NTi Audio XL2 Sound Level Meter - Manual (Page 150)

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Capture + Tolerances
Passed Result

The tolerance mode is active for passed/failed measure-
ments.
The passed/failed condition is further visualized by the bicolor
“limit” button and forwarded to the I/O interface of the instru-
ment in order to drive an external alarm device such the acces-
sory SPL Stack Light.
2 3
1
1 PASSED / Failed Result
PASSED The actual measurement result is within the
tolerance band.
The actual measurement result is outside of
the tolerance band. Exceptions are visual-
ized in any out-of-tolerance frequency band.
2 Tolerance Bandwidth
Adjusts the tolerance bandwidth based on the captured ref-
erence spectrum in dB.
3 Level Offset
Provides a level offset in dB to move the tolerance band
up/down.