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Tile (Window Menu): The "Tile" command arranges multiple windows in an overlapped fashion, either vertically or horizontally. Toolbar: The Toolbar provides some of the same options as the Menu Bar, but with icons replacing drop-down menus. It is located directly below the Menu Bar, at the top of the Main Window. Note that not all items in the Menu Bar have a corresponding icon on the Tool Bar. Toolbar (View Menu): The "Tool Bar" option is used to display or hide the Movie and Main Tool Bars. These tool bars can be toggled by clicking this menu item on and off. If a Real-time window is active, this menu item affects the Main Tool Bar. If a Movie window is active, this menu item affects the Movie Tool Bar. Trigger Force: See "Triggering". Triggering: Refers to the Recording Parameters dialog box. This dialog box allows you to ‘trigger’ the start of a recording based on a force value. If you enter a value in the ‘Trigger Force’ field, and select the appropriate measurement units, recording will not begin until that force is exerted on the sensor. Enter a zero in this field to disable ‘triggering’. Only one Trigger Force value may be entered, and will apply to all sensors being used for testing. See "Recording Parameters". U Uncalibrate (Tools Menu): The "Uncalibrate" command removes the sensor’s calibration data. When this item is selected, a dialog box will appear, giving the option of canceling the Uncalibrate operation. Uncalibrate does not affect the Sensitivity setting. See "Sensitivity". WELF: The Wireless ELF System. W Z Zeroing Preload (Tools Menu): The "Zeroing Preload" command modifies the calibrated data to correct for residual pressure (referred to as the ‘Offset Load’) on the sensor at zero load. This operation is useful if the sensor is under some load for the entire duration of the recording, or if the sensor must be secured in place by hardware which would cause load to be detected by the sensor. The raw data is not affected by the Zeroing Preload function, but an extra calculation is performed when converting the raw data to calibrated data. If the sensel is reading raw pressure, it is set at zero raw before the calibration scale factor is applied. Zeroing Preload is recommended only for single point calibration and may increase error when using a multi-point calibration. 02/05/15 ELF User Manual (Rev N) 77