MODEL 824

System 824 RTA / SLM Precision Integrating Sound Level Meter with digital 1/1 and 1/3 octave band filters

The 824-RTA option adds high-speed (2.5ms rate) spectral data gathering to System 824. This option adds Architectural Acoustics, On-board RT-60 decay measurement, Room Criterion, and more.

824Util Software - Creates and manages instrument setups, downloads and translates binary data to ASCII text from Larson Davis Model 824. Requires Firmware version 1.000 or greater.

DSP Series Sound Level Meters
(DSP 80, 81, 82 & 83)

The DSP series of Type 1 integrating sound level meters are ideal data gathering instruments for a wide variety of applications from determining the suitability of noise protection devices, to monitoring noise reduction efforts and identifying low and high frequency noise.

Model 2221 Microphone Preamplifier Power Supply

Typical Applications

• Powering precision microphones and preamplifiers

• Signal conditioning and amplification for use with recorders, data loggers, and frequency analyzers

Features

• Internal battery power with low power consumption

• 0 and 200 volt polarization voltage

• Selectable Flat (Z), A, and C-weighting

• 0 to 50 db gain

• Both instantaneous and latching overload indicators

• LED indicators for output signal, internal battery voltage, and external power analysis

• Drives long cables (500 foot), input and output

• High preamplifier current capability to drive Larson Davis PRM903 preamplifier with internal heater

• Compatible with ICP® powered transducers (using PRA951 adapter)

• Recalls last active setup upon power-up

SRE Squeak and Rattle Evaluator

Typical Applications

• Predict TGW (Things Gone Wrong) in vehicles and components

• Monitor process quality

• Quantify severity of specific concerns based on before/after measurements

• Identify excessive loudness levels in vehicles or components

Features

• Advanced time-varying loudness technology

• Measures N10 and db level

• Spectral, time varying loudness and loudness-Nxx graphics

• Statistical summary to Excel workbook, including raw data, Pareto charts and worksheets, and N10 histograms

• Permits plant-based technicians to perform measurements on large numbers of vehicles or components on a continuous basis

• Portable

• Single and dual channel systems available

ViRTé 3000+

The  ViRTé 3000+  is a note-book sized precision Sound Level Meters and a 1/1, 1/3 octave/FFT realtime analyzer with tachometer input and cross-channel measurement capability.

The model 2800, predecessor to the 2900B and ViRTé 3000+, is still available. For product literature, please contact us.

• Frequency Domain Synchronization Averaging - Addendum for the Model 2900B and 3000+ (in PDF format)

• The RTAUtil32 Software - Downloads and translates binary files to ASCII text from the 2800, 2900B, ViRTé 3000+ and 3200. Features on-screen translation and user-defined translation profiles. Virtual RTA allows capture of RTA display image. Monitor selected frequencies, edit notes, calibrate microphones and much more. Intended for use with firmware revisions 5.xx or greater. (Windows 95)

• The RTAUtil Software - Downloads and translates binary files to ASCII text from the following Larson Davis instruments: 2800, 2900, 3000+ and 3200. Intended for use with firmware revisions 4.xx.(Windows 3.x compatible)

• Features of the Larson Davis 5-Code Firmware

AUDIOMETER CALIBRATION SYSTEMS & AUDitT SOFTWARE

A comprehensive line of couplers, systems and software! Larson Davis Audiometer Calibration Systems combine the speed and power of the System 824 real time analyzer with the sophisticated, yet