This standard is based on JIS Z 8733, Method for Measuring Sound Power Level in a General Sound Field, and specifies a method for measuring the noise level of a hydraulic motor when installed in a specified manner and under normal operating conditions.
JIS B 8350-2:2003 history
2003JIS B 8350-1:2003 Hydraulic fluid power -- Test code for determination of airborne noise levels -- Part 1: Pumps
1989JIS B 8350:1989 Methods of noise level measurement for oil hydraulic pumps and motors