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General| Brand | Larson Davis |
|---|---|
| Model | 831 |
| Category | Measuring Instruments |
| Language | English |
Details the physical attributes and capabilities of the Model 831 sound level meter.
Provides instructions on physically connecting the microphone to the preamplifier.
Covers information on powering the instrument, including battery and external power.
Explains how to access the Control Panel and its functions like Data Explorer, Setup Manager, and System Properties.
Describes how to access and utilize the Settings Screen for defining measurement parameters.
Explains how to set parameters like Frequency Weighting, Detector, and Integration Method for SLM measurements.
Explains how to set up the Run Mode for measurements via the Control tab.
Provides instructions on how to power on the Model 831 using the ON/OFF key.
Explains the necessity of calibrating the Model 831 using a sound level calibrator before measurements.
Guides on how to start and conduct a sound level measurement, including using the RUN/PAUSE key.
Details the process of storing measurement data, including saving files and overwriting existing ones.
Explains the purposes of calibration: sensitivity determination, overload/under range conditions, and stability.
Guides on activating the Calibration function by selecting the Calibrate icon from the Control Panel.
Details the acoustic calibration method using a sound level calibrator to determine sensitivity.
Explains how to set up Industrial Hygiene measurement features from the Settings Screen.
Guides on setting up time history functionality, including period and selecting metrics.
Explains implementation of Measurement History by enabling it in Run Control settings.
Guides on storing measurement history data to memory using the Stop/Store key.
Guides on setting up Event History, including minimum duration and continuation period.
Explains how to activate the FFT instrument mode via Control Panel or Setup Manager.
Guides on accessing measurement settings and configuring parameters like Frequency Span and Weighting.
Explains two ways to activate RT-60 measurement mode: via Control Panel icon or Setup Manager.
Guides on making an RT-60 measurement, including selecting the Impulse or Interrupted Noise method.
Guides on viewing RT-60 measurement data on the RT-60 tab, including Status and Spectra.
Lists the four types of sound recordings: Manual, Marker Initiated, Event, and Measurement.
Guides on setting basic recording parameters like Sample Rate, Range, and Snapshot.
Guides on activating the Data Explorer Page via the Control Panel.
Guides on activating the System Properties tabs via the Control Panel.
Explains Power tab settings including Battery Type, Auto-Off Time, Power-Save Time, and Backlight.
Describes the 831-INT Interface Unit, enhancing Model 831 capabilities with external sensors.
Guides on activating Communication tabs via the Control Panel.
Guides on activating the Lock page via the Control Panel.
Guides on activating the About tabs via the Control Panel.
Guides on activating System Utilities via the Control Panel.
Describes acoustic parameters measured, displayed, and stored by the Model 831.
Explains using G4 LD Utility for installing firmware/option upgrades and remote control.
Guides on upgrading Model 831 firmware using G4, including connection and file selection.
Provides a summary of the Model 831's features, including its capabilities and options.
Details performance specifications for the Model 831 with PRM831 and Direct Input.
References manual sections and tables relevant to IEC61672-1 compliance testing.
Defines Leq and its calculation based on IEC standard 61672-1.
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