LRS-03 Sound level limiter-recorder
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Catalog excerpts

LRS-03  Sound level limiter-recorder - 1

LRS-03 Logger-Limiter Sound Level Main Characteristics The logger-limiter LRS-03 measures records and limits the sound pressure level at the site where it is installed. The LRS-03 is inserted into the reproduction chain, between the mixing desk and the crossover, intervening in the entire • Frequency-Filter Sound Pres- sound chain. sure Level limiter based on the The LRS-03 corrects the signal that feeds the amplifier so that the sound presmeasurement of SPL sure level measured by the sensor does not exceed the programmed maximum level. The LRS-03 automatically corrects excesses of the sound signal level up • Control by emission Sound to 40 dB. If this 40 dB is exceeded, then the LRS-03 penalises with an attenuaPressure Level tion of 60 dB during a programmable period of time. • 40 dB correction (attenuation) range The LRS-03 is also equipped with a recording function that allows the user to • Registers acoustical parameters like LAeq, LAeq1’max, LAeq1’min, LFmax, LSmax and percentiles (interval and sessions) store information concerning sound levels measured in the establishment and concerning incidents that occur, (tampering with the equipment), during a minimum period of one month. The LRS-03 allows you to programme the periodicity of information storage (from 2 min. to 1 h. in 1-min. steps). The information for each session is also stored, allowing you to demonstrate the sound levels generated by your activity to the authorities. The information stored can be consulted in various ways: displaying it on the LCD screen or printing it by connecting a parallel printer to the corresponding LRS-03’s output port. The information can also be transferred to a PC via a USB port or modem. • Registers all incidents, e.g. disconnection from the mains or sensor tampering The LRS-03 allows the programming of different schedules for daytime and for night-time evaluation and the maximum levels allowed for each schedule. The LRS-03 also allows you to enter different working schedules, (session sched• Adaptable to any kind of regu- ules), for each day of the week and can fit any kind of establishment. lation The LRS-03 has an internal battery that allows it to keep on working when the power is disconnected. When the LRS-03 works with the battery, it attenuates • Internal Battery 60 dB. The battery lasts two days. Before the battery runs flat, the LRS-03 re• Data retrieval by LCD screen, cords the date and time when this happens. It keeps a database with the last 10 printer, serial connection with times the battery has gone flat. When the battery is flat, the LRS-03 continues USB and modem attenuating 60 dB until the LRS-03 is connected again to the mains. All the in• Massive data storage for peri- formation is kept in the memory and is not lost. Once the LRS-03 is connected again to the mains it continues running normally. • Can be completely sealed ods longer than 1 month D_LRS03_v0013_20120614_ENG An illuminated external display can be connected to the LRS-03. This allows you to consult the sound pressure level measured and the attenuation applied by the LRS-03 in real time from another point in the room.

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LRS-03  Sound level limiter-recorder - 2

LRS-03 INPUTS AND OUTPUTS Technical Specifications Audio Inputs and Outputs Asymmetrical E/S Connectors (non-balanced): RCA Symmetrical E/S Connectors (balanced): Input: XLR female Output: XLR male Input impedance: 100 kΩ Output impedance: 100 Ω Minimum output charge: 47 kΩ Total harmonic distortion (THD): < 80 dB Absolute maximum input level: ±25 V Maximum input level without distortion: ±13.5 V Frequency response (± 0.5 dB) 20 to 20,000 Hz Typical noise (20 – 20,000 Hz): Balanced: -93dBu Non-Balanced: -90dBu Sensor Measurement range: 60 – 120 dB Frequency range: 20 - 20.000 Hz DISPLAY LCD...

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LRS-03  Sound level limiter-recorder - 3

The LRS-03 is supplied with the software application that allows you to: • Choose the display interval • Generate graphics. Time history of the sound levels. • Obtain data in electronic format. • Programme all the parameters on just one screen. • Creates reports in 5 different language. MULTIFUNCTION DISPLAY Real time data acquisition by modem acoustic instruments Night timet ,il>le: DiTy limit: Attenuation time: Control mode: Session timetnMe Level exceeded: Sensoi inactive: Data deleted: LeqT limit [reception;. | . - ■ j Da*? 117/09/01 | Eilabliil-.f.-.-.--. |l-i-r..i-v ^ ^-Tli Graphical...

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