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Sound level meter

Nor145

Class 1 Sound level meter

Designed for demanding field and laboratory work, the Nor145 helps you complete measurements faster while maintaining Class 1 precision and repeatability. Configure your preferred workflows once and store them as touchscreen β€œapps,” so you can switch between environmental noise surveys, building acoustics, and occupational noise measurements in seconds.

One-handed operation supports safe handling on ladders, scaffolding, and walkways, while the slim, robust housing is engineered for daily professional use. 

With sound level metrics, frequency analysis, audio recording, and reverberation time included as standard, you capture all key parameters with a single instrument. You can export open text files directly into your reporting environment or streamline post-processing and documentation using Norsonic software.  

Integrated 4G, GPS, LAN, and WLAN connectivity make your measurements immediately available for remote access, audit-ready traceability, and structured documentation as soon as they are taken.

Get a quote
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Sound Analyser Nor145 Applications

Explore the various applications of the Nor145 sound analyser 

This video demonstrates how our advanced sound level meter supports accurate noise measurements across a wide range of industries and acoustic environments.

 

Typical applications:

  • Building and room acoustics

  • Environmental noise monitoring

  • Workplace noise assessment

  • Product and component noise testing

Applications for Nor145 Sound level meter

  • Environmental noise assessments

  • Building Acoustic

  • Room acoustics - STIPA

  • Sound Power

  • Noise monitoring

  • Product noise testing

  • Vibration measurements

  • Noise at Work

  • Low noise measurements

  • Infrasound

  • Ultrasound

Nor145-at-construction-site(800x800px)
Nor145 – Advanced professional sound level meter

The Nor145 is designed for acoustic professionals who require precise, standards-compliant sound measurements and an efficient, modern workflow. A large color touchscreen, clear menu structure, and flexible user configurations provide a familiar, smartphone-like user experience that is fast to learn, quick to operate, and robust enough for demanding field work.

Compact & powerful – Streamlined sound measurement

This single-channel Class 1 sound level meter integrates seamlessly with NorCloud, the NorVirtual App, and the Nor850 measurement system to support both on-site and remote noise measurements.
Built-in WLAN and 4G LTE connectivity enable flexible data access, live monitoring, and remote control wherever your measurement task is located.

Smart tools for modern field operations

Nor145 includes integrated GPS, an internal web server for remote operation from smartphone, tablet, or PC, and the ability to attach text and voice notes directly to your measurement projects. This keeps data, context, and documentation together, simplifying traceability, reporting, and collaboration.

A complete platform for professional noise monitoring

For environmental noise control, consultancy work, industrial noise assessments, and building or room acoustics, the Nor145 delivers reliable, standards-compliant sound measurements. It offers the flexibility required for both short-term surveys and long-term monitoring programs, supporting accurate analysis, regulatory compliance, and consistent decision-making.

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Environmental noise measurement with Nor145

Nor145 is designed to be the preferred tool for all types of environmental noise measurements.

Measurements with markers, audio recordings and event triggered pictures are easily made and synced to your project via the NorRemote app for your phone or tablet (android). The large 4.3” display gives you all the necessary information. Up to 60 measurement parameters may be logged simultaneously.

The advanced trigger system enables different trigger levels for Day, Evening or Night with event triggers to collect markers, audio recordings and pictures. The data can be displayed remotely in a web browser on any device, or by the NorRemote app. From the same remote device, you may change settings or simply check the status of your Nor145.

Nor145 is also optimised for use with NorCloud, our cloud service for noise measurement, control and reporting, all easy connected over the internal 4G modem.

  • Twin time profiles with resolution from 5 ms and additional Moving report with trigger possibility.
  • Extensive trigger system for reports, audio recording, camera and digital output lines.
  • Voice, text and picture notes.
  • 5 independent event triggers (LDEN support)
  • Automatic detection of impulsive noise (ISO/PAS 1996-3:2022).
  • Advanced marker management.
  • Full remote-control support via NorVirtual app for smartphones.
  • Seamless connection to NorCloud for unattended monitoring and reporting.
  • 0-20 sec graphical back erase / pause function.
  • 0-120 sec Audio pre-trigger.
  • Seamless integration to post-processing programs and Excel.
  • API interface for system integrators.

General analyser (environmental) mode has a selection of different display views; portrait and landscape. All Portrait views can either be a single or dual type frame.

Nor283-Nor282-Nor145-BA

Building acoustics measurement with Nor145

Norsonic is known for its long-time tradition of creating the state-of-the art building acoustic analysers. The Nor145 sound level meter is no exception!

It can be used as a stand-alone single channel building acoustic analyser, or as a remotely controlled building acoustic frontend (wireless) for the advanced Nor850 multichannel software thru its hotspot feature.

The Nor145 offers a built-in signal generator for excitation of the source room level measurements or for excitation of the reverberation time measurements. The results are measured in accordance with the ISO 16283 Standard requirements. With additional background level measurement results, the Nor145 offers a on-board calculation of the final airborne sound insulation indices DnT and Rw in accordance with ISO 717. Of course, the similar possibility is available for impact sound insulation index Ln,w using a tapping machine such as the Nor277.

The reverberation time excitation may alternatively be based on an impulsive source. In any case, the Nor145 calculates the results for T15, T20 and T30 in parallel.

The Nor145 analyser is seamless integrated with the Nor850 software; either as a remote frontend to the Nor850 Measurement System, or for easy post processing in the Nor850 Reporting System.

Building acoustics RT view
Upper frame shows receiving room level with background noise. Running L/t in lower frame to evaluate if unwanted noise appears in the measurement.
Building acoustics rating view 1: Calculated sound insulation together with the single number index.
Building acoustics rating view 2: Numerical table to present the single number index along with the spectrum adaption terms.
Building acoustics rating view 3: All numerical results of the analysis plus a level overview graph.
Building acoustics rating view 4: Background noise vs. receiving room levels
Building acoustics rating view 5: The # softkey toggles through specific source positions.
Building acoustics rating view 6: R’w rating.
Two sample pictures out of several views offered for RT measurements.
Building acoustics: Manual adaption of RT time is possible

 

Features

  • Complete calculation of airborne, faΓ§ade and impact sound insulation indices in accordance with international and national standards.
  • Wireless single or dual channel measurements using one or two Nor145 controlled from Nor850.
  • Wireless control of the battery-operated power amplifier Nor282.
  • Reverberation time measurements with parallel calculation of T15, T20, T30, Tmax and EDT.
  • Ensemble averaging of reverberation decays.
  • Backward integration of reverberation decays based on impulse excitation.
  • User adjustment of individual RT decay lines.
  • Signal generator with white, pink or bandpass filtered noise.
  • Supports multiple microphone and loudspeaker positions with corresponding on-board energetic or arithmetic averaging.
  • Project overview with information about all individual measurement details and project progress
  • Seamless integration with Nor850 reporting software.
Nor145-STIPA-transparent(800x800px)
STI calculation based on the STIPA method

  • The STI mode supports the latest revision of the STIPA standard, IEC 60268-16 revision 5.

  • Additional features are background noise correction and auditory correction.

  • Background noise correction can be turned on/off.

  • Auditory correction gives a lower score on the STI value if the STIPA noise signal is too loud or too low. It shall normally be turned on, but the latest revision of the standard recommends it to be possible to turn it off in some special circumstances.

  • The built-in signal generator generates the STIPA signal.

  • A complete measurement sequence takes only 21 seconds.

Features
Standards
Specifications
Options
Downloads
Accessories
Features

  • Class 1 Precision sound level meter and frequency analyser.

  • Easy connectivity via built in WI-FI and 3G/4G. LTE modem.

  • Large colour touchscreen (4.3”).

  • Real push keys for quick operation in challenging environments.

  • Intuitive user interface with graphical icons for selection of measurement mode and custom-made user setups.

  • Voice, text notes and built-in GPS for documentation of the measurements.

  • Wide frequency range (0.4 Hz – 40 kHz in 1/3 octave band and FFT).

  • Parallel 1/3 octaves and FFT analysis.

  • 120 dB measurement range.

Standards

  • ISO 354

  • ISO 717-1, ISO 717-2

  • ISO 1996-1, ISO 1996-2

  • ISO 3382-2, ISO 3382-3

  • ISO 10052

  • ISO 10140-2, ISO 10140-3, ISO 10140-4

  • ISO 16283-1, ISO 16283-2, ISO 16283-3

  • IEC 60268, IEC 61012

  • IEC 61260-1, IEC 61260-2, IEC 61260-3

  • IEC 61672-1, IEC 61672-2, IEC 61672-3

  • EN 61010-1

  • ASTM E1007-21, ASTM C423-23e1, ASTM E336-23, ASTM E413-22, ASTM E90-9

  • ANSI S1.4, ANSI S1.11, ANSI S1.43

  • DIN 45657, DIN 4109-4, TA-LΓ€rm

  • NS 4814, NS 4815, NS 8172

  • BS EN ISO 16283-1, BS EN ISO 16283-2, BS EN ISO 16283-3

  • SS 25267

  • SIA 181

Specifications
General

  • Class 1 according to IEC 61672:2014, IEC 60651, IEC 60804, IEC 61260, DIN 45657, ANSI S1.4, ANSI S1.11, ANSI S1.43

  • Sensor database (with sensor type, sensor name, serial number, sensitivity, calibration history, date of last laboratory calibration, Calibration laboratory name)

  • User setups as apps on start-up screen

  • Level values (with all frequency weightings & time constants): Leq, Lmax, Lmin, LE, LPeak, LFTM5, Ln

  • Frequency Ratings/Networks: A / C / Z / AU

  • Calculated networks:  B / G / User defined

  • Parallel Time constants: F / S / I

  • Frequency analysis in 1/1 & 1/3 octaves: 0.4 Hz – 40 kHz

  • Sampling rate (standard / ultrasound): 48 kHz / 96 kHz

  • Reference spectrum

  • Level statistics / percentiles

  • One measuring range (120 dB dynamics)

  • Dynamic range RMS (dBA): 17 - 137 dB

  • Dynamic range Peak C: 45 - 140 dB

  • SD card: no limit (tested up to 512 GB)

  • LAN interface

  • USB-interface (Host)

  • GPS on-board

  • WLAN on-board

  • 4G-Modem on-board 

  • Digital I/O 

  • API-Interface Option

  • File-Push Service in Cloud

  • Battery (> 8 h / Li-Ion replaceable / 9-15 V DC output)

  • Dimensions (LxWxH, excl. microphone): 235 x 82 x 29 mm

  • Weight (incl.microphone): 535 g 

  • 1/3 octave in parallel with FFT
  • Sampling rate (standard / Ultrasound): 48 kHz / 96kHz
  • Upper frequency normal mode / Ultrasound mode: 24 / 44 kHz
  • Resolution (Standard / Ultrasound: 1.46 Hz / 2.92 Hz (8192 /16384 Line) / 2.93 Hz or 5.86 Hz
  • Auto spectrum, Linear Averaging, Hanning

Reverberation time measurement: 

  • Measuring parameters EDT, T15, T20, T30

  • Frequency range 20 Hz - 20 kHz

  • Measurement methods noise / impulse / swept sine

  • Automatic repeats

  • Adjusting the regression line

  • Sound recording (WAV)

  • Averaging evaluation Tmid according to EN ISO 3382-2


Level measurement:

  • Noise or SweptSine measurement methods

  • Pause function with reverse delete

  • Sound recording (WAV)


Noise generator:

  • On-board
  • Conrol of the Nor282 from Nor145 (via WLAN) 

Project management and evaluation on-board:

  • ISO 16283-1/-2/-3: D, Dn, DnT, Rβ€˜, L’n, L’nT, Rβ€˜45Β°, etc.

  • ISO 10052: LAFmax,n, LAFmax,nT, etc.

  • National standards & special regulations (such as EN ISO, DIN 4109, BS, SIA, Γ–S, ASTM, etc.)

  • Post-processing (include/exclude average)


Functions in combination with software Nor850:

  • Measurement of fluctuating noise (SweptSine)

  • Measurement with high background noise levels (SweptSine / third octave noise)

  • Measuring high levels of sound insulation (SweptSine / third octave noise)

  • Measurement and R’ calculation in 1/12 or 1/24 octave

  • Sound insulation from intensity measurements ISO 15186-2

  • LAFTM5-LAeq and LAeq-LCeq
  • Pause function with flexible reverse delete time
  • 10 freely definable markers per user app
  • Selectable response time for setting markers
  • Text and audio comments
  • Level vs time resolution incl. multispectra: β‰₯ 5 ms
  • Level vs time curves with 2 resolutions (e.g. 5 ms and 1 min)
  • Level vs time curves also for 1/1 & 1/3 octave bands
  • Sound recording  / Audio recording: WAV (8 / 16 / 24 Bit)
  • Pre-trigger for sound recordings: up to 99 s
  • Audio trigger thresholds for 5 day periods
  • Noise Nuisance Recorder Trigger switch
  • Support for NoiseCompass / Weaher station / IP camera 
  • Support for Syscheck of microphones
  • LAEq in parallell with PeakC
  • Reverberation time measurement
  • Ultrasound (AU and 1/3 octave to 40kHz) 
Options

The Nor145 Analyser is designed to be expanded and upgradeable to give you a complete measurement tool for years to come. Norsonic’s retrofit policy ensures regular software updates with new features and new options. followed by a 3 years warranty.

Nor145 basic unit

Nor 145 Basic Unit includes A, C and Z weighting networks, 1/1 & 1/3 octave filters (6,3-20Khz) with measurement of Leq, LeqI, LE – sound exposure level, SPL, Lmax, Lmin with parallel detection of Fast, Slow and Impulse time constants, statistical calculation of Ln, and TMAX5. The measurement data is analysed as global values in addition to two parallel time profiles with an adjustable resolution ranging from 5 ms to 24 h and one moving time profile. Reverberation time in 1/1 octave bands based on impulse excitation. Advanced trigger facilities. Voice and text annotation.

Accessories included:

  • 64 GB Micro SD card (larger cards, e.g. 512 GB can be used)

  • Wind screen Nor1451

  • USB cable

  • Mains adapter Nor345C

  • Carrying case Nor1346

  • Manual

  • Reporting software NorConnect

  • Control software NorVirtual

Microphone and preamplifier must be ordered separately. Choose between several alternatives. Standard alternative is Nor1209 preamplifier and Nor1239, ½” free field microphone.

 

Optional extensions:
BA-BASIC option kit - For basic building acoustics evaluations onboard
  • Reverberation time measurements in 1/3 octave (via impulse or noise excitation).
  • Building acoustics project management and rating according to ISO 16283.
  • Signal generator onboard.
  • Building acoustics reporting software in NorConnect.
  • Building acoustics project management and rating according to national versions of the standards (ASTM, DIN EN ISO, etc.).
  • Building acoustics project management and rating according to national special standards, like DIN 4109-4 and VMPA-Beschlussbuch.
  • Pause/Cont. with Back-Erase feature.
  • Onboard post-processing, like excluding from average, adjusting decay curves, etc.
  • Rating of Service equipment (ISO 10052).
  • Wireless Control of power amplifier Nor282
  • Support for Nor850/RA software (room impulse response measurements incl. rating of open plan offices according to ISO 3382-3).
Requires BA-Basic.
  • 1/1 and 1/3 octave filters (0,4 – 20 kHz in 1/3 octave band) including time profile multi-spectrum functionality. A third order analogue high pass filter with a -3 dB point at 3 Hz may be selected to avoid overloading the input circuitry from low frequency noise.
  • Audio recording and markers text. Adds audio recording and marker management including playback and listen function via headphones.
    • 12 or 48 Khz audio recording sampling rate
    • 8, 16 or 24 bit audio recording resolution
    • 0 to 60 dB digital audio recording gain
    • 0 to 120 sec audio recording pre-trigger
    • Innovative marker management system
  • Reverberation Time decay and calculation of T20 and T30 based on impulse or noise excitation.
  • Enhanced noise assessment package with four triggers for independent setting of different trigger levels during a day.

ENV-Advanced and BA-Advanced option kit

FFT sampling rate is 48 kHz with more than 16000 lines. Upper frequency is 22 kHz. Dynamic zoom from 1 – 64.
The FFT calculation and 1/3 octave spectrum work in parallel.

Requires BA-Basic.
The GPS is used for position identification, and support for exact time synchronisation. Time synchronisation is especially useful when several instruments are used for capturing the same noise event, such as blast monitoring.

With an external IP camera, you can make event triggered pictures. Pictures captured during a measurement is marked as events in the L/t graph and can be view on the Nor145, in NorCloud or in NorReview.

The GPS position is stored as a part of the measurement file. It may also be set to be a part of the file name.

This option is not available as retrofit and must therefore be ordered along with the instrument.

Order code: Nor145/01
This option gives access to NorCloud.

NorCloud subscriptions activated at: norcloud.norsonic.com.

Requires option ENV-Advanced.

 

FFT sampling rate is 48 kHz with more than 16000 lines. Upper frequency is 22 kHz. Dynamic zoom from 1 – 64. The FFT calculation and 1/3 octave spectrum works in parallel.

The upper frequency is extended to 44 kHz in ultrasound mode.

 

Image: Split view with FFT and 1/3 octave. The link cursor feature connects the cursor in FFT and 1/3 octave displays, making it easy to manoeuvre in the frequency domain

 Nor145-FFT-OCT-transparent-(664x664px)

 

 

  • Extends the frequency range of the 1/3 octave filters to 40 KHz. 1/1 octave to 31.5 kHz, and FFT to 44kHz

  • Audio recording is extended to a maximum sampling rate of 96 kHz.

  • AU weighting network is added, giving a total of 4 simultaneously measured weighting networks in addition to 1/3 or 1/1 octave filters allowing simultaneously measurement of A, AU, C and Z weighted parameters, such as LAeq , LAUeq, PeakC and Peak Z.

  • Simultaneously measurement of β€œUltrasound noise at work” with β€œstandard noise at work parameters”. This is a unique feature not seen in any handheld instrument.

A ¼” microphone is recommended to measure correctly due to the limitation in the frequency range and the acoustical influence in the sound field of a standard ½” microphone.

Requires ENV-Advanced option.

Order code: Nor145/14.

  • The built in LTE modem adds functionality to a handheld sound level meter never seen on the market before. It is seamless integrated and only one click is needed to connect to NorCloud, Norsonics web based measurement and reporting solution.

  • Removes all configuration challenges with external modems and combability issues.

  • Save files manually to cloud direct from memory (MEM). Just mark the files you want to manually send to NorCloud or use NorCloud to remote control your Nor145 as a Noise Monitoring Terminal.

Order code: Nor145/16

Note – Not available as retrofit, must be ordered together with the instrument.

Full remote programming support for the environmental mode. Ideal tool for system integrators requiring a sound level meter as a frontend to their application. Including support for Nosie Compass and Weather station. Requires ENV-Advanced.

The use of API option requires a purchase of Nor1056, DLA – Developer License Agreement. This grants 8 hours free support with direct access to API developers’ team.

  • Control and configuration of Nor145, Noise compass and weather station

  • Measurement data readout from Nor145, noise compass and weather station

  • System data readout (battery, memory etc) and data management

  • Continuous audio stream in parallel with measurement data

  • Software developer kit including application program examples.

  • Developer support provided.


Ordercode:

  • Nor145/15 API

  • Nor1056 –  Nor145/150 API license. DLA, Developer License Agreement for access to develop programs using the API for Nor145/150. Includes up to 8 hours free support. The API support environmental mode only, not BA or STi.

 

  • The STI mode supports the latest revision of the STIPA standard, IEC 60268-16 revision 5.
  • Additional features are background noise correction and auditory correction.
  • Background noise correction can be turned on/off.
  • Auditory correction gives a lower score on the STI value if the STIPA noise signal is too loud or too low. It shall normally be turned on, but the latest revision of the standard recommends it to be possible to turn it off in some special circumstances.
  • The built-in signal generator generates the STIPA signal.
  • A complete measurement sequence takes only 21 seconds.

Works with basic instrument.

Order code: Nor145/17.

 Nor145-STIPA

STIPA mode is easy and intuitive to use. The display is composed of a fixed view with two frames. The upper shows each frequency band, while the lower shows the measured values including a bar graph. 

 

 Nor145-STIPA-table

 STIPA – By selecting the lower part of the display and pressing the TBL button, the two modulation indexes for each of the STIPA-octaves will be displayed. 

 

Downloads for Nor145
Instrument software
Installing Nor145 instrument software
pdf
25.02.26
0.30kb Download
Nor145 application - 6.0.2920
zip
22.05.26
0.02gb Download
Copy file to root folder on the SD card. See Installing Nor145 version above.
Contact distributor regarding price for V6. 
Nor145 Service pack - 6.0.0.145
zip
08.04.25
0.03gb Download
Copy file to root folder on the SD card. See Installing Nor145 version above.
This service pack is required for Nor145 application 6.x.
NOTE! You have to upgrade your NorConnect software to v. 5.0.240124 or newer.
Nor145 application - 5.0.6123
zip
18.02.26
0.02gb Download

Copy file to root folder on the SD card. See Installing Nor145 version above.
Contact distributor regarding price for V5.

Nor145 Service pack - 5.0.14
zip
26.02.24
0.03gb Download
Copy file to root folder on the SD card. See Installing Nor145 version above.
This service pack is required for Nor145 application 5.0.6123.
NOTE! You have to upgrade your NorConnect software to v. 5.0.240124 or newer.
Nor145 application - 4.0.5410
zip
18.06.24
0.01gb Download
Copy file to root folder on the SD card. See Installing Nor145 version above.
Nor145 Service pack - 4.0.10
zip
20.04.21
0.03gb Download
Copy file to root folder on the SD card. See Installing Nor145 version above.
This service pack is required for Nor145 application 4.0.5410.
Japanese fonts
zip
08.04.25
0.01gb Download
Japanese fonts must be installed separately if needed.
Korean fonts
zip
08.04.25
4079kb Download
Korean fonts must be installed separately if needed.
Chinese fonts - download seperatly if needed
zip
08.04.25
0.02gn Download
Chinese fonts must be installed separately if needed.
Measuring Infrasound with the Nor145
pdf
29.05.26
1081kb Download
Measuring Ultrasound with the Nor145
pdf
29.05.26
205kb Download
Measuring low noise levels with the Nor145
pdf
29.05.26
298kb Download
Nor145 brochure
pdf
15.04.26
1.361kb Download
Instruction manual in Japanees / 取扱θͺ¬ζ˜Žζ›ΈοΌˆζ—₯本θͺžοΌ‰
pdf
25.02.26
16.4Mb Download
UN38.3 Transports of Dangerous Goods Test Report Nor145
pdf
01.10.24
Download
Material Safety Data Sheet Nor145
pdf
01.10.24
Download
Supplier’s Declaration of Conformity 47 CFR Β§ 2.1077 Compliance Information -
pdf
01.10.24
Download
Declaration of Conformity Nor145
pdf
01.10.24
Download
Release note Nor145-Nor150 v6.0.2920
pdf
22.05.26
Download
Type approval Nor145 - PTB, Germany
pdf
01.10.24
Download
Type approval Nor145 - LNE, France
pdf
01.10.24
Download
Type approval Nor145 - METAS, Switzerland
pdf
01.10.24
Download
Type approval Nor145 - BEV, Austria
pdf
01.10.24
Download
Type approval for Nor145 - Portugal
pdf
01.10.24
Download
Type approval for Nor145 - Poland
pdf
01.10.24
Download
Type approval for Nor145, CIM, Czech Republic
pdf
01.10.24
Download
Accessories

Nor1256 Calibrator

 Nor1255 Calibrator 

Nor1239 Free-field microphone

Nor4641 Portable power backup solution

Nor263B Remote hand switch

NorVirtual App

NorVirtual

Nor1346 Softbag for Nor145

Nor345C Mains adaptor

Applications

What are you going to measure?

Environmental noise

Environmental noise

Reliable noise monitoring with sound level meter, stand-alone terminals or large-scale systems.

Image-107-(1824x2736px)

Building acoustic

Building acoustic is about the sound that travels between rooms - something you'd rather avoid.

Room-acoustics

Room Acoustics

Room acoustics is about the sound quality in a room, for example in a concert hall.

Nor150-sound-intensity-jorge(800x800px)

Sound Intensity

Measure sound level and direction, even in challenging acoustic environments.

Sound-Power

Sound Power

Sound Power is about how much sound energy a source emits per unit of time, measures in watts.

Noise at Work

Noise at Work

Noise measurement at the workplace for easy mapping and documentation of noise levels

FAQ

Here are some frequently asked questions and answers about Nor145

Which standards are supported by Nor145?

Nor145 support several type of standards, ISO, ASTM, Din, BS EN, SS SIA, IEC and more.

You can see the detailed list of all supported standards further up at this page, under standards here

Copy the license code to the memory card / SD card and insert the memory card back into the instrument.

Turn on the instrument and follow these steps:

  1. Go to Setup
  2. Select Instrument
  3. Select About
  4. Select License
  5. Choose Enter License
  6. Restart the instrument
  7. The license is now activated

If you do not see frequency bands in Nor145, verify the following settings:

1. Environmental mode – frequency filters
Go to Setup β†’ Measurement β†’ Frequency settings
Ensure Filter On/Off is set to On.

2. View configuration
Go to Setup β†’ Views
Confirm that at least one view is configured to display frequency bands.

3. Measurement functions (Global activation)
Go to Setup β†’ Measurement β†’ Functions
Verify that at least one frequency-based function (e.g. LfFmax) is enabled.
Ensure it is activated in Global mode (indicated by β€œG” at the top of the screen).

4. Active view and sub-menu check
Navigate to the screen where you expect the frequency bands to appear.

  • Make sure the view is active (highlighted in blue, not greyed out).
  • Tap inside the view to open the sub-menu.
  • Confirm that at least one frequency function (e.g. LfFmax) is selected.
  • The function must be among the first three listed, provided that Max functions in View is set to 3.

5. License verification
If frequency bands still do not appear, check the installed licenses:
Go to Setup β†’ Instrument β†’ About β†’ License
Confirm that 1/1-octave and 1/3-octave analysis is installed.

If the license is not present, octave band analysis will not be available regardless of configuration.

Calculated based on X parameters (frequency + weighting network) and Y measurements per second

Number of values: 40
Bytes per value: 2
Bytes per sample: 80
Samples per second: 8 (i.e. 125 ms resolution)
Bytes per second: 640
Per hour: 2.3 MB
Per day (24 hours): 55.3 MB

 

Get your quote

 
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Norsonic AS, GunnersbrΓ₯tan 2
N-3409 Tranby, Norway

+47 32 85 89 00
info@norsonic.com

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