In interlace mode, two scans of the CCD are required for building each image frame. The first field starts from the top of the image, and the second field starts from half a scan line below the top. This vertical offset by half a scan line effectively increases vertical resolution of the image. Bias is a software controlled parameter for most Electrim camera models, and is directly proportional to brightness of an image. Gain is another software controlled parameter for most Electrim camera models, and is directly proportional to image contrast.
Electrim products are computer cameras.
Electrim camera heads produce analog output signals, which are digitized on the supplied interface card. Ultimately, the digital image data is stored in computer memory via the ISA or PCI bus. Electrim cameras are not portable or stand alone, they must be used with a computer for operation. Please contact Electrim for a current list of these suppliers. Electrim cameras implement external triggering by means of special driver software in conjunction with a user supplied interface, typically a standard parallel printer port as found on most computer systems.