Larson Davis System 824 Manuals

Manuals and User Guides for Larson Davis System 824. We have 4 Larson Davis System 824 manuals available for free PDF download: Technical Reference Manual, Reference Manual, Training Manual

Larson Davis System 824 Technical Reference Manual (673 pages)

Precision Sound Level Meter & Real Time Analyzer

Brand: Larson Davis | Category: Measuring Instruments | Size: 7 MB

Table of Contents
5
Chapter 1 Introduction

21
- About this Manual
  21
  - Special Features of the Electronic Version
    23
  - Bookmarks
    23
    
    Opening Bookmarks
    23
    
    Closing Bookmarks
    24
    
    Expanding Bookmarks
    24
    
    Click to Display Page
    25
    
    Return to Previous View
    25
  - Links
    25
- About this Chapter
  26
- Formatting
  26
- Features
  27
  - Hardware Features
    27
  - System 824 Components
    30
  - System Diagram
    33
- Getting Started
  34
Chapter 2 Overview

41
Chapter 3 Front Panel Keys; Functions and Menus

59
- Power Key
  61
- Run/Stop Key
  66
- R Reset Key
  67
- Pause Key
  68
  - Pause
    68
  - Pause, Back Erase
    68
  - Preview
    69
- Lrud Arrow Keys
  69
- Check Key
  70
- View Key
  70
- D Data Key
  71
- S Setup Key
  72
  - Save ID
    74
  - Title
    74
  - ID Name
    74
  - Write Protect, Delete, Write Enable Ids
    75
- Ttools Key
  76
  - About
    78
  - Calibration
    80
  - Clock/Timer
    81
  - Memory
    85
  - Deleting Stored Data
    87
    
    Delete Last Function
    87
    
    824 Memory Structure
    87
    
    Deleting the Last Stored Record
    88
    
    Deleting Individual Records
    89
  - Power Monitor
    91
  - Communication
    92
- P Print Key
  95
Chapter 4 Quick Start

97
- Turning on and Calibrating the System 824
  97
  - High Range Calibration
    100
- Taking Measurements and Storing Data
  101
  - SLM&RTA Measurements
    101
  - Viewing RTA Displays During a Measurement
    104
- Recalling Stored Data
  107
- Selecting and Modifying Instrument Definitions (Ids)
  108
  - The Setup Menu
    109
  - The Active ID
    109
  - Menu Scrolling
    111
  - Permanent Ids
    111
  - Write-Protected Ids
    112
  - Preparing for a Measurement
    112
  - Selecting a Different ID
    113
  - Accessing the Settings Menu
    113
  - Accessing the Settings Menu to Initiate Editing or Modification
    114
  - Setting Control in the SLM View
    118
Chapter 5 System 824 Views

121
- Status Icons and Indicators
  122
- General Views
  124
  - SLM Views
    125
  - Any Data View
    128
    
    Any Level Format
    128
    
    Any Impulse Format
    128
    
    Any Time Format
    129
- SSA Specific Views
  129
  - SSA Displays
    131
    
    SSA Displays Including 1/1 or 1/3 Octave Spectral Data
    131
    
    Tabular SSA Views
    132
    
    Time History Displays
    133
    
    SSA Intervals
    133
    
    SSA Time History
    136
    
    Run Log
    139
    
    Ln Centiles
    139
- Logging SLM Specific Views
  143
  - Current SLM and Overall SLM Views
    145
    
    Current Slm/Overall SLM Display-A (SPL)
    146
    
    Current/Overall SLM Display-B (Times)
    148
    
    Current/Overall SLM Display-C (Min/Max)
    149
    
    Current/Overall SLM Display-D (Peaks)
    149
    
    Current/Overall SLM Display-E (TWA)
    150
  - Exposure Views
    151
    
    Exposure Display-A
    152
    
    Exposure-B Display
    153
    
    Exposure-C Display
    154
  - Ln Centiles Views
    155
    
    Ln-A Display
    155
    
    Ln-B Display
    156
  - Stats Views
    157
    
    Stats-A Display
    158
    
    Stats-B Display
    158
    
    Stats-C Display
    159
  - Run Log (LOG & SSA)
    160
  - Time History
    162
    
    Single Other Level
    163
    
    Multiple Other Levels
    163
  - Intervals
    164
    
    Intervals-A Display
    164
    
    Intervals-B Display
    166
    
    Intervals-C Display
    167
    
    Intervals-D Display
    168
    
    Intervals-E Display
    169
    
    Intervals-F Display
    170
  - Exceedance History
    172
    
    Excd-A Display
    172
    
    Excd-B Display
    173
    
    Excd-C Display
    174
    
    Excd Time History Display
    175
  - Daily Views
    178
    
    Daily-A Display
    178
    
    Daily-B Display
    180
    
    Daily-C Wind Display
    181
    
    Daily-D Windy Percent Display
    182
    
    Hourly Leq Display
    183
  - Metrics
    185
    
    Metrics-A Display
    185
    
    Metrics-B Display
    186
  - Passby
    187
  - Wind/Tach
    189
    
    Wind-A Display
    189
    
    Wind-B Display
    190
    
    Wind-C Percent Display
    191
Chapter 6 System 824 Virtual Instruments

195
- Selecting an Instrument ID
  197
- Sound Spectrum Analyzer (SSA)
  197
  - SSA Measuring Ranges
    198
  - LN Percentiles (Spectral)
    199
  - AC/DC Output
    199
- Logging SLM
  201
  - Time History
    201
  - Interval History
    201
  - Exceedances
    202
  - LN Percentiles (Broadband)
    202
  - Sound Exposure
    203
  - LOG and ISM Measuring Ranges
    203
Chapter 7 Using ID Setting Files

205
- Recalling ID Setting Files
  205
- Customizing Settings
  206
  - Settings Example - SLM&RTA (SSA)
    206
- Settings Descriptions
  208
- Common SLM Settings
  209
  - Title Setting - (SSA, LOG, ISM)
    209
  - Detector Setting - (SSA, LOG, ISM)
    209
  - Weighting Setting - (SSA, LOG, ISM)
    210
  - Gain Setting - (SSA)
    210
  - Range Setting - (LOG, ISM)
    211
  - Transducer Setting - (SSA, LOG, ISM)
    212
  - Random Incidence Microphone Correction - (Available to All Instrument Types)
    212
  - Pk Weighting - (SSA, LOG, ISM)
    213
  - RTA Detector Setting - (SSA)
    213
  - RTA Weighting - (SSA)
    214
  - Bandwidth Setting - (SSA)
    214
- Common Control Settings
  214
  - Control Settings - (ISM)
    214
  - Control Settings
    215
  - AC/DC Output Settings - (SSA, LOG, ISM)
    216
  - Logic Input Setting - (SSA, LOG, ISM)
    216
  - Logic Output Setting - (SSA, LOG, ISM)
    217
  - Logic Output Time Setting - (SSA, LOG, ISM)
    219
  - Logic Output #2
    220
  - Logic Output #2 Time Setting
    220
  - Heater on
    220
  - E. A. Cal Tone
    220
- Logging SLM TWA Settings
  221
  - Ovll Exchange - (LOG)
    221
  - Ovll Threshold - (LOG)
    222
  - Ovll Criterion - (LOG)
    222
  - Criterion Time - (LOG)
    223
  - Crnt Exchange - (SSA, ISM, LOG)
    223
  - Crnt Threshold (SSA, ISM, LOG)
    224
  - Crnt Criterion (LOG)
    224
- LOG and SSA Ln Settings
  224
  - Enable Ln
    225
  - Start Level
    225
  - Ln's
    226
  - Spectral Ln's (SSA Only)
    226
- LOG and SSA Triggering Settings
  227
  - SPL Excd Lvl 1 - (LOG, SSA)
    227
  - SPL Excd Lvl 2 - (LOG, SSA)
    227
  - PK Excd Lvl 1 - (LOG, SSA)
    228
  - Pk Excd Lvl 2 - (LOG, SSA)
    228
  - Hysteresis - (LOG, SSA)
    228
- LOG and SSA Wind/Tach Settings
  229
  - Setup of Wind/Tach Function
    230
  - Wind Scale
    231
  - Wind Units
    232
  - Direction Units
    232
  - Wind/Tach Enable
    233
  - Windy Threshold
    233
  - Wind Exceedance Level
    233
  - Windy Hysteresis
    233
  - Wind Pause Enable
    234
  - Pulse Trigger Voltage
    234
  - Pulse Source
    234
- LOG and SSA Time History Settings
  234
  - Hist Enable - (LOG, SSA)
    236
  - Hist Period (LOG, SSA)
    237
  - Period Units - (LOG, SSA)
    237
  - Other Level - (LOG Only)
    237
  - Resolution - (LOG, SSA)
    238
  - Advanced Time History - (LOG, SSA)
    239
  - Marker Text - (LOG, SSA)
    239
- LOG and SSA Interval Settings
  240
  - Intv Enable - (LOG, SSA)
    241
  - Intv Period - (LOG, SSA)
    241
  - Intv Time Sync - (LOG, SSA)
    241
  - Intv Save Ln's - (LOG, SSA)
    242
  - Intv Auto Stop - (LOG, SSA)
    242
  - Intv Threshold - (LOG, SSA)
    243
  - Intv Exchange - (LOG, SSA)
    243
  - Intv Spectrum - (SSA Only)
    243
- Logging SLM Exceedance History Settings
  244
  - Triggering - (LOG)
    244
  - Excd Enable - (LOG)
    244
  - Min Duration - (LOG)
    244
  - Excd Time Hist - (LOG)
    245
    
    Period - (LOG)
    245
    
    Excd Trigger - (LOG)
    245
    
    Excd Time - (LOG)
    245
    
    Timed Excd Period - (LOG)
    245
    
    Daily Enable - (LOG)
    246
    
    Daily Ln's - (LOG)
    246
  - Logging SLM Define Report Settings
    246
    
    Data Report - (LOG, SSA)
    247
    
    Setup Report - (LOG, SSA)
    247
    
    SPL Histogram - (LOG)
    248
    
    Pk-1 Histogram - (LOG)
    248
    
    Pk-2 Histogram - (LOG)
    248
    
    Intv Report - (LOG, SSA)
    248
    
    Hist Report - (LOG, SSA)
    249
- Menu Layout of SSA Settings
  249
- Menu Layout of Integrating SLM (ISM) Settings
  254
- Menu Layout of Logging SLM Settings
  256
- Advanced Menu Layout
  260
- Check Menus
  263
  - Check Menu Example
    264
  - SLM Check Menu Options (SSA and LOG)
    266
    
    Mark Display
    266
    
    Graph Menu
    268
    
    Settings
    269
    
    Controls Settings Menu
    269
  - Other SSA Check Menus
    269
    
    Any Data Check Menu
    269
    
    RTA Check Menu
    270
    
    Intervals Check Menu
    271
    
    Time History Check Menu
    272
    
    Run Log Check Menu
    273
    
    Ln Centiles Check Menus
    274
  - Other Logging (LOG) Check Menus
    277
    
    Any Data Check Menu
    277
    
    Current SLM / Overall SLM Check Menu
    277
    
    Exposure Check Menu
    277
    
    LN Centiles Check Menu
    278
    
    Stats Check Menu
    279
    
    Run Log Check Menu
    279
    
    Time History Check Menu
    280
    
    Intervals Check Menu
    280
    
    Excd History Check Menu
    281
    
    Daily History Check Menu
    282
Chapter 8 Printing a Report

285
Chapter 9 Performing a Sound Level Measurement

313
- Configuration of the System
  313
- Selecting a Measurement Mode
  313
  - Selecting a Measurement ID
    314
- Editing the Microphone Parameters
  315
- Calibration
  315
- Entering the Noise Floor Values
  316
- Editing the Measurement Parameters
  317
- Positioning the Meter
  319
  - Use of a Windscreen
    319
- Selecting the SLM Display
  321
- Selecting the Measurement Range
  321
  - ISM and LOG Modes
    321
    
    Selecting the Range Setting
    322
- Performing a Measurement
  323
  - Averaging Time
    324
- Linearity Range
  325
- Overload and under Range Conditions
  326
  - Overload Condition
    326
    
    Reset
    326
  - Under Range Condition
    326
- Max, Min and Peak Values
  327
- Measuring for a Preset Integration Time
  328
  - Timer Mode
    328
- Measuring Using User-Selectable Thresholds
  329
Chapter 10 Using the 824 Utility Software

331
- 824 Utility Installation
  331
- Starting the 824 Utility Software
  332
- Connecting to Your Computer
  332
- 824 Utility Tool Bar
  334
- 824 Utility Setup Window
  336
  - Retrieving Setups from the 824
    337
  - Modifying and Storing Setups to the 824
    339
    
    Changing System Settings
    339
    
    Manipulating a Setup
    340
  - Saving Setups to Disk Files
    342
  - Opening Setup Disk Files
    342
  - Creating a New Setup
    344
  - Renaming an Existing Setup
    345
  - Deleting an Existing Setup
    346
  - Locking and Unlocking Setups
    347
- Downloading Measurement Data
  347
- Translating Data from a Downloaded Binary File
  355
- Additional Features
  362
Chapter 11 RTA (Optional)

367
- Settings Menu
  368
- Settings Descriptions
  372
  - RTA Settings Menu
    372
  - Autostore Settings Menu
    374
  - Arm Settings Menu
    375
  - Trigger Settings Menu
    377
  - End Settings Menu
    378
  - Then Settings Menu
    380
  - Trigger Settings Menu (Continued)
    380
  - RT60 Reverberation Time Settings
    382
  - RT60-A and RT60-B Instrument Definition
    383
  - Qualifying Background Noise: Rooms [RTA] ID
    384
- Display Views
  385
  - RTA Views
    385
  - Trigger Views
    389
  - Autostore Views
    391
  - Autostore Bytime Spectral History
    395
  - Bytime Spectrum Check Menu
    396
  - Bytime Graph Check Menu
    397
  - Rt-60
    399
  - RT60 Check Menu
    401
  - Spatial Avg Views
    401
  - Spatial Avg Check Menu
    403
  - Avg History Check Menu
    404
  - Rooms Views
    405
Chapter 12 FFT (Optional)

409
- Features
  409
- Settings Menu
  409
- Settings Descriptions
  411
- FFT Display
  414
  - Fft
    414
  - FFT Check Menu
    416
- THD (Total Harmonic Distortion)
  417
  - THD Check Menu
    418
- Snapshot
  419
  - Snapshot Check Menu
    420
- FFT Calibration
  421
Chapter 13 AUD (Optional)

431
- Connecting the Test System
  432
- Selecting the 824-AUD Operation Mode
  433
- Microphone Sensitivity Calibration
  434
- AUD Modes
  434
  - View Menu
    435
    
    SLM/RTA Submenu
    435
    
    FFT Submenu
    435
    
    Pulse/Fm Submenu
    435
  - Display Sequence
    436
  - SLM+RTA Live Display
    436
    
    SLM+RTA Live Check Menu
    437
  - Any Level -A, -B and -C Displays
    438
    
    Any Level Check Menu
    439
  - Linearity RTA Display
    440
    
    Manual Lock
    442
    
    Linearity RTA Check Menu
    443
  - Linearity FFT Display
    444
    
    Manual Lock
    446
    
    Automatic Lock
    446
    
    Linearity FFT Check Menu
    447
  - Flatness FFT Display
    448
  - THD Display
    449
  - Pulse/Fm Display
    451
    
    THD Check Menu
    451
    
    Pulse/Fm-A Display
    452
    
    Pulse/Fm Check Menu
    454
    
    Pulse/Fm-B Display
    454
- FFT Display
  455

Larson Davis System 824 Reference Manual (536 pages)

Sound Level Meter

Brand: Larson Davis | Category: Measuring Instruments | Size: 3 MB

Table of Contents
5
Chapter 1 Introduction

19
- About this Manual
  19
- About this Chapter
  21
- Formatting Conventions
  21
- Features
  22
  - System 824 Components
    25
  - System Diagram
    28
- Getting Started
  28
Chapter 2 Overview

35
Chapter 3 Front Panel Keys; Their Functions and Menus

51
- Power Key
  53
- Power-Up the Instrument / Viewing PWR Display
  54
- Power Settings
  56
- Extra Notes on Power Conservation
  58
- Run/Stop Key
  59
- Reset Key
  59
- Pause Key
  60
  - Pause
    60
  - Pause, Back Erase
    60
  - Preview
    61
  - Arrow Keys
    61
  - Check Key
    62
  - View Key
    62
  - Data Key
    63
  - Setup Key
    64
    
    Save ID
    66
    
    Title
    66
    
    ID Name
    66
  - Write Protect, Delete, Write Enable Ids
    66
  - Tools Key
    67
  - About
    69
  - Calibration
    72
  - Clock/Timer
    73
  - Memory
    77
  - Deleting Stored Data
    78
    
    Delete Last Function
    78
    
    824 Memory Structure
    79
    
    Deleting the Last Stored Record
    79
    
    Deleting Individual Records
    81
  - Power Monitor
    82
  - Communication
    83
  - Print Key
    86
Chapter 4 Quick Start

89
- Turning on and Calibrating the System 824
  89
- Taking Measurements and Storing Data
  91
  - SLM&RTA Measurements
    91
  - Viewing RTA Displays During a Measurement
    94
- Recalling Stored Data
  96
- Selecting and Modifying Instrument Definitions (Ids)
  98
  - The Setup Menu
    99
  - The Active ID
    99
  - Menu Scrolling
    100
  - Permanent Ids
    101
  - Write-Protected Ids
    101
  - Preparing for a Measurement
    102
  - Selecting a Different ID
    102
  - Accessing the Settings Menu
    102
  - Accessing the Settings Menu to Initiate Editing or Modification
    104
  - Setting Control in the SLM View
    107
Chapter 5 System 824 Virtual Instruments

109
- System 824 Virtual Instruments
  109
- Selecting an Instrument ID
  111
- Combined SLM&RTA
  111
  - SSA Measuring Ranges
    112
  - AC/DC Output
    113
- Logging SLM
  114
  - Time History
    115
  - Interval History
    115
  - Exceedances
    115
  - LN Percentiles (Broadband)
    116
  - LN Percentiles (Spectral)
    116
  - Sound Exposure
    117
  - LOG and ISM Measuring Ranges
    117
Chapter 6 System 824 Views

119
- Status Icons and Indicators
  120
- General Views
  122
  - SLM Views
    122
  - Any Data View
    125
    
    Any Level Format
    125
    
    Any Time Format
    125
    
    Any Impulse Format
    126
- SSA Specific Views
  127
  - SSA Displays
    129
    
    RTA Displays
    129
    
    Tabular RTA Views
    129
    
    Time History Displays
    130
    
    SSA Time History
    134
    
    Run Log
    137
    
    Ln Centiles
    137
- Logging SLM Specific Views
  141
  - Current SLM and Overall SLM Views
    143
    
    Current Slm/Overall SLM Display-A (SPL)
    144
    
    Current/Overall SLM Display-B (Times)
    146
    
    Current/Overall SLM Display-C (Min/Max)
    147
    
    Current/Overall SLM Display-D (Peaks)
    147
    
    Current/Overall SLM Display-E (TWA)
    148
  - Exposure Views
    149
    
    Exposure Display-A
    149
    
    Exposure-B Display
    151
    
    Exposure-C Display
    152
  - Ln Centiles Views
    153
    
    Ln-A Display
    153
    
    Ln-B Display
    154
  - Stats Views
    155
    
    Stats-A Display
    155
    
    Stats-B Display
    156
    
    Stats-C Display
    157
  - Run Log (LOG & SSA)
    158
  - Time History
    159
  - Intervals
    161
    
    Intervals-A Display
    161
    
    Intervals-B Display
    162
    
    Intervals-C Display
    164
    
    Intervals-D Display
    165
    
    Intervals-E Display
    166
  - Exceedance History
    167
    
    Excd-A Display
    167
    
    Excd-B Display
    168
    
    Excd Time History Display
    169
  - Daily Views
    171
    
    Daily-A Display
    171
    
    Daily-B Display
    173
    
    Hourly Leq Display
    174
  - Metrics
    175
    
    Metrics-A Display
    175
    
    Metrics-B Display
    176
  - Passby
    177
Chapter 7 Using ID Setting Files

181
- Recalling ID Setting Files
  181
- Customizing Settings
  182
  - Settings Example - SLM&RTA (SSA)
    182
- Settings Descriptions
  184
  - Common SLM Settings
    185
    
    Title Setting - (SSA, LOG, ISM)
    185
    
    Detector Setting - (SSA, LOG, ISM)
    185
    
    Weighting Setting - (SSA, LOG, ISM)
    186
    
    Gain Setting - (SSA)
    186
    
    Range Setting - (LOG, ISM)
    186
    
    Transducer Setting - (SSA, LOG, ISM)
    187
    
    Random Incidence Microphone Correction
    188
    
    Pk Weighting - (SSA, LOG, ISM)
    188
    
    RTA Detector Setting - (SSA)
    188
    
    RTA Weighting - (SSA)
    189
    
    Bandwidth Setting - (SSA)
    189
  - Common Control Settings
    189
    
    AC/DC Output Settings - (SSA, LOG, ISM)
    191
    
    Logic Input Setting - (SSA, LOG, ISM)
    191
    
    Logic Output Time Setting - (SSA, LOG, ISM)
    193
    
    Logic Output #2
    194
    
    Logic Output #2 Time Setting
    194
    
    Heater on
    194
    
    E. A. Cal Tone
    194
  - Logging SLM TWA Settings
    195
    
    Ovll Exchange - (LOG)
    195
    
    Ovll Threshold - (LOG)
    196
    
    Ovll Criterion - (LOG)
    196
    
    Criterion Time - (LOG)
    197
    
    Crnt Exchange - (SSA, ISM, LOG)
    197
    
    Crnt Threshold (SSA, ISM, LOG)
    198
    
    Crnt Criterion (LOG)
    198
  - LOG and SSA Ln Settings
    198
    
    Enable Ln
    199
    
    Start Level
    199
    
    Spectral Ln's (SSA Only)
    200
    
    Ln's
    200
  - LOG and SSA Triggering Settings
    201
    
    SPL Excd Lvl 1 - (LOG, SSA)
    201
    
    SPL Excd Lvl 2 - (LOG, SSA)
    201
    
    PK Excd Lvl 1 - (LOG, SSA)
    202
    
    Pk Excd Lvl 2 - (LOG, SSA)
    202
    
    Hysteresis - (LOG, SSA)
    202
  - LOG and SSA Time History Settings
    203
    
    Hist Enable - (LOG, SSA)
    205
    
    Hist Period (LOG, SSA)
    205
    
    Period Units - (LOG, SSA)
    205
    
    Other Level - (LOG Only)
    206
    
    Resolution - (LOG, SSA)
    207
    
    Advanced Time History - (LOG, SSA)
    207
    
    Marker Text - (LOG, SSA)
    208
  - LOG and SSA Interval Settings
    208
    
    Intv Enable - (LOG, SSA)
    209
    
    Intv Period - (LOG, SSA)
    209
    
    Intv Time Sync - (LOG, SSA)
    210
    
    Intv Save Ln's - (LOG, SSA)
    210
    
    Intv Auto Stop - (LOG, SSA)
    210
    
    Intv Threshold - (LOG, SSA)
    211
    
    Intv Exchange - (LOG, SSA)
    211
    
    Intv Spectrum - (SSA Only)
    212
  - Logging SLM Exceedance History Settings
    212
    
    Triggering - (LOG)
    212
    
    Excd Enable - (LOG)
    212
    
    Min Duration - (LOG)
    212
    
    Excd Time Hist - (LOG)
    213
    
    Period - (LOG)
    213
    
    Excd Trigger - (LOG)
    213
    
    Excd Time - (LOG)
    213
  - Logging SLM Daily History Settings
    214
    
    Daily Enable - (LOG)
    214
    
    Daily Ln's - (LOG)
    214
  - Logging SLM Define Report Settings
    214
    
    Data Report - (LOG, SSA)
    215
    
    Setup Report - (LOG, SSA)
    215
    
    SPL Histogram - (LOG)
    216
    
    Pk-1 Histogram - (LOG)
    216
    
    Pk-2 Histogram - (LOG)
    216
    
    Intv Report - (LOG, SSA)
    216
    
    Hist Report - (LOG, SSA)
    217
- Menu Layout of SSA Settings
  217
- Menu Layout of Integrating SLM (ISM) Settings
  223
- Menu Layout of Logging SLM Settings
  226
- Check Menus
  232
  - Check Menu Example
    233
  - SLM Check Menu Options (SSA and LOG)
    235
    
    Mark Display
    235
    
    Graph Menu
    237
    
    Settings
    237
    
    Controls Settings Menu
    238
  - Other SSA Check Menus
    238
    
    Any Data Check Menu
    238
    
    RTA Check Menu
    239
    
    Intervals Check Menu
    240
    
    Time History Check Menu
    241
    
    Run Log Check Menu
    242
    
    Ln Centiles Check Menus
    243
  - Other Logging (LOG) Check Menus
    246
    
    Any Data Check Menu
    246
    
    Current SLM / Overall SLM Check Menu
    246
    
    Exposure Check Menu
    246
    
    LN Centiles Check Menu
    247
    
    Stats Check Menu
    248
    
    Run Log Check Menu
    248
    
    Time History Check Menu
    249
    
    Intervals Check Menu
    249
    
    Excd History Check Menu
    250
    
    Daily History Check Menu
    251
Chapter 8 Printing a Report

253
Chapter 9 Using the 824 Utility Software

279
- 824 Utility Software Overview
  279
- 824 Utility Installation
  279
- Starting the 824 Utility Software
  280
- Connecting the 824 to Your Computer
  280
- 824 Utility Tool Bar
  282
- 824 Utility Setup Window
  284
  - Retrieving Setups from the 824
    285
  - Modifying and Storing Setups to the 824
    287
    
    Manipulating a Setup
    288
  - Saving Setups to Disk Files
    290
  - Opening Setup Disk Files
    290
  - Creating a New Setup
    292
  - Renaming an Existing Setup
    293
  - Deleting an Existing Setup
    294
  - Locking and Unlocking Setups
    295
- Downloading Measurement Data
  295
- Translating Measurement Data from a Downloaded Binary File
  303
- Additional Features
  310
Chapter 10 RTA (Optional)

315
- Settings Menu
  316
- Settings Descriptions
  319
  - RTA Settings Menu
    319
  - Autostore Settings Menu
    321
  - Arm Settings Menu
    322
  - Trigger Settings Menu
    324
  - End Settings Menu
    325
  - Then Settings Menu
    326
  - Trigger Settings Menu (Continued)
    327
  - RTA Settings
    329
  - RT60-A and RT60-B Instrument Definition
    329
  - Rooms RTA Instrument Definition
    331
  - RTA Views
    332
- Display Views
  332
  - Trigger Views
    336
  - Autostore Views
    338
  - Autostore Bytime Spectral History
    342
  - Bytime Spectrum Check Menu
    343
  - Bytime Graph Check Menu
    344
  - Rt-60
    347
  - RT60 Check Menu
    348
  - Spatial Avg Views
    348
  - Spatial Avg Check Menu
    350
  - Avg History Check Menu
    351
  - Rooms Views
    352
Chapter 11 FFT (Optional)

357
- Features
  357
- Settings Menu
  357
- Settings Descriptions
  359
- FFT Display
  362
  - Fft
    362
  - FFT Check Menu
    364
- THD (Total Harmonic Distortion)
  364
- Reference Manual
  364
  - THD Check Menu
    366
  - Snapshot Check Menu
    367
  - Entering Linear Units
    368
Chapter 12 AUD (Optional)

373
- Selecting the 824-AUD Operation Mode
  374
- SLM+RTA Mode
  375
  - SLM+RTA Live Screen
    375
  - Any Level-A Screen
    376
- FFT Mode
  377
  - FFT Screen
    377
  - THD (Total Harmonic Distortion)
    378
  - Linearity
    381
- Pulse/Fm Mode
  383
  - Pulse/Fm-A Screen
    383
  - Pulse/Fm-B Screen
    386
  - Pulse/Fm Check Menu
    387

Larson Davis System 824 Training Manual (143 pages)

Analyzer and Precision Sound Level Meter

Brand: Larson Davis | Category: Measuring Instruments | Size: 0 MB

Table of Contents
3
Chapter 1 System 824 Overview

5
- User Interface
  7
- General Description
  5
Chapter 2 Setup S

11
- Simple Sound Analyzer (SSA)
  11
Chapter 3 View

25
- Any Data
  25
- RTA Live, RTA Max, and RTA Leq
  30
Chapter 4 Data D

39
Chapter 5 Tools T

43
- About
  43
- Calibration
  47
  - Modifying the Calibration Level
    52
- Clock/Timer
  53
  - Timer
    57
- Memory
  64
- Lock
  66
- Power Monitor
  67
- Communication
  76
Chapter 6 Log - Logging Sound Level Meter (Option 01)

81
- Current SLM
  82
  - Modifying the SLM Settings
    84
- Stats
  89
  - Modifying the STAT Settings
    90
- Ln Centiles
  91
  - Modifying the Ln Settings
    92
- Exposure
  95
  - Modifying the Exposure Settings
    96
System 824 Training Manual

98
- Overall SLM
  98
  - Modifying the Overall SLM Settings
    100
- Run Log
  101
- Time History
  102
  - Modifying the Time History Settings
    102
  - Viewing Time History Data
    109
- Intervals
  111
  - Modifying the Interval Settings
    112
  - Viewing Interval Data
    119
- Exceedance History
  121
  - Modifying the Exceedance History Settings
    122
  - Viewing Exceedance History Data
    130
- Spectra Intervals
  133
  - Viewing Spectra Intervals
    137

Larson Davis System 824 Training Manual (66 pages)

sound level meter

Brand: Larson Davis | Category: Measuring Instruments | Size: 1 MB

Table of Contents
3
What You will Learn
7
Battery Life
8
Power Key Functions
8
Powering on the 824
8
An Acoustic Chameleon
9
LCD Screen Backlight
9
LCD Screen Contrast
9
Viewing Instrument Ids
10
Navigating the Menus
11
Arrow Keys
13
Check Key
13
Let's Push some Buttons
13
SSA Measurements
14
Time History
14
Interval History
16
Broadband Measurements
17
Lets Go for a Test Drive
19
Rta
19
Slm
19
Intervals
20
Time History
20
Calibration
23
Resetting Data
23
SLM Data
23
Taking a Measurement
23
Viewing Data from the 824 Screen
23
Recalling Data
24
RTA Data
24
Storing Data
24
Download Data Using 824 Utility Software
25
Downloading the Data
26
Translating the Data and Looking at the Reports
28
Content of Reports
29
Exporting Data
29
Printing a Report
29
Reports (824 Utility Software)
29
Summary Report
29
Time History Report
31
Interval Report
32
Chapter 2 Environmental Measurements

33
- Environmental Noise
  33
- Types of Environmental Noise
  33
- Why Measure Community Noise
  35
- What Does the LOG Instrument Measure
  36
- Time History
  36
- Interval History
  38
- Special Advanced Feature
  39
- Time Synchronization
  39
- Exceedance History
  40
- Exceedance Time History
  42
- Setting the Parameters for an Exceedance History
  43
- Excd Enable (Yes)
  44
- Min Duration (000)
  44
- Excd Time-Hist (Yes)
  44
- Period (032)
  44
- Excd Trigger (Level)
  44
- Excd Time (Start)
  44
- Viewing Exceedance History Data on the 824
  46
- Excd-A
  46
- Excd-B
  46
- Time History
  47
- Passby Exceedance
  47
- Passby Measurement
  48
- Daily History
  48
- Explanation of Ldn and CNEL
  49
- Hourly Statistics
  49
- Hourly Leq
  50
- Background Leq
  50
- Hourly Excd Leq
  50
- Metrics
  50
- DNL (Ldn)
  51
- Cnel
  51
- Background Leq
  51
- Excd Leq
  51
- RT60 Measurements
  53
- What Is an RT60 and How Is It Measured
  53
- RT60 Defined
  53
- How Does My 824 Measure an RT60
  54
- Taking an RT60 Measurement
  55
- Exciting the Room
  55
- Setting up the 824 for an RT60 Measurement
  55
- RT60-A and RT60-B Setups
  55
- Advanced RT60 Measurements
  59
- Triggering
  59
- Customizing the Trigger Menu
  61
- Averaging
  61
- End Time
  62
- Trigger and Arm Levels
  62
- Autostore Display
  62

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Larson Davis System 824 Technical Reference Manual (673 pages)

Table of Contents

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