Acquisition Settings - Acquisition - General

This dialog box offers you several general options for working with live images. You can open this dialog box, for example via the camera control. In the toolbar of the Camera Control tool window, click the Acquisition Settings bb_camera_settings button. Select the Acquisition > General option in the tree view.

Description of the function groups

Live

Calibration

Movie Display

Camera Protection

See also

Overview - Acquisition Settings

Live

The live-image will be allocated its own window in the document group. This window's title will be Live (active). The behavior of this live window depends on the settings in the Live group.

You will find step-by-step instructions for the image acquisition with the live window's different behavior patterns here.

Closing the live window when stopping the live-image

Select the Close document when Live is stopped option, to have the live window closed every time you exit the live mode.

live_on When you exit the live mode by clicking the Live button, in this case, no image will be acquired.

bb_snapshot To acquire an image, exit the live mode by clicking the Snap button.

Keeping the live window when stopping the live-image

Select the Keep document when Live is stopped option to keep the live-image when you exit the live mode.

bb_snapshot When you exit the live mode by clicking the Snap button, the live-image will be stopped and additionally an image acquired. You will find the stopped live -image in the image window with the title Live (stopped). You can save the stopped live-image just as you can every other image.

Note: A stopped live-image is not the same image as the acquired snapshot. This means that you can, e.g., set a different resolution for the live-image and the snapshot acquisition. In that case, a stopped live-image and an acquired individual image each have different resolutions.

live_on When you exit the live mode by clicking the Live button, the behavior in this mode depends on the status of the Create new document when Live is started check box.

Creating a new document when the live mode is started

The Create new document when Live is started check box is only relevant when you've selected the Keep document when Live is stopped option.

Clear the Create new document when Live is started check box, to have only one single live window.

When you exit the live mode by clicking the Live button, you will find the stopped live-image in the Live (stopped) live window. The next time you start the live mode, the contents of the live window will be overwritten.

Select the Create new document when Live is started check box, if you want to have a new window opened every time you start the live mode. In this way you'll prevent the overwriting of the last live window's contents.

If you finish the live mode now, the stopped live-image is kept in all cases. A new image document will be created for the stopped live-image.

Use this settings (Keep document when Live is stopped together with Create new document when live is started) e.g., when you want to make a measurement in the live-image. When you have finished making your measurements, stop the live-image. You can then save the image you have measured along with the measurements. When you start the next live-image, you can perform a new measurement.

Continuing the live mode after a snapshot

bb_snapshot Select the Restart live after snapshot check box to only make a pause in the live mode while you acquire a snapshot. A snapshot acquisition will then create a new image window, but the window for the live-image will remain active and will immediately switch back into the live mode.

live_on To exit the live mode, click the Live button, located in the Camera Control tool window.

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Calibration

Choosing the basic unit

You can set the basic unit for the X/Y-calibration that is to be used for the image acquisition. To do so, select the unit you want to use from the Basic Unit list. As basic units Meters [m] and Inches [in] are available.

When you select another basic unit, all of the images that you from that moment on acquire will be automatically calibrated in this new basic unit. Now, all values that apply to the X/Y-calibration will be specified in this new basic unit. In detail these are:

the labeling of the scale bar

the calibration data in the Properties tool window

the measurement results when you make measurements on an image

 

Note: The basic unit for the X/Y-calibration of images you have already acquired will not be changed, when you alter the basic unit. If you have acquired an image with the basic unit Meters it will remain calibrated in meters or in a unit derived therefrom, such as mm or µm. If you wish to measure this image in another basic unit, use the Image > Calibrate Image... command to alter the basic unit.

Calibrating image manually after acquisition

Select the Confirm magnification after acquisition check box, to have the Calibrate Image dialog box automatically opened after every image acquisition.

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Movie Display

If you want to record a movie you can select here between:

No online display - while recording a movie it is not shown live, but the progress bar is. Recommended for computers with low performance, e.g. low memory, slow hard disks etc.

Fast display of current frame - while recording a movie its current frame is shown in the live acquisition window. Recommended with high performance computers with a lot of memory and fast hard disks.

Online navigation - currently without function.

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Camera Protection

If the camera is illuminated by high light intensity for a long period of time, the camera's sensitivity at that position may be reduced. You then need to acquire new shading correction images. Use automatic camera protection to protect the camera from this.

Select the Camera time-out check box to switch on automatic camera protection. In the minutes field, enter the interval after which you want automatic camera protection to be activated.

Automatic camera protection is activated when the camera is illuminated but you don't work with it for longer than the specified interval.

When you are working with a camera that is mounted below the microscope column, this is the case when the fluorescent screen on your transmission electron microscope is raised and the beam blanker is turned off, for example. Automatic camera protection switches your system to the Protection observation method automatically. The fluorescent screen is lowered to protect the camera.

When you're working with a side-mounted camera, the camera will be retracted from the microscope column.

As soon as you switch back to the live mode, you can go back to working as usual.

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