NTi Audio XL2 Sound Level Meter - Manual (Page 136)

136
Calibration
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1 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.
2 Factory Sensitivity
Factory sensitivity of measurement microphone in
mV/Pa. The sensor detection of the XL2 reads the sensi-
tivity automatically from the electronic datasheet of the
connected NTi Audio measurement microphone or micro-
phone pre-amplifier.
3 User Calibration
Sensitivity setting with an external calibrator.
4 Level of External Calibrator
The reference calibration level is 114 dB. The XL2 Supports
a level setting between 0 dB and 200 dB.