This SAE Standard describes a method for determining the noise emitted by earthmoving machinery at the operator's position in terms of the equivalent continuous A-weighted sound pressure level while the machine is in a stationary test condition.
SAE J2103-1991 history
2003SAE J2103-2003 AcousticsMeasurement of Airborne Noise Emitted by Earthmoving MachineryOperator's PositionStationary Testing Condition
1991SAE J2103-1991 ACOUSTICS—MEASUREMENT OF AIRBORNE NOISE EMITTED BY EARTHMOVING MACHINERY—OPERATOR'S POSITION—STATIONARY TESTING CONDITION