User manual

98
1/12 Octave + Tolerance
Start tolerance
mode
Starts the tolerance mode for passed/
failed measurements comparing the
actual measurement results against a
tolerance band.
2
Measurement Result
Actual level result of the indicated frequency band. The cur-
sor readout displays the center frequency and the level of
the band indicated by the arrow.
Upper parameter displayed as line.
Lower parameter displayed as bargraph.
3
Y-Scale setting
Select the Y-Axis with the rotary wheel •
and confirm
with enter
.
Select the zoom factor between • 20, 10, 5, 2.5 dB/div
and confirm with enter
.
Scroll up and down with the rotary wheel • to select the
Y-axis range.
Confirm with enter •
.
4
Spectral Measurement Result
Spectral results in 1/1, 1/3, 1/6 or 1/12 octave band resolu-
tion. Adjust the resolution at
12
.
5
Input Range
The XL2 Analyzer provides three input ranges to accom-
modate the wide range of input signals. The individual rang-
es are based on the microphone sensitivity setting in the
calibration menu of the XL2. For example at a sensitivity
S=20mV/Pa the input ranges are
Lower range: 10 - 110 dBSPL•
Middle range: 30 - 130 dBSPL•
Upper range: 50 - 150 dBSPL•
Select the lowest possible input range according to the
maximum level expected during the measurement; e.g., if
the sound pressure will be always below 110 dBSPL, then
select the lowest input range 10 - 110 dBSPL.
6
Time Weighting
Offers selectable time weighting of 0.1, 0.2, 0.5, 1.0 second
as well FAST (125 ms) and SLOW (1 second). Applications:
Short Time
Weighting
High resolution in time with minimum
a
veraging
Long Time
Weighting
Low resolution in time with longer aver-
aging