Chapter 3 Optics and Lighting Device parameters are referred to as camera parameters that are saved outside of a job, such that they can be applied globally or independent of a job as well as updated outside a job. These parameters include photometry settings (gain and exposure), focus, and white balance gain. • A new job will always inherit the current “device data” so you do not need to re-calibrate the device. • The device data for focus, photometry, white balance, and dimensional calibration exists in two places at all times: – In the job (copied from the device data at job creation); – On the device’s global /Config flash folder.
• Whenever the device parameters are calibrated, two things happen: – The device global data is updated in the /Config flash folder; – The job loaded in RAM is updated with the new data. • The Use Fixed White Balance option controls whether the device parameters (white balance gains) are updated when the job is loaded from flash or downloaded to RAM with the device-wide values, or if the values last saved in the job are used instead. – Normal: Device parameters are updated when the job is loaded from flash or downloaded to RAM with the device-wide parameter values (from the acqcfg file).
• If a job is opened on the PC or from a flash job slot on the device, and if a device parameter is unlocked, the value saved in the global device parameter file (acqcf) is used. – Job device parameter value (RAM) = Global device parameter value (/Config flash folder). 3-16 Vision HAWK Smart Camera Guide