The VMIVME-1128 Digital Input Board is designed to read a voltage from a variety of devices. The signals may originate from electronic switching circuits, standard logic circuits, mechanical switch contacts, relay contacts, Opto 22 type signal conditioning modules, or numerous other sources. The inputs can be configured to receive current sinking or voltage sourcing signals.

The VMIVME-1128 Board has input circuitry that permits the user to select and configure the basic input functions. The input functions and threshold levels are built into the circuitry. The configuration of the board by the user sets up these functions. This allows the user to set some of the inputs for one function and the rest to another.

The basic function of this board is to sample the external inputs (when the board is accessed by the host) and place this data on the appropriate data lines of the VMEbus. In other words, this board takes a snapshot of the external data and guides it to the host via the VMEbus.

This board supports built-in-testing of its active components. Test registers are mapped into the same addresses as the input registers they are to test. In this way the host simply writes data to an address then reads the same address and compares the data read with the data sent to determine the health of the board. Testing can be done with the board off-line or on-line. A Control and Status Register (CSR) is used to control the operating state of the board.

Product Family: VMIVME-1128, VMIVME1128, VMIVME 1128, VMIVME-9300, VMIVME9300, VMIVME 9300

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