Larson Davis 831 - Page 123

Larson Davis 831

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5-44 Any Level Display Model 831 Manual

Table of Contents

Default Chapter4
- Table of Contents4
- 831 Features10
Chapter 1 831 Features10
- Hardware Features10
- Basic Measurements11
- Basic Operation11
- Available Options12
- Standard Accessories13
- Optional Accessories14
Chapter 2 First Use20
- First Use20
- Unpacking and Inspection20
- Connecting the Microphone and Preamplifier21
- Connecting the Preamplifier22
- Disconnecting the Preamplifier23
- Powering the Model 83123
- External Power Supply27
- 831 Components32
Chapter 3 Overview32
- Summary of Displays and Icons38
- Basic Run Functions43
- Navigating and Selecting43
- Tab and Setting Displays44
Chapter 6 Run Control45
- Parameter Selection51
Chapter 4 Basic Measurement Setup56
- Settings Screen56
- Setup Tabs57
- Exiting Settings Screen70
- Setup Manager71
Chapter 5 Data Display80
- Data Labels80
- Tabbed Structure80
- Live Tab81
- Overall Tab91
- Overall Slm94
- C-A and Impulsivity102
- Session Log Tab104
- Adjust Graph Scale108
- View Spectrum Normalized109
- Any Level Display120
Run Control124
- Run Control Setup124
- Run Mode with Measurement History126
- Run Modes Without Measurement History127
Chapter 7 Making a Measurement136
- Configuration of the System136
- Making a Measurement136
- Switching on the Model 831136
- Calibrating the Model 831138
- Model 831 Setup138
- Positioning the Model 831138
- Performing the Measurement140
  - Measurement Range143
  - Stopping the Measurement149
- Storing the Measurement150
- Recovery after Improper Shutdown153
- Calibration Overview156
Chapter 8 Calibration156
- Control Panel - Calibrate157
- Acoustic Calibration160
- Calibration History167
- Sensitivity Tab168
- Calibration Without Preamplifier170
- Certification171
- E.A. Check173
- E.A. History175
Chapter 9 Industrial Hygiene176
- Measurement Setup176
- Data Display180
Chapter 10 Voice Recording184
- Control Panel - Voice Recording184
- Voice Recording184
- Voice Recorder185
Chapter 11 Time History188
- Metrics Logged188
- Time History188
- Time History Setup191
- Time History Display196
- Locate Record Number203
- Link to Measurement History Display204
- Markers205
Chapter 12 Measurement History210
- Measurement History210
- Run Control with Measurement History210
- Continuous and Timer Modes211
- Timed Stop Mode212
- Display of Measurement History Data214
- Manual and Stop When Stable Modes214
- Link to Time History220
- Storing a Measurement History220
Chapter 13 Event History222
- Event History222
- Level Based Events222
- Event History Setup223
- Trigger Method229
- Event Time History Setup231
- Event History Display242
- Link to Time History and Measurement History243
Chapter 14 FFT and Tonality246
- Configuring a Measurement248
- Viewing and Analyzing Results255
- Storing Data266
- Viewing Stored Data266
- Return to Sound Level Meter Mode267
- Accessing RT-60 Mode268
- Accessing FFT Mode246
Chapter 15 RT-60268
- Making a Measurement270
- Viewing and Analyzing Results275
- Manually Controlling the Internal Noise Source283
- Customizing Measurements287
- General Settings288
- Storing Data293
- Viewing Stored Data293
- Quality Indicators294
- Accuracy Grade295
- Return to Sound Level Meter Mode296
Chapter 16 Sound Recording298
- Sound Recording Types298
- Sound Recording Setup299
- Manual Sound Recording304
- Marker Initiated Recording306
- Event Sound Recording311
- Measurement History Sound Recording315
- Combined Sound Recordings316
- Sound Recording Playback317
Chapter 17 Data Explorer322
- Data Explorer323
Chapter 18 System Properties332
- Device333
- Time334
- Power336
- Preferences341
- Time Zone349
- Localization351
- Date Format352
- Displays354
- Options360
- Logic I/O362
Chapter 19 Non-Acoustical Inputs364
- Weather Measurement Using 831-INT365
- Location Measurement Using 831-INT373
- Control Panel - Data Explorer322
- Control Panel - System Properties332
- 831-Int364
Chapter 20 Communication376
- Control Panel - Communication376
- Modem Tab378
- Wireless Tab381
- RS-232 Tab383
- SMS out387
- Network Tab388
- Status Tab390
- Troubleshooting395
Chapter 21 Lock/Unlock the Model 831404
- Control Panel - Lock404
- Lock/Unlock the Model 831404
- Fully Locked408
- Locked with Auto-Store409
- Locked with Manual-Store410
- Calibration When the Model 831 Is Locked411
- About414
Chapter 22 About414
- Control Panel - about414
- Standards415
- Options416
- User417
Chapter 23 System Utilities418
- Control Panel - System Utilities418
- System Utilities418
- File System419
- Basic Sound Level Measurements422
Chapter 24 Parameters Measured422
- Parameters Measured422
- Sound Exposure Metrics Measured424
- Statistical Metrics Measured425
- Event History (831-ELA Required)427
- Exceedance Counters427
- Measurement History (831-ELA Required)427
- Miscellaneous Parameters427
- Time History (831-LOG Required)427
Chapter 25 Memory Utilization428
- Memory Utilization428
- Out of Memory Stop428
- Overall Data428
- Session Log428
- Events429
- Measurement History429
- Time History429
- Sound Recording430
- Voice Messages430
- Bad Flash Blocks431
Chapter 26 Upgrade Firmware and Options432
- Upgrading Model 831 Firmware433
- Upgrading Options436
Appendix A Technical Specifications438
- Standards Met by Model 831438
- Model 831 Specifications439
- CE Information457
- 1/1 and 1/3 Octave Filters458
- Position of Instrument and Operator467
- Frequency Response469
- Specifications494
- Vibration Sensitivity499
- Sections 5, 6, 7 and 9 (Except 9.3508
Appendix B Measuring to IEC61672-1514
Appendix C Integrated Level Calculations514
- Basic Integrated Level Calculations514
- Community Noise Descriptors522
Appendix D Glossary526

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