... digital input/output 3.Software auto-calibration 4.256K word RAM/ch PCIe955414-bit 4MS/s 4-ch synchronization input Features ... : 4MS/s/chChannel No. : 4-ch synchronization analog input AD Memory: 64K word FIFOAnalog Input Range: ±5V, ±2.5V, ±1.25V ... : analog, digital12-bit 1MS/s 2-ch analog outputDA Memory: 256K word RAM/chAnalog Output Range:0~5V, 0~10V, ±5V,±10V16 ...