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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
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