Name: Larson Davis 824
Brand: Larson Davis
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10-14 824 Reference Manual 9/29/09

Creating a New Setup

You create new setups by selecting the New Setup menu

item from the File menu or by selecting the New Setup but-

ton on the tool bar.

From the displayed dialog box, select the type of new setup.

Press the OK button and you will now see the new setup in

the Setup List box.

Default Chapter5
- Table of Contents5
Chapter 1 Introduction21
- About this Manual21
- About this Chapter26
- Formatting26
- Features27
- Getting Started34
Chapter 2 Overview41
- System 824 Setups or Instrument Definitions41
- Instrument Definition (ID) Types42
- Selecting a Measurement Setup46
- Performing a Measurement; SLM&RTA (SSA)47
- Views51
  - Selecting a VIEW51
- Data Storage and Recall53
  - Storing Data53
  - Recalling Data53
- Calibration54
  - Correction of Calibrator Output Level57
Chapter 3 Front Panel Keys; Functions and Menus59
- Power Key61
- Run/Stop Key66
- R Reset Key67
- Pause Key68
- Lrud Arrow Keys69
- Check Key70
- View Key70
- D Data Key71
- S Setup Key72
- Ttools Key76
- P Print Key95
Chapter 4 Quick Start97
- Turning on and Calibrating the System 82497
  - High Range Calibration100
- Taking Measurements and Storing Data101
  - SLM&RTA Measurements101
  - Viewing RTA Displays During a Measurement104
- Recalling Stored Data107
- Selecting and Modifying Instrument Definitions (Ids)108
Chapter 5 System 824 Views121
- Status Icons and Indicators122
- General Views124
  - SLM Views125
  - Any Data View128
- SSA Specific Views129
  - SSA Displays131
- Logging SLM Specific Views143
Chapter 6 System 824 Virtual Instruments195
- Selecting an Instrument ID197
- Sound Spectrum Analyzer (SSA)197
- Logging SLM201
Chapter 7 Using ID Setting Files205
- Recalling ID Setting Files205
- Customizing Settings206
  - Settings Example - SLM&RTA (SSA)206
- Settings Descriptions208
- Common SLM Settings209
- Common Control Settings214
- Logging SLM TWA Settings221
- LOG and SSA Ln Settings224
- LOG and SSA Triggering Settings227
- LOG and SSA Wind/Tach Settings229
- LOG and SSA Time History Settings234
- LOG and SSA Interval Settings240
- Logging SLM Exceedance History Settings244
- Menu Layout of SSA Settings249
- Menu Layout of Integrating SLM (ISM) Settings254
- Menu Layout of Logging SLM Settings256
- Advanced Menu Layout260
- Check Menus263
Chapter 8 Printing a Report285
- Connecting the 824 to a Serial Printer285
- Printing Reports286
- Defining and Printing Tailored Reports289
  - Using the Recall Format (SSA and LOG Instruments Only)291
    - Default Settings Values for the Recall Format Reports292
- Printing a Custom Report307
Chapter 9 Performing a Sound Level Measurement313
- Configuration of the System313
- Selecting a Measurement Mode313
  - Selecting a Measurement ID314
- Editing the Microphone Parameters315
- Calibration315
- Entering the Noise Floor Values316
- Editing the Measurement Parameters317
- Positioning the Meter319
  - Use of a Windscreen319
- Selecting the SLM Display321
- Selecting the Measurement Range321
  - ISM and LOG Modes321
    - Selecting the Range Setting322
- Performing a Measurement323
  - Averaging Time324
- Linearity Range325
- Overload and under Range Conditions326
  - Overload Condition326
    - Reset326
  - Under Range Condition326
- Max, Min and Peak Values327
- Measuring for a Preset Integration Time328
  - Timer Mode328
- Measuring Using User-Selectable Thresholds329
Chapter 10 Using the 824 Utility Software331
- 824 Utility Installation331
- Starting the 824 Utility Software332
- Connecting to Your Computer332
- 824 Utility Tool Bar334
- 824 Utility Setup Window336
- Downloading Measurement Data347
- Translating Data from a Downloaded Binary File355
- Additional Features362
Chapter 11 RTA (Optional)367
- Settings Menu368
- Settings Descriptions372
- Display Views385
Chapter 12 FFT (Optional)409
- Features409
- Settings Menu409
- Settings Descriptions411
- FFT Display414
  - Fft414
  - FFT Check Menu416
- THD (Total Harmonic Distortion)417
  - THD Check Menu418
- Snapshot419
  - Snapshot Check Menu420
- FFT Calibration421
Chapter 13 AUD (Optional)431
- Connecting the Test System432
- Selecting the 824-AUD Operation Mode433
- Microphone Sensitivity Calibration434
- AUD Modes434
- FFT Display455
Appendix A Serial Port Interface Remote Control457
- Interface Cables458
  - Connection to a Computer Using CBL006459
- Daisy Chain Addressing461
  - 824 Network, Addressing Commands462
- Commands464
- Remote Control Commands (Detailed465
- Setting Commands486
- Setting List493
- History Data Variables513
- Print Command525
- Error Messages and Warnings527
- Modem Control Mode (All Instruments530
- Unsupported Miscellaneous Commands534
- Data File Commands535
- Keyboard Simulation536
- Operation Notes537
Appendix B Integrated Level Calculations539
- Technical Specifications547
Appendix C Technical Specifications548
- Declaration of Conformity548
- General Specifications549
- 1/1 and 1/3 Octave Filters566
  - Filter Shapes566
- Frequency Response570
- Power/Current Draw of 824 Using External Power595
Appendix D Glossary597
- Average Sound Level (Lavg597
- Community Noise Equivalent Level (CNEL, Lden598
- Criterion Duration (Tc599
- Criterion Sound Exposure (CSE599
- Criterion Sound Level (Lc599
- Daily Personal Noise Exposure Lep,D599
- Day-Night Average Sound Level (DNL, Ldn599
- Decibel (Db)600
- Department of Defense Level (LDOD604
- Dose604
- Detector604
- Eight Hour Time-Weighted Average Sound Level (L TWA(8604
- Energy Equivalent Sound Level (Leq604
- Exchange Rate (Q), Exchange Rate Factor (Q), Exposure Factor (K604
- Far Field605
- Frequency (Hz, Rad/Sec605
- Frequency Band Pass Filter606
- Frequency Filter - Weighted606
- Leq608
- Level (Db608
- Measurement Duration (T608
- Microphone Guidelines608
- Near Field611
- Noise611
- Noise Dose (D612
- Noise Exposure613
- OSHA Level (LOSHA613
- Projected Noise Dose613
- Single Event Noise Exposure Level (SENEL, LAX613
- Sound613
- Sound Exposure (SE614
- Sound Exposure Level (SEL, LET614
- Sound Pressure615
- Sound Pressure Level (SPL, Lp616
- Sound Power(W617
- Sound Power Level (PWL, Lw617
- Sound Speed, (C618
- Spectrum (Frequency Spectrum618
- Threshold Sound Level (Lt618
- Time Weighted Average Sound Level (TWA, LTWA(TC618
- Time Weighting619
- Wavelength (L619
- Wavenumber (K619
Appendix E Memory Usage621
- LOG Memory Usage621
- 824-SSA Memory Usage627
  - Interval Records (Intv History Enabled627
  - Time History Records (Time History Enabled628
Appendix F SLM Testing to IEC61672-1631
- Reference Sound Pressure Level631
- Reference Level Range631
- Microphone Reference Point631
- Average Frequency Response Corrections632
- Periodic Testing of A-Weighted Sound Levels634
- A-Weighted Sound Levels at Upper and Lower Limits of the Linear Operating Range635
- Electrical Signal Input Device635
- Inherent Noise635
- Maximum Sound Pressure Level636
- Power Supply Voltage Range636
- Display Device636
- Stabilization Time Following Changes of Environmental Conditions636
- Electric Field Strength above 10 V/M636
- Greatest Radio Frequency Emission Levels636
- Effect of Electrostatic Discharges637
- Greatest Susceptibility to AC Power and Radio Frequency Fields637
Appendix G Miscellaneous Information639

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Larson Davis 824 Specifications

General

Brand	Larson Davis
Model	824
Category	Measuring Instruments
Language	English

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