8 frequency counter channels, 16 isolated digital I/O channels, 2 isolated DAC channels in a single card  Single frequency measurement range that works from 0.05 Hz to 1 MHz  Very stable TCXO base clock, 50 MHz ±1 ppm  195 kΩ Input impedance with selectable coupling (AC/DC)  Wide differential input voltage range (±48 V) with up to 250 V working common mode voltage  Programmable threshold and hysteresis levels with 1 mV resolution  Support for quadrature encoder  Isolated DIO channels with up to 60 V compliance  Isolated and independent 16-bit DAC channels, configurable for voltage or current output