262K 18 Bit DEC Disk

This document is a master drawing list and supporting documentation for the 262K 18-bit DEC disk system (RS09). It includes a comprehensive list of mechanical and electrical drawings, including chassis assemblies, wiring lists, module utilization, and track select matrices. The document also provides a calibration procedure for the RS09 system, detailing the steps for gain and slice measurements, timing track calibration, and data track gain and slice calibration.