13Mode Setting332211Timing ChartsWhen set to Mode 1For setting the shutter speed using the trigger pulse widthHD/VD input Continuous VD input*1 This is a signal input from outside. Make sure toinput both HD and VD signals.*2 Exposure time (Te)Te = Trigger pulse width + 97μsec (EIA)Te = Trigger pulse width + 120μsec (CCIR)(The effective trigger pulse width for the externaltrigger shutter operation is between 2μs and 1/4 s.)*3 The normal operation state is chosen when thetrigger pulse width is 1/3 s or more. The triggerfalling edge restores the external trigger shutteroperation. In this case, the area between the fallingedge of a trigger pulse and the subsequent 50 msperiod is an external trigger input inhibition area.There is no guarantee of operation for any triggerinput selected in this period.*4 If there is a falling edge on the external VD withina period of –65 to +10μs from the falling triggeredge (1 and 2 in the figure), it is not definedwhether the image is output for the external VDfalling edge or the image is output for the nextexternal VD falling edge. (1 in the figure showsthat the image is output for the next external VD.2 shows the image for the external VD.) In thiscase, see WEN since output of the image and WENmake up a pair. In any other cases, the image isoutput for the external VD falling edge after thetrigger falling edge (3 in the figure).*5 When the external trigger shutter mode changes tothe normal operation mode, one WEN signal isoutput.NoteAn image is not output correctly when the next trigger isinput before the image for the previous trigger is output.External trigger shutter operation Normal operation*3Mode transition stateExternal inputinhibition area(50 ms)External triggershutter operationExposure time (Te)*2 Exposuretime (Te)*2 Exposure time (Te)*2Trigger pulse width*3T: T=under 10μs*4 T: T=under 10μs*410μs or more250 H (EIA)293 H (CCIR)65μs10μsTrigger*1External HD*1External VD*1(ContinuousVD)EXT-VDVideo outWENTRGEXT-VDEXT-VD*5