sound level meter Frequently Asked Questions

Question number FAQ-1236

What are the differences between AC and AC/DC outputs in the LA-7000 series?

AC：	The output will be a frequency-weighted signal. Due to digital processing such as frequency-weighted filtering (AD conversion - processing - DA conversion), there is a delay of about 4.6 ms compared to the actual sound.

AC/DC：
AC-Z	A signal processed by a Z-characteristic filter will be output regardless of the set frequency weighting characteristics.
DC	The output voltage corresponds to the magnitude of the sound pressure level (dB value).
Through	This is a signal that has not undergone frequency weighting filter processing. Since it has not been filtered, there is no delay.

Last updated: 2018-05-17