ADLINK PCI-7251 is a 5V PCI DIO card extension card for PCI-7250. PCI-7251 provides 4-CH SPDT (Form C) & 4-CH SPST (Form A) relay outputs and 8-CH isolated digital inputs. The status of each relay output on PCI-7251 is represented by an onboard LED. When the relay is in SET condition, its corresponding LED will turn ON, and on the contrary, it is OFF. PCI-7251 digital input channels are non-polarity, optically isolated, and may be set to use RC filter or not. The devices are suitable for collecting digital inputs in noisy environments. All the I/O functions of PCI-7251 are the same as those of the PCI-7250. The PCI-7251 has to be connected with PCI-7250 and the bus interface is controlled by the PCI-7250. Up to three PCI-7251 cards can be connected to one PCI-7250, therefore, expanding the PCI-7250's DIO from 8 DIO to maximum 32 DIO.
