JAI LT-200CL User Manual

Contents

JAI LT-200CL User Manual Manual pdf 46 page image

LT-200CL458.20 Command LR - Line Rate (Scan Rate)This function is used only when there is no external trigger pulse (e.g. from anencoder) available. It allows the user to program the line rate, in order to match thespeed of the object being scanned. In the No-Shutter mode, the exposure time isdirectly proportional to the line rate (Texp = 1/line rate)Settings: 2633 to 1347584,32.9125μs to 16.844ms in 12.5ns incrementsAssociated functions: Trigger origin, TG=0Applicable modes: No-Shutter with internal line rate generator (TR=0)Shutter-Select with internal line rate generator (TR=1)Important note The data can be stored in the camera memory for next start up.Refer to chapter 6.3.1 Line rate (Command LR) for further details8.21 Command NR – Noise reductionThis command activates noise reduction circuit.Settings: 0=OFF, 1=ON8.22 Command PBC – Select pixel black correction modeThis command enables (or disables) the “pixel black level” correction function, whichcompensates for Dark Signal Non Uniformity (DSNU / FPN) for individual pixels.Settings: 0 = Off (Bypass)1 = Factory setting2 = user areaAssociated functions: Command PBRApplicable modes: All8.23 Command PBR – Run pixel black correction and store to user areaThis command initiates the “pixel black level” correction function, and stores thesettings in the user area. When this function is activated, lens must be capped.Settings: 0 = Run this functionAssociated functions: Command PBC must be set to 2Important note: This function requires that no light reaches the image sensors. The lens musttherefore be covered by a lens cap, or put the F-mount protective cover on thecamera, when executing this function. As the black level is influenced by the exposure time (especially for long exposuretime, at slow scan rates) it is recommended to perform the pixel black correction atthe exposure time and line rate at which the camera will be operated.