Operating Manual LSM 710 and ConfoCor 3

Operating Manual LSM 710 and ConfoCor 3
Contents ................................................................................................................................. 1
Introduction............................................................................................................................ 1
Starting the System ............................................................................................................... 2
Introduction to ZEN – Efficient Navigation .......................................................................... 5
Setting up the microscope................................................................................................... 10
Configuring the beam path and lasers ............................................................................... 12
Scanning an image............................................................................................................... 17
Storing and exporting image data ..................................................................................... 22
Using the ConfoCor 3 module............................................................................................. 23
Switching off the system..................................................................................................... 29
This LSM 710 / LSM 710 NLO and ConfoCor 3 Quick Guide describes the basic operation of the
LSM 710 / LSM 710 NLO and ConfoCor 3 Laser Scanning microscopes with the ZEN 2009 software.
The purpose of this document is to guide the user to get started with the system as quick as possible in
order to obtain some first images from his samples.
This Quick Guide does NOT replace the detailed information available in the full user manual or in the
manual of the respective microscopes (Axio Imager, Axio Observer, Axio Examiner).
Also, this Quick Guide is written for a user who is familiar with the basics of Laser Scanning Microscopy.
For your safety!
Observe the following instructions:
− The LSM 710 / LSM 710 NLO and ConfoCor 3 Laser Scanning Microscope, including
its original accessories and compatible accessories from other manufacturers, may
only be used for the purposes and microscopy techniques described in this manual
(intended use).
− In the Operating Manual, read the chapter Safety Instructions carefully before
starting operation.
− Follow the safety instructions described in the operating manual of the microscope
and X-Cite 120 lamp / HBO 100 mercury lamp.
Starting the System
Switching on the LSM system
• Switch on the main switch (Fig. 1/1) and the
safety lock (Fig. 1/2).
• When set to ON the power remote switch
labeled System/PC provides power to the
computer. This allows use of the computer and
ZEN software offline
• To completely switch on the system, now press
the Components switch to ON. This starts the
other components and the complete system is
ready to be initialized by the ZEN software.
Switching on the X-Cite 120 or the HBO
100 mercury lamp
Fig. 1
Power remote switch
• Switch on the main switch of the X-Cite 120 /
HBO 100 lamp for reflected light illumination
via the power supply as described in the
respective operating manual.
Switching on the Ar-ML Laser
• If the Ar-ML laser is required, switch it on via
the toggle switch (Fig. 2/2) on the power supply
and turn the key (Fig. 2/1).
The laser is automatically kept in standby mode
for 5 minutes to warm up.
• Set the idle-run-switch (Fig. 2/3) to run. It takes
about 50s until the laser has reached the set
output power (green LED) provided the warm
up time of 5 minutes is already completed.
Fig. 2
• Adjust the required power level with the control
knob (Fig. 2/4) (default position should be
11 o’clock).
Power supply of Ar-ML laser
Starting the ZEN software
• Double click the ZEN 2009 icon on the WINDOWS desktop to start the Carl Zeiss LSM
The ZEN Main Application window and the LSM 710 Startup window appear on the
screen (Fig. 3)
Fig. 3
ZEN Main Application window at Startup (a) and the LSM 710 Startup window (b
and c)
In the small startup window, choose either to start the system (Start System hardware for acquiring new
images) or in Image Processing mode to edit already existing images. Toggle the little
view the Boot Status display and get the additional Offline / Demo button option:
symbol to
− Choosing Start System initializes the whole microscope system and activates the entire software
package for new image acquisition and analysis.
− The Image Processing mode ignores all hardware and activates only data handling and image
processing functionality for already acquired images.
− The Offline / Demo mode reads the current hardware database but does not activate the system
hardware for use. Instead, it simulates the system hardware for training purposes.
Upon clicking the Start System button, the Image Processing button changes to a Cancel
button. Click Cancel to interrupt/stop the Startup of the system.
After Startup, the ZEN Main Application Window (Fig. 4 and Fig. 5) opens. To benefit from all of ZEN's
features, run the window in its full screen mode.
Fig. 4
ZEN Main Application Window after Startup with empty image container
Fig. 5
ZEN Main Application Window after Startup with several images loaded
Introduction to ZEN – Efficient Navigation
The ZEN 2009 interface is clearly structured and follows the typical workflow of the experiments
performed with confocal microscopy systems:
On the Left Tool Area (Fig. 4/D) the user finds the tools for sample observation, image acquisition,
image processing and system maintenance, easily accessible via four Main Tabs (Fig. 5/1). All functions
needed to control the microscope can be found on the Ocular Tab, to acquire images use the
Acquisition Tools (Fig. 5/3 and 4). Arranged from top to bottom they follow the logic of the
experimental workflow. The area for viewing and interacting with images is centered in the middle of the
Main Application Window: the Center Screen Area. Each displayed image can be displayed and/or
analyzed with many view options available through view tabs which can be found on the left side of the
image. According to the chosen view tab, the required view controls appear in View Control Tabs below
each image. File management and data handling tools are found in the Right Tool Area (see Fig. 4 and
Fig. 5).
Color and brightness of the interface have been carefully adjusted to the typical light conditions of the
imaging laboratory, guaranteeing optimal display contrast and minimal stray light for high-sensitivity
detection experiments. The ZEN software is optimized for a 30" TFT monitor but can also be used with
dual-20" TFT setups.
Fig. 6
Show all mode
A focus in the development of ZEN 2009 was to fulfill the needs of both basic users and microscopy
specialists. Both types of users will appreciate the set of intuitive tools designed to make the use of a
confocal microscope from Carl Zeiss easy and fast:
The Show all concept ensures that tool panels are never more complex than needed. With Show all deactivated, the most commonly used tools are displayed. For each tool, the user can activate Show all
mode to display and use additional functionality (Fig. 6).
Fig. 7
ZEN Window Layout configuration
More features of ZEN 2009 include:
− The user can add more columns for tools to the Left Tool Area or detach individual tools to
position them anywhere on the monitor. To add a column, drag a tool group by the title bar (e.g.,
Online Acquisition) to the right and a new tool column automatically opens. Alternatively use the
context menu "move toolgroup to next column". To detach a tool, click on the little icon on the
very right end of the blue tool header bar (Fig. 7).
− Another unique feature in Imaging Software is the scalable ZEN interface. This Workspace Zoom
allows adjustment of the ZEN 2009 window size and fonts to the situational needs or your
personal preferences (Fig. 7).
− Setting up conventional confocal software for a specific experiment can take a long time and is
often tedious to repeat. With ZEN these adjustments have to be done only once – and may be
restored with just two clicks of the mouse. For each type of experiment one can now set-up and
save the suitable Workspace Layout. These configurations can also be shared between users.
− For most controls, buttons and sliders, a tool tip is available. When the mouse pointer is kept over
the button, a small pop-up window will display which function is covered by this tool/button.
These are just some of the most important features of the ZEN interface. For a more detailed description
of the functionality for the ZEN 2009 software, please refer to the User Manual that is provided with
your system.
Setting up a new image document and saving your data
To create a new image document in an empty image container, click the Snap
Auto Exposure
button. For an empty image document press the New
or the
The new document is immediately presented in the Open Images Area. Remember, an unsaved 2D
image in the active image tab will be over-written by a new scan. Multi-dimensional scans or saved
images will never be over-written and a new scan will then automatically create a new image document.
Acquired data is not automatically saved to disc. Make sure you save your data appropriately and back it
up regularly. The ZEN software will ask you if you want to save your unsaved images when you try to
close the application with unsaved images still open.
There is no image database any more like in the earlier Zeiss LSM software versions.
Fig. 8
New image document in the Open Images Areas
Advanced data browsing is available through the ZEN File Browser (Ctrl + F or from the File Menu).
The ZEN File Browser can be used like the WINDOWS program file browser. Images can be opened by
double-click and image acquisition parameters are displayed with the thumbnails (Fig. 9). For more
information on data browsing please refer to the detailed operating manual.
Fig. 9
File Browser
Turning on the lasers
ZEN 2009 operates all lasers automatically. Whenever they are used (manually or by the Smart Setup
function) the lasers are turned on automatically. The Laser Life Extender function of the software shuts
all lasers off if ZEN is not used for more than 15 minutes.
To manually switch lasers on or off:
• Click the show manual tools tickbox and open the Laser tool. All available lasers can be operated
within this tool (Fig. 10).
Fig. 10
Laser Control tool
Setting up the microscope
Changing between direct observation and laser scanning mode
The Ocular and Acquisition buttons switch between the use of the LSM and the microscope:
• Click on the Ocular button to open the controls for the
microscope beam path and for direct observation via the
eyepieces of the binocular tube, lasers are blocked.
• To set the hardware in position for using the microscope,
click Online if not yet active.
• To close the light shutters on the microscope click Offline.
• Click on the Acquisition button to move back to the
LSM system.
Setting up the microscope and storing
Click on the Ocular tab for direct observation;
press the Online button for your actions to take
effect immediately. Then open the Ocular tool to
configure the components of your microscope like
filters, shutters or objectives (Fig. 11).
Selecting an objective
• Open the graphical pop-up menu by clicking on
the Objective symbol and select the objective
lens for your experiment (Fig. 11).
• The chosen objective lens will automatically
move into the beam path.
Focusing the microscope for transmitted light
• Open the graphical pop-up menu by clicking on
the Transmitted Light icon (Fig. 12).
Fig. 11
Microscope Control window, e.g.:
Axio Imager.Z2
• Click on the On button. Set the intensity of the
Halogen lamp using the slider.
• Clicking outside the pop-up control closes it.
• Place specimen on microscope stage. The cover
slip must be facing the objective lens. Remember the immersion medium if the objective
chosen requires it!
• Use the focusing drive of the microscope to focus the object plane.
• Select specimen detail by moving the stage in X and Y using the XY stage fine motion control.
Setting the microscope for reflected light
• Click on the Reflected Light icon to open the
X-Cite 120 Controls and turn it on.
• Click on the Reflected Light shutter to open
the shutter of the X-Cite 120 lamp / HBO100.
• Click on the Reflector button and select the
desired filter set by clicking on it.
Storing the microscope settings
configurations (Fig. 13) by typing a config name in
the pull-down selector and pressing the save
button. Fast restoration of a saved config is
achieved by selecting the config from the pullload button. The
down list and pressing the
current config can be deleted by pressing the
Fig. 12
Microscope Control window with
Transmitted Light pop-up menu
Fig. 13
Configuration panel
These configurations can be assigned to buttons
that are easier to press.
Depending on the microscope configuration,
settings must be done manually if necessary.
Configuring the beam path and lasers
• Click the Acquisition button.
Smart Setup
The tool Smart Setup is an intuitive, user-friendly interface which can be used for almost all standard
applications. It configures all the system hardware for a chosen set of dyes.
to open the smart setup window. This window can
• Click on the Smart Setup button
be accessed any time from the software to change dye combinations.
• Click on the arrow in the dye list and simply choose the dye(s) you want to use in your experiment
from the list dialogue. In this dialogue, the dyes can be also searched by typing the name in the search
Fig. 14
Smart setup tool
Once finished with the input, Smart Setup suggests four alternative considerations (see below): One for
fastest imaging, one for the best signal, best compromise between both speed and best signal and
the optimal setup for later linear unmixing of the dyes.
The graphs display relative values for the expected emission signals and cross-talk. The resulting imaging
scheme (single or multitrack) is shown below the graphs.
Fig. 15
Proposals panel of the Smart Setup tool
Pressing Apply, automatically sets the hardware parameters in the displayed way for the dyes chosen.
If the option Linear Unmixing is selected, the system is set in the lambda mode automatically.
Pressing the Auto Exposure
button will then optimize the settings of the Gain (Master) and
offset for the given laser power and pinhole size. Further image optimisation from this point can be done
Setting up a configuration manually
Simultaneous scanning of single, double and triple labeling:
− Advantage: faster image acquisition
− Disadvantage: potential cross-talk between channels
Sequential scanning of double and triple labeling; line-by-line or frame-by-frame:
− Advantage: Only one detector and one laser are switched on at any one time. This reduces crosstalk.
− Disadvantage: slower image acquisition
• Open the Imaging Setup and the Light Path tool in the Setup Manager Tool group to access the
hardware control window to set-up the beam path.
The open Light Path is shown in Fig. 16.
Fig. 16
Light Path tool for a single track (LSM)
Settings for track configuration in Channel Mode
• Select Channel Mode if necessary (Fig. 17).
The Light Path tool displays the selected track
configuration which is used for the scan procedure.
• You can change the settings of this panel using the
following function elements:
Fig. 17
Imaging Setup tool for a single
track (LSM)
Activation / deactivation of the excitation wavelengths (check box) and setting of
excitation intensities (slider). If necessary open the Laser Control tool (see above).
Selection of the main dichroic beam splitter (MBS) from the relevant list box.
Selection of an emission filter through selection from the relevant list box.
Activation / deactivation (via check box) of the selected channel (Ch 1-4, monitor diode
ChM, QUASAR detectors ChS1-8, transmission ChD) for the scanning procedure and
assigning a color to the channel.
• Select the appropriate filters and activate the
• Click the Laser icon to select the laser lines and
set the attenuation values (transmission in %) in
the displayed window.
• For the configuration of the beam path, please
refer to the application-specific configurations
depending on the used dyes and markers and
the existing instrument configuration.
• In the Imaging Setup tool the Detection Bands
& Laser Lines are displayed in a spectral panel
(Fig. 18) to visualize the activated laser lines for
excitation (vertical lines) and activated detection
channels (colored horizontal bars).
Fig. 18
Detection Bands & Laser Lines
• For storing a new configuration click
enter a desired name in the first line of the list
box (Fig. 19), then click Ok to store the configuration.
• For loading an existing configuration click
then select it from the list box.
Fig. 19
Track Configurations window
• For deleting an existing configuration click
then select it from the list box and confirm the
deletion with Ok.
Settings for multiple track configurations in Channel Mode
Multiple track set-ups for sequential scanning can be defined as one configuration (Channel Mode
Configuration), to be stored under any name, reloaded or deleted.
The maximum of four tracks with up to eight channels can be defined simultaneously and then scanned
one after the other. Each track is a separate unit and can be configured independently from the other
tracks with regard to channels, Acousto-Optical Tunable Filters (AOTF), emission filters and dichroic beam
The following functions are available in the List of Tracks panel in the Imaging Setup Tool (Fig. 17,
Fig. 18 and Fig. 19).
Switch track every
Tracks are switched during scanning line-by-line. The following settings can be changed
between tracks: Laser line, laser intensity and channels.
Tracks are switched during scanning frame-by-frame. The following settings can be
changed between tracks: Laser line and intensity, all filters and beam splitters, the
channels incl. settings for gain and offset and the pinhole position and diameter.
Frame Fast
The scanning procedure can be made faster. Only the laser line intensity and the
Amplifier Offset are switched, but no other hardware components. The tracks are all
matched to the current track with regard to emission filter, dichroic beam splitter,
setting of Detector Gain, pinhole position and diameter. When the Line button is
selected, the same rules apply as for Frame Fast.
Add Track button
Remove button
An additional track is added to the configuration list in the Imaging Setup
Tool. The maximum of four tracks can be used. One track each with basic
configuration is added, i.e.: Ch 1 channel is activated, all laser lines are
switched off, emission filters and dichroic beam splitters are set in accordance
with the last configuration used.
The track marked in the List of Tracks panel is deleted.
A click on this arrow button will move the selected track (highlighted in light
grey) one position upwards in the list box.
A click on this arrow button will move the selected track (highlighted in light
grey) one position downwards in the list box.
Scanning an image
Setting the parameters for scanning
• Select the Acquisition Mode tool from the Left Tool Area (Fig. 20).
• Select the Frame Size as predefined number of pixels or enter your own values (e.g. 300 x 600) in the
Acquisition Mode tool. Click on the Optimal button for calculation of appropriate number of pixels
depending on objective N.A. and λ.
The number of pixels influences the image resolution!
Fig. 20
Acquisition Mode tool
Adjusting scan speed
• Use the Scan Speed slider in the Acquisition Mode tool (Fig. 20) to adjust the scan speed.
A higher speed with averaging results in the best signal-to-noise ratio. Scan speed 8 usually produces
good results. Use speed 6 or 7 for superior images.
Choosing the dynamic range
• Select the dynamic range 8 or 12 Bit (per pixel) in the Bit Depth pull-down in the Acquisition Mode
tool (Fig. 20).
8 Bit will give 256 gray levels; 12 Bit will give 4096 gray levels. Publication quality images should be
acquired using 12 Bit data depth. 12 Bit is also recommended when doing quantitative measurements or
when imaging low fluorescence intensities.
Setting scan averaging
Averaging improves the image by increasing the signal-to-noise ratio. Averaging scans can be carried out
line-by-line or frame-by-frame. Frame averaging helps to reduce photo-bleaching, but does not give quite
as smooth of an image.
• For averaging, select the Line or Frame mode in the Acquisition Mode tool.
• Select the number of lines or frames to average.
Adjusting pinhole size
• Select the Channels tool in the Left Tool Area.
• Set the Pinhole size to 1 AU (Airy unit) for best compromise between depth discrimination and
detection efficiency.
Pinhole adjustment changes the Optical Slice thickness. When collecting multi-channel images, adjust
the pinholes so that each channel has the same Optical Slice thickness. This is important for
colocalization studies.
Fig. 21
Channels tool
Image acquisition
Once you have set up your parameter as defined in
the above section, you can acquire a frame image
of your specimen.
• Use one of the Auto Exposure, Live,
Continuous or Snap buttons to start the
scanning procedure to acquire an image.
• Scanned images
• Click on the Stop button to stop the current
scan procedure if necessary.
Select Auto Exposure for
automatic pre-adjustment of
detector gain and offset.
Select Live for continuous fast
scanning – useful for finding and
changing the focus.
Fig. 22
Image Display
Fig. 23
View Dimensions Control Block
Select Continuous for
continuous scanning with the
selected scan speed.
Select Snap for recording a
single image.
Select Stop for stopping the
current scan procedure.
Image optimization
Choosing Range Indicator
• In the View – Dimensions View Option
Control Block, click inside the color field in the
button under the channel button
(Fig. 23).
Clicking on the right hand side of the
button leads to a list of colors.
The scanned image appears in a false-color
presentation (Fig. 24).
If the image is too bright, it appears red on the
screen. Red = saturation (maximum).
If the image is not bright enough, it appears blue
on the screen. Blue = zero (minimum).
Fig. 24
Image Display
Adjusting the laser intensity
• Set the Pinhole to 1 Airy Unit (Fig. 25).
• Set the Gain (Master) high.
• When the image is saturated, reduce AOTF
transmission in the Laser control section of the
Channels Tool (Fig. 25) using the slider to
reduce the intensity of the laser light to the
Adjusting gain and offset
• Increase the Digital Offset until all blue pixels
disappear, and then make it slightly positive
(Fig. 25).
• Reduce the Gain (Master) until the red pixels
only just disappear.
Fig. 25
Channels tool
Scanning a Z stack
• Select Z-Stack
tools area.
in the main
• Open the Z Stack tool in the Left Tool Area.
• Select Mode First/Last on the top of the
Z-Stack tool.
• Click on the
Button area.
button in the Action
A continuous XY-scan of the set focus position will
be performed.
• Use the focus drive of the microscope to focus
on the upper position of the specimen area
where the Z Stack is to start.
• Click on the Set First button to set the upper
position of the Z Stack.
Fig. 26
Z Stack tool
• Then focus on the lower specimen area where the recording of the Z Stack is to end.
• Click on the Set Last button to set this lower position.
button to set number of slices to match the optimal Z-interval
• Click on the
for the given stack size, objective lens, and the pinhole diameter.
• Click on the
Start Experiment button to start the recording of the Z-Stack.
When a multi-dimensional acquisition tool is not selected, the respective tool and its set parameters
are not included in the multidimensional image acquisition. If no multidimensional tool is activated,
be scanned.
Start Experiment button is grayed out and only single images can
Storing and exporting image data
• To save your acquired or processed images, click
on the Save or Save As button in File Menu,
or click the
button in the Main Toolbar
button at the
(Fig. 27/1), or click on the
bottom of the File Handling Area (Fig. 27/2).
Fig. 27
Save Image buttons in ZEN
• The WINDOWS Save As window appears.
• Enter a file name and choose the appropriate
image format. Note: the LSM 5 format is the
native Carl Zeiss LSM image data format and
contains all available extra information and
hardware settings of your experiment.
• Click on the Save button.
Fig. 28
Save as window
If you close an image which has not been saved, a
pop-up window will ask you if you want to save it.
Choosing yes will lead you to the WINDOWS Save
As window.
To export image display data, a single optical
section in raw data format or the contents of the
image display window including analysis and
overlays, choose Export from the File menu. In
the Export window you can select from a number
of options and proceed to the WINDOWS Save As
window to save the exported data to disk.
Fig. 29
Export window
Using the ConfoCor 3 module
• Click on the Acquisition button.
• Use the ConfoCor Tool Group in the Left Tool Area to acquire
and analyze FCS data.
Fig. 30
ConfoCor Tool Group
Setting a configuration
• Open the System Configuration tool to define the light
path, laser lines and pinhole
The Light Path and Pinhole panels of the System
Configuration window display the selected track
configuration which is used for the FCS procedure and the
pinhole size (see Fig. 31).
Fig. 31
The ConfoCor 3 Measure
Tool: System Configuration
You can change the settings of this panel using the following function elements:
Activation / deactivation of the excitation wavelengths (check box) and setting of
excitation intensities (slider). Open the Laser Control tool via the Laser icon.
Selection of the main dichroic beam splitter (MBS) or secondary dichroic beam splitter
(SBS) position through selection from the relevant list box.
Selection of a block filter through selection from the relevant list box.
Selection of an emission filter through selection from the relevant list box.
Activation / deactivation (via check box) of the selected channel.
• Set the Pinhole diameter (via slider or input box).
• Press the Count rate button to open the Real Time
display window for the detector Count rate in all active
channels. Adjust the Laser power In the Laser Control
panel to obtain a satisfactory count rate.
• Press Adjust Pinhole to align the pinhole for each newly
defined beam path. After adjusting the sample carrier,
align the pinhole automatically in X and Y by first
conducting a coarse and then a fine alignment.
Fig. 32
Pinhole adjustment
Fig. 33
Models tool
Use the Models tool to define model equations to which
measured data can be fitted.
You have three options to define a model:
− Correlation: assemble a correlation model from
predefined equations, which will be fitted analytically
− PCH: assemble a photon counting histogram model,
which will be fitted numerically
− Formula: program a user defined model equation,
which can be fitted analytically
Starting a measurement
• Select the Acquisition toolbar.
Fig. 34
The ConfoCor 3 Measure Tool:
The Times, Kinetics and Position panels of the
measurement conditions and the positions which are
used for the FCS experiment.
You can change the settings of this panel using the following function elements:
Enter the Bleach Time, Measureme Time and Repeat Count into the corresponding input boxes.
Activate / deactivate a kinetic procedure by ticking the Use Kinetics check box.
Enter the time distance between measurements, the cycle number and the shape
in the corresponding input boxes.
Select the carrier and the sample or laser position by the stage or by the
Press the New button to open a new FCS diagram into an image container. If a
measurement is triggered, all data are displayed in that window if highlighted.
Press the Count rate button to open the Real Time display window for the
detector Count rate in all active channels. This allows you to optimize your
experiment by changing the laser power and the pinhole size while monitoring
the count rate.
Press the xyz-Scan button to display the current coordinates. You can define
boundaries where a scan is performed with simultaneous acquisition of the count
rate. This allows you, for example, to identify labeled molecules accumulated in
the membrane.
Press the Snap button to trigger one measurement at the highlighted or first
defined position.
Press the Start ConfoCor Experiment button to trigger a measurement. All
defined positions will be approached consecutively.
Press the Stop button to end a measurement. All data accumulated so far will be
available and can be stored.
After measurement completion, the data is displayed in the FCS Correlation diagram within an Image
Container (see Fig. 35).
Fig. 35
FCS Correlation diagram
You have the following function elements:
Activate the FCS Correlation panel to display measured data (Fig. 35).
Press the View Options button to define the graph you want to display.
Press the Count rate button to display the count rate trace.
Press the Correlation button to display the correlation function.
Press the Photon counting histogram button to display the photon distribution per
time unit.
Press the Data Options to handle your data.
Press the Save Data button to open the Save window. You can save the whole data
set in an ANSI text format. Optionally you can save the raw data trace if that option was
set in the FCS Options.
Pressing the Reuse button will set the system configuration to exactly the same values,
as used in the experiment.
Pressing the Reload button will open the current measurement, if stored raw data are
available. This allows you to alter the parameters of your mathematical calculations.
Analyzing the data
The acquired FCS data is analyzed in the Fit display of the FCS diagram (see figure Fig. 36).
Fig. 36
FCS Fit diagram
You have the following options:
Activate the FCS Fit panel to display fitted data (Fig. 36).
Set the red and blue bars to define the start and end points of the curve fit window.
Load a predefined model from the Model drop-down menu. You can assemble a model
by pressing the Model tool in the ConfoCor tool group.
Define the conditions of the fit by activating / deactivating terms, setting the type of a
parameter (fixed, free, or start value), defining limits and globally link parameters in the
Model table.
Pressing the Fit button will fit the current loaded correlation functions to the defined
model. The fitted data will be displayed in the Model and Result tables.
Pressing the Fit all button will take all ticked channels and fit them according to the
chosen model.
Pressing the Undo button will cancel the last operation, or previous ones as well, if the
button is pressed repeatedly.
Pressing Redo will redo the last cancelled operation, or previous ones, if the button is
pressed repeatedly.
Pressing the Write to Method button will write back the settings to the method. If the
method is stored, the settings will be active when the method is selected the next time.
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