First line: LSI-11 LSI-11/2 LSI-11/23 Compatible Analog Subsystems MODELS RTI-1250,1251,1252 Complete Analog Subsystems Digital Equip. Corp. 16-Bit LSI-11/2 11/23 Compatibility Memory Mapped Interface 12-Bit Resolution Accuracy Single Power RequirementAbstract: .. Output Channels Four Quadrant Multiplying DAC's On-Board Reference RTI-1252 Analog Output Subsystem 2- or 4-, 12-Bit 12-Bit Analog Output Channels Field Expandable from 2 to 4 DAG Outputs 4 High Current .. Tags: datasheet abstract..