Maximum Number of Single-Ended Analog Input Channels: 16. Maximum Number of Differential Analog Input Channels: 0. Maximum Sample Rate: 500 S/s. Analog Input Resolution: 24 bits. Analog Input Current Range: -20 mA to 20 mA. Analog Input Isolation: 60 VDC Ch-Earth Ground Isolation. Front Connection Type: D-Sub. Conformal Coated: No. Enclosed: Yes.