PDP1134A Power System Description

This document outlines the power system for the PDP1134A, focusing on the installation and configuration of the H775 Battery Backup Unit (BBU) and the H7441 and H785 voltage regulators. It details the power distribution architecture, including the differences from the PDP11/34 power system, the use of the 5410864-YA power distribution board, and instructions for configuring backplane jumpers to manage MOS memory refresh voltages and battery backup integration. The guide includes schematics for interconnections, regulator placement, and maintenance caution guidelines.