User manual

124
STIPA
20
Source of Data
Informs about the source of the ambient noise data. The
choices are:
Default Settings•
Edited manually•
Measured• Date Time
This information is documented in the measurement re-
port.
21
LAeq of Ambient Noise
This LAeq is calculated based on the octave band levels;
you may manually set this level in accordance with the typi-
cal noise level as specified for your application.
22
Spectral Level of Ambient Noise
Adjustable octave band level from 125 Hz to 8 kHz.
23
Activation of manual Octave Band Level Setting
Select EDIT with the rotary wheel
to adjust the indi-
vidual octave band levels.
24
Activation of Ambient Noise Correction
On Ambient noise correction is activ
e
Off Ambient noise correction is deactivated
Question Mark ? at individual Octave Bands
Individual octave bands are marked with ? in case of a
Missing test signal level•
Invalid modulation indices (mr1 or mr2 > 1.3) •
Changes in ambient noise or any impulsive noise during •
the measurement
Flashing Question Marks ?.?? at
2
The measurement result flashes in combination with the
question marks ??? in case of a
Question Mark • ? at one or multiple octave bands. See
the STIPA Table Result Page on the XL2 for details.
Changes in ambient noise or any impulsive noise during •
the measurement
In case the question marks ?.?? are flashing,
then the measurement is faulty. Verify possible
causes and repeat the measurement.
For details see the chapter STI Measurement
Hints.