XL2 Sound Level Meter Function


The Sound Level Meter Function is one of the most powerful functions implemented in the XL2 Analyzer; and it is the ideal tool for community noise analysis, building acoustics, industrial noise control, machinery noise analysis; and further applications.

XL2 Microphones

In fact, with the M-Series measurement microphones feature an automatic sensor detection that reads the previously stored calibration data out of the microphone into the measurement instrument.

As soon as you connect the microphone, it switches over to ASD and reads all the calibration data out of the measurement microphone. It also includes factory calibration and the last user calibration, together with the measurement date and time.

Starting the XL2 Sound Level Meter

To start the XL2 Sound Level Meter, you need to select the appropriate measurement function. Also, the system can be programmed to automatically start up in this mode. As soon as the function is started, the XL2 Sound Level Meter shows all the instantaneous values; and we may choose to change them by selecting frequency weighting A,C or Z: Slow, Fast, EQ and Peak. We can freely choose them and confirm!

Finally, we define if we want to see live, maximum or minimum values. Indeed, under any conditions, the XL2 Sound Level Meter measures all values in parallel. And, you can choose which results he wants to have added to your screen. Also, you can choose the size.

Average values are not yet displayed; because the averaging needs to be started first using the start button. Moreover, the size of the measurement results can be altered by pressing Enter on the measurement values. Actually, it toggles between normal, bold and X-large characters.

Spectral Information

In fact, parallel to the sound level meter, the XL2 can display all spectral information in octave and 1/3 octave resolutions. Also, switching over to the spectral information can be done any time by pressing the page function. In fact, the page function toggles between spectral information and numerical information.

In addition, you may freely choose what levels you want to see in the spectrum information with any frequency and time weighting. And then, you may select which trace you want have to displayed. It can be live, maximum, minimum, EQ or hold for a specific period of time.

Of course, the cursor is always following the maximum energy of the dashed line. However, we may gain control over the cursor by placing the cursor over the icon next to the frequency. Then. you need to press Enter and then every increment changes the cursor. And, you mat read our the EQ and live value. A soon as you leave control, the cursor jumps back to the maximum energy of the dashed curve.


In fact, measurement only have a meaning if they can be stored. Therefore, the XL2 Sound Level Meter features a comprehensive documentation tool that stores all the acquired measurements.

To define a report, you place the cursor to the page selection and select report. The report page defines all the values you want to store after the measurement. This can be either a selected set; or if you don’t know, you can also store all the values.

In case, you’ve defined “selected”, you may define up to 10 levels that you can again freely define out of your selection list and store. In addition, you may add to the wideband values also the spectral information. Of course, with this setting, at the end of every measurement, a complete report is stored together with the measurement results onto the SD card.

XL2 Analyzer

To emphasize, the XL2 Analyzer is a unique combination of a sound level meter, an acoustic analyzer and a powerful audio analyzer. A wide range of measurement microphones are available to meet all your requirements.

In addition to being an advanced sound level meter, the XL2 Analyzer is capable of measuring RTA, high resolution FFT, reverberation times (RT30 / 60), signal polarity, delays and distortion rate (THD + N ).

Thanks to its STIPA option, it also makes it possible to measure the intelligibility rate. This measure is strongly recommended when calibrating voice evacuation systems (EN54) to ensure the correct understanding of the alert messages broadcast. Also, the XL2 Analyzer offers extensive acoustic functions to enable the calibration of cinema systems.

Felixtrument is the an authorized Canadian representative of NTi Audio equipment. So, if you are interested in buying XL2 Analyzer, you may shop online here.

In fact, Felixtrument supplies a complete range of innovative acoustics, audio and vibration equipment which come in different types and sizes. Therefore, if you are in need of any Sound and Vibration equipment; you may browse through our various products which you may find in the mentioned link; to find the one which best suits your needs.


Leave a Reply

0 Comment

There are no comments yet.