The last technological evolutions of imaging techniques and the appearance of new kinds of TV cameras lead us to think of new image acquisition and processing devices. Several kinds of cameras are operated in our laboratories with different video output signals (200 ms frame, CCIR and RS 170 standards, 40 ms image mode, sampled CCD output), so no existing acquisition device was easy to transfer between different experiments. Our new image memory is then designed to be linked to any TV camera. It can be connected to our computers too, through its IEEE 488 interface, although it may work on its own. Its three main purposes are - signal acquisition, managed by a 8086 microprocessor, which can be externally triggered ; - memorizing of four 512 x 512 x 8 bits images on which some pre-programmed processes can be performed ; - bi-directionnal communication of data with a computer or an image processing device, through three kinds of links. We tested that image memory on a laboratory setup, on which we stored images delivered by a CCD camera. We present here a comparison between those results and those obtained on the same setup with a Pericolor 1000, and we emphasize on the automatic conversion threshold adaptation, and on the possibilities of adjusting the conversion scale, allowed by this device.