NTi Audio XL2 Sound Level Meter - Manual (Page 137)

137
Calibration
5 Level Type
LZF Default setting.
LHP100F Suppressing any low frequency noise, for
example wind during outdoor calibrations.
6 Electronic Data Sheet of Measurement Microphone
Read out data from the connected microphone.
User Calibration - With External Precision Calibrator
User-sensitivity setting for measurement microphones with an
external calibrator.
Turn the rotary wheel • to select the parameter Calibration
Level 4 and press enter .
Set the calibration level according to the calibrator used. •
Generate the specific reference signal with the calibrator •
onto the microphone.
Turn the rotary wheel
• to select the parameter RUN next
to User Calibration 3 and press enter .
The pop-up window • Calibration: Calibration running ...
shows up and changes to Calibration: Successfully fin-
ished! for a successfully completed calibration.

The user calibration is completed.
User Calibration - Manual Sensitivity Setting
In case no external calibration device is available, set the sensi-
tivity of non-NTi Audio microphones manually according to the
product specifications as follows:
Select • Sensitivity 2 with the rotary wheel .
Press enter • and adjust the sensitivity with the rotary
wheel in 0.1 mV/Pa steps. The setting range 100 µV/Pa -
9.99 V/Pa is supported.
Confirm with enter
• .

The manual user calibration is completed.
User Sensitivity
The XL2 writes the user-sensitivity setting onto
the electronic data sheet of the connected NTi
Audio measurement microphone or microphone
preamplifier. All subsequent measurements au-
tomatically utilize this user-sensitivity.