NTi Audio XL2 Sound Level Meter - Manual (Page 68)

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FFT Analysis + Tolerance
10 Readout Frequency
You may select any frequency to read out individual levels.
The selected frequency is indicated by the cursor arrow.
Choose between the following settings:
The cursor follows automatically the highest level,
e.g. tracing feedback frequencies at live sound.
Select the frequency with the rotary wheel • .
Press enter • .
You may readout any individual frequency. •
Return to auto frequency with enter • .

The cursor returns to the frequency with high-
est level bar.
The cursor read out may be set manually to any fre-
quency. The read out remains at the selected fre-
quency.
Select the frequency with the rotary wheel • .
Press enter • .
Select the frequency of interest. •
Confirm with enter • .

The cursor readout 2 displays the measure-
ment results of the selected frequency band.
11 Zoom Mode
(optional, applicable with the Extended Acoustic Pack or
the Spectral Limits Option)
Select the readout frequency • 10 and press enter .
The zoom mode is displayed above the flashing arrow. •
Select the zoom-in frequency with the rotary wheel • .
Press limit • and zoom the linear frequency scale in or
out with the rotary wheel .
Release limit
• and scroll the linear frequency scale left
or right with the rotary wheel .
12 Phantom Power Supply
48V The XL2 provides 48 V phantom power supply
to the connection microphone or sensor.
ASD An NTi Audio measurement microphone with
automated sensor detection ASD is connect-
ed. The XL2 reads the electronic data sheet of
the microphone and switches the 48V phan-
tom power automatically on
48V Phantom power is switched off.