... card 4-channel 32-bit counter 4-channel digital input/output PCI2394 data acquisition cardFEATURES:pci bus data ... Mode: none, X1, X2, X4, dipulse, single pulseMaximum input and output signals switching frequency: 10 kHz (square wave)Sample ... (with digital filter) 4MHz (without digital filter)Opto-isolated: 2500Vrms Digital Input :Input Channels: 4-channel digital inputOpto-isolation: 2500Vrms Digital ...