Key facts
- Manuals
- 17
- Languages
- ZH · EN
- Last added
- 2023-10-18
Featured Larson Davis manuals
Larson Davis CAL250 Calibrator User Manual
The Larson Davis CAL250 is a battery-operated precision microphone calibrator used for calibrating sound level meters. It delivers a 114.0 dB tone at 251.2 Hz and is designed for field or lab use with NIST-traceable accuracy. The manual covers installation, calibration procedures, environmental precautions, and technical specifications including frequency, distortion, and temperature/humidity ranges.
The device includes a 9-volt alkaline battery, storage case, and adapters for 1/4”, 1/2”, and 1” microphones. Calibration is automatic and lasts up to 60 seconds on a fresh battery. The manual also includes guidelines for recalibration frequency and environmental stability requirements. This manual is written in Chinese.
Covers: Using the CAL250 Calibrator · Installing the Battery · Microphone Calibration · Environmental Precautions · Calibrator Calibration · Technical Specifications
Larson Davis Model 831 SLM User Manual
This manual covers the operation and features of the Larson Davis Model 831 SLM, a precision sound level meter with real-time frequency analysis. It includes setup, calibration, measurement modes, data display, and system utilities. The device supports multiple frequency weightings, RMS detectors, and optional weather measurements. It also features a 2 GB storage capacity, USB connectivity, and a graphic LCD display.
Covers: 831 Features · First Use · Overview · Basic Measurement Setup · Data Display · Run Control
Larson Davis AEC201 Ear Simulator Reference Manual
The Larson Davis AEC201 Ear Simulator is designed for calibrating supra-aural and circumaural earphones in audiometry and telephonometry. It features a 1/2” 377B13 pressure microphone, non-magnetic stainless steel construction, and optional adapters for different earphone types. The device meets IEC 60318-1:2009 and ANSI S3.7-1995 standards and is suitable for both calibration and production testing of electro-acoustic transducers.
The manual includes detailed instructions for assembly, calibration procedures, and testing configurations, along with specifications for frequency response, static pressure, and compliance with international standards.
Covers: Introduction · Components and Construction · Standards · Applications · Inspection and Assembly · Testing Transducers
Larson Davis ADP006 Electrical Signal Insert Adaptor Technical Reference Manual
The ADP006 is an electrical signal insert adaptor designed to replace a 1-inch microphone for testing sound level meters and preamplifiers. It features a 47 pF capacitor for electrical signal injection, a female BNC connector for signal generators, and a ½-inch female microphone thread. A male BNC with an internal short is included for noise floor testing.
Covers: Application · Description · Dimensions · Extra Attenuation · Application Example · Other Microphones
Latest Larson Davis manuals
Larson Davis CAL250 Calibrator User Manual
User Manual 14 pages · 1.8 MB · ZHUser guide for Larson Davis CAL250 battery-powered precision microphone calibrator with setup, calibration, and technical specs.
Larson Davis Model 831 SLM User Manual
User Manual 531 pages · 4.3 MB · ENUser manual for Larson Davis Model 831 SLM sound level meter with features, setup, calibration, and measurement instructions.
Larson Davis AEC201 Ear Simulator Reference Manual
User Manual 37 pages · 4 MB · ENTechnical reference manual for the Larson Davis AEC201 Ear Simulator, covering calibration, testing, and specifications for audiometer and earphone…
Larson Davis ADP006 Electrical Signal Insert Adaptor Technical Reference Manual
Product Leaflet 7 pages · 4 MB · ENTechnical reference manual for the Larson Davis ADP006 Electrical Signal Insert Adaptor, used for testing sound level meters and preamplifiers.
Larson Davis Spark ATEX Noise Dosimeters and Blaze Software Technical Reference Manual
User Manual 234 pages · 3.8 MB · ENThis manual covers the operation, calibration, and data analysis for Larson Davis Spark ATEX noise dosimeters and the Blaze software.
Larson Davis Model 2221 Microphone Preamplifier Power Supply Manual
User Manual 30 pages · 1.3 MB · ENUser manual for Larson Davis Model 2221 microphone preamplifier power supply with features, operation, specs, and warranty info.
Larson Davis SoundAdvisor™ Model NMS044 Reference Manual
User Manual 57 pages · 5.1 MB · ENReference manual for the NMS044 Outdoor Noise Monitoring System, covering setup, operation, and technical specs.
Larson Davis AMC493B Artificial Mastoid Technical Reference Manual
User Manual 37 pages · 2.4 MB · ZHTechnical reference manual for Larson Davis AMC493B artificial mastoid, covering setup, calibration, maintenance, and specifications.
Larson Davis AEC206 Binaural Test Fixture Reference Manual
User Manual 32 pages · 4.4 MB · ENThis reference manual provides instructions for the Larson Davis AEC206 binaural test fixture, covering assembly, calibration, and technical specifications…
Larson Davis BAS002 Power Amplifier & Speakers User Manual
User Manual 73 pages · 4.3 MB · ENUser manual for Larson Davis BAS002 power amplifier and speakers, covering setup, operation, safety, and technical specs.
Larson Davis EPS2116 Microphone/Preamp Environmental Protection System User Guide
User Manual 25 pages · 4.3 MB · ENThis user guide covers the assembly, calibration, maintenance, and technical specifications of the Larson Davis EPS2116 Microphone/Preamp Environmental…
Larson Davis Model 831C Sound Level Meter Reference Manual
User Manual 278 pages · 6.1 MB · ENComprehensive user guide for Larson Davis Model 831C sound level meter, covering setup, calibration, measurement modes, and data management.
Larson Davis CAL150 Precision Acoustic Calibrator User Manual
User Manual 16 pages · 1.1 MB · ENUser manual for Larson Davis CAL150 precision acoustic calibrator, covering setup, operation, calibration, and environmental precautions.
Larson Davis Spartan 730/730IS Noise Dosimeter Reference Manual
User Manual 105 pages · 3.9 MB · ENThis reference manual covers the setup, configuration, operation, and data management of the Larson Davis Spartan 730 and 730IS personal noise dosimeters.
Larson Davis DNA User Manual
User Manual 389 pages · 2.6 MB · ENUser guide for Larson Davis DNA data navigation and analysis application with setup, measurement, and document management instructions.
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in Larson Davis manuals
How long does the CAL250 run on a 9-volt battery?
The CAL250 runs for approximately 100 hours on one 9-volt battery, providing nearly 4,200 calibrations.
What is the calibration tone frequency and level?
The CAL250 provides a nominal tone of 250 Hz at 114 dB.
What is the storage capacity of the Model 831 SLM?
The device has 2 GB of data storage.
What frequency weightings does the Model 831 SLM support?
It supports A, C, and Z frequency weightings.
What frequency range does the AEC201 Ear Simulator cover?
The device covers the frequency range from 20 to 10000 Hz.
What is the clamping force supplied by the main weight?
The stainless steel main weight supplies a clamping force of 4.5 N.