User manual

83
Reverberation Time RT60
Start the Measurement
Press start • . The status indication switches to ARMED.
Enable the test signal; e.g., switch on the interrupted pink •
noise signal or fire a starter pistol.
The black bars have to exceed the grey bars completely.•
Continue the Measurement
Using pink noise:
The interrupted pink noise test signal continues with the pre-
set on/off time. The XL2 automatically triggers at each cycle.
Complete a minimum of three test cycles to accurately calcu-
late the uncertainty factor. Perform more cycles to increase the
measurement accuracy (= smaller uncertainty factor).
Using an impulse source:
A single impulse at one measurement location is sufficient. No
further measurements are required to increase the statistical
measurement accuracy.
Confirmation marks indicating success-
ful measurements, are displayed above each
band.