re high resolution adc for mac ii in article qidk innhk iskut ucs ubc ca rob douglas douglas ecc ubc ca wrote in article qhfmg hoh lll winken llnl gov charles e cunningham cec imager writes i would like to buy a bit adc card for the mac ii with digitization rate of at least khz preferably khz i would prefer one with good differential and integral linearity and dma would be a plus other than national instruments do you know of any other vendor who sells such a card instrutech corp has a nice looking bit a d and d a board that can run at the speeds you want the itc doesn t have dma but it does have a good sized fifo that can buffer your samples instrutech can be reached at or fax i don t know about the instrutech boards though i plan to check them out but you need to be very careful checking the monotonicity and s n ratio of many of the bit boards out there the ni boards are very clearly specified in terms of monotonicity s n ratio accuracy etc and the nb a and nb a have all the dyynamic range and freedom from distortion that you d expect from a good true bit converter this is not true for the spectral innovations boards for example
