Photosynthesis System v2.1
(6800_v2.1-Manual_19739.pdf)
Instruction manual for the LI-6800 Portable Photosynthesis System running software version 2.1. This edition includes full theory and operating information for all LI-6800 chambers and applications, including leaf chamber, the fluorometer, the soil chamber, the aquatic chamber, and accessories. It provides an introduction to programming the LI-6800 as well.
NEW! What's new in version 2.1
For people who are familiar with prior versions of the software and manual, this document summarizes the new features and how to use them.
(6800_QuickStart_15836.pdf)
Quick start guide for the LI-6800 Portable Photosynthesis System.
Using the LI-6800 Portable Photosynthesis System v1.5
(6800_Manual_15834.pdf)
Instruction manual for the LI-6800 Portable Photosynthesis System running software version 1.5.