本SAE标准规定了在指定越野自行式工作机器的操作员站测量声级和确定时间加权声级时使用的程序。本文件适用于以下具有SAE J1116中规定的操作员站的工作机器:？履带式装载机？平地机？集材机？轮式装载机？带推土机的履带式拖拉机？铺管机？自卸车？带推土机的轮式拖拉机？挖沟机？拖拉机铲运机？反铲机？清扫机？压路机/压实机？液压挖掘机带推土机、挖掘机和轮式伐木机的脚踏式压实机描述了这些机器的仪表要求和具体工作周期。用于计算操作员站时间加权平均声级的方法规定为Leq（5）或可选汇率，在代表连续中等至繁重工作的工作循环中连续运行。 工作循环提供了一种可重复、可复制的方法，可以根据码杆均匀地测量工作机器。还提供了一种方法，将操作员站的时间加权平均声级与部分负载工作、监督和休息时间联系起来，以估计操作员的声音暴露。

This SAE Standard sets forth the procedures to be used in measuring sound levels and determining the time weighted sound level at the operator's station(s) of specified off-road self-propelled work machines. This document applies to the following work machines which have operator stations as specified in SAE J1116:¿¿¿ Crawler Loader¿¿¿ Grader¿¿¿ Log Skidder¿¿¿ Wheel Loader¿¿¿ Crawler Tractor with Dozer¿¿¿ Pipelayer¿¿¿ Dumper¿¿¿ Wheel Tractor with Dozer¿¿¿ Trencher¿¿¿ Tractor Scraper¿¿¿ Backhoe¿¿¿ Sweeper¿¿¿ Roller/Compactor¿¿¿ Hydraulic Excavator¿¿¿ Pad Foot Wheel Compactor with Dozer¿¿¿ Excavator and Wheel Feller-BuncherThe instrumentation requirements and specific work cycles for these machines are described. The method used to calculate the time weighted average sound level at the operator station(s) is specified for Leq(5), or optional exchange rates, during continuous operation in a work cycle representing continuous medium to heavy work. The work cycles provide a repeatable reproduceable means to uniformly measure working machines against a ¿¿¿yard stick. A method to relate the time weighted average sound level at the operator station(s) to estimate operator sound exposure with part load work, supervision, and rest breaks is also provided.