After the cameras are positioned align the projected cross with the central mark on the calibration plate and proceed.
<aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/bcad5419-35ee-4032-8083-b3f6372270b7/blank.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/bcad5419-35ee-4032-8083-b3f6372270b7/blank.png" width="40px" /> Please note, at the correct location of plate at a distance the vertical line of cross will match the central vertical blue line on the view from the cameras. Otherwise, you will notice the difference in one direction or the other.
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Before setting the exposure adjust the sharpness of the lenses:
It is convenient to use camera view zoom by left-clicking the camera views to assess sharpness.
Set the projector to the lines and stripes mode. Set the exposure for the cameras between 30 and 60 (less if the scanning object is dark and more if it is bright). By default the value is 50.
Areas illuminated with red mean overexposed areas where the image is too bright.
Configure lenses iris so that the lines on the calibration plate are as bright as possible, but without a significant amount of excessive light. Image brightness of both cameras must be the same!
<aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/d55d38ae-b40e-4d78-9ff5-42ae308eebd1/blank.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/d55d38ae-b40e-4d78-9ff5-42ae308eebd1/blank.png" width="40px" /> In order to better align the same exposure on both chambers, you can leave a small area with excessive light (red area). The same "figure" of area with excessive light on both cameras will allow to more accurately set up the diaphragm of lenses.
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<aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/aec0a33f-f33f-420b-9467-e8c2163bff49/blank.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/aec0a33f-f33f-420b-9467-e8c2163bff49/blank.png" width="40px" /> If excessive light does not disappear even when the diaphragm is closed, reduce the value of electronic exposure. Check the projector settings, probably the light is too bright. Reduce ambient light level.
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If you are setting up for the ”S” FOV, it may be necessary to decrease the brightness of lines and stripes due to the close distance to object. Decrease the brightness value, as shown in the figure. Brightness value of lines is approximately 2 times greater than the brightness of the stripes. Visually lines and stripes must be the same brightness.
<aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/9a05528b-9365-4e1a-980f-c8577cc7b353/blank.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/9a05528b-9365-4e1a-980f-c8577cc7b353/blank.png" width="40px" /> After the end of the setting up procedure carefully lock sharpness and diaphragm rings with screws on the camera lenses in order not to lose their position.
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