whiteBalanceMode, Device Specific Properties, SRC

I also have a question about this.

When I use get(src); the command line returns: get(src); General Settings: Parent = [1x1 videoinput] Selected = on SourceName = input1 Tag = [0x0 string] Type = videosource

      Device Specific Properties:
        ExposureTime = 0.5
        InternalLineSpeed = 0.66705
        TriggerTimes = 1
Why do I not have any of these device specific properties????? Device Specific Properties: BacklightCompensation = on Brightness = 255 BrightnessMode = auto Contrast = 127 Exposure = 511 ExposureMode = auto Focus = 58 FrameRate = 15.1500 Gamma = 0 Iris = 4 Saturation = 108 Sharpness = 127 WhiteBalance = 100 WhiteBalanceMode = auto