1/12 octave + tolerance – NTi Audio XL2 Sound Level Meter User Manual
Page 101

101
1/12 Octave + Tolerance
13
Phantom Power Supply
48V
The XL2 provides 48 V phantom power supply
to the 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.
14
Measurement Unit
Select the measurement unit as follows:
dB
Sound level in dBSPL
This measurement unit is permanently selected
upon connecting a NTi Audio measurement mi-
crophone with electronic data sheet.
dBu
Input level in dBu
dBV
Input level in dBV
V
Input level in Volt
Band Listening
The selected frequency band of the input sig-
nal is audible at the rear speaker or headphone
output.
Press and hold the speaker button
•
down.
The pop-up window Volume is displayed.
Keep the speaker button
•
pressed and
press enter at the same time.
The band listening is activated.