| <JIS Z 8731 "Description and measurement of 
				environmental noise" >Please refer to also ISO 1996
         
				  
					This example shows how to measure the 
						time-average sound level (equivalent continuous sound 
						level, Leq) which is generated from machine 
						during operation.
					Measure the sound level at several points 
						which are expected to be high level and around the 
						position of operator’s ears. The measurement position 
						must be at 1m away from the machinery and 1.2 m to 1.5 m 
						above on the floor surface.
				The LA-1411 Class2 integrating sound level 
					meter can store the data of sound level at each point in 
					internal memory and recall them. Also, the stored 
					measurement data can be transferred to the PC via USB or 
					RS-232C interface. |