User manual

125
STIPA
STI Measurement - Getting Started
Test Preparations
The XL2 reads the electronic data sheet of the connected
NTi Audio measurement microphone and switches the 48V
phantom power automatically on as follows:
Connect the measurement microphone to the XL2.•
Switch on the XL2 •
.
 The 48V phantom power indication in the upper menu bar
changes to ASD. The XL2 is ready for acoustic measure-
ments.
Position the XL2 at the measurement location using a micro-•
phone stand or tripod.
Select the • STIPA measurement function in the measure-
ment menu.
Prepare the environment for the measurement. For example •
mute all sound sources to establish silence.
No impulsive noise shall occur during the
speech intelligibility measurement as well no
speaking or other noise sources should be al-
lowed near the measurement microphone.
Start STIPA Test Signal
Select the STIPA signal source according your application re-
quirements.
Switch on the STIPA test signal at the signal source.•
Set the acoustic sound pressure level of the PA system to •
simulate the typical announcement level; e.g. L
AS
= 85 dB.