-64 optically coupled digital inputs

-5 V to 48 VDC input range

-High isolation, 1.000 V continuous, 7.500 V pulse voltage

-Filter input options

-Dual I/O connectors

-Contact closure sensing

-Voltage or current source input options

-Positive or negative true input options

-Dual Eurocard form factor with front panel

8-bit or 16-bit data transfer

-Unprivileged or supervisory I/O access

-Highly reliable DIN-compatible input connectors

Functional Features

Board Features:

This 64-bit optically coupled digital input board is designed and optimized for the VME bus.

The VMIVME-1150 is highly isolated and provides a flexible, low cost, high noise immunity 8-byte digital input port. The functional block diagram is shown below.

Compatibility:

The VMIVME-1150 is a standard double height printed circuit board that is electrically and mechanically compatible with the VME bus.

Input Organization:

Eight input ports, each eight bits wide. The ports are organized as eight consecutive 8-bit read-only registers.

Addressing Scheme:

Each 8-bit port is individually addressable anywhere within an 8-bit or 16-bit boundary.

Short-circuit monitoring or short-circuiting anywhere within unprivileged I/O space.

Board Address:

The board address is selected by the on-board DIP switches. Runs in any available slot on the VMEbus backplane except slot 1.

VMEbus Access:

The address modifier bits are decoded to support short supervised or unprivileged short I/O access. A jumper is provided to support this option. The board is factory configured for short supervised I/O access.

VME Bus Reply:

The DTACK reply is a response to a data select (DS0 or DS1) and the decoded board address.