User manual of XL2 handheld portable audio analyzer, introducing the product features and usage methods
This manual describes the NTi Audio XL2 hand‑held audio analyzer, its key functions such as RMS/THD, FFT, RT60 and LAF measurements, and the various application areas including acoustics, building sound, and health monitoring.
It includes sections on key operation, available interfaces (digital, USB, DC power, RCA, TOSLink, Mini‑SD), microphone options, calibration procedures, warranty terms, and appendices with technical tables.
| Firmware version | V2.22 |
|---|---|
| Firmware release date | July 2011 |
| Digital input | Available |
| USB interface | Available |
| DC power input | Available |
| TOSLink output | Available |
| Mini‑SD slot | Available |
| RMS / THD measurement | Supported |
The XL2 is shipped with firmware version V2.22.
The XL2 provides a digital input, USB, DC power input, RCA input, TOSLink output, and a Mini‑SD slot.
It can perform RMS/THD, FFT, RT60, and LAF (e.g., LAF90%) measurements.
Calibration uses a factor k2, which can be obtained by measurement or from the KSET function in the calibration chapter.