Basic Operation and FeaturesBasler A500k 3-25PRELIMINARY3.3.4.1 Free-run Mode with Asynchronous TimingFigure 3-20: Free-run, Programmable Mode - Exposure Start and Stop with Frame Valid LowThe effective exposure starts and stops while the Frame Valid signal is low. The FlashOut signalis set to high while the effective exposure occurs. The start, stop, and duration of the effectiveexposure are defined in the following ways (see Figure 3-20):• The effective exposure starts d microseconds after the rise of the internal control signal(exposure start delay).• The duration of the effective exposure is defined by Timer 1.A504k/kc A503k A501k/kcp Exposure as set by Timer 1d 1.9 μs 1.9 μs 7 μsInternalControlSignal p = Timer 1Internal Control Signal PeriodTimer 23 μs (A504k/kc)3.5 μs (A503k)20.1 μs (A501k/kc)FrameValidLineValidd = 1.9 μs (A504k/kc)d = 1.9 μs (A503k)d = 7 μs (A501k/kc)IntegrateEnabledp = Timer 1TIMING CHARTS ARE NOT DRAWN TO SCALE
