Operation and Features3-6 BASLER L100k SeriesDRAFT3.2.2 Free Run3.2.2.1 Basics of Free-run Controlled 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 Timer 2 determines how long the signal will remainhigh.When the camera is operating in free-run, the length of the control signal period determines thecamera’s line rate. The control signal period is equal to Timer 1 plus Timer 2:When the camera is operating in free-run, it exposes and outputs lines continuously.In free-run, two modes of operation are available: edge-controlled and programmable.• In free-run, edge-controlled mode, the pixels are exposed and charge is accumulated overthe full period of the internal control signal (rising edge to rising edge). The falling edge of thecontrol signal is irrelevant. The line is read out and transferred on the rising edge of the inter-nal control signal (see Figure 3-5).In this mode, the exposure time is the sum of Timer 1 plus Timer 2:Figure 3-5: Free-run, Edge-controlled ModeTimer 1 Timer 2+ Control signal period 1Line rate-----------------------= =Timer 1 Timer 2+ Exposure 1Line rate-----------------------= =Timer 2 Timer 1Exposureline read outControl Signal PeriodInternalControlSignal
