sound level meter Frequently Asked Questions

Both Meas Time and Total Time have a maximum setting of 199 hours, 59 minutes, and 59 seconds, while Meas Time has a minimum setting of 0.1 seconds and Total Time has a minimum setting of 1 second.

The memory mode has a function that automatically saves measurement data repeatedly. For example, when measuring LAeq, you can set the MeasTime (measurement time) to 10 minutes and the TotalTime (total measurement time) to 24 hours. When executing data saving with these settings, the LAeq calculation result data measured over 10 minutes will be repeatedly saved in memory for 24 hours.

144 data will be saved as one file.

In the case where the memory mode is set to "1TWAuto", 1 data is recorded as L _p /L _eq /L _E /L _MX /L _MN /L _pk, and the data byte size is 86 bytes. The data byte size for 1 file is 144×86 = 12384 bytes, but an additional 367 bytes is added for management, resulting in a total of 12751 bytes (approximately 13k bytes).

If saving data at 1-second intervals for 199 hours, 59 minutes, and 59 seconds (719,999 seconds), it will amount to 71,999 × 86 + 367 = 61,920,281 bytes (approximately 60 MB).

If the Total Time is set to 0, the measurement will be conducted once, and after saving the file, the measurement will stop. The same applies when using the real-time analysis functions of LA-0551 and LA-0552. For information regarding the sound recording function of LA-0554, please refer to a different FAQ.