CLIOwin 7 PCI User's Manual - Audiomatica

16.3 Leq SETTINGS
Time resolution
Selects the time resolution of the measurement. It is possible to choose a value
among 1s, 1/2s, 1/4s, 1/10s, 1/100s and 1/1000s. Normally choose the least
resolution possible as this choice directly reflects on the measured data size (.leq
binary files). This setting is not influencing the sampling frequency that remains
48000Hz.
Frequency weighting
Selects the frequency weighting applied; you can choose either No Weight or A-
Weighting.
Peak mode
Selects how the peak is measured. You may select between the two:
- Max. The peak is the maximum value acquired given the particular time resolution
and frequency weighting.
- LUser.The peak is the maximum value of the LUser measurement.
Capture time data to disk
If active, during the measurement the acquired time data is saved to the hard disk.
It is then possible to create a standard wave file of the event measured for later post
processing. Be extremely careful when activating this feature as it requires a huge
amount of disk space: circa 6MB/min or 0.35GB/hour.
Maximum recordable time is 12 hours.
LUser integration
Selects the time integration of the user definable level measurement. You may
choose among the following:
- No. No integration is applied; the result is that the classical time history is displayed.
- Impulse. Classical Impulse integration, 35ms time constant with 2.9dB/s decay
rate.
- 35ms. Modified impulse integration; only 35ms time constant.
188 Chapter 16 - Leq Level Analysis