The PCI-1800(H/L) and PCI-1802(H/L) are high performance, multifunction analog, digital I/O board for PC and compatible computers in a 5V PCI slot. This series features a continuous, 330K samples/second, gap-free data acquisition under DOS, Windows 95/98 and Windows NT 3.51/4.0. This family has the same features: one 12-bit 330K AD converter, two 12-bit independent DA converter, 16 channels TTL compatible DI and 16 channels TTL compatible DO. The 1800H/L provides 16 channels single-ended or 8 channel differential inputs. The 1802H/L provides 32 channels single-ended or 16 differential inputs. The letter `L' denotes the low gain and the `H' denotes the high gain. Two DACs of this multifunction card are independent bipolar voltage output with jumper selectable voltage output range. The AD scan function of 1800 series is very amazing, we call it “MagicScan". It scans with two modes: the fix channel mode and the channel scan mode, both modes can be up to 330K samples per second. We also provide three trigger modes for this series: software trigger, pacer trigger and external trigger, each trigger modes use “MagicScan" to perform the data acquisition. The external trigger can be programmed to one of the three trigger methods : pre-trigger, posttrigger and middle-trigger. The PCI-1800/1802 fully supports “ Plug and Play " under Windows 95/98.