1 Introduction - The Modal Shop, Inc.
Contents
1. Introduction Welcome to the Larson Davis SoundTrack LxT This versatile instrument with graphic display performs the functions of several instruments It puts the combined features of a precision sound level meter and a real time frequency analyzer in the palm of your hand About This Manual This manual has 18 chapters and 5 appendices covering the following topics Chapters LxT Technical Reference Manual Chapter 1 Introduction Orients the user to the contents of this user manual and the LxT features functions and measurement capabilities Chapter 2 First Use Describes the process of unpacking the LxT and preparing for first use Chapter 3 Overview A brief discussion of the displayed views the keypad and navigation through the various functions of the LxT Chapter 4 Basic Measurement Setup A detailed description of setting up the LxT for the measurement of basic sound level parameters Chapter 5 Basic Data Display A detailed look at the various metrics and information presented on these screens during and following a basic sound level measurement Chapter 6 Run Control The LxT provides a number of run modes to control the time duration of a measurement These include Manual Stop Timed Stop Stop when Stable Continuous Single Block Time and Daily Timer modes Chapter 7 Making a Measurement Describes the important steps in making an accurate sound level measurement Chapter 8 Voice2. Recording The user is instructed in the process of recording reviewing and saving voice messages Introduction 1 1 1 2 e Chapter 9 Time History Describes the use of the optional firmware LXT LOG and LXT HSLOG for measuring time history data e Chapter 10 Data Explorer Learn to use the Data Explorer to view stored data files load settings from a saved data file and other operations e Chapter 11 System Properties A discussion of instrument related functions e Chapter 12 Lock and Unlock The LxT A discussion of the various scenarios to lock or unlock the LxT and the interaction with running a measurement e Chapter 13 Calibration Describes the process of calibrating an LxT e Chapter 14 About A look at basic LxT system related information e Chapter 15 System Utilities A description of the utilities available within the LxT e Chapter 16 Hardware A description of the major hardware related features of the LxT e Chapter 17 Parameters Measured An overview of the many parameters measured and recorded by the LxT e Chapter 18 Memory Utilization Presents formulas to determine the memory used when saving parameters to internal memory e Chapter 19 Upgrade Firmware Add Options Describes the procedure for upgrading firmware versions and adding options to the LxT Appendices e Appendix A Technical Specifications Provides a listing of acoustic electronic environmental and physical characteristics
3. of the LxT e Appendix B Measuring to IEC61672 1 Provides specifications and information specifically required to appear in the manual by this standard e Appendix C Integrated Level Calculations provides information on TWA Leq SEL Dose and Projected Dose calculations e Appendix D Glossary Contains technical definitions of key acoustic and vibration terms About This Manual LxT Techncial Reference Manual Features Hardware Features LxT Technical Reference Manual Appendix E Warranty Customer Satisfaction A presentation of warranty and customer satisfaction policies The Larson Davis SoundTrack LxT has the following features Precision integrating sound level meter 256 MB unformatted standard data memory 2 GB optional 160 X 240 graphic LCD display with backlight and icon driven user interface Silent Touch elastomeric keypad Large dynamic range providing single SLM display page Jack for AC DC output or headset microphone and speaker Compatible with 61 m 200 ft microphone extension cable full scale to 20 kHz 4 AA batteries provide 16 hour operating time USB 2 0 full speed peripheral connector and AC DC output Multiple language support English French German Italian Portuguese Spanish and Swedish Field upgradeable firmware WS001 windscreen Features 1 3 Basic Measurements Basic Operation 1 4 SPL Leq Lmax Lmin SEL Lpeak Lpeak max RMS Detectors Slow Fast amp
4. Impulse RMS Frequency Weighting A C amp Z Peak Frequency Weighting A C amp Z Ly Statistics 6 user selected values over the range Lo o1 through Log 99 and Histogram tables 2 Sets of hygiene metrics Lavg TWA x Dose ProjDose Lep d E E8 E40 SEA peak exposure 2 RMS event counters and 3 Peak event counters Auto Store with Auto Reset Run Timer and Stop When Stable Control Real time clock Start time elapsed time and paused time Time stamping for Lmax Lmin Lpeak max metrics Session Log Lock functions Calibration with calibration history and list of calibrators Power management Status bar and About display Multiple languages Data files and Data Explorer Automatic data backup to prevent data loss on power failure Overall measurement Features LxT Techncial Reference Manual Available Options Standard Accessories Real time 1 1 Octave Frequency Analysis LXT OB1 Real time 1 3 amp 1 1 Octave Frequency Analysis LXT OB3 Automatic Data Logging with intervals from 1 second to 24 hours LXT LOG Add LXT HSLOG as well to obtain intervals down to 100 milliseconds Measurement History Environmental Data Logging LXT ENV Community Noise LXT CN Digital Voice Annotation LXT DVA includes SLM LxT Headset ACC003 2 GB Memory LXT MEM2G The LxT is delivered with the standard accessories described below Microphone and Preamplifier The LxT is deliv
5. cluded with the optional accessory LXT DVA Storage Case LXT CCS Features 1 7 1 8 Environmental Protection e EPS2106 2 Environmental Shroud e EPS2108 2 Environmental Shroud e EPS029 LXT Environmental Case with two lead acid batteries and integrated microphone mast e EPS030 LXT Environmental Case with one lead acid battery used with external microphone tripod Tripods e TRP001 Instrument Camera Tripod with ADP032 1 2 in microphone clip Use with EPS2108 2 e TRP002 Microphone Stand with adjustable height and boom angle e TRP003 Support Tripod heavy duty can be used with EPS029 EPS030 and EPS2106 2 Calibrators e CAL150 e CAL200 Printer e PRNOO3 USB Serial Printer Features LxT Techncial Reference Manual LxT Components LxT Technical Reference Manual Microphone Preamplifier LCD Display FIGURE 1 1 The LxT The SoundTrack LxT is a convenient hand held sound level meter real time analyzer with a simple user interface The standard LxT shown in FIGURE 1 1 includes the following 1 2 in diameter condenser microphone Backlit graphic 160 x 240 pixel LCD display 13 key soft rubber backlit keypad AC DC output control USB and external power connectors shown in FIGURE 1 2 True hand held instrument with sure grip pads Features 1 9 Hardware Power Switch AUX Connector FIGURE 1 2 LxT Bottom View 1 10 Features LxT Techncial Reference Manual
6. ered with one of the following combinations of microphone and microphone preamplifer Microphone F Microphone IEC 61672 1 Measurement Instrument Microphone at Preamplifier Sensitivity Conformance Range LxT1 PRMLxT1 377B02 50 mV Pa Class 1 38 dB to 140 dB LxT2 PRMLxT2 375A02 22 6 mV Pa_ Class 2 37 dB to 139 dB Table 1 1 Microphone and Preamplifier Software LxT Technical Reference Manual SLM Utility G3 software providing setup utilities calibration routines remote instrument control from PC data downloading and export of data to 3rd party software such as MS Excel Also includes SLMScreengrabber to capture and save screen displays as bitmap files CBL138 USB cable required for utilization Features 1 5 Other Optional Accessories Microphones Microphone Preamplifiers Windscreen 3 1 2 in diameter WS001 Alkaline Batteries 4 AA Lanyard 1 2 in free field prepolarized microphone 50 mV Pa order 377B02 1 2 in free field prepolarized microphone 23 mV Pa order 375A02 PRMLxTI1 Type 1 with 23 dB capacitive attenuation PRMLxT 2 Type 2 with 15 dB capacitive attenuation PRMLxT1L Low Level Type 1 with no attenuation PRMLxT2L Low Level Type 2 with no attenuation Microphone and Preamplifier Configurations PRMLxT1 or PRMLXxTIL with 377B02 PRMLxT2 or PRMLXxT2L with 375A02 PRMLXxT1 with 377C01 including ADP043 adapter Equivalent Electrical Impedance Adaptor An equivalent electrical impedance adapter ca
7. n be used in place of the microphone when the instrument is being measured electrically The adapter is simply a series capacitor with the same capacitance as the microphone it is replacing The following adapters will be available for sale ADP002 6 8pF Adaptor for 1 4 in 7pF microphone 377B01 or C01 ADP005 18pF for 1 2 in 18pF microphone 375A02 ADP090 12pF for 1 2 in 12 pF microphone 377B02 1 6 Features LxT Techncial Reference Manual Cables Power Supplies Software Accessory Kits Other LxT Technical Reference Manual Direct Input Cable or Adaptor Microphone Extension Cable shielded EXCXXX where XXX is the length in feet XXX 010 020 050 066 100 and 200 available USB Cable CBL138 AC DC Output Cable CBL139 Universal AC Power Adaptor PSA029 12 Volt DC to USB Power Adaptor PSA031 Blaze software SWW BLAZE LXT for setup control and high speed data download DNA Data Navigation and Analysis software for instrument control high speed data download data streaming with real time data display on PC advanced data graphic presentations and powerful report generation features LXT ACC including e LXT CCS Hard Shell Case CAL200 Class I Calibrator PSA029 Power Supply CBL138 USB Cable LXT ACC1 including eLXT CCS Hard Shell Case CAL200 Class I Calibrator PSA029 Power Supply CBL138 USB Cable Headset with microphone for voice recording playback ACC003 Note this is in
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