BM-500GE / BB-500GE42LVAL_async timingFig.27 Edge Pre-select LVAL a-sync TimingNote: In case PE value is between 2 or more and 4 or less, LVAL a-sync mode is set.8.6.3 Pulse Width Trigger ModeIn this mode the accumulation time is equal the trigger pulse width. Here it is possible tohave long time exposure. The maximum recommended time is <2 seconds.The accumulation can be LVAL synchronous or LVAL a-synchronous.The resulting video signal will start to be read out after the trigger rising edge.For timing details, refer to fig. 18. through fig. 23 and fig. 26 and 27.To use this mode:Set function: Trigger mode PWCScanning Full, PartialVertical binning ON / OFF(BM-500GE only)Draft Mode ON / OFF(BB-500GE only)Accumulation LVAL sync / LVAL a-syncOther functions and settingsInput: Ext. trigger. GigE interface or 12-pin HiroseImportant notes on using this mode Trigger pulse width >2LVAL to <2 seconds The following table shows minimum trigger interval in synchronous accumulation modeFull scan 2073 L2/3 Partial 1563 L1/2 Partial 1305 L1/4 Partial 918 L1/8 Partial 726 LV Binning 1039 LIn case of asynchronous mode, the exposure time should be added to the above table.5.37 μs ± 1μs2 L(min.)CCD exposureEENFVAL2L to 3LExposure timeTrigTrigger input during FVAL LOW periodLVAL a-SYNC mode setting