Tecnai on-line help manual -- Options - UT Southwestern

<strong>Tecnai</strong> on-line help Options 26Options Software version 21.7 TV / CCD tabThe TV / CCD tab of the Low Dose Control Panel contains the information that Low Dose uses withregard to cameras (TV and CCD). The system works in combination with the settings defined for theSearch, Focus and Exposure states. In some cases Low Dose automatically detects what cameras areon the system, while in other cases the user has to add some. The following are detected automatically:• If an off-axis TV is present in the microscope software configuration, the off-axis TV-rate camera boxis always checked (the user cannot remove the check mark). The same applies to the "TV-ratecamera present check box".• If a Gatan Imaging Filter is present, the GIF TV camera (retractable) is assumed to the present andthe box (bottom left) is checked. Once again, the user cannot remove this check.• All CCD cameras are automatically detected and their location is either retrieved from the storedmicroscope configuration (e.g. Tietz cameras) or from their name (e.g. Gatan). In the case when thenaming of a camera is possible, the names must be as follows: if the CCD camera is in the wideangleport (above the projection chamber), the name must have the character sequence "WA"; if thecamera is that of a GIF (Imaging Filter), the character sequence "GIF" must be in the name; if it is anoff-axis CCD, the character sequence "off-axis" must be present in the name. Upper- or lowercasedoes not matter. All cameras not having the above character sequences are assumed to be on onaxisbelow the projection chamber. Cameras identified are indicated by check marks in the boxes onthe right-hand side of the schematic microscope picture. Once again, these check marks cannot bechanged.