sound level meter Frequently Asked Questions
Question number FAQ-1176
Setting of motion characteristics
Setting of dynamic characteristics.
The dynamic characteristics of the LA-1240/1250/1350 models include two types: FAST and SLOW, while the LA-4350 has three types: FAST, SLOW, and IMP. Depending on the measurement purpose, the dynamic characteristics can be switched using the panel switch [FAST/SLOW] (LA-4350: [FAST/SLOW/IMP]).
Dynamic characteristics by application
Please switch the dynamic characteristics according to the application or purpose, referring to the following table.
| FAST | - Corresponds to general noise measurement. |
|---|---|
| SLOW | • Supports level measurement with minimal temporal variation • Simple measurement of average levels of fluctuating noise |
| IMP | Measurement of sudden impact sounds, etc. |
Switching of dynamic characteristics
For LA-1240/1250/1350, the dynamic characteristics switch in the following order each time the panel switch [FAST/SLOW] is pressed.
FAST→SLOW→FAST→SLOW→･･･
The LA-4350 switches its dynamic characteristics in the following order each time the panel switch [FAST/SLOW] is pressed.
FAST→SLOW→IMP→FAST→SLOW→IMP→FAST･･･
Last updated: 2002-01-09