User manual

157
Calibration
5
Start Field Calibration
Select RUN and press enter to start the sensitivity setting
using an external calibrator.
6
Level of External Calibrator
The reference calibration level is 114 dB. The XL2 Supports
a level setting between 0 dB and 200 dB.
7
Sensitivity
Applicable microphone sensitivity in the range from
1 µV/Pa to 9.99 V/Pa. The sensor detection of the XL2 reads
the sensitivity automatically from the electronic datasheet
of the connected NTi Audio microphone or preamplifier.
8
Spectral Correction
Select one of the spectral corrections as applicable.
Off No spectral correction.
Com-
munity
(hori-
zontal)
Activates the spectral correction for horizontal
noise incidents using the outdoor measure-
ment microphone M2230-WP. The correction
data is listed in chapter Technical Data.
Aircraft
(verti-
cal)
No spectral correction. The M2230-WP com-
plies with the class 1 specifications at vertical
noise incidents.
M22xx
DF
Diffuse field correction for the measurement
microphone types M2230, M2215, M2211.
M42xx
DF
Diffuse field correction for M2230 measure-
ment microphone M4261.
9
Selection Sound Level Meter / Vibration Meter
Sound Sound Le
vel Meter
Vibration Vibration Meter