Overview / Interfaces

Thank you for purchasing the XL3 Acoustic Analyzer. The XL3 is a very powerful class 1 acoustics analyzer with network access. It bases on the latest developments of processors, converters and display technologies ensuring easy and comfortable operation of the system.

The broad set of functionality is optimized for the following applications:

  • Sound level measurements & unattended noise monitoring:
    • Environmental noise analysis;
    • Workplace noise measurements;
    • Car and traffic noise.
  • Room & Building acoustics:
    • Reverberation time;
    • Airborne noise isolation;
    • Structure-borne noise isolation;
    • Facade isolation.

Interfaces

These here are the interfaces and controls of the XL3.

Balanced XLR microphone or audio input. The XLR input has an automatic sensor detection ASD, i.e. as soon as an NTi Audio microphone is connected, the XL3 automatically switches on the 48 V Phantom power and reads the calibration data of the measurement microphone.

Programmable digital input/output interface for controlling external devices (e.g weather station) or detecting external input signals (e.g. via the complainant key, etc.).

Connection for the supplied XL3 power supply. For specifications, see chapter Power supply.

Indicates the battery charge status by means of an LED:

No charger / power supply unit is connected;
The charger is connected and the battery is fully charged;
The power supply unit supplies the device with power and charges the battery;
(flashing) power supply not sufficient.

USB-C socket for connecting external devices such as 600 000 535 USB-C to LAN Adapter, as well as for charging the device.

Device for attaching the wrist strap and mounting an anti-theft device (Kensington Lock).

Internal voice microphone for recording comments.

Micro SD-card for saving measurement results, or display graphics, WAV files.
USB-A socket for connection of external devices.
Keypad for operating the XL3.
High-resolution,color touchscreen for the device control and for displaying measurement results, etc.
Headphone output to listen to the input signal.

ΒΌ" thread for mechanical mounting of the XL3 (e.g. on a photo-tripod).

Replaceable Li-Ion battery.

Fold-out stand for convenient operation on a table.

Built-in speaker to listen to the input signal or recorded comments. The internal speaker is automatically disabled when headphones are connected.

The nameplate can be found underneath the battery and contains all information about the hardware version, serial number and device configuration.

This push-button contact is used to reboot the device from the inserted SD-card.

Do NOT press this button unless instructed by the NTi Audio support.

The built-in light sensor will allow the XL3 to automatically adjust the brightness of the display and LEDs to the ambient conditions if desired (planned).

(dark) no network connection;
(yellow) Network detected, but no connection established yet;
(white) Connection to the internet established;

(blue) connected to connect.nti-audio.com.

This LED indicates, whether the instrument is in TA-mode (Type Approval): Whenever this LED is lit, only the certified modules of the sound level meter are active, i.e. the measurement results can be used in court.