I831.01 Rev O Manual
Chapter 21 Lock/Unlock the Model 831 21-1
Control Panel - Lock ........................................................................................... 21-1
Fully Locked ....................................................................................................... 21-5
Locked With Auto-Store ..................................................................................... 21-6
Locked With Manual-Store ................................................................................. 21-7
Calibration When The Model 831 Is Locked ...................................................... 21-8
Chapter 22 About 22-1
Control Panel - About ......................................................................................... 22-1
About ................................................................................................................... 22-1
Standards ............................................................................................................. 22-2
Options ................................................................................................................ 22-3
User ..................................................................................................................... 22-4
Chapter 23 System Utilities 23-1
Control Panel - System Utilities .......................................................................... 23-1
File System .......................................................................................................... 23-2
Chapter 24 Parameters Measured 24-1
Basic Sound Level Measurements ...................................................................... 24-1
Sound Exposure Metrics Measured .................................................................... 24-3
Statistical Metrics Measured ............................................................................... 24-4
Exceedance Counters .......................................................................................... 24-6
Miscellaneous Parameters ................................................................................... 24-6
Time History (831-LOG Required) .................................................................... 24-6
Measurement History (831-ELA Required) ....................................................... 24-6
Event History (831-ELA Required) .................................................................... 24-6
Chapter 25 Memory Utilization 25-1
Out Of Memory Stop .......................................................................................... 25-1
Overall Data ........................................................................................................ 25-1
Session Log ......................................................................................................... 25-1
Measurement History .......................................................................................... 25-2
Time History ....................................................................................................... 25-2
Events .................................................................................................................. 25-2
Voice Messages ................................................................................................... 25-3
Sound Recording ................................................................................................. 25-3
Bad Flash Blocks ................................................................................................ 25-4
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