Larson Davis System 824, Training Manual

Page: 5 / 66

824 Training Manual
v
CNEL .......................................... ........................................2-19
Background Leq ...............................................................2-19
Excd Leq ...................................... ......................................2-19
Chapter 3 RT60 Measurements
What is an RT60 and how is it measured?..............................................................3-1
RT60 Defined ................................................................................................3-1
How does my 824 measure an RT60?...........................................................3-2
Taking an RT60 Measurement...........................................................................3-3
Exciting the Room.........................................................................................3-3
Setting up the 824 for an RT60 measurement...............................................3-3
RT60-A and RT60-B Setups....................... ...................... 3-3
Advanced RT60 Measurements .........................................................................3-7
Triggering......................................................................................................3-7
Customizing the Trigger Menu .....................................................................3-9
Averaging............................................................................ 3-9
End Time .......................................
.....................................3-10
Trigger and Arm Levels ......................... ..........................3-10
Autostore Display .............................. ..............................3-10