CF-5200 Frequently Asked Questions

As the cause of the occurrence of differences.

(1) Sound level meter side
Changing the measurement level range during CAL and measurement will result in a dB difference. (This information does not enter the sound level meter side)

(2) When the frequency range is below 20 kHz, sound components above this frequency range are cut off, resulting in a difference due to this cutoff.

(3) Differences arise due to the different time constants of the sound level meter (FAST, SLOW) and CF.

The time constant of CF corresponds to the measurement time for a data length of 2048 points.

Chapter of the relevant instruction manual

3.5 Anti-aliasing filter
3.6 Setting the length of analysis data and resolution