This is used in a MI 5010 programmable multifunction interface.
The 50M20 Converts digital data to ground isolated analog voltage or current selectable via an on-board switch. The floating output pair can set voltage or current bias points or simulate switch thresholds in precision analog circuits. TTL compatible lines at the front panel connector are provided to control conversion timing with an external system.
250 V AMS Isolation
±10 V Voltage Mode
±20 mA Current Mode
Data Transfer via GPIB or Front-Panel Connector