NTi Audio XL2 Sound Level Meter - Manual (Page 212)

212
Specifications
Audio Analyzer
Level RMS
True RMS detection in V, dBu, dBV and dBSPL •
Range XLR/RCA input: 2 µV - 25 V (-112 dBu to •
+30 dBu)
Accuracy: ± 0.5 % @ 1 kHz, •
Flatness: ± 0.1 dB @ 12 Hz to 21.3 kHz •
Bandwidth (-3 dB): 5 Hz to 23.6 kHz •
Resolution: 3 digits (dB scale),5 digits (linear scale) •
or 6 digits (x1 scale)
Real-Time
Analyzer
RTA
Following measurement functions offer audio spec-
trum in Volt, dBu and dBV
Sound Level Meter •
FFT •
1/12 Octave (optional) •
Frequency Range: 9 Hz to 21.3 kHz •
Resolution: 6 digits •
Accuracy: < ± 0.003% •
THD+N
(Total Har-
monic
Distortion +
Noise)
Range: -100 dB to 0 dB (0.001% to 100%) •
Minimum level: > -90 dBu •
Fundamental frequency range: 10 Hz to 21.3 kHz •
Measurement bandwidth: 2 Hz to 23.6 kHz •
Resolution: 3 digits (dB scale) or 4 digits (linear •
scale)
Residual THD+N @ XLR/RCA input: < 2 µV •
Scope Auto ranging, auto scaling
Filter Frequency weighting: A, C, Z •
Highpass 100Hz, 400 Hz, 19 kHz, •
Bandpass 22.4 Hz - 22.4 kHz in accordance with •
IEC468-4
Remote
Measure-
ment
(optional)
Querying measurement data online via the USB •
interface
Input / Output Interfaces
Audio Inputs
XLR balanced with input impedance = 200 kOhm, •
phantom power: +48 V switchable, automated
sensor detection for NTi Audio’s ASD measure-
ment microphones and pre-amplifier MA220
RCA unbalanced with input impedance >30 kOhm •
Built-in condenser microphone for polarity testing, •
delay measurements and voice note recording
Audio
Outputs
Built-in speaker •
Headphone connector 3.5 mm Minijack Stereo •
USB Inter-
face
USB mini connector for data transfer to PC, XL2
Projector and/or charging of Li-Po battery
Digital I/O Connection interface to accessories
XL2 Input Keypad •
Digital I/O Adapter Box •
Digital I/O Adapter PCB •
TOSLink 24 bit linear PCM audio signal output
(prepared for later firmware extension)
Memory SD Card included (4 GByte), removable, storing
measurement data in ASCII format, screen shots,
voice notes and wav-files