Firmware Options

Spectral Limits Option The Spectral Limits Option extends the function range for the XL2 by trace capturing, relative curve display and comprehensive tolerance handling for the FFT Analysis and the new high resolution RTA function with spectral resolutions up to 1/12th octave. Features: High resolution RTA function “1/12 Oct + Tol” with selectable 1/1, 1/3, 1/6 and 1/12 octave spectral resolution Capturing of multiple readings into the internal memory Comparing measurement results against captures with relative or absolute curve display Comprehensive tolerance handling Creating tolerance masks based on captures for passed/failed measurements Extending the FFT Analysis with capture and tolerance functions Export and import of tolerance- and capture files True peak level in 1/1 and 1/3 octave resolution High-resolution Zoom-FFT up to 0.4 Hz steps in the frequency range 5 Hz - 20 kHz NTi Audio #: 600 000 376

Speech Intelligibility STI-PA The STI-PA function measures the speech intelligibility of public announcement systems according the latest revision of IEC 60268-16:2003 standard. The XL2 displays the measurement results as STI or as CIS results, accompanied by the individual levels and modulation indices of the seven octave bands. The measurement results are acquired from the dedicated STI-PA test signal, generated by the included STI-PA Test CD Minirator MR-PRO, test signal generator, required for audio systems with line inputs NTi Audio TalkBox, acoustic signal generator, required for audio systems with voice microphones, thus measuring the complete signal chain NTi Audio #: 600 000 338

Extended Acoustic Pack The Extended Acoustic Pack offers additional features for sound level- and acoustic measurements: SLMeter/RTA function - Percentile statistics for wide band, 1/1 and 1/3 octave spectrum: 1%, 5%, 10%, 50%, 90%, 95%, 99% - Time weighting: Impulse - Sound Pressure Level LIeq - Sound Exposure Level LAE - Event-triggered audio and data recording - Recording of wav-files (24 bit, 48 kHz), a new wav-file is started after each hour (max. wav-file size 512 MB) - True peak level in 1/1 and 1/3 octave resolution - Clock-impulse maximum level (TaktMax) and values as specified in DIN 45645-1 FFT function - High-resolution Zoom-FFT with selectable frequency ranges and resolution up to 0.4 Hz in the range of 5 Hz to 20 kHz RT60 function - Reverberation time RT60 in 1/3 octave resolution NTi Audio #: 600 000 339

Remote Measurement Option The Remote Measurement Option allows querying the XL2 measurement data online via the USB interface. Thus customers may program their own measurement application on the computer, e.g. for sound level monitoring or automated measurement tasks. The supported XL2 measurement functions are Sound level meter and spectrum analyzer SLMeter Audio analyzer RMS/THDN NTi Audio #: 600 000 375 Download user manual here

XL2 Projector The Projector displays the XL2 screen in real-time via USB on the connected PC. The virtual keyboard enables the user to control the XL2 Audio and Acoustic Analyzer with mouse clicks from the PC. Applications: Live sound engineers can monitor the sound level at distances away from the XL2. The background color of the XL2 Projector turns from green to red according to the user-defined limits. Education and training in audio and acoustics XL2 Projector is a free download for all registered XL2 customers. Register your XL2 Analyzer in My NTi Audio and download the software on the service-website. (requires XL2 firmware V2.10 or higher)

Hardware Accessories

Ever-ready Pouch The Ever-ready Pouch protects the XL2 during transport and operation. With its convenient belt-clip, the XL2 can be kept close by for those tasks requiring both hands. The Ever-ready Pouch allows operation of the XL2 fitted in the pouch. NTi Audio #: 600 000 335

Mains Power Adapter Mains Power Adapter with removable plug types. The Mains Power Adapter suits the typical power sockets in Australia, China, Europe, Japan, US and UK. (Non original power supplies may cause interferences with the measurement.) NTi Audio #: 600 000 333

Spare Battery Have a rechargeable spare battery available for portable measurements, thus the XL2 is ready for operation at any time. NTi Audio #: 600 000 337

Battery Charger The Battery Charger contains a sophisticated battery charge controller for efficient charging of the spare Li-Po battery. The battery charger includes one spare Li-Po battery. NTi Audio #: 600 000 332

ASD Cable The ASD Cable allows for extended connections of the measurement microphones M4260, M2210 or microphone preamplifier MA220, while maintaining the automated sensor detection functionality. You may chain up to 4x ASD Cables together in tandem. Length = 5 meter (16 ft) NTi Audio #: 600 000 336 You may chain up to 4x ASD Cables together in tandem.

XL2 Mounting Adapter This mechanical adapter piece mounts the XL2 on a microphone stand. Adapters for 3/8" or 5/8" stands are included. NTi Audio #: 600 000 372

Exel System Case This compact system case provides the professional transport protection for work in the field. It offers space for the handheld instruments, cables and connectors. NTi Audio #: 600 000 334

Precision Calibrator 94/114 dB, Class 1 certified The precision calibrator ensures accurate sound level measurements. It generates 94 or 114 dBSPL reference tones @ 1kHz for calibration of 1/2" and 1/4" measurement microphones (compatible to all NTi Audio microphones). NTi Audio #: 600 000 390 Download product data here.

Spare Mini-SD Card 2 GByte NTi Audio #: 600 000 374

XL2 Input Keypad The XL2 Input Keypad offers four marker keys to trigger an event recording or categorize any noise during measurements. A typical application is the subjective categorizing of any annoying industrial noise by persons living in the neighborhood. The XL2 Analyzer connects directly to the XL2 Input Keypad and requires an installed optional Extended Acoustic Pack. NTi Audio #: 600 000 384 Download product data here.

Digital I/O Adapter PCB The XL2 Audio and Acoustic Analyzer together with the Digital I/O Adapter control external peripherals, such as displaying exceeding sound levels on a big red-orange-green lamp. The Digital I/O Adapter connects to the digital I/O interface of the XL2 Analyzer. NTi Audio #: 600 000 380 Download product data here.

SPL Stack Light with Digital I/O Adapter Box The XL2 Analyzer controls the external SPL Stack Light via the Digital I/O Adapter Box. This turnkey solution displays exceeding sound levels in orange or red color. The Digital I/O Adapter connects directly to the XL2 Analyzer. Applications: Sound level monitoring at live events or clubs Industrial noise pollution monitoring Digital I/O Adapter Box: NTi Audio # 600 000 381 SPL Stack Light: NTi Audio # 600 000 382 Download product data here.

MA220 Microphone PreAmplifier The 1/2" low noise microphone preamplifier includes an electronic datasheet. The MA220 is compatible with standardized 1/2" microphone capsules, such as B&K, G.R.A.S., MTG, ... NTi Audio #: 600 040 040 Download product data here.

48V -> ICP® Adapter Connects to the XL2 and generates ICP® power supply for alternative microphones or sensors. Specifications: (@ sensor sensitivity = 50 mV/Pa and output impedance < 100 Ohm) Residual Noise Floor typical: 17 dB(A) Maximum SPL: 140 dB NTi Audio #: 600 010 223 ICP® is a registered trademark of PCB Piezotronics.

Manufacturer Calibration Certificate Individual calibration certificate with serial number according to standard EN ISO / IEC 17025. Calibration certificates for new products have to be ordered together with the product. For new product: NTi Audio #: 600 000 018 Recalibration: NTi Audio #: 600 000 370