Indicated if one or several bands are excluded. This will violate the A-weighted result of the measurement unless the band is more than 10 dB below the highest A-weighted band. Please consult the standard.
Band Excluded Band ExcludedIndicated if one or several bands are excluded. This will violate the A-weighted result of the measurement unless the band is more than 10 dB below the highest A-weighted band. Please consult the standard.
Dynamic Capability too lowThis warning is issued if a band has a measured F2 > Ld.
This may be avoided by proper calibration, and avoiding measuring a highly reactive sound field. Try to move away from the source or eliminate extranous noise sources to avoid the warning.
Dynamic Capability too lowThis warning is issued if a band has a measured F2 > Ld.
This may be avoided by proper calibration, and avoiding measuring a highly reactive sound field. Try to move away from the source or eliminate extranous noise sources to avoid the warning.
The yellow warning is issued for a segment. The measurement is still compliant to the standard if the summed bands in total scope fullfills the requirement. Otherwise, a red warning will be issued.
Too short averaging timeIf the measurement duration is not satisfying BT ≥ 400, this warning will be issued.
B is the bandwidth of the lowest frequency band in calculated range.
T is the measurement duration.
Field not stationaryThe temporal variability indicator F1 is > 0.6 for a band. Take actions according to Action E
Extraneous intensityThe extranous intensity criterion is that F3 - F2 < 3 dB for one or more bands.
Try to shield the device under test for directive extraneous noise sources.
Negative intensityOne or more bands have negative direction intensity/sound power.
Try to shield the device under test from extraneous noise sources.
Inadequate number of positionsToo few measurement positions for the sound field. Criterion 2, N > CF42, is not satisfied. Please see the suggested action code.
Weighted sum rangeThe Weighted Sum Frequency range is not set to 50 Hz to 6.3 kHz.
Frequency range not complientThe filter bandwidth is not set to minimum the range 31.5 Hz to 10 kHz.
High level outside A-totalIndicates that a frequency band outside the Weighted Sum Frequency Range is less than 6 dB below the total A-weighted value when A-weighted.
The standard states that the uncertainty may not be guaranteed in this case.
Low mid-range powerIndicates that the A-weighted power from bands [50 Hz to 315 Hz] + 6.3 kHz is larger than the A-weighted power for bands 400 Hz to 5 kHz.
The uncertainty for total A is then invalid, and individual band uncertainties apply.
Probe calibration out of dateIndicates that the sound intensity probe has not been phase corrected within the last 24 hours.