Larson Davis 831 - Basic Measurements; Basic Operation

1-2 Basic Measurements Model 831 Manual
• USB 2.0 full speed host connector for mass storage,
cellular and dial-up modems and future devices
• USB 2.0 full speed peripheral connector for control
and data download by a PC
• AUX control connector for USB remote power,
weather transducers and the 831-INT
• I/O connector for communicating with peripheral
devices such as weather transducers
• Multiple language support: English, French, Italian,
German, Spanish and Russian
• Field-upgradeable firmware
Basic Measurements
• SPL, Leq, Lmax, Lmin, Lpeak, Lpeak(max)
• 2 RMS event counters and 3 Peak event counters
•L
N
statistics: computed to 0.01% with 0.1 dB
accuracy over the range L
0.01
through L
99.99
, with
display of six on the meter, and Histogram tables
Basic Operation
• Status Bar and About display
• Auto-Store with Auto-Reset
• Run Timer and Stop-When-Stable Control
• Back-erase
• Markers to annotate portions of time histories
• 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
• Names Setup files and Setup Manager