sync the camera with outputs daq

Hello

I am a newbie of LV, your patience is appreciated

I work with a gigabit Prosilica GE 680 camera connected to my computer via Intel PRO 1000 G/T and I also work with a M NI USB 6212 BNC series. Connected to the nor-daq is a source of light on each of the AnalogOut0 and AnalogOut1, as well as 3 analog: read analog two of the three outputs, the other entrance is a signal of the camera by saying that it is imaging or not.

I was debugging the code from someone who is no longer around to help. The code basically allows the user to synchronize two things: 1) capture and recording of a number of specified length avi, which in my hands, is typically movies of 2 sec to 200 images per second AND 2) to turn off the two sources of light at times during the movie and specified. The problem is in the precise timing of the light sources with the camera exposure period.

From now the lights turn on and off in my movies, which is good. The problem is that the camera lights late compared to the signal of departure as evidenced by the output signal "imaging" sent by the camera in one of the analog inputs. The result is that the lights seem to lights at the beginning of the avi saved since the movie begins later that it is specified. It's not ideal.

What changes should I make to the labview code to make sure that the camera is precisely synchronized with the analog?

Thanks and let me know what information you need from me.

-Alex

Hello again,

I solved the problem. It was a hardware problem. Using SyncOut2 instead of SyncOut1 on my camera Prosilica 680 GE gave me the schedule that I specify. No major code changes was necessary, other than changes to support the change of equipment.

The question remains as to why works SyncOut2 and SyncOut1 does not. After consulting the technical manual for the camera, I realized that the use of SyncOut1 requires that I use the ground isolated on 12 IO pins my camera. Although I am a novice to the electronics, it seems to me that this would require a line that goes from the isolated ground my mass of the external circuit DAQ. I didn't get it, even if I did when I tried SyncOut2. This missing connection can have an impact on power SyncOut1 send a trigger to the acquisition of data.

I understood what the analog input wavegraphs look like now that the timing is good.

Despite the outstanding issues I will mark this as resolved issue.

Tags: NI Software

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