Larson Davis 824 - Page 15

824 Reference Manual
iii-xi
Then Settings Menu .......................................................................................11-14
Trigger Settings Menu (continued)................................................................11-14
RT60 Reverberation Time Settings................................................................11-16
RT60-A and RT60-B Instrument Definition..................................................11-17
Qualifying Background Noise: Rooms [RTA] ID .........................................11-18
Display Views.....................................................................................................11-19
RTA Views ....................................................................................................11-19
Trigger Views ................................................................................................11-23
Autostore Views.............................................................................................11-25
Autostore ByTime Spectral History...............................................................11-29
ByTime Spectrum Check Menu.....................................................................11-30
ByTime Graph Check Menu..........................................................................11-31
RT-60 .............................................................................................................11-33
RT60 Check Menu.........................................................................................11-35
Spatial Avg Views .........................................................................................11-35
Spatial Avg Check Menu ...............................................................................11-37
Avg History Check Menu ..............................................................................11-38
Rooms Views .................................................................................................11-39
Chapter 12 FFT (Optional) 12-1
Features.................................................................................................................12-1
Settings Menu .......................................................................................................12-1
Settings Descriptions ............................................................................................12-3
FFT Display ..........................................................................................................12-6
FFT...................................................................................................................12-6
FFT Check Menu .............................................................................................12-8
THD (Total Harmonic Distortion)........................................................................12-9
THD Check Menu..........................................................................................12-10
Snapshot..............................................................................................................12-11
Snapshot Check Menu ...................................................................................12-12
FFT Calibration...................................................................................................12-13
Calibrating dB to a Different Reference ........................................................12-13
Displaying Amplitude in Linear Units...........................................................12-14
Setup of Linear Units Readout..................................................................12-15
Frequently Asked Questions Concerning FFT...............................................12-17
Chapter 13 AUD (Optional) 13-1
Connecting the Test System .................................................................................13-2
Selecting the 824-AUD Operation Mode .............................................................13-3