人类工程设计方法文件操作员（HEDAD-O）描述了与操作员接口的设备。本文件提供了一个数据源，用于评估与操作员有接口的设备在多大程度上满足人因要求和人体工程学标准，并提供了设计的人体工程学原理。

The Human Engineering Design Approach Document-Operator (HEDAD-O) describes equipment that interfaces with operators. This document provides a source of data to evaluate the extent to which equipment having an interface with operators meets human performance requirements and human engineering criteria, and provides the human engineering rationale for the design.