JAI AM-800CL User Manual

Also see for AB-800CL: User manual

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JAI AM-800CL User Manual Manual pdf 19 page image

AM-800CL / AB-800CL- 17 -5.4.2 Partial scan readout (AOI) (Commands: STL, ETL)The AOI works like partial scanning. By using the AOI function, a faster frame rate can beachieved. The start line of the image (Offset Y) and the image height (Height) can be set asdesired. However, the start pixel and/or end pixel of each line cannot be changed. In theAM-800CL and AB-800CL RGB output, The Offset Y and Height can be set in 1 lineincrements. For the AB-800CL Bayer mode, output can be set in 2-line steps.Fig.14 AOI settingNote for AOI settingIn the AM-800CL and AB-800CL, the frame rate setting has priority. If AOI is used, the framerate setting should use fewer lines that that of AOI height.For AOI setting, if the upper TAP and lower TAP have the same duration, the fastest framerate can be achieved. Thus, if the AOI is centered vertically within the image, the framerate is maximized. Examples of the settings are shown in sections 5.4.2.4 and 5.4.2.5.5.4.2.1 Frame rate calculation if AOI is setThe calculation method for the frame rate in AOI mode depends on the settingconditions of offset, height, Bit Allocation and binning control.It also depends on the position of the readout such as the upper TAP, lower TAP andcovering both TAPs.Fig.15 the position of the readoutTapBTapAA BC D(TAP C + TAP D)(TAP A + TAP B)OFFSET YHeightA BDCCenter partUpper part (Upper)Upper part (Lower)Lower part part (Upper)Lower part (Lower)