XL2 Audio and Acoustic Analyzer Introducing the new flagship of the handheld EXEL line. V1.001, Sep....

XL2

Audio and Acoustic Analyzer

Introducing the new flagship of the handheld EXEL line.

V1.001, Sep. 09

XL2

Audio and Acoustic Analyzer

• Sound Level MeterReal Time Analyzer

XL2

Audio and Acoustic Analyzer

• Sound Level MeterReal Time Analyzer

• Acoustic Analyzer

XL2

Audio and Acoustic Analyzer

• Sound Level MeterReal Time Analyzer

• Acoustic Analyzer• STI-PA Analyzer

XL2

Audio and Acoustic Analyzer

• Sound Level MeterReal Time Analyzer

• Acoustic Analyzer• STI-PA Analyzer• Audio Analyzer

XL2

Applications

• Live Sound Solutions • Sound Installations and

Recording Studios • Broadcast • Environmental Noise

Measurements • Service and Repair Centers

XL2

Configurations

• Set XL2 + M2210XL2 with M2210 - Extended Performance - Measurement Microphone withclass 1 frequency response

• Set XL2 + M4260XL2 with M4260 Measurement Microphone, Class 2

+

M2210

+

M4260

XL2 Interfaces

Big LCD 160x160with Backlight

Function Buttons

Limit LED withred, yellow, green Indication

Rotary Wheel

ShockProtectionJacket

HeadphoneOutput

Wire Stand

Rear Speaker

Battery Compartmentwith Li-Po Batteryincluded

Tripod Mount

Balanced &Unbalanced Input

Voice NoteMicrophone

Mains PowerAdapter Input

Digital I/O(prepared for later

firmware extension)

USB Interface

Mini-SD Card 2 GByteRemovable

TOSLink Output(prepared for laterfirmware extension)

XL2 Key Features

XL2

Features

• Flexible User Interface • Visual Limit LED of high sound

levels • Mini-SD Card, 2 GB removable • Real Time Clock • Built-in Speaker • Rechargeable Li-Po Battery

included • Automated Sensor Detection

reads electronic data sheet of M4260 and M2210

• Wave File Recording* • Voice Notes*

*optional

XL2

Sound Level Meter / RTA

• Applications– Live Sound Events– Environmental Noise Monitoring

XL2

Sound Level Meter / RTA

• Measures actual level, Leq, Lmin, Lmax, LCpeak, …

• Frequency weighting A, C, Z• Time Weighting F, S, I*• Linear operating range >100dB• XL2 accuracy acc. IEC 61672, class

1• Logs automatically to Mini-SD card• Real time clock

*optional

XL2

Sound Level Meter / RTA

Extended Acoustic Pack • Percentiles %: 1, 5, 10, 50, 90,

95, 99%• Time Weighting: Impulse• Sound Pressure Level LIeq

• Sound Exposure Level LAE• TaktMax as specified in DIN

45645-1• WAV-file recording (ADPCM) • Voice note recording• High-resolution FFT up to 0.3Hz

steps

XL2

Sound Level Meter / RTA

• All measurement results are simultaneously available.

• Select the available levels to be shown on the XL2 display

XL2

Sound Level Meter / RTA

• 3 or 5 levels may be displayed simultaneously in different selectable sizes

XL2

Sound Level Meter / RTA

• Displays two spectra simultaneously

• Resolution selectable• Broadband values displayed in

parallel• Measurement range selectable• Measurement time and control

XL2

Sound Level Meter / RTA

• Pre-defined limits for all levels• Firmware V1.00 operates with

fixed limits– Level ok Limit LED is

GREEN – Level near limit LED is

YELLOW– Limit exceeded LED is RED

XL2

Live Sound Challenges

• Sound pollution protection limits maximum level in audience area.

• Loudest audience position is commonly not accessible for measurements.

• XL2 offers a wizard to measure correction values k1 and k2 between loudest position and measurement point

Public listening area

Stage

FOH

Loudest accesible position Audience position

MeasurementPosition

k1 = Difference in LAeq

k2 = Difference in LCPeak

XL2

Correction Factor Wizard

• Run Pink Noise in the auditorium

• Measure level at the loudest position

• Measure level at the measurement point, e.g. at the mixing desk FOH

• XL2 stores results with time stamp and displays the calculated correction values k1 and k2

XL2

Audio Analyzer

• Balanced XLR, unbalanced RCA input

• -112 dBu to 30 dBu (1.4uV to 25V)

• Residual THD+N <-100dB (0.001%)

• Frequency range: 9 Hz to 20 kHz

• Frequency accuracy: 0.003%• Loudspeaker and headset

output for signal monitoring

XL2

FFT Analyzer

• Measures LZF and Leq simultaneously

• Real time FFT in 3 ranges– 10 Hz - 220 Hz with 1.5 Hz steps– 20 Hz - 1.7 kHz with 15 Hz steps– 200 Hz - 20 kHz with 150 Hz

steps

• High-resolution FFT including zoom mode up to 0.3 Hz steps with Extended Acoustic Pack

XL2

RT60 Analyzer

• Measures 8 octave bands from 63 Hz – 8 kHz according to ISO3382 by Schroeder-method

• Auto triggering• Auto averaging• Measurement error indication• Stimulus:

– Gated pink noise– Impulse sound source

XL2

Polarity Testing

• Checks polarity of speaker cabinets, individual drivers and line signals

• Positive/Negative detection • Using internal microphone or

input signal of XLR/RCA connector

XL2

Polarity Testing

• In-depth verification of the polarity - frequency relation for speaker cabinets or other multi-way-systems

• Sample Screenshot left:The major part of the signal energy is measured in the mid-range frequency bands, thus the overall displayed polarity is NEGATIVE.

XL2

Propagation Delay

• For accurate setup of delay line arrangements

• Measures delay between electrical reference and acoustical signal

• Relative measurements supported

• Displays distance to speaker in meter or feet

XL2

STI-PA Analyzer

• Measures speech intelligibility of public announcement systems

• Complies with IEC 60268-16 (2003) and NFPA 72

• Displays STI and CIS results• Shows table of modulation

indices and Leq’s• Supports ambient noise post

processing

*optional

XL2

Application Profiles

• XL2 supports application profiles

• Application profile may disable and hide any selections or measurement functions

• Allows fixed operator interfaces for basic users

• Firmware V1.0 offers a set of fixed application profiles

XL2

Store and Log Results

• Results stored as ASCII files• Storing all or subsets of

measurements results• Adding a voice note to

measurement* • Records the ADPCM compressed

audio signal in parallel*

*optional

XL2Automated Sensor

Detection

• Automatically detects microphone type– Reads sensitivity– Reads product data– Shows last calibration

• ASD CableExtension cable tandem up to 20 m supported

XL2

Powering Concept

• Rechargeable Li-Po battery– included– typical battery lifetime > 5 hours

• Dry cell batteries– type AA, 4 x 1.5 V– typical battery lifetime > 4 hours

• Mains power supply 9 VDC– charges Li-Po battery in operation

Measurement Microphones

XL2

Measurement Microphones

• Omni-directional, pre-polarized condenser, free-field microphone

• Build-in Pre-amplifier• Electronic Data Sheet installed • Phantom Power 48 VDC• High dynamic range • Wide frequency range• Low residual noise

M2210 M4260

XL2

Comparison of Microphones

M4260M2210 –Extended Performance

Capsule / Transducer  1/4”

permanently installed capsule

1/2” detachable capsulewith 60UNS2 thread

Flatness  

Class 2 (IEC61672-1)< ±1 dB @ 100 Hz - 1250

Hz< ±3 dB @ 20 Hz - 20 kHz

Class 1 (IEC61672-1)< ±1 dB @ 100 Hz - 4

kHz< ±2 dB @ 10 Hz - 20

kHz

Frequency Range   20 Hz - 20 kHz 1 Hz - 20 kHz

Residual Noise Floor typical   24 dB(A) 18 dB(A)

Upper Limit of Dynamic Range typ.

  136 dBSPL 145 dBSPL

Sensitivity typical  -30 dBV/Pa ±4 dB

(30 mV/Pa @ 1kHz)-34 dBV/Pa ±3 dB

(20 mV/Pa @ 1kHz)

XL2 Accessories

XL2

Accessories

• Ever-Ready pouch– Detachable front flap – Connectors accessible– Zipper

• EXEL System Case– Compartments for XL2, MR-PRO,

M4260 or M2210– Accessories, battery and

adapter

XL2

Accessories

• Battery Charger– Includes spare battery– Connects to 100-230V AC – Intelligent charger controller

• Spare Battery– rechargeable spare battery– Li-Po battery

XL2

Accessories

• ASD Cable– For extended connections of the

measurement microphones M4260 or M2210

– Maintaining the automated sensor detection

– Length = 5 meter (16 feet)

• External AC power supply– Suitable also for use with MR-

PRO– Operates XL2 and chargers Li-Po

battery in parallel

XL2

Firmware Options

• Extended Acoustic Pack– Percentiles: 1%, 5%, 10%, 50%,

90%, 95%, 99%– Time Weighting: Impulse – Sound Pressure Level LIeq, Sound

Exposure Level LAE – TaktMax and values as specified in

DIN 45645-1 – WAV-file recording (ADPCM) – Voice note recording for individual

measurements – High-resolution FFT including zoom

mode up to 0.3 Hz steps at 10 Hz - 20 kHz

XL2

Firmware Options

• STI-PA Option– Measures speech intelligibility of

public announcement systems– Complies with IEC 60268-16

(2003) and NFPA 72– Displays STI and CIS results

New Technologies in Audio