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Norsonic NOR150, Instruction Manual

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Norsonic NOR150 Instruction Manual Download Page 146

130

Chapter 21

Sound Intensity

Weighted sum range not complient 

Issued if Weighted sum freq. range is not set to exactly 
50 Hz to 6.3 kHz.

Frequency range not complient 

Issued if the filter bandwidth is not equal to or 
exceeeding the range 31.5 Hz to 10 kHz.

Low mid-range power

Indicates that the A-weighted power in bands [50, 315]
Hz and 6.3 kHz is larger than the A-weighted power for 
bands [400, 5000] Hz. The uncertainty for total A is 
then not as stated in the standard, and individual band 
uncertainties apply.

High level outside A-total

Indicates that a frequency band outside Weighted sum 
freq. range is less than 6 dB below the total A-weighted 
value when the band is A-weighted.

Too short averaging time

Issued if either the horizontal or vertical measurement 
time is less than 20 seconds for a segment.

Sound power using ISO 9614-1

The ISO 9614-1 standard differentiates from the 
ISO 9614-2 by using fixed measurement positions 
instead of the scanning procedure. The standard allows 
measuring with accuracies Precision, Engineering and 
Survey.

The following sections will discuss the setup, 
measurement and review of sound power measurements 
according to ISO 9614-1.

Measurement configuration

To set up a measurement, go to 

SETUP

 > 

Applications

 

> 

Sound Intensity

 and select the default setup 

ISO 9614-1

.

The measurement setup will be loaded with the following 
parameters:

Global time: 

10 minutes. 

Profile A: 

100 ms

Filter range: 

1/3 octave bands, 20 Hz to 20 kHz.

Weighted sum frequency range:

 50 Hz to 6.3 kHz

Standard: 

ISO 9614-1

Accuracy:

 Engineering 

Temporal Variability:

Averaging time: 

10 seconds

Number of Averages: 

5

The setup menu is shown in Figure 21.60.

Summary of Contents for NOR150

Page 1: ...friendliness of a smart phone Further features include built in web server camera GPS sound recording voice and text notes sophisticated marker handling and event triggers in addition to high resolution time profile and multi frequency spectra bringing the sophistications normally found in laboratory instrumentation out in the field The instrument is designed to cover a variety of applications bes...

Page 2: ...e use of this information and or the instrumentation described herein Furthermore Norsonic AS assumes no responsibility for any infringement of the intellectual property rights of third parties wherever applicable which would result from such use Norsonic AS reserves the right to amend any of the information given in this manual in order to take account of new developments If you wish to communica...

Page 3: ...ny years of safe reliable operation Your approach to the Nor150 documentation depends on what you want to do and how much you already know This manual is divided into several sections plus an index Each section provides useful and in depth information about the available features Depending on your requirements and your familiarity with measurements as such you may find that you use some parts of t...

Page 4: ......

Page 5: ...y vs external DC 9 Charging the Internal Battery 9 If power fails 10 Power saving maximize your battery power 10 Optional extensions 11 Software maintenance 11 Chapter 3 Your first measurement 12 Turn on the Nor150 12 Select the transducer 12 Check the calibration 12 Select a standard set up 12 Start and Stop of the measurement 12 Saving the measurement to the memory 13 Reducing the influence of t...

Page 6: ... an overview 25 On Off Available Disabled indication 26 Chapter 6 Selecting the different views and the parameters to display 27 Function selection selecting the measurement parameters 30 SPL Live in ended mode 33 Numerical tables 33 Chapter 7 Input selection Menu 34 The Sound channel 1 or 2 menu 35 Line and Vibration sensor 35 Microphones 35 Outdoor microphones 36 The Transducer menu 36 Adding a ...

Page 7: ...ker Setup menu 56 System specified markers 57 Adding a marker to an ongoing measurement 58 Working with markers post processing 58 Chapter 13 Recording the sound Audio record and replay 59 Making a recording 60 Listening replaying an audio recording 61 Insert a reference tone as a recording 61 Chapter 14 Camera 62 Internal camera 62 Device camera 62 IP camera 63 Chapter 15 Voice and Text notes 64 ...

Page 8: ...gnal Generator Optional 74 Chapter 20 Building Acoustic 75 Introduction 75 Measurement Mode 76 Colour assignment 76 Display views in Measurement Mode 77 Single Channel views 78 Dual Channel views 78 On screen menus 78 Setup 79 Input Setup 79 Type Setup 79 Level Setup Figure 20 16 80 Reverberation Setup Figure 20 18 80 Rating Setup 81 Standard 81 Source Figure 20 21 82 Receiving Figure 20 22 82 Tes...

Page 9: ...easurement View 4 97 Exclude measurement positions 98 Adjust reverberation decay line 98 Start a new project 99 Continue an existing project 99 Chapter 21 Sound intensity 100 Setting up the instrument for intensity 101 Assembling and handling the probe 101 Probe dismantling 103 Transducer setup 103 Connecting a smartphone 105 Calibration and phase correction 105 Pressure calibration 105 Phase corr...

Page 10: ...nd indicators 129 Warning indicators 129 Sound power using ISO 9614 1 130 Measurement configuration 130 Measurement time 131 Filtering 131 Measurement precision 131 Temporal Variability 132 Surface definition 132 Measuring 133 Temporal Variability 133 Main measurement 135 Reviewing the measurements 135 Total scope 138 Measurement functions and indicators 141 Chapter 22 Instrument Specific Setup 14...

Page 11: ...ment 156 Analog inputs 157 Input connector 157 Microphone input socket outside view 157 High pass input filter 158 Nor1225 data 158 Preamplifier 158 Nor1209 data 159 Nor1209 Technical Specifications 159 Acoustical data 160 Acoustical data for Nor1225 and Nor1209 mounted on Nor150 160 Reference direction 160 Microphone Reference Point 160 Detailed table for level corrections according to IEC 62585 ...

Page 12: ...c self noise 176 Acoustic self noise 177 Considerations for low noise measurements 177 Measurement duration and resolution 177 Measurement ranges 178 Total range for measurement of A weighted levels 178 Total range for measurement of C weighted levels 178 Total range for measurement of Z weighted levels 178 Measurement range for C weighted peak levels 179 The Nor150 used for electrical measurement...

Page 13: ...erface 184 Data Result storage 184 SD card 184 Internal memory 184 Environmental conditions 185 Warm up time 185 Changes in the environmental conditions 185 Sensitivity to static pressure 185 Sensitivity for vibration 186 Sensitivity for magnetic fields 186 Sensitivity for radio frequencies 186 Emission of radio frequencies 186 Sensitivity for AC power frequency 187 Recovery after electrostatic di...

Page 14: ...x Contents ...

Page 15: ...xi Norsonic Nor150 Instruction Manual nor150 SOUND VIBRATION ANALYSER ...

Page 16: ......

Page 17: ...erly if it is going to be replaced Make sure the instrument and any accessories are not damaged in any way use Only use attachments accessories allowed or specified by Norsonic AS Be careful when using the instrument on a tripod or in combination with a rotating boom Unplug this instrument during lightning storms or when unused for long periods of time Refer all servicing to qualified service pers...

Page 18: ... protection if you connect the instrument to a public or unsecured network If not the instrument is an easy victim for cyber attack It is a good practice to always use a FTP password regardless of the connection environment Also enable a password protection for the NorRemote program Security on page 146 the microphone is an especially fragile device It is easily broken so take care always keep the...

Page 19: ...rgeable Li ion battery pack The battery is fully charged when leaving the factory but due to self discharge you may experience the battery gauge shows a lower value than full The batteries will be charged once the instrument is connected to mains via the supplied mains adapter Nor345A Nor345B Always keep the microphone cartridge mounted on the preamplifier This is the safest way to avoid damage an...

Page 20: ...keyboard and the touch sensitive display You may force the instrument to turn off by pressing the ON OFF key for more than 5 seconds Keyboard The Nor150 is mainly operated via the touch screen There is however a dedicated backlit rubber keyboard used for operation of the main important functions such as power ON OFF measurement START STOP PAUSE and CALIBRATION The philosophy is that all important ...

Page 21: ...Gives access to the menu system Display parameters are also available via pop up menus which are context sensitive Cursor buttons Keys for moving the cursor in graphical and tabular displays The cursor buttons may have different functionality in the different displays On Off Lock Keyboard button ON OFF Turns the instrument On Of or keyboard lock A control question appears on the screen Holding the...

Page 22: ...se it for the current light condition It may be needed to increase the brightness in heavy sunlight while dark environments may call for a lower setting Additionally there is a time out function that will turn off the backlight after a preset time Touch the screen or push a button and the light will be turned on again Please note that the use of the backlight makes a significant impact on the powe...

Page 23: ...easuring no event Event trigger fulfilled Audio camera Green Blinking Yes Any of the event triggers are fulfilled recording or camera The LED lights continuous as long as the recording video picture is on Overload Red Continuous Instantaneous overload only not latched Battery too low at start up Red Blinking No Rapid flashing before shutting down Battery low when running Yellow Blinking Yes Instru...

Page 24: ...r socket The mains adapter Nor345A is connected to the large circular socket See chapter Technical Specifications on page 156 for further description Several sockets are located behind the rubber cover on the bottom side of the instrument LAN socket Mini USB socket Normal USB socket Micro SD card socket Headset This socket is intended for connecting a headset with microphone The signals directly f...

Page 25: ...ed between mains adaptor and battery power Hence always keep the battery pack installed even when continuously powering the instrument via the external power socket This will increase the power redundancy An external DC voltage 10 28 V can also be used to power the instrument A cable for this purpose is available separately from Norsonic or our distributors Please note that fast charging of the in...

Page 26: ...e Nor150 has a built in power saving feature that turns down the backlight and eventually switch itself off if left unattended in ready mode I e the instrument is not measuring or is in ended mode Power saving maximize your battery power The Nor150 has a sophisticated power saving system to maximize the battery power In the Setup Instrument Power Setting menu you may adjust time out for the bright...

Page 27: ... with new features and bug fixes By carefully listening to our customers we implement their wishes to improve the handling of the instrument and expand it with new features New software versions can be uploaded from our website and are free of charge if the version is on the same main software version level A software upgrade fee is charged if you want to upgrade to the next main version i e from ...

Page 28: ...ibrator type Nor1256 or similar to produce the test signal See Calibrating the instrument field check on page 40 Select a standard set up The easy and repeatable way to perform a measurement is to select one of the stored set ups from the memory If none of these suit your needs you can make your own and save them for later use See Application Selection Menu Predefined Setups on page 72 Start and S...

Page 29: ...n connect an extension cable between the preamplifier and the instrument Using e g a 2 meter Nor1410A with Lemo socket in both ends will not influence the measurement quality A microphone holder Nor1261 or Nor1262 is available for the purpose Limiting the influence of wind and dust The use of the windscreen Nor1451 will limit the influence of wind and dust on the microphone These foam balls are ma...

Page 30: ... the term is used to denote the combination of RMS or Peak detection with certain time constants when applicable and certain spectral weighting functions involving measurement duration whenever relevant Examples of such functions are A weighted Leq the A weighted SPL etc The functions are based on the following data types SPL The instantaneous Sound Pressure Level Lmax The Maximum Sound Pressure L...

Page 31: ... presented in several ways as statistical and cumulative distribution but also as percentiles There are 8 percentiles settings available This must be set up in advance before a measurement The spectral weighting functions A C and Z are measured simultaneously and in addition to the 1 3 or 1 1 octave filter bands optional FFT optional can be measured simultaneously with 1 1 or 1 3 octave filter ban...

Page 32: ...t can be specified in Hours Minutes and Seconds and it must be a multiple of the Profile A period length Activating Profile B and or Moving report will force Profile A period length to 1 second and it is not possible to continue a measurement if the measurement is elapsed or the stop is activated manually The time profile logs the selected measurement values in time intervals defined by the user P...

Page 33: ...ith 48 kHz sampling rate 1s No limitation on multispectrum functions and dual channel audio recording with 12 kHz sampling rate or single channel audio recording with 48 kHz sampling rate Please Note The dual channel audio recording is limited to a sampling rate of 12 Khz There is no limit to the of number weighting network functions A C and Z only the multispectrum functions If time profile B or ...

Page 34: ...1 to 99 9 The statistical distribution calculation applies to the spectral weighting networks A Z and C as well as all the individual filter bands if applicable The statistics is also calculated for each period of the time profile providing the time profile resolution is set to one minute or more in the profile A The graphical back erase feature Figure 4 5 which deletes the most recent seconds 0 2...

Page 35: ...l also be loaded The display Figure 5 2 is divided in three main sections On the top is a status bar holding information about the current state and at the bottom is a row with quick access keys See The status bar and The soft key bar chapter on the next pages for detailed explanation The middle part is either one full or two half displays that can be customized to your needs By holding your finge...

Page 36: ...ocked 4 Application mode 5 Real time clock in ready mode In all other modes the measurement time is displayed 6 Help function 1 2 3 4 5 6 The status bar The status bar is not displayed in the menus Symbol 1 Battery gauge external power Battery gauge Exact capacity can be found in the Info menu Press the INFO button to open this menu External power connected Battery is not charging External power i...

Page 37: ...works in parallel with the Stop button found on the keyboard Symbol 2 Overload indication No overload Instantaneous overload The symbol will turn to yellow after the overload disappear if a measurement is running The LED on the front will also turn to red during an overload Latched overload This indicates that there has been an overload during the measurement Please note A dual channel instrument ...

Page 38: ...n picture The softkey bar may have more function in other modes Building Acoustic and Sound intensity application These softkeys are described in the chapters describing these applications The measurement picture The main part of the display is for the measurement results The configuration of the measurement picture named Views is very flexible supporting a variety of different views dependent on ...

Page 39: ... on the screen Each graphical view can display up to 3 measurement parameters simultaneously You may however configure up to eight different parameters per view to display Use the FUNC button to scroll through the selected parameters On screen menus Context sensitive menus Figure 5 3 are available when needed They give access to several of the parameters that decide the look and feel of the view y...

Page 40: ...k Cursors again the cursors in the other displays will jump to the cursor position in the view you are linking the cursors Go To This opens up a submenu where you may key in the cursor position Very useful when working with large L t files Not applicable in running mode Different display types may show different contents Activate and deactivate the result displays If the display is split in two ha...

Page 41: ...ext sensitive menu offers a Go to function for the level vs time and level vs frequency view This is especially useful for large time profile measurements with high resolution Another useful function is to jump between markers This feature is found in the context sensitive menu NOTE You cannot move cursor in the time domain while measuring The main menu system an overview The main menu appears whe...

Page 42: ...ns Signal Generator The signal generator optional provides test signals that match your measurement needs Memory Setup and configuration of the memory Define file naming path etc Results can be organized in folders and projects Instrument This menu contains instrument specific settings like date and time language number formats power saving setting interface setting etc Applications Access the fac...

Page 43: ...the selected level function versus time but no global values available as portrait in single and dual frame mode Figure 6 2 Nor150 offer four different views that you can customize You may rotate between the active views using the VIEW button If wanted some but not all of the views can be left unused One view must be activated in the Setup Views menu Each view can either be a single or dual type f...

Page 44: ...ailable as landscape wide in single frame mode I e The graphical display is turned 90 degrees Ln Combined cumulative and statistical percentage display Figure 6 6 Only available as single frame display Ln landscape Figure 6 7 same as Figure 6 6 but displayed as landscape wide I e The graphical display is turned 90 degrees Above the L t graph is an additional graph that shows the entire L t trace T...

Page 45: ...s the FFT spectra as landscape Figure 6 9 Only available as single frame view NOTE Building Acoustic and Sound Intensity mode offers other views than described here Use the VIEW button to switch between each of the four different views For easy use you may turn off views so that you at the extreme only have one view to deal with Figure 6 9 Figure 6 8 ...

Page 46: ...surement I e the parameters you want to display in any of the views must be measured Use SETUP Measurement Functions menu to select the measurement parameters necessary for your measurement The parameters you select here will be available to select for configuration of the different views You may combine data from channel one and channel two in the same view Figure 6 10 Be careful when selecting t...

Page 47: ...ameters to be displayed simultaneously Back in the measurement display you use the FUNC button below the display to rotate between the selected functions if your selections of measurement parameter excess the number of functions to display in the view Channel for Idle data Selects which channel the SPL value in idle mode should be acquired from This is greyed out if channel 2 is turned off or opti...

Page 48: ...ll be present Once a function is selected an additional field may be present above the list of available functions The selection here is either time constant Fast Slow or Impulse if an exponential average function is selected SPL Max or Min or Normal or Impulse if a time averaged function is selected Leq or LE Note Some of these choices may not be available since it is dependent on the settings do...

Page 49: ...text sensitive menu to turn SPL live on off See figure 5 3 Figure 6 13 Numerical tables Each graphical display has a numerical table as an alternative Use the TBL button to switch between graphical and numeral display Figure 6 13 The TBL button is assigned to the active window To produce a picture like the one shown below first tap the lower display so it is active then use the TBL button to switc...

Page 50: ...d Channel 1 or Sound Channel 2 access a sub menu for selection of available sensors Figure 7 2 a short cut to the Calibration menu and a list of available corrections like Random Incident Windscreen and High Level The corrections available are dependent on the selected transducer The Transducers button opens up a menu for adding removing or modify transducers See description in a separate section ...

Page 51: ...m windscreen Nor1451 is used This adds a frequency compensation in order to compensate for the change in frequency response caused by the windscreen High Level Only available if an external polarized microphone is selected For Nor1225 which is a microphone that require 200 V polarization voltage the sensitivity can be reduced by approximately 10 dB by lowering this polarization voltage The level r...

Page 52: ...door microphones listed above Selecting Nor1210 or a non standard outdoor microphone offers no corrections The Transducer menu The selections Transducer opens up a menu where you may edit add or delete existing sensors Figure 7 4 You may also use this menu to acquire information about the sensors In the Transducers menu a list of the already added transducers is shown As a minimum one Microphone w...

Page 53: ...ned when the last verification was performed A typical sensitivity 50 mV Pa microphone is 26 dB This value is given in dB relative to 1V Pascal This value is used as a new reference line in the calibration history graph As times goes by the actual sensitivity may drift a little bit If it drifts off this is clearly seen in the calibration history view and if it changes too much the system will refu...

Page 54: ...rating the instrument with an acoustic calibrator You may use this difference and key that in to obtain a value closer to the open circuit sensitivity Preamplifier IEPE IEPE on or off Off means a traditional powered preamplifier On means that the IEPE power is added to the signal line on the Lemo connector Adding a new sensor With reference to the previous chapter start by adding a name and then t...

Page 55: ...ucers The Nor150 supports a variety of transducers A typical use is the low noise microphone GRAS 40HL which may be directly connected to the Nor150 You need to specify this as a Non predefined sensor This is an external polarized microphone so the 200 V polarization voltage must be turned on It has internal gain of 20 dB Hence the sensitivity is typical 1 4 dB re 1 V Pa instead of 26 dB re 1 V Pa...

Page 56: ... menu When to calibrate Calibration of the Nor150 should preferably take place before a measurement session is commenced or whenever required by applicable standards Carrying out the field check calibration You will need a sound calibrator of sufficient accuracy i e a class 1 sound calibrator as defined by the IEC 60942 standard such as the Norsonic sound calibrator Nor1251 Nor1255 and Nor1256 The...

Page 57: ...eld microphones shall be adjusted to a value slightly lower than the output level of the sound calibrator For a half inch cartridge this will typically amount to 0 2 dB lower for calibrators producing a 1000 Hz calibration signal e g the sound level meter should then be set to 113 8 dB when using a 114 dB 1000 Hz sound calibrator Other frequencies will require different correction values 5 Set the...

Page 58: ...the sensor given in the sensor administration menu Microphone check For long term monitoring purposes it is often handy to be able to check the functionality of the measurement system along the signal line from microphone preamplifier until the display of the instrument without the use of an external calibrator The Nor150 has a buillt in Mic Check feature that allows this also called SysCheck Pin ...

Page 59: ...wing times should not deviate much from your initial level The Mic Check level is mainly determined by the microphones cartridge capacitance Hence a microphone will return a much lower signal level than 90 dB The Mic Check feature works also with the Norsonic Dehumidifier Nor1284 and Nor1285 mounted 3 It is recommended to not adjust the sensitivity level Just leave the menu either by the cancel or...

Page 60: ...ation of each element time slice in profile B The period length for Profile B must be a multiple of Profile A but shorter than the Global overall measurement time Profile Moving This is the time length of the Moving Leq calculation This is a sliding window updating a new Leq value for the entire moving window every time Profile A calculates a new value The period length must be a multiple of Profi...

Page 61: ...rom the 1 1 or 1 3 octave band filters One limitation should however be observed An analogue high pass filter is enabled at 6 3 Hz if the if lower frequency of the 1 3 octave or 1 1 octave filter is set above 6 3Hz You don t need to consider this for the A and C filter due to the high attenuation at low frequencies The Z filter has a zero response and will follow the analogue HP filters attenuatio...

Page 62: ...equency Weightings Filter and Percentiles menu The column denoted G is global values while the column PA PB and PMov are profile values Please note that the Global value will automatically be turned on if you select the profile value Audio Recording Defines the fidelity of the audio recording gain and pre trigger The resolution must be set to 16 bit if you want to replay the audio recording on the...

Page 63: ... a new measurement each full hour We recommend limiting the use of the synchronized feature for measurement periods which are either a multiple of one hour or one hour divided by a whole number as the feature has been designed with this limitation in mind If you want to apply short measurement periods below a few minutes we generally recommend using the level versus time feature instead time profi...

Page 64: ...e band analysis and the weighting networks enabled The trigger handling and measurement time is not related to the FFT calculation but follows the measurement parameters selected for the weighting networks and the 1 3 or 1 1 octave band given in the setup measurement functions menu The averaged FFT result is continuously updated on the screen during the measurement The measurement may be stopped b...

Page 65: ...ented by the cursor position In order to read the values for each spectral line you have to zoom until the compression factor is 1 You may swap between dB and engineering units in the context sensitive menu Calibration The instrument has to be calibrated with 1 1 or 1 3 octave bands or one of the weighting networks as described in Calibrating the instrument field check on page 40 The readout may b...

Page 66: ... Global measurement time duration is specified in the Global Time in the Measurement menu For most application the Start button is used to start trigger a measurement It is however often required to start a measurement based on other criteria s than to push the start button The Nor150 has a variety of choices found in the Global Measurement menu Figure 11 2 Independent on the selections made in th...

Page 67: ...by the real time clock On Next Full Hour The measurement will start once the real time clock in the Nor150 passes the next full hour External Trigger The measurement will start once the external trigger is activated I e a digital signal on the I O socket pin 1 The hand switch Nor263A or Nor263B is suitable for this use Threshold Configuration of threshold trigger The Global Trigger Threshold menu ...

Page 68: ... trigger level the Level Exceeds must be below and then exceed the set trigger to fulfil the trigger condition In addition to the level the measurement parameter can also be specified Level Drops The measurement will start when the level drops below the set trigger level It derivates from the Level Below in which case it will trigger once the level is less than the set trigger level the Level Drop...

Page 69: ...ent Trigger An event is a significant change in the sound level for more than a minimum period of time The amount of level change required is predefined by you by setting a threshold level Hence the purpose of the event triggers is to start an action based on the event A typical action can be to start an audio recording if the noise exceeds a certain level The event trigger criteria and On Off sta...

Page 70: ...ith several possibilities Pushing the Threshold button opens up a submenu Figure 11 7 where the threshold trigger is specified Both External and Threshold trigger may be activated simultaneously Start Level This is the start trigger level Stop Level This is the stop trigger level Threshold type Above Trigger once the level is above the set trigger level Below Trigger once the level is below the se...

Page 71: ...ed for the different profiles In Profile B and Profile Moving the trigger is fulfilled when the complete level for one profile period is above or below the set trigger level That means that the trigger is checked after an entire period is calculated This differs from trigging on profile A where the trigger is fulfilled once the level reaches the set trigger level That means that the trigger is che...

Page 72: ...ng to note in a measurement Markers are connected to a specific period in the profile measurement There are two types of markers single markers and toggle markers A single marker is mainly used to indicate short duration sound events while toggle markers typically are for noise events that last longer such as pass by noise of a train or similar types of noise In addition to selecting whether the m...

Page 73: ...w toggle marker including a blue shaded field indicates the duration of the pause The values obtained in the pause area are removed from the global measurement but remain in the profile The single marker P is added to the periods to denote that these periods contain data acquired in pause mode Continue A red single marker labelled C for continues is inserted in the time profile if you terminate an...

Page 74: ...one in any view regardless of type you can only perform post processing in the L t view The post processing marker management menu is a context sensitive menu If you place the cursor on a user added marker and open the context sensitive menu you will find one menu point named marker This submenu offers three choices Move Delete or Add Move The marker you placed the cursor on is moved to where you ...

Page 75: ...arge amount of data The Audio setup Figure 13 1 is found under SETUP Measurement Audio Recording Sampling Rate Resolution Three different Resolutions 8 16 24 bit and two sampling frequencies 12 kHz and 48 kHz give in total 6 different formats for the recorded sound The sampling frequency of 48 kHz in combination with 24 bit resolution reflects closely to the basic accuracy of the instrument and sh...

Page 76: ...ggered The duration of a recording and how it shall be started is configured in the Trigger Menu Please refer to Chapter Trigger Selection Menu on page 50 for further details Channel Instruments equipped with the dual channel option allow you to record from either of the two channels or both channels simultaneously Please note that dual channel recording is limited to 12 kHz sampling rate Making a...

Page 77: ...at which allows most media players to play the recorded file if they are transferred to a PC We recommend using NorReview to work with the time profile data and listening to the audio recordings Software version V1 2 and above offers some additional functionality and user friendliness Audio recordings may be replayed via the note menu followed by the playback button This gives you a list of all th...

Page 78: ...d Picture button Ref Figure 14 1 Use the button to take a picture and the leave the camera mode Device camera A device camera is a camera found on pads and smart phones Currently we support Android mobile phones and pads The NorRemote app available for units running Android OS enables event triggered pictures among many other features offer by this mobile app Figure 14 1 Figure 14 2 You must downl...

Page 79: ...era is connected to in the SETUP Instrument Communication WLAN menu if you are using a WLAN connection or in the LAN menu if you are using a cabled LAN connection See Instrument Specific Setup on page 143 and section describing Communication if further instructions is needed 2 In the SETUP Measurement Camera Allow Device camera s menu you add a new connection to the IP camera 3 Once the camera is ...

Page 80: ...es are so called global notes Similar notesmaybe addedto an ongoingmeasurement These notes are called time profile notes The text note will produce a single marker while the voice comment note will produce a toggle marker You may also add text to the global note while the measurement is running To access the global note press Text Note as usual and then the soft key Global found on the soft key ba...

Page 81: ...nd after the measurement is listed Comments recording during a measurements are replayed by placing the cursor on the comment marker indicated by green colour Figure 15 3 You may push the Marker button to enable the jump to next marker function Pictures Voice and Audio recordings may be viewed replayed via the note menu followed by the corresponding note button Playback or Listen button This gives...

Page 82: ...f there was an overload in the selected time span this will also be deleted from the overall measurement The data removed in the pause picture Figure 16 1 is not removed from the time profile Instead a pause marker is inserted in the time profile for easy identification of the paused area The markers are also transferred to the post processing and reporting program NorReview Figure 16 2 shows a pa...

Page 83: ...Hold function In the sound level meter standard IEC 61672 Ed 2 0 there is a request for a hold function so that the operator has the possibility to manually read out more measured values max and peak while the measurement still runs In the Nor150 this type of function is not needed since every level display can have several parameters displayed simultaneously It is up to the operator which results...

Page 84: ...ou configure the file name conventions storage destination move rename and delete files or directories This is also where you store and manage your setups This menu also contains a Set Factory Default feature and a Save Debug Log feature Storage Folder Here you select the folder where you want to store your measurements and you can also create new folders Use the soft key to move up in the folder ...

Page 85: ...e The instrument offers a sophisticated file naming system with a variety of options You may either enter the file name manually when you store the file This is only possible if you have selected manual as storage mode Default suggestion is according to the settings in the Memory menu If Auto Synchronised or Repeat is chosen as storage mode the default automatic file naming is chosen This stores a...

Page 86: ...t of setup files are done in the Manage Setup files menu Push the Manage Setup files button to get access tot he Setup Management menu Figure 17 2 If you have made a measurement setup you will like to reuse store it using the Save Measurement Setup as button This gives access to a submenu where you key in setup name and decide if you want to show it as an icon in the application start up menu Appl...

Page 87: ... a repeat or synchro type It is also possible to delete all measurements in the setup memory menu This feature deletes all files on the memory card This may take several minutes Set Factory default The set factory default feature is found in the Setup Memory menu This will revert all settings you have done back to a factory default setting except from calibration sensitivity stored measurement dat...

Page 88: ...s Standard setup is a set of pre programmed setups usually meant for a measurement task in accordance to a national or international standard The instrument is pre set for each country Hence only the country dependant standard for the country where the instrument is sold will be available This prevents the user from scrolling through a long list of non applicable standards 3 User defined setup set...

Page 89: ...me Creating a user defined setup A user defined setup is stored via SETUP Memory Save Setup as Select if the setup shall be visible as an icon in the Application Selection menu or just in the list stored under the desired application icon You may later change this Please see previous chapter Storing a measurement Memory Organising Menu on page 68 You may also choose to set the setup as write prote...

Page 90: ...he sine and band pass filtered noise can be set in 1 3 octave bands from 6 3 Hz to 20 kHz The built in signal attenuator is adjustable in 1 dB steps from 0 dB to 50 dB attenuation 0 dB equals to 1Vrms The signal generator output is on the multi plug located on the right hand side of the instrument The signal is on pin 15 Ground is pin 14 and the connector housing Two cables are available for this ...

Page 91: ...ird octave bands and the results are reported for each band as well as frequency weighted indices according to ISO 717 1 and ISO 717 2 Full octave measurements are possible by selecting the ISO 10052 standard The mode is entered by pressing SETUP followed by Applications Figure 20 1 Select Building Acoustics from the available applications A list of predefined setups is ready to be picked Figure 2...

Page 92: ...rrent data click Yes when prompted and select the wanted data to be reused see Start a new project on page 99 Start Upon loading an existing project from the memory pressing the softkey Activate will allow additional measurements to be made inside the loaded project see Continue an existing project on page 99 Colour assignment Colours are used to make the views more intuiative for the operator The...

Page 93: ...ed and therefore the setup menu item Views is not available While a single channel instrument will have two views a dual channel instrument will offer four different views The different views are toggled by pushing the VIEW button NOTE The first time a view is activated the appearance is lagged due to the process of creating the graphs Figure 20 4 Figure 20 5 Figure 20 6 Figure 20 7 ...

Page 94: ... is a full screen L f graph of the Receiving room channel s Figure 20 6 is a full screen L f graph of the Source room channel s And Figure 20 7 is a dual L f graph of the source and the receiving room There is a header line showing the selected standard the measurement type Level BGN RT and the source position A D The function name is supplemented with the corresponding graph colour channel number...

Page 95: ...er Selecting the different views and the parameters to display on page 27 Only the possibility to assign a channel to a room type is an additional feature Under Position click a channel to assign it to a room type Figure 20 14 Type Setup Toggle the measurement type by clicking the menu item The measurement type selector Figure 20 15 is used to select which kind of measurement to perform when hitti...

Page 96: ...irement by the standard Instead of entering this setup menu to change the source position use the soft key in SPL mode display Figure 20 17 Reverberation Setup Figure 20 18 Filter enables the user to switch between 1 3 and 1 1 octave measurements Please note that for all but one currently supported building acoustics testing Standards in the Nor150 system only the 1 3 octaves are selectable If ISO...

Page 97: ...n EDT starts at 0 dB below the excitation level and end 10 dB below All the other functions start at 5 dB below the excitation level but ends at 20 25 and 35 dB respectively EnsembleAveragingWhenperformingreverberation time measurements in multiple positions a special feature for Ensemble averaging may be used to average the decay curves before calculation the reverberation time value Rating Setup...

Page 98: ...e actual type of source room Location may be used for describing the location of the source room Receiving Figure 20 22 Volume is the actual volume of the receiving room given in m3 For the receiving room this value is calculated based on entered values for width height and length of the actual room If the room is non square and the final volume is known the user may simply enter 1 for width and h...

Page 99: ...ll be corrected for the measured background noise level when measured The selected Standard automatically gives the details for such corrections 1 10 dB Accuracy tick box is used for making the final sound insulation index calculation in 1 10 dB step instead of the normal 1 dB step This is handy when making small adjustment to the test object that cannot be measured with 1 dB final resolution Ref ...

Page 100: ...e corresponding source position A D by using the soft key Now push either the large START STOP key or the Start soft key to run the measurement The Nor150 will now automatically activate the noise generator The display will then show the frequency spectrum of the source and or receiving room and depending on the selected view combined with the A weighted level vs time values Each graphical view ha...

Page 101: ...85 Norsonic Nor150 Instruction Manual Single Channel views while measuring Dual Channel Views 1 4 while measuring Figure 20 28 Figure 20 29 Figure 20 30 Figure 20 31 Figure 20 32 Figure 20 33 ...

Page 102: ... large START STOP key or the Start soft key to run the measurement The display will then show the frequency spectrum of the receiving room in the same way as for the level measurements Figure 20 36 Each graphical view has an associated numerical table available Just push the TBL button to access it The background noise measurements must be accepted or cancelled in the same way as the level measure...

Page 103: ...le Just push the TBL button to access it Figure 20 38 20 39 If the signal to noise ratio is insufficient for calculating the reverberation time the sign will be displayed instead of a value If the reverberation time measured is too short compared to the values for minimum reverberation times the sign will be shown to the left of the value Insufficient distance to noise floor will be marked with a ...

Page 104: ...roject mode may not be accessible and therefore the soft key is greyed out if no accepted measurements are available Pushing the will close the current measurement project and start a new one If you want to reuse some or all of the current data click Yes when prompted and select the wanted data to be reused see Start a new project on page 99 Display views in Project Mode The Project Mode has a fix...

Page 105: ... navigation method within the current project is to use the arrow keys in the Project view to select the interesting part of the project with the cursor line Either in the Collapsed view Figure 20 42 by selecting the main group Source Receiving Background Reverberation or Rating or in the Expanded view Figure 20 43 in which each individual measurement can be selected with the cursor Then a press o...

Page 106: ...TBL key to expand either of them to full screen The header line contains the selected standard and may show background noise correction information Bgn too high The calculated index may be viewed with or without background noise correction Activate the function in the Rating Setup Use the FUNC key to display other calculated functions e g R w Figure 20 48 Use the soft key to have a specific source...

Page 107: ...m of unfavourable deviations and the maximum unfavourable deviation from the single number index calculation Information regarding the room and element dimensions can be found as well Use the FUNC key to display other calculated functions e g R w Use the soft key to have a specific source position A D displayed The TAB key has no function Rating View 3 This view Figure 20 46 contains all numerical...

Page 108: ...on The measurement types follow after the Rating type in this order Figure 20 51 The different views are displayed by pushing the VIEW button NOTE The first time a view is activated the appearance is lagged due to the process of creating the graphs Rating Reverberation Source Background Receiving The views for the reverberation time and the views for the sound pressure levels are in principle the ...

Page 109: ...or150 Instruction Manual View 1 4 for reverberation time measurements View 1 4 for receiving room measurements Figure 20 52 Figure 20 53 Figure 20 54 Figure 20 55 Figure 20 56 Figure 20 57 Figure 20 58 Figure 20 59 ...

Page 110: ...e the soft key to display the average of a specific source position A D Screen shot of Receiving room total average All Figure 20 60 Avg Energetic Level or linear Reverberation average of accepted measurements SD Standard Deviation of the average N Number of measurements included in the average Screen shot of Receiving average limited to source position A Screenshot 18 61 Figure 20 60 Figure 20 61...

Page 111: ...crophone positions vary If available use the soft key to display the average of a specific source position A D and the measurements belonging to it A source Pos 1 Pos 2 Pos 3 Pos 4 Pos 5 Pos 6 Total average A1 B6 B source Pos 1 Pos 2 Pos 3 Pos 4 Pos 5 Pos 6 A source Pos 1 Pos 2 Pos 3 Pos 4 Pos 5 Pos 6 Total average A1 A6 Total average B1 B6 B source Pos 1 Pos 2 Pos 3 Pos 4 Pos 5 Pos 6 ...

Page 112: ...ure 20 63 of Receiving average on source position B The numerical table has been scrolled to position 2 and 3 Measurement View 3 View 3 displays the average and just one of its measurements graphically and in a table On the upper frame use the arrow keys on the keyboard to scroll the measurement positions On the table frame use the arrow keys Screen shot Figure 20 64 of total average together with...

Page 113: ...line for a specific microphone position or the signal steadiness in the receiving or source room for level measurements Screen shot Figure 20 66 of Reverberation time data for microphone position 3 Use the FUNC key to select a different reverberation time function T20 T30 T15 EDT Tmax Screen shot Figure 20 67 of position 5 and function T30 Due to high background level for the T30 calculation the i...

Page 114: ...ust available in the Measurement View 4 in the Reverberation Report Figure 20 55 A new screen will appear Figure 20 71 in which the arrow keys move the decay line horizontally to a new position The arrow keys adjust the angle of the decay line which also adjust the calculated reverberation time Figure 20 72 When the decay line is brought to a desired position angle press the to confirm To cancel t...

Page 115: ...data click Yes when prompted Figure 20 76 and select the wanted folders to be reused Figure 20 77 Continue an existing project To continue measuring on an existing project load the appropriate project from the memory This project is by default locked for editing or adding new measurement positions in order to avoid deleting important data However use the softkey Activate prior to start additional ...

Page 116: ... sound intensity and sound pressure These are the basic quantities but they are available as time equivalent values as well as instantaneous values with time constants In addition a range of measurement functions are deduced from the basic quantities Some examples are LW sound power and FpI The range of available functions depends on the selected measurement standard The Nor150 will in combination...

Page 117: ... as illustrated in Figure 21 1 Please avoid touching the connectors Mount the lowest serial number microphone adapter on the lowest serial number preamplifier as shown in Figure 21 2 and vice versa Make sure that the lowest serial number combination of microphone preamp is inserted into the probe hardware port A Mount the spacer of choice on microphone A and spacer sleeve on microphone B as illust...

Page 118: ...e rod has 7 pin Lemo connectors functioning as an ordinary microphone cable To use the probe handle connect the probe at the top of the rod then add an extension cable between the bottom end of the rod and the Nor150 The optional smartphone will provide the same view as the Nor150 itself offering a one hand operation of intensity measurements The probe may also be mounted directly on the Nor150 or...

Page 119: ...sducer setup For customers buying the Nor150 with the Nor1290 probe kit all settings are predefined from the factory Setting up the probe is then easily done 1 Enter intensity mode SETUP Applications Sound Intensity 2 Select the Nor1290 probe from the list in SETUP Input Intensity Channel Intensity Probe 3 Accept the changes using the button 4 Configure spacer and environmental parameters 5 Tap in...

Page 120: ... Gain 0 9 dB IEPE Yes f Laboratory as spec in cal chart g Verified sensitivity as spec in cal chart 4 Accept with the soft key 5 Repeat the procedure in in Step 3 for Intensity B 6 Add a new transducer with the following properties a Name My Nor1290 or your preference b Type Intensity Probe c Predefined sensor Yes d Probe Nor1290 e Serial number As spec in verification chart f Channel 1 sensor Int...

Page 121: ...ment In general Norsonic recommend to calibrate the probe each time the environment has changed significantly ambient temperature and pressure especially or every day of measurement A verification should also be done at the end of the measurement day to ensure that the instrument has been reliable throughout the day Most standards require that such a verification is done Calibrating an intensity p...

Page 122: ...90 spacer adjustment knob then put the Nor1294 into CLOSED position as shown in Figure 21 13 Connect the Nor1294 mini jack into the headset output of the Nor150 Then press the START soft key to initiate the correction process A progress bar will keep you updated and the calibration is fully automatic The Nor150 screen is shown in Figure 21 14 NOTE The phase correction relies on accurate positionin...

Page 123: ... Nor1294 is in open position and insert microphones carefully Press the back of the microphones to ensure that the microphones align perfectly Figure 21 13 Tighten the spacer and knob and close the Nor1294 The maximum pressure intensity residual spectrum is determined from the inheritent uncertainty in the correction procedure and the physical properties of the Nor1294 coupler Any FpI values highe...

Page 124: ...cts too low sound pressure during the calibration process This will typically happen if the Nor1294 is left in OPEN position during calibration Abort the calibration close the Nor1294 and restart the process NOTE If the correction process returns lower values than expected the reason might be high pressures applied to the microphones before phase correction This might happen if the microphones are...

Page 125: ...s accepted with the button the resulting pressure intensity residual spectrum is stored The last saved spectrum is always easily available by tapping into Residual Spectrum in the Calibration menu as shown in Figure 21 17 Finally the microphones should be verified separately using a pressure calibrator using the same procedure as specified for microphone calibration in section Calibration and phas...

Page 126: ...ssing the SETUP key followed by a tap on Figure 21 19 Press the New button to start a new project Figure 21 20 The sound intensity setups Figure 21 21 The memory menu offers storing the current measurement setup Figure 21 22 A measurement setup summary Applications and then Sound Intensity The menu is shown in Figure 21 20 The setups have preconfigured settings to suit the application and standard...

Page 127: ...rface enclosing the sound source to isolate it from the surrounding environment Different baseline surface types may be selected In the example in Figure 21 24 the baseline surface type is a cuboid Considering such a measurement surface definition the cuboid will be divided into surfaces left right front back and top Each surface contains a set of segments The concept is illustrated in Figure 21 2...

Page 128: ...lity between two orthogonal scans Each segment is defined by its physical dimensions resulting in an area The area is used for calculation of sound power Figure 21 26 and 21 27 illustrates two common ways of measuring intensity on a surface To define the measurement surface push SETUP and tap into Surface definition menu as illustrated in Figure 21 28 Start with the Surface type to select a baseli...

Page 129: ... will depend on the total measurement surface type These surfaces are configurable from the Surface definition menu In Figure 21 30 the Cuboid surfaces are listed below the Surface Dimensions item Tapping into either of these surfaces will show the parameters defining the surface and allow adjustment of the number of segments inside the surface X Y Z Figure 21 28 The surface type selection Figure ...

Page 130: ...s the segment data will be lost when generating new segments Tapping into a segment enables editing the parameters defining each segment This is possible even after a measurement has been performed causing a recalculation of sound power if this part of the measurement Figure 21 31 shows the options available for a cuboid segment It is also possible to add extra surfaces to any selected surface typ...

Page 131: ...und intensity measurements are possible in 1 3 octave bands with center frequencies ranging from 20 Hz to 20 kHz This setting may not be changed after making the first measurement in a project NOTE In intensity mode the A C and Z networks are calculated from the 1 3 octave bands The frequency range for networks may be changed at any time independent of the filter settings as long as the respective...

Page 132: ...nt standard Warnings functions and views will be configured accordingly Standard the Nor150 provides the following standards Sound power by fixed points ISO 9614 1 Sound power by scanning ISO 9614 2 General mode The setup and features of each measurement standard is discussed in separate sections Accuracy provides a list of available accuracy grades The list depends on the selected measurement sta...

Page 133: ...between intensity and power Warning for cursor position Negative values in opposite direction Warning for current segment Figure 21 34 An overview of the simple view in Sound Intensity mode Warnings for each band Sound intensity with direction Sound pressure level Open the Warning panel Pause Continue with back erase Toggle numerical representation Current surface ...

Page 134: ...ements using three different scopes Total scope shows the total levels based on the sum and average of all segments and values for the different surfaces Surface scope provides levels for all segments inside a surface along with the total levels for the surface Segmentscopeshowstheresultsofanindividualsegment Figure 21 35 Double tap a surface or segment to open the corresponding scope Back will br...

Page 135: ...double tappig an entry and using the Back soft button The colour frames around surfaces and segments indicate the current status of a surface or segment Depending on the standard different conditions apply No colour black indicates that the surface segment or underlying segments are not measured at all Red indicates that not all segments are completely measured Green indicates that all segments ar...

Page 136: ...ay in the scope view Figure 21 41 Idle view Figure 21 42 Running view shows the equivalent sound intensity equivalent sound pressure and instantaneous intensity Figure 21 43 Simple view for the total scope Figure 21 36 Tap and drag up or down to change the level limits Figure 21 37 Tap and hold somewhere on the graph to bring up the context menu ...

Page 137: ...se are easily done by pressing the FUNC key L t view When toggeling through the views the L t view will show up if you are measuring according to ISO 9614 1 This view presents the profile data as a function of time The L t view uses the same mirror style as the spectrum graphs Figure 21 45 HINT L t view can also be shown in Idle Running if pressing the VIEW button HINT The Sound Intensity icon wil...

Page 138: ...tkey the warnings are also indicated for the surface and total as shown in Figure 21 47 and 21 48 Warning panel When showing either simple view or advanced view the warnings may easily be investigated in detail Simply press INFO to toggle the warning panel The warnings are written out in clear text An example from the ISO 9614 2 standard is shown in Figure 21 49 Tapping any of the entries in the l...

Page 139: ...in intensity view The details of the functions are discussed on Voice and Text notes on page 64 In general notes voice recordings and pictures belong to the scope level If inside the surface scope the applied notes will belong to this scope Thus it is possible to find notes corresponding the complete measurement a surface or a segment later either on the instrument or in post processing software U...

Page 140: ...s annotation for convenience An H and V will appear on the segments when either of these scanning directions has been used Define a measurement surface as described in Defining a measurement surface on page 111 The standard specifies a minimum of four segments Thus only one segment within each surface element is sufficient for a cuboid surface However the standard also specifies that the total sur...

Page 141: ...esired some seconds of the measurement may also be removed by using the cursors on the displayed time graph before pressing the key once more to resume the measurement When the measurement is stopped the Simple View will be displayed and the instrument will allow either to accept the measurement using the key or discard the measurement using the key The measurement may be reviewed as normal while ...

Page 142: ...raph is presented for sound pressure and either sound intensity or sound power Warnings are indicated for each frequency band and the segment total Toggle between sound power and sound intensity using the FUNC key Press INFO to bring up the warning window Figure 21 53 and 21 54 shows the simple view for a segment with and without the warning panel Advanced view Three different graphs are presented...

Page 143: ...a segment in scope view if engineering mode is selected and only a single scan is performed In survey grade only a single scan is required A green frame indicates that the required number of scans has been performed for the segment Simple view A graph is presented for sound pressure along with either sound intensity or sound power Warnings are indicated for each frequency band and the complete sur...

Page 144: ... accuracy this implies two scans per segment while survey grade accuracy only requires a single scan per segment The surface will have a green frame when all segments are measured Simple view A spectrum is presented for sound pressure along with either sound intensity or sound power Warnings are indicated for each frequency band and the complete surface Toggle between sound power and sound intensi...

Page 145: ...rade of accuracy Warning indicators Dynamic capability too low Triggered if the FpI exceeds the dynamic capability for a frequency band FpI Ld Applies to FpI values in the total scope The warning may be avoided by a proper phase correction and avoiding measurements in highly reactive sound fields or extraneous noise Dynamic capability too low Issued if the FpI exceeds the dynamic capability for a ...

Page 146: ... the horizontal or vertical measurement time is less than 20 seconds for a segment Sound power using ISO 9614 1 The ISO 9614 1 standard differentiates from the ISO 9614 2 by using fixed measurement positions instead of the scanning procedure The standard allows measuring with accuracies Precision Engineering and Survey The following sections will discuss the setup measurement and review of sound p...

Page 147: ...eld indicators and for calculation of A C and Z The standard specifies that the frequency range must be set to 50 Hz to 6 3 kHz A warning will be given if the weighted sum frequency range is changed In certain cases it may make sense to use a wider or narrower range In these cases the user will need comment and consider the uncertainty and complience to the standard Excluded bands is a list of exc...

Page 148: ... active The active temporal variability reference will be provide the data for the F1 indicator in the total measurement and be the basis for any warnings or recommandations The actual measurement of temporal variability is discussed under Measuring on page 125 HINT The Nor150 will show the resulting temporal variability measurement time in the bottom of the measurement setup menu as seen in Figur...

Page 149: ...t and the extraneous noise Position the probe accordingly On the instrument navigate to the segment From Scope View double tap into the surface containing the segment Tap and hold the selected segment to bring up the context menu then select Temporal Variability Figure 21 64 shows menu A L t view will appear as shown in Figure 21 65 Press START STOP to start the measurement The measurement will ru...

Page 150: ...7 Regular spectrum view accessible by pressing VIEW Figure 21 66 Only five periods of data Press TABLE to show a numeric display Figure 21 69 Choose or view existing temporal variability measurements Figure 21 68 The F1 function is presented along with the F1Lim which is the limit set by ISO 9614 1 Figure 21 70 The active temporal variability measurement is shown in the menu ...

Page 151: ...w either to accept the measurement using the key or discard the measurement using the key The measurement may be reviewed as normal while waiting for accept The next section will describe how to review the results in detail HINT If an impulsive noise is encountered during a measurement press the key The measurement will be paused If desired some seconds of the measurement may also be removed by us...

Page 152: ...er Warnings are indicated for each frequency band and the segment total Toggle between sound power and sound intensity using the FUNC key Press INFO to bring up the warning window Figure 21 72 and 21 73 shows the simple view for a segment with and without the warning panel Tap the warnings or action codes to bring up the help information for the specific warning or action as show in Figure 21 74 a...

Page 153: ...Presents a graphical view of the measurement surface The A weighted value for the surface is displayed along with A weighted data for each individual segment Select the displayed function using the FUNC key Scope view is illustrated in Figure 21 80 If you press the INFO key in this view you will find information about the current segment and surface and their areas as shown in Figure 21 81 Simple ...

Page 154: ...The F3 F2 is equal to the one for Total Scope presented in Figure 21 81 Total scope The total scope presents the total data generated from the sum and average of individual segments NOTE The sound power levels are calculated based on the area defined for each of the measured segments The area resulting from the specified Surface Dimensions is strictly a guidance for defining the surfaces and segme...

Page 155: ... and the complete surface Toggle between sound power and sound intensity using the FUNC key Press INFO to bring up the warning window In total scope the warnings are summed and they display how many warnings there are for all segments The display is equal to simple view for a segment A summary is presented when the cursor is placed on A C or Z Figure 21 84 and 21 85 illustrates the concepts Figure...

Page 156: ...rated in Figure 21 88 The fourth group is F3 F2 F3 subtracted by F2 The display is illustrated in Figure 21 89 The fifth group is the field non uniformity indicator F4 and its requirement F4Lim The limits will update dynamically with the number of measured positions and selected accuracy The display is illustrated in Figure 21 90 The last group is the temporal variability indicator F1 and its limi...

Page 157: ...bility indicator calculated for temporal variability measurements Linear quantities F2 pressure intensity indicator Leq Ieq calculated for all scopes F3 negative partial power indicator calculated for all scopes F4 Field non uniformity indicator calculated for total scope Linear quantities Ld dynamic capability available for all scopes calculated based on probe verification and grade of accuracy W...

Page 158: ...the F3 F2 exceeds 3 dB for one or more bands Field not stationary Issued if the temporal variability indicator F1 exceeds 0 6 for a band Inadequate number of positions Issued if N C F2 where N is the number of positions and C is constant depedent on frequency and selected accuracy In practice the deviations from segment to segment is to large and more positions are needed to fulfill the requiremen...

Page 159: ...s menu figure 22 1 holds all the setup related to the peripherals power saving settings language clock etc Digital and Analog I O Figure 22 1 Instrument setup menu Figure 22 2 Digital and Analog I O menu In this menu Figure 22 2 you configure Analog and Digital outputs ...

Page 160: ... via another program Please note that Digital Output 4 will be disabled and greyed out if the analog output is enabled as shown in figure 22 2 See further description below Headset The headset output is optimised for listening purpose and not for instrumental purpose The analogue output found on the 15 pin I O connector is for instrumental purpose Discussed in the section below In the Headset menu...

Page 161: ...gging it when the instrument is powered may cause the system to permanently disable the software driver for the dongle Especially if the dongle is unplugged the first 10 seconds after the dongle is connected This is the time it takes to initialise the dongle However it is not limited to that each time the dongle scans the network it is a possible change to permanently disable the driver if the don...

Page 162: ...ake full control of the Nor150 from an external device such as a PC pad or smartphone You should configure password to protect the unit from unauthorised use Admin Password Password for Administrator If this is given you need to log in with correct password to start stop configure measurement Figure 22 5 NorRemote measurement picture with marker setting menu Guest Password The guest user may see t...

Page 163: ...n the NorCloud service is activated in the Nor150 it will start a measurement as soon as it is logged on and assigned to a project The measurement display is replaced by an information panel telling you the status of the connection to NorCloud Figure 22 6 You may revert back to the normal measurement display by pushing the cancel button The instrument will however return to the NorCloud display 20...

Page 164: ...ything is correct in NorCloud you can use the Reconnect Now button to force the instrument to connect again Communication with the server is OK but the instrument waiting for new configuration from NorCloud Figure 22 8 No communication with the server specified Check the server address in the Communication NorCloud menu in the instrument Use the Reconnect Now button to force the instrument to conn...

Page 165: ...rt an easy way to take a snap shot of the Nor150 screen without using a snipping tool or similar NorVirtual is a freeware and can be downloaded from www norsonic com downloads Connection to your smartphone Download NorVirtual app from Gogle Play or App Store depending on phone type NorVirtual app allows the user to remote control the Nor150 The app is an image of the display and keyboard of the in...

Page 166: ... pictures and making voice comments to attach to the measurement These can be activated using icons at the bottom of the keyboard Be aware that pictures taken with the phone cannot be viewed in the instrument but can be viewed in NorConnect and NorReview Limitations The response when clicking and scrolling is slightly slower than using the instrument directly The latency depends on the connection ...

Page 167: ...be challenging if the measurement points are physically separated from each other Typical applications are structure born noise or vibrations in buildings or measurements of noise propagation from blasts or other impulsive noise The Nor150 has a special synchronization feature allowing several Nor150 to be synchronized It is basically separated in two levels of accuracy Synchronized real time cloc...

Page 168: ...eep the cable connection to take advantage of the high accuracy of 1 48000 sec during all measurement you must keep the slave settings on the instruments during your measurement session Remember to set back the slave instruments to normal before removing the cables It is two additional function buttons in this menu Figure 22 14 Simultan RTC sampling This is a control button With this button you ma...

Page 169: ...ons on download site supersede the information given below Copy the application and service pack onto a USB memory stick The term service pack is the name for all files belonging to the update of the operating system Connect the USB stick to the Nor150 USB port while the instrument is turned off Turn on the instrument The Instrument will find that a new software version is available and ask you to...

Page 170: ...memory stick The license code is set in a text file named License txt Connect the memory stick to the USB port on the Nor150 Install the new license code in SETUP Instrument About License enter license NOTE Only the license code string shall be copied to the memory stick Not the associated text that normally follows the license Use Notepad or similar simple text editors to copy the license string ...

Page 171: ...our own reports based on Excel templates NorVirtual is a program that creates a copy of the Nor150 including live update of the screen on your PC smartphone or tablet This feature is especial useful for seminars etc It may also be used to remote control the instrument in a simple and easy way since it is a 1 1 copy of the instrument screen Connecting to your PC The use of the program is simple Jus...

Page 172: ... response of a sound level meter Firmware version The specifications in this manual are valid for a Nor150 with software version 3 0 and above The version number can be found using the SETUP Instrument About key sequence The Nor150 may also be supplied with the prepolarized version of the Nor1225 the Nor1227 The specifications listed in this chapter are the same for both microphone types except th...

Page 173: ...th a microphone sensitivity of 50 mV Pa Extended range With the optional extension permitting high measurement range peak values up to 150 dB may be measured Microphone input socket outside view Pin Function 1 Microphone system check signal input Channel 2 in Sound Intensity mode when Nor1290 and some other probes is selected 2 GND signal reference 3 Polarization voltage selectable 0 1V 200 1V or ...

Page 174: ...Microphone type Free field microphone Frequency range 2 dB 3 5 Hz to 20 kHz Dynamic range lower limit 17 dB A Dynamic range upper limit 141 dB Open circuit sensitivity 250 Hz 2 dB 26 dB rel 1 V Pa 50 mV Pa IEC 61094 Compliance WS2F Typical cartridge capacity 18 pF Microphone venting Rear Resonance frequency 14 kHz Temperature range operation 40 to 85 C Temperature coefficient 250 Hz 0 01 dB C Stat...

Page 175: ...hone as well as the complete signal chain from the microphone cartridge to the sound level meter may be checked The voltage gain of the preamplifier is very close to one or correspondingly 0 dB As the input impedance is 10 GΩ the attenuation due to loading of the source will mainly be determined by the low input capacitance Nor1209 Technical Specifications Frequency response 18 pF small signal 20 ...

Page 176: ...set limits for the maximum slew rate for the signal The figure below shows the maximum level as function of cable length and frequency 20 kHz corresponds to the bandwidth of the microphone system with the normal microphone Nor1225 or Nor1227 140 130 120 110 100 90 10 m 50 m 100 m 20 m 200 m 500 m 20 kHz 10 kHz 5 kHz dB Cable length 120 pF m Level Acoustical data Acoustical data for Nor1225 and Nor...

Page 177: ...0 05 250 251 2 0 00 0 00 0 05 0 03 0 05 0 02 0 00 0 05 315 316 2 0 01 0 00 0 06 0 06 0 10 0 03 0 01 0 10 400 398 1 0 03 0 01 0 06 0 10 0 10 0 03 0 00 0 10 500 501 2 0 03 0 01 0 07 0 12 0 10 0 06 0 01 0 10 630 631 0 0 02 0 04 0 07 0 04 0 10 0 08 0 01 0 10 800 794 3 0 01 0 05 0 07 0 08 0 10 0 11 0 00 0 10 1 k 1000 0 0 01 0 07 0 08 0 14 0 10 0 16 0 00 0 10 1059 3 0 01 0 09 0 09 0 23 0 10 0 17 0 00 0 ...

Page 178: ... 64 0 16 0 14 0 10 0 82 0 34 0 30 3 15 k 3162 3 0 13 0 68 0 16 0 00 0 10 0 89 0 40 0 30 3349 7 0 14 0 77 0 16 0 19 0 10 0 88 0 41 0 30 3548 1 0 15 0 87 0 16 0 06 0 10 0 88 0 42 0 30 3758 4 0 18 0 96 0 16 0 17 0 10 0 87 0 43 0 30 4 k 3981 1 0 18 1 05 0 16 0 11 0 10 0 80 0 39 0 30 4217 0 0 18 1 15 0 17 0 15 0 10 0 74 0 36 0 40 4466 8 0 17 1 25 0 17 0 02 0 10 0 63 0 29 0 40 4731 5 0 17 1 39 0 17 0 34...

Page 179: ...0 75 0 21 0 50 14125 4 0 78 7 48 0 38 0 18 0 40 0 81 0 20 0 50 14962 4 0 87 7 93 0 38 0 03 0 40 1 05 0 01 0 50 16 k 15848 9 0 90 8 39 0 29 0 16 0 40 1 22 0 11 0 50 16788 0 0 79 8 78 0 34 0 25 0 40 1 33 0 18 0 60 17782 8 0 58 9 17 0 34 0 07 0 40 1 41 0 22 0 60 18836 5 0 14 9 59 0 34 0 15 0 40 1 62 0 40 0 60 20 k 19952 6 0 40 10 01 0 29 0 10 0 40 1 65 0 40 0 60 Typical free field microphone response...

Page 180: ...struments of the same model measured at reference conditions Windscreen correction A Correction to be added to the free field response of the standard microphone without windscreen to obtain the free field response of the microphone when the microphone is equipped with windscreen type Nor1451 and the windscreen correction in the instrument is switched OFF The corresponding expanded uncertainty 95 ...

Page 181: ...te value of the difference between displayed sound levels at any two sound incidence angles within ө degrees from reference direction 100 θ 30º 1 k 10 k 100 k dB Frequency Hz 0 1 2 3 4 100 θ 90º 1 k 10 k 100 k dB Frequency Hz 0 5 10 15 100 θ 150º 1 k 10 k 100 k dB Frequency Hz 0 5 10 15 ...

Page 182: ... 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 4 kHz 5 kHz 6 3 kHz 8 kHz ϕ 5 dB 5 dB 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 1 6 kHz 2 kHz 2 5 kHz 3 15 kHz ϕ 5 dB 5 dB 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 ...

Page 183: ...mplete instrument is measured in the horizontal direction sideways with the display facing upwards Zero degrees are in the direction of the microphone 100 θ 30º 1 k 10 k 100 k dB Frequency Hz 0 1 2 3 4 100 θ 90º 1 k 10 k 100 k dB Frequency Hz 0 5 10 15 100 θ 150º 1 k 10 k 100 k dB Frequency Hz 0 5 10 15 ...

Page 184: ... 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 4 kHz 5 kHz 6 3 kHz 8 kHz ϕ 5 dB 5 dB 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 1 6 kHz 2 kHz 2 5 kHz 3 15 kHz ϕ 5 dB 5 dB 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 ...

Page 185: ...plots below show the directional response for the complete sound level meter Nor150 with preamplifier Nor1209 microphone Nor1225 and windscreen Nor1451 100 0 1 2 3 4 θ 30º 1 k 10 k 100 k dB Frequency Hz 0 5 10 15 100 1 k 10 k 100 k Frequency Hz θ 90º dB 0 5 10 15 100 1 k 10 k 100 k Frequency Hz θ 150º dB ...

Page 186: ... 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 4 kHz 5 kHz 6 3 kHz 8 kHz ϕ 5 dB 5 dB 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 1 6 kHz 2 kHz 2 5 kHz 3 15 kHz ϕ 5 dB 5 dB 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 ...

Page 187: ...lots below show the directional response for the complete sound level meter Nor150 with preamplifier Nor1209 microphone Nor1225 and windscreen Nor1451 100 θ 30º 1 k 10 k 100 k dB Frequency Hz 0 1 2 3 4 100 1 k 10 k 100 k Frequency Hz θ 90º dB 0 5 10 15 100 1 k 10 k 100 k Frequency Hz θ 150º dB 0 5 10 15 ...

Page 188: ... 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 4 kHz 5 kHz 6 3 kHz 8 kHz ϕ 5 dB 5 dB 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 1 6 kHz 2 kHz 2 5 kHz 3 15 kHz ϕ 5 dB 5 dB 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 ...

Page 189: ...sing filter is a combination of an analog and a digital filter Frequency weightings Weighting networks The Nor150 simultaneously measure the three weighting networks A C and Z These networks are designed as described in the IEC 61672 1 The lower frequency limit of the Z weighting is only restricted by the high pass filter in the input section which means that when this filter is off the frequency ...

Page 190: ... weighting networks Low level indication is only available in the SLM picture and its corresponding numerical table When a level is detected that is lower than the set threshold the numerical value will be indicated with a sign in front of it Selectable range for Low Level Indication The selectable range of low level values goes from 30 dB to 40 dB in full dB steps A separate menu in Transducer se...

Page 191: ...pped with a statistical level distribution function Up to eight percentiles can be shown numerically in a table All of them are freely selectable The class width is 0 2 dB over the entire 130 dB range The statistical distribution calculation applies to all the spectral weighting networks A C and Z as well as all the individual filter bands octaves or third octaves if they are measured The selectab...

Page 192: ...ment allows microphones with sensitivity in the range 84 dB to 15 9 dB relative to 1 volt Pascal to be applied The corresponding display range for the indicated sound level is 50 dB to 180 dB Self noise levels The self noise is measured with the calibration set to 26 0 dB corresponding to a microphone sensitivity of 50 mV Pa For voltage input the level 0 dB then corresponds to 1µV Z network consid...

Page 193: ...l measurement The total time for a measurement may be set from 1 second up to 7 days 200 hours less 1 second with 1 second resolution Timing accuracy The measurement duration and resolution is locked to the extremely accurate internal clock Within the temperature range 0 ºC to 40 ºC the maximum drift is 3 ppm corresponding to an accuracy of better than 10 seconds per month Aging for 10 years may i...

Page 194: ...ls will normally indicate Under scale The primary indicator range for compliance with IEC 60651 type 1 is 24 dB to 117 dB For compliance with IEC 60804 type 1 the linearity range is 24 dB to 137 dB and the pulse range 24 dB to 140 dB respectively Total range for measurement of C weighted levels The linear operating range is identical to the total range Frequency 31 5 Hz 1 kHz 4 kHz 8 kHz 12 5 kHz ...

Page 195: ...r1225 is 50 mV Pa so the reference level shall be indicated with an input voltage level of 500 mV 3 dB Maximum allowed input signal for this purpose is 10 V rms that is equivalent to 140 dB SPL Power supply After the instrument is turned on it takes some time to boot up correctly In addition to this all electronic parts especially the 200 V polarization voltage need some time to stabilize properly...

Page 196: ...itch off if the battery or external voltage is too low for operation within the stated specifications The Nor150 can be used on external voltage without the battery installed Nominal input voltage 13 2 V Low cutoff voltage 10 V High input voltage 28 V The maximum power consumption is below 15 W Mains adapter Nor345A The Nor150 is delivered with a mains adapter This adapter can be fitted with conne...

Page 197: ...performed will still be within the specifications of a type 1 sound level meter The wind screen correction data and uncertainties are shown in the table page 161 High Levels For Nor1225 which is a microphone that require 200 V polarization voltage the sensitivity can be reduced by approximately 10 dB by lowering this polarization voltage The level range can therefore be extended without changing t...

Page 198: ...put control line 2 DO 2 Out General digital output control line 3 DO 3 Out General digital output control line 4 RTS Out RS232 Request To Send 5 TXD Out RS232 Transmit data 6 PWR Out 3 3V Max 100 mA 7 RES In Instrument reset 0 Reset 8 DI 1 In External trigger input 9 DI 2 In General digital input control line 10 DI 3 In General digital input control line 11 AC out DO 4 Out AC signal output or digi...

Page 199: ...10 kΩ connected to the positive supply 3 3 volt Any open input will therefore be in the high state Digital outputs signals are 3 3 V CMOS signals Maximum output impedance 100 Ω During power up the output lines will be low or in a high impedance state 100 kΩ to ground Digital output control lines The Nor150 instrument has 4 general digital output lines which all can be used to alarm and control ext...

Page 200: ...mV Output impedance Less than 10 ohm AC coupled 100 mF Gain accuracy 1 kHz 0 2 dB Frequency response re 1 kHz 0 5 dB for 20 Hz to16 kHz LAN interface This is the preferred way of communication with the instrument The IP address is found in the SETUP Instrument Communication menu and the port number is set to 8501 The easy way is to set the Nor150 to automatically receive its IP address from the ne...

Page 201: ...environmental conditions do not change that rapidly in a room or during a measurement that this causes any problem for the sound level analyser But when the Nor150 is brought from one room to another or from outdoor to indoor the changes in the temperature and humidity can be so large that special precautions should be taken Condensation in the microphone may destroy it permanently Excessive conde...

Page 202: ...he IEC 61672 The deviation of the measured sound level due to the standardized test radio frequency field is less than 1 3 dB The most sensitive setup is when the Nor150 is connected via an extension cable Nor1208 50 to the preamplifier Nor1209 and microphone Nor1225 In addition a mains power Nor345A and a 3 meter LAN cable shall also be connected The instrument and cables are lying on a table wit...

Page 203: ...is constructed to have high immunity towards electrostatic discharge as required in the sound level meter standard It will operate normally when exposed to a contact discharge of 4 kV or an air discharge of 8 kV If an even more powerful electrostatic pulse reaches the instrument it might restart After this the instrument if not destroyed will go through a normal start up sequence and continue oper...

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Page 207: ...Level 96 B BA 75 back erase 5 Background noise 75 76 Background noise Duration 80 Background noise measurements 86 Battery lifetime 9 Battery lov 7 Battery Low 7 BGN 75 78 BGN Corrections 83 Bind Network or Frequency 32 Building Acoustic 75 C Calibration 40 Calibration history 37 CCLD 39 CCP 39 Channel 31 Clock Trigger 51 Collapsed view 89 Colour 32 Communication 145 Context sensitive 23 Context s...

Page 208: ...T 186 FFT On Off 45 File name 69 Filter 45 80 Follow cursor 32 Free cursor 24 Frequency settings 44 Frequency weightings 186 FUNC button 5 23 Function 32 Functions 46 G Global and Profile Time 44 Global measurement values 16 Global Time 44 Global Trigger 50 Go To 24 H Headset 8 144 High pass input filter 171 Hold function 67 I ICP 39 IEPE 39 Impact 75 Impact 81 Impact Sound Insulation calculations...

Page 209: ...187 L t Wide 28 M Manage Setup files 70 Manual 46 Manual Trigger 51 Marker 26 Max Action Time 55 Max expected RT 81 Maximize your battery power 10 Measurement 26 Measurement duration 190 measurement functions 14 Measurement mode 76 Measurement ranges 191 Measurement resolution 190 Measurement Setup 44 84 Measurement Setup Menu 44 Memory 26 Memory Organising Menu 68 Mic Check 41 Mic Check 197 Micro...

Page 210: ...y RT function 81 Profile A 16 44 Profile B 16 44 Profile Moving 16 44 Profile Time 44 Project Mode 76 88 R Random incident 35 Rating 79 Rating menu 81 Receiving 82 Recording the sound 59 Ref curve 83 Reference Tone 150 Rename 71 Repeat 47 Report 31 89 resuming 66 Reverberation 75 reverberation time 75 Reverberation time 76 Reverberation Time calculations 75 Reverberation time measurements 87 room ...

Page 211: ...pecimen 83 Text notes 64 Threshold type 54 Time Between events 55 time profile 16 Time Span 55 Time synchronizing several Nor145 151 Time Weightings 44 TMAX5 14 touch sensitive display 4 Touch sensitive screen 5 Transducers 36 Trigged at 80 Trigger 26 Trigger function 54 U units 49 user defined setup 73 V Verification Date 37 Verification Date 37 Verification Interval 37 Verification Laboratory 37...

Page 212: ...s Test Result Item STANDARD Result T1 Altitude simulation T1 Pass T2 Thermal test T2 Pass T3 Vibration T3 Pass T4 Shock T4 Pass T5 External short circuit T5 Pass T6 Impact Crush T6 N A T7 Overcharge T7 Pass T8 Forced discharge T8 N A Approved by Edited by Date 11 5 2018 Checked by ...

Page 213: ...22 F to 50 C 122 F Room temperature is recommended for long time storage Always fully charge the batteries before storage Recharge batteries fully every third month for long time storage Never use mechanical damaged batteries Shipment of batteries via air or brought as hand luggage luggage are governed by IATA UN3481 PI 967 section II when shipped as a part of the instrument and PI 966 part II if ...

Page 214: ...198 Appendix C Declaration of Conformity ...

Page 215: ...mative documents Standards EN IEC 61672 1 2013 Class 1 EN IEC 61260 class 1 2014 EN IEC 61043 1993 ANSI S1 4 2014 type 1 ANSI S1 43 1997 type 1 ANSI S1 11 2004 type 1 Safety EN 61010 1 2010 Portable equipment and pollution category 2 RoHS Directive 2011 65 EU WEEE Directive 2012 19 EU This product has been manufactured in compliance with the provisions of the relevant internal Norsonic production ...

Page 216: ...rom sound calibrators microphones and preamplifiers via small handheld sound level meters to advanced yet portable real time analysers but also spectrum shapers building acoustics analysers and complete community industry and airport noise monitoring systems Contact your local representative or the factory for information on our complete range of instrumentation ...

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