Basler A102K User Manual
Also see for A102K: User manual
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Contents
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Operation and Features3-10 BASLER A102kDRAFT3.2.2 Free-run OperationIn free-run, no ExSync signal is required. The camera generates a continuous internal controlsignal based on two programmable parameters: "Timer 1" and "Timer 2." Timer 1 determines howlong the internal signal will remain low and the Timer 2 determines how long the signal will remainhigh (see Figure 3-8). The control signal period is equal to Timer 1 plus Timer 2.When the camera is operating in free-run, the length of the control signal period determines thecamera’s frame rate. (Frame Rate = 1/Control Signal Period.)When the camera is operating in free-run, it exposes and outputs frames continuously.In free-run, only the programmable mode of exposure time control is available.• In free-run, programmable mode, the pixels are exposed and charge is accumulated whenthe internal control signal is low. The frame is read out and transferred on the rising edge ofinternal control signal (see Figure 3-8).In this mode, the length of exposure can be programmed as desired by varying the setting ofthe "Timer 1" parameter:Figure 3-8: Free-run, Programmable ModeYou can set the camera to operate in free-run using either the camera configuration tool CCT+(see Section 4.1 and the configuration tool’s on-line help) or binary commands (see Section 4.2).With the CCT+, you use the Exposure Time Control Mode setting on the Exposure tree to set thecamera for free-run programmable exposure time control mode. If you choose to operate thecamera in free-run, you can also adjust the frame rate and exposure time. The CCT+ will thenautomatically set the Timer 1 and Timer 2 parameters so that the camera will operate with theframe rate and exposure time that you enter.With binary commands, you must use the Exposure Time Control Mode command to select thefree-run, programmable mode. You must also use the Timer 1 command to set Timer 1 and theTimer 2 command to set Timer 2.Timer 1 Exposure=Timer 2 Rest of control signal period=Timer 1 + Timer 2 Control signal period=Timer 1Timer 2Exposureframe read outControl Signal PeriodInternalControlSignal |
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