64 channel digital output board featuring: 32 optically isolated digital output channels plus 32 high current drive, open collector, TTL output channels. It has front panel I/O, built in test features and a safety shutoff. The outputs are rated up to 55 Volts with 1 KV VMEbus isolation and 500 Volts channel to channel isolation. A VxWorks driver is available. Factory configuration of other combinations of TTL and Optically isolated channels is available.