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Ok more findings. If I set camera->SetFrameRate(50) then FrameID always returns in the steps of 2 frames, even if I clock the camera at 1fps using external clock.

Now I think it does depend of fps, so it is not as useful when clocking the camera myself. Please let me know if there is a way to find missed frames while using the external clock.

<t>Does FrameID always increase based on max fps (for V100R2 being 100) or camera->SetFrameRate will affect it. I am trying to find why for 50fps FrameID increases by 2 at every capture (seems more predictable to assume a drop).<br/> Meanwhile I am using OptiHub2 and clock it by External Sync in.</t>

<t>What happens to the frame ID if a frame is lost (bad frame). For example if FrameID == 10 and next frame is invalid, starting the next valid frame do I get FrameID == 12 or FrameID == 11? <br/> Similar t this question; what happens to TimeStamp() if a frame is lost?<br/> <br/> The reason I am ask...

<t>Thanks Seth, yes this is the exact cabling I have (it is only one OptiHub I have). <br/> It was just not so intuitive that after "synch.SyncType = SyncTypeOptiSync;" I also had to use "synch.CameraSync = SyncForceUSBSync;". <br/> <br/> I did try, without the latter option (SyncForceUSBSync) camer...

<t>I finally figured it out (I hope). <br/> Apparently I had to use:<br/> <br/> synch.CameraSync = SyncForceUSBSync;<br/> <br/> Otherwise I had to have the sync wire connected all the time (even for OptiSync). I appreciate if you have any more information (or API document), this option is not well d...

Thanks for the answer, yes I also thought that is the case, but it seems when no RCA cable is connected camera capture returns frames as if no sync is in place. I was wondering if the above options are the only settings I need to set to get this behaviour.

<t>I have OptiHub. I want the camera frames to be synchronized to an external source (a DAQ that generates square pulses). It works great if I run a wire from OptiHub's "Hub Sync Out" to camera's sync input; when pulses are stopped frames are stopped, when pulses are generated frames get coming, but...

Thanks for the information, I think I should get an OptiHub then, but I was wondering if the specs for sync in is available to the public.
Once we are at it, when I have OptiHub, do I need to use ApplySyncSettings in the SDK to make camera use the external synch?

<t>Is it possible to use an external signal generator that can generate an active low/high signals of given duration to trigger V100R2 camera frame captures? My goal is to synchronize frame capture to my DAQ, and my DAQ can generate any analog output that is needed.<br/> Do I need OptiHub even if I ...