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B&K 2250 Light, User Manual

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B&K 2250 Light User Manual Download Page 137

127

Chapter 14

Specifications

This chapter comprises the specifications that are needed for evaluation of instrument
performance characteristics and proper use of the instrument. Some of the applicable sound
level meter standards require additional technical documentation, in particular for pattern
evaluation (type approval) purposes, but have no bearing on normal use. The additional
technical documentation is given in a separate Brüel & Kjær manual.

Summary of Contents for 2250 Light

Page 1: ...t With Sound Level Meter Software BZ 7130 1 1 oct Frequency Analysis Software BZ 7131 1 3 oct Frequency Analysis Software BZ 7132 Logging Software BZ 7133 Signal Recording Option BZ 7226 and Tone Asse...

Page 2: ......

Page 3: ...Level Meter Software BZ 7130 1 1 oct Frequency Analysis Software BZ 7131 1 3 oct Frequency Analysis Software BZ 7132 Logging Software BZ 7133 Signal Recording Option BZ 7226 Tone Assessment Option BZ...

Page 4: ...Symbols The apparatus will be marked with this symbol when it is important that you refer to the associated warning statements given in the manual Protective Earth Terminal Hazardous Voltage Explosio...

Page 5: ...the First Time 12 Making Good Measurements 12 Alternative Measurement Method Extended Microphone 13 Measuring for Convenience 14 CHAPTER 3 Making Your First Measurement 15 3 1 Point and Shoot 15 Congr...

Page 6: ...Theory of CIC 45 Performing a Manual CIC with your 2250 Light 46 CHAPTER 6 Data Management 49 6 1 Organising Measurements 49 Description of Jobs and Projects 49 Navigating in Jobs 50 6 2 Selecting De...

Page 7: ...e Upgrade Applications and Install New Languages 79 Update Upgrade using BZ 5503 79 Update Through the Internet 80 Downgrade to an Earlier Version 82 9 3 Troubleshooting 82 2250 Light Measurements 82...

Page 8: ...alyzer 110 Controlling the Recording 111 Control Recording using the Stylus 112 Playing the Recording 113 Signal Recordings on the PC 114 CHAPTER 13 Tone Assessment Option BZ 7231 1 3 octave Method 11...

Page 9: ...red Parameters available at any time 155 Processed Parameters for Display Only 155 Relationship Between Setup and Measurement Parameters 156 APPENDIX C Instrument Parameters 159 C 1 Current Transducer...

Page 10: ......

Page 11: ...ome practical hints and guidelines are provided including all relevant technical specifications Finally a glossary is added to help with specific terminology found in this manual 1 2 How to Use this M...

Page 12: ...stic Measurement Equipment The manual is designed so that you do not have to read all of it to be able to use the instrument It is built around the most frequently used operations these are as follows...

Page 13: ...troduction of hardware version 4 also known as G4 To check if your analyzer uses G4 hardware click in the Shortcut Bar at the bottom of the display screen and select About The About menu will list the...

Page 14: ...nts Fig 2 1 Instrument components 1 Measurement Microphone A Br el Kj r Prepolarized Free field Microphone is used A robust and reliable microphone with a wide frequency range 2 Preamplifier Used to c...

Page 15: ...LEDs referred to as the Traffic Light either side of the Start Pause pushbutton indicate important states of the instrument during operation that is measurement stopped paused or running See Chapter 4...

Page 16: ...drill holes in the plastic cover giving access to the main connectors underneath so you can fit the cover while power is connected for example 21 High Speed USB and LAN Interfaces hardware version 4...

Page 17: ...to save data Hardware Version 4 Fig 2 3 Connector panel of 2250 Light for hardware version 4 1 Micro USB Interface Socket Use the supplied Micro USB Cable AO 1494 to connect 2 Earphone Socket Use the...

Page 18: ...le AO 1476 Hardware version 4 G4 Use the supplied Micro USB Cable AO 1494 Connect to a Printer or External Device via USB For hardware versions 1 3 use the supplied Adaptor AO 0657 to connect to a pri...

Page 19: ...battery is completely charged and blue to indicate that the unit is in stand by and battery powered Reset Button See item 5 in Fig 2 2 and Fig 2 3 Located above the USB connector it is used to reset...

Page 20: ...nput See details in Appendix A Note Signal recording requires a license for the BZ 7226 option LAN Socket With hardware version 4 only see item 11 in Fig 2 3 The LAN Socket provides high speed direct...

Page 21: ...held Analyzer UA 0587 Tripod or UA 0801 AO 0697 D 030 Microphone Ext Cable 3 m AO 0697 D 100 Microphone Ext Cable 10 m 060195 6 UL 1009 Industrial Grade SD Memory Card for Hand held Analyzer 2250 L Ha...

Page 22: ...ovided in section 2 5 3 for situations where you need to position the microphone at a distance from 2250 Light while still complying with the standard Placing the Measurement Microphone The measuremen...

Page 23: ...s in step 4 2 Screw the Extension Stem UA 1651 into the 2250 Light using the threaded socket situated on the underside of 2250 Light at the back see item 18 in Fig 2 1 3 Set Small Tripod UA 0801 inclu...

Page 24: ...extension cable into the top socket of the Hand held Analyzer see item 17 in Fig 2 1 and push gently until it snaps into position Mounting the Measurement Microphone on the Microphone Holder and Tripo...

Page 25: ...5 1 3 1 Point and Shoot Using the following basic procedure you will be able to start using your Hand held Analyzer immediately to make measurements and start the familiarisation process 1 Switch on b...

Page 26: ...ware Logging Project Template included in BZ 7133 software Note 1 Signal Recording Option BZ 7226 does not contain a specific template signal recording options are available in all templates Note 2 To...

Page 27: ...of the screen to reveal a drop down list and select SOUND LEVEL METER from the list see Fig 3 2 Fig 3 2 Changing the project template 2 Tap on Measurement Mode in the view area and set to Manual see F...

Page 28: ...he Start Pause pushbutton and during the measurement if everything is OK Yellow status indicator flashing every 5 s when you have stopped saved the measure ment and are ready to do another measurement...

Page 29: ...LAF readout with associated bar graph and four measurement parameters followed by two measurement setup parameters The first parameter is displayed in a larger font size for better readability see Fi...

Page 30: ...ightings then on the weighting parameter field on the right hand side of the screen A weighting drop down menu will appear see Fig 3 6 Change the parameters as required Fig 3 6 Changing the broadband...

Page 31: ...urement Check that the data path at the top of the screen displays JOB 01 Project 001 and save your measurement by pressing the Save pushbutton For more details refer to section 6 1 Note An asterisk w...

Page 32: ...rs as necessary Fig 3 9 The Data Viewer 3 When finished tap to return to Explorer and to return to the measurement screen 3 4 Documenting your Measurement You can attach a note with the GPS position r...

Page 33: ...sition in the GPS note The GPS note is headlined Position and includes the latitude and longitude For manual entries please enter the latitude and longitude in one of the following formats Degrees DD...

Page 34: ...by pressing If held in for 1 second the instrument goes into standby mode if held in for more than 4 seconds it switches the instrument off The instrument will automatically switch off when it has be...

Page 35: ...mbles the human ear s response at medium range levels It is the weighting required for nearly all environmental and workplace noise measurements and is specified in international and national standard...

Page 36: ...Level Meter Software for 2250 Light BZ 7130 it is a Class 1 modular precision integrating averaging sound level analyzer with an easy to use interface for quick and simple measurement setups 4 2 1 So...

Page 37: ...re modules are covered in this manual 1 1 octave Frequency Analysis Software for 2250 Light BZ 7131 This software module allows real time frequency measurements in 1 1 octave bands making it a simple...

Page 38: ...nd licenses together with information about the hardware This information is always available and is accessed by selecting About from the top of the display 4 3 What is Measurement Partner Suite BZ 55...

Page 39: ...ing 2250 Light 4 4 1 Navigation Principles Star Navigation Concept The main principle is that all the main menus are accessible via a single tap of the stylus The Main Menu icon forms the centre of th...

Page 40: ...4 4 6 The Full tab at the bottom of the screen allows you to view the complete list of setup parameters while the Quick tab allows you to access the more frequently used parameters When you have finis...

Page 41: ...allows you to perform and monitor the calibration while the Details tab allows you to view the details of the calibration and the calibrator that are being used to calibrate the instrument While you a...

Page 42: ...ettings in the current template Status Field The area just below the Project Template bar is called the Status field Depending on the template this field displays status information using up to three...

Page 43: ...Changes made to the screens will only be applied temporarily that is until you select another project template or open another project to re use the screen from that project However if you want the s...

Page 44: ...screen settings and setup information and the calibration documentation Pressing Save will affect the pause and running states In both cases the measurement state will be stopped shortly after pressi...

Page 45: ...he measurement situation For instance if the amount of noise generated by the instrument needs to be kept to an absolute minimum consider using the pushbuttons rather than the stylus this is because t...

Page 46: ...to activate it Use the left arrow to cancel the selection Number Keyboard When activating a number a number keyboard appears see Fig 4 4 Fig 4 4 Number keyboard Tap on the digits or use up arrow down...

Page 47: ...el You can lock your settings to prevent accidental changes by tapping on the padlock icon on top of the screen To unlock tap on the padlock icon again 4 4 7 Locking the Pushbuttons and Display The pu...

Page 48: ...38 2250 Light User Manual...

Page 49: ...alibration Types Acoustic Calibration Acoustic calibration is the preferred calibration method particularly when standards and regulations require calibration before a measurement The method involves...

Page 50: ...oud sound sources that may interfere with the calibrator s signal 2 Switch on 2250 Light by pressing 3 Tap on the Main Menu icon and select Calibration from the list of options A screen similar to tha...

Page 51: ...libration then the calibration is stopped without changing the calibration of the instrument The traffic light will indicate a fast flashing red and an error description will appear in the status fiel...

Page 52: ...g enables the calibration process to automatically detect the calibration level For free field types of microphones like Type 4950 the calibration level from a Type 4231 calibrator is either 93 85 dB...

Page 53: ...by tapping the Main Menu icon and choosing Transducers from the list of options The screen shown in Fig 5 4 will appear Fig 5 4 Transducer screen 2 Tap on the transducer name number or select the plu...

Page 54: ...calculations when calibrating using Sound Calibrator Type 4231 Calibrator to determine whether the level is 94 or 114 dB In the top line of the status field you can select which transducer is current...

Page 55: ...njection Calibration CIC facility This is done automatically during a logging measurement see section 11 2 Unlike an internal calibration the Br el Kj r patented CIC technique enables a complete measu...

Page 56: ...results of the latest manual CIC together with the reference see Fig 5 9 The status field at the top of the screen informs you how to perform the CIC Press the Start CIC button to start the CIC After...

Page 57: ...bration tab The result of the Charge Injection Calibration consists of four parameters CIC Ratio CIC Ratio Date Deviation from Reference CIC Result The CIC Result can be either Passed Background noise...

Page 58: ...48 2250 Light User Manual...

Page 59: ...S data Measurement Setup Display Setup parameters you have selected Information on the microphone Calibration Signal Recordings attached to measurements as required The Project name is automatically c...

Page 60: ...obs and then some projects which have not been stored under a job name The topmost line in the status area Internal Disk in the example in Fig 6 1 shows the location in the memory The next line in the...

Page 61: ...do as described above but use Copy instead of Cut from the drop down list Select Delete from the drop down list in order to delete the job project and all of its contents You can select more than one...

Page 62: ...ed at the top of the Viewer along with two buttons and These are used to view results on the previous or next project in the job folder For Sound Level Meter and Frequency Analysis data the line below...

Page 63: ...ject name and select Open from the drop down that appears This will stop and reset the current measurement and load the project including all setups and data You are now using the same screens as the...

Page 64: ...e recording using the headphone output Note You can also rename or delete annotations or copy or move annotations to other projects The Text icon represents a GPS note Tap the annotation name and sele...

Page 65: ...lable for connecting to the analyzer USB BZ 5503 connects to the analyzer through a USB cable Network The analyzer is connected to a network local or Internet via a modem LAN cable or a wireless LAN a...

Page 66: ...ection 8 2 BZ 5503 Internet Browser or Mobile Phone with Internet Browser Network GPRS EDGE H SPA modem Modem GPRS EDGE HSPA Dialup Settings in Dialup Networking Network Settings Possibly settings in...

Page 67: ...artner Suite for data analysis and post processing For example data in the archives can be post processed directly in the Logging Module BZ 5503 A or Spectrum Module BZ 5503 B Furthermore data can be...

Page 68: ...o Analyzer When you enter the IP address or Hostname of the analyzer see section 8 2 and 8 3 in the address or location bar of the Internet browser the following screen appears Fig 7 1 2250 home page...

Page 69: ...display or setup parameters or start and stop measurements etc Fig 7 3 On line display for monitoring only The instrument can be viewed by several people at the same time however the instrument respon...

Page 70: ...creen has the same functions as the instrument s keyboard Click on the display with the cursor to control the instrument as you do when tapping on the screen of the instrument Fig 7 4 On line display...

Page 71: ...orage settings These parameters are grouped together under Preferences You access preferences by tapping on the Main Menu icon and selecting Preferences from the list of options The screen shown in Fi...

Page 72: ...tment Finally you can change the number of decimal places on your dB results readout tap on Number of Decimal Places and set to either 1 or 2 decimal places as required This setting is for display onl...

Page 73: ...mum For hardware versions 1 3 this state will hold for the time specified in the Turn off Backlight parameter if still left unused If the analyzer has been left unused for the time specified in the Ba...

Page 74: ...when external power is applied or the battery is just charged For unattended externally powered measurements when not using timers it is recommended to select the Switch On and Charge to ensure measu...

Page 75: ...al Settings or on the minus icon to collapse the list 8 1 4 Storage Settings Each time you save the results of a measurement 2250 Light suggests a project name and number for the project The Project N...

Page 76: ...In hardware version 4 while playing back an annotation you can use the Up Down navigation keys to increase decrease the gain of the annotation Note 3 If you do not want to listen to the input signal...

Page 77: ...Connection to the Network using a LAN Modem Using a 3G modem with LAN interface is a simple and very reliable and powerful way of remotely connecting to the analyzer Set up the modem according to its...

Page 78: ...2 3 Modems with USB Interface The following modems have been tested Airlink Fastrack Xtend GPRS EDGE and HSPA from Sierra Wireless www sierrawireless com Modems with an USB interface can be connected...

Page 79: ...wever for a GPRS EDGE HSPA or even a DSL router then often the global IP address is renewed at each new connection or at certain time intervals e g every two weeks In this case you will have to change...

Page 80: ...st Configuration Protocol Server on the network assigns automatically an IP address to the analyzer when connected to the network This is the most common way of setting up IP addresses Using Link loca...

Page 81: ...the on line display Note The location parameter is useful for both USB and LAN connections Network Connection Hardware versions 1 3 None default CF Socket Select this to use an Ethernet CF Card insert...

Page 82: ...ble Networks Tap on the line to get a list of available networks Tap on a name in the list to connect to this network The name is inserted in the Name line above this line Each network name is precede...

Page 83: ...boots Indicates start from a timer or a power failure or unexpected behaviour Measurement State When a measurement starts or stops Indicates measurement finished or unexpected behaviour CIC When Charg...

Page 84: ...phone numbers for sending the SMS notification to two recipients Set Notification to SMS and a notification will be sent by SMS to the active phone numbers when any of the alarm conditions are met or...

Page 85: ...onditions are met You can test the system by tapping on the Main Menu icon and selecting Send Notification via E mail Example of e mail Subject E mail from 2479719 Abbey Road Test Manual e mail Test M...

Page 86: ...or measurement of wind speed and wind direction Weather Station MM 0256 for measurement of wind speed wind direction ambient temperature ambient pressure relative humidity and liquid precipitation Ple...

Page 87: ...ta is saved in a project a GPS note is automatically created as an annotation with the GPS information See more details on GPS notes in section 3 4 8 7 Timers and Automatic Measurements Automatic cont...

Page 88: ...ement Note Reverberation Time templates are not available for timer control Start Time Set the start time at least 3 minutes ahead of current time Preset Time Set the preset time for the measurement r...

Page 89: ...ded with the BZ 5503 software for instructions on how to install a license Tap on the Help icon on the instrument s screen then select About to get a list of installed software and licenses 9 2 How to...

Page 90: ...on the Help icon on the instrument s screen then select About to get a list of installed software and licenses Scroll down to the bottom of the screen and tap on the Check for updates on the web link...

Page 91: ...g on the Help icon on the instrument s screen then select About To continue the measurement press the Start pushbutton Note If you have set up your instrument for e mail notifications see section 8 4...

Page 92: ...tapping the Main Menu icon then Transducers Check that the Sound Field and Windscreen Correction parameters have been set correctly These are found by tapping the Main Menu icon then Setup followed by...

Page 93: ...ce 7 Select Format to start the formatting procedure WARNING All data on the device will be erased during the formatting process WARNING Do not remove the device or switch off the instrument during th...

Page 94: ...omes so low that the instrument switches itself off Charge the battery fully at least 10 hours Connect the Mains Power Supply ZG 0426 or ZG 0429 to the instrument Switch the instrument on and leave it...

Page 95: ...reset the analyzer to a default state where the user is set to 2250 Light and the project template is set to Sound Level Meter The existing Sound Level Meter project template will be overwritten as wi...

Page 96: ...ith hardware version 4 G4 the analyzer contains two sets of the firmware software package and settings The one originally delivered with the analyzer and one installed afterwards To restore the factor...

Page 97: ...rk normally after performing the Reset to Default Settings procedure then the software might need to be re installed This can be done in two ways 1 If the connection to Measurement Partner Suite BZ 55...

Page 98: ...n together with the new instrument 9 4 3 Regular Recalibration To fulfil requirements for public measurements and to minimise the cost of errors due to faulty or inaccurate measurements we can arrange...

Page 99: ...ibration measurement instrument training and application training are a few examples of what local training or consultancy hoursa can do for you To find out more about training and consultancy hours p...

Page 100: ...al 9 5 3 Storing the Instrument Keep the sound level meter in a dry place preferably within its carrying pouch For long term storage remove the battery pack Do not exceed storage temperature limits of...

Page 101: ...Menu is accessed from the built in help tap on the shortcut bar then select About See Chapter 9 for instructions on installing the license for the frequency analyzer 10 1 Setting up the Instrument Th...

Page 102: ...ing parameters choose the settings for recording the signal while making the measurement see Chapter 12 Under the Tone Assessment parameters choose the settings for Tone Assessment see Chapter 13 10 2...

Page 103: ...ra to view by tapping the parameter fields in the two lines above the spectrum display These lines also include readouts of the spectrum values highlighted by the spectrum cursor Tap on the spectrum a...

Page 104: ...ange of the Y axis for best fit of the measured spectrum Select Zoom In Zoom Out to adjust the zoom Select Scale Up Scale Down to adjust the full scale value on the Y axis or select Auto Scale to sele...

Page 105: ...ed during the measurement and saved together with the other measurement data The Noise Parameters NC NR RC NCB Loudness and Loudness Level are for display only and calculated based on measured LXeq sp...

Page 106: ...n be viewed later in the same way as described for the Sound Level Meter Project in Chapter 3 Smiley Explanation Description No Loudness for 1 1 octaves Select 1 3 octave No Leq parameter logged Selec...

Page 107: ...measuring broadband parameters see Chapter 3 and spectraa see Chapter 10 the logging module allows you to simultaneously log the following parameters Broadband Parameters including broadband statisti...

Page 108: ...an SD memory card in a SD card slot at the bottom of the analyzer If you have hardware versions 1 3 you can insert a CF memory card in the CF card slot at the bottom of the analyzer With hardware ver...

Page 109: ...accordance with the Measurement Control parameters You can choose to log Full Statistics per Logging Period or not You can also choose to log all the measured Broadband Parameters or a Selected numbe...

Page 110: ...otal parameters is stopped while the CIC is being performed You can see the results of the CIC under Total parameters CIC Result 1 and CIC Result 2 Recording the Signal If you have a license for Signa...

Page 111: ...or Frequency Analyzer The Profile View will be empty because the Total measurement contains only a single set of parameters Select Logged to display the measurement parameters from the logging interva...

Page 112: ...ed as two profiles The Profile Overview with the entire profile and the Profile with 100 logging samples The Profile Overview An overview of the entire profile is displayed across the screen on the to...

Page 113: ...types of marker An Exclude Marker this allows you to mark a sound you want to exclude from your measurement later during post processing or reporting It does not remove any data from your measurement...

Page 114: ...on the screen Marking Measurement While it is Paused The measurement parameter is displayed as a profile while the measurement is paused You can use the stylus to mark the sound categories Tap and hol...

Page 115: ...of the marker 3 Remove the stylus from the display and a drop down menu appears 4 Select Delete for the marker you want to delete from the drop down menu 11 4 Saving and Recalling Results Measurement...

Page 116: ...106 2250 Light User Manual...

Page 117: ...odule The About menu is accessed from built in help tap on the Shortcut Bar then select About See Chapter 9 for instructions on installing the license for the Signal Recording Module 12 1 With Sound L...

Page 118: ...the recording will be at least Minimum Dura tion long but no longer than the Maximum Duration Use Pre recording Time and Post recording Time to specify how much extra you want to be recorded before an...

Page 119: ...he recording will continue until Minimum Duration has elapsed if you press it a second time after Maximum Duration has elapsed then the recording has already been stopped when Maximum Duration elapsed...

Page 120: ...he analyzer Note You cannot record the signal on the internal disk 3 Tap the Main Menu icon and select Explorer from the list of options Navigate to the memory card create a job folder for the measure...

Page 121: ...details in Appendix A To exit the screen tap the icon 12 2 2 Controlling the Recording The measurement is controlled in the same way you would control a normal logging measurement using Start Pause C...

Page 122: ...d and one with 5 minutes of sound 12 2 3 Control Recording using the Stylus If Recording Control is set to any of the events or to All Events the recording can also be controlled using the stylus dire...

Page 123: ...the marker as described in section 11 3 3 and choose Play Sound from the resulting drop down menu The following drop down menu will then appear see Fig 12 2 Fig 12 2 Playing the recording the drop dow...

Page 124: ...he profile underneath you will notice that the profile cursor is updated every second to the position of the sound that is currently being played Fig 12 4 Playing the recording minimizing the pop up T...

Page 125: ...tic Gain Control to Off under the Signal Recording parameters and select the Recording Quality to match your needs for frequency content see details on sampling frequency in Appendix A When Automatic...

Page 126: ...116 2250 Light User Manual...

Page 127: ...g by Evaluator Type 7820 or other post processing software such as Microsoft Excel Check the About menu to see whether you have the right license to run the Tone Assessment Option The About menu is ac...

Page 128: ...searches a measured time averaged Leq spectrum for level differences between adjacent 1 3 octave bands If the level difference between a 1 3 octave band and the band either side of it are higher than...

Page 129: ...If tones are detected outside the range from 25 Hz to 10 kHz the quality indicator yellow smiley indicates Tone out of ISO range detected ISO 1996 2 Annex D does not specify the size of the adjustment...

Page 130: ...he Last or highest Band in the Low frequency range from 12 5 Hz to 315 Hz and set the division between the Middle High frequency range by selecting the required value for the Last or highest Band in t...

Page 131: ...13 1 To measure with the settings you set up manually tap the Cancel button Note 1 Even if you have set the Tone Assessment parameter to On Setup menu the calculation is not carried out until the Tone...

Page 132: ...he parameter fields in the two lines above the Spectrum display and choosing Tone from the drop down menu Once selected tone assessment is carried out on the selected spectrum The results are updated...

Page 133: ...ce to the left and a 3 9 dB difference to the right The information shown in the value panel can be changed by tapping in the field From the tone parameters the adjustment and the selected tone standa...

Page 134: ...see Fig 13 8 Fig 13 8 Viewing results on the logging template Please find more information about setting up a Logging measurement in Chapter 11 13 6 Status Codes Smileys When Tone is selected on the...

Page 135: ...se refer to section 3 3 and section 6 3 for information on how to save and recall measurements respectively Smiley Colour Explanation Remedy Tip for Solution Red No tone assessment on 1 1 octaves Ther...

Page 136: ...126 2250 Light User Manual...

Page 137: ...mance characteristics and proper use of the instrument Some of the applicable sound level meter standards require additional technical documentation in particular for pattern evaluation type approval...

Page 138: ...Setup and Display of Results Using stylus on touch screen or pushbuttons on keyboard Lock Keyboard and touch screen can be locked and unlocked USB INTERFACE Hardware Versions 1 to 3 USB 1 1 OTG Mini...

Page 139: ...te for user setups and measurement data EXTERNAL MEMORY CARD Secure Digital SD and SDHC Card For store recall of measurement data Compact Flash CF Card Hardware versions 1 3 only For store recall of m...

Page 140: ...onential time weightings Fast Slow Impulse one linearly averaging detector and one peak detector C or Z weighted Switchable as for A or B weighted Overload Detector Monitors the overload outputs of al...

Page 141: ...and Number formats can be specified Measurement Status ON SCREEN Information such as overload and running paused are displayed on screen as icons TRAFFIC LIGHTS Red yellow and green LEDs show measurem...

Page 142: ...l at 1 kHz 5 9 to 140 dB Linear Operating Range In accordance with IEC 61260 22 9 dB to 140 dB BZ 7132 1 3 octave Dynamic Range From typical noise floor to max level for a pure tone signal at 1 kHz 1...

Page 143: ...250 L Sound Level Meter Frequency Analysis and Logging Software For data storage Signal Recording requires SD Card All hardware versions CF Card Hardware versions 1 3 USB Memory Stick Hardware version...

Page 144: ...een the Middle and High frequency range and the limits for the level differences between adjacent bands RESULTS Tones are indicated above the spectrum when Tone is selected as spectrum parameter The r...

Page 145: ...gging Software BZ 7133 Type 2250 L D50 Hand held Analyzer with Sound Level Meter Software BZ 7130 1 1 octave Frequency Analysis Software BZ 7131 1 3 octave Frequency Analysis Software BZ 7132 and Logg...

Page 146: ...D CALIBRATION 2250 CAI Accredited Initial Calibration of Type 2250 2250 CAF Accredited Calibration of Type 2250 2250 CTF Traceable Calibration of Type 2250 2250 TCF Conformance Test of Type 2250 with...

Page 147: ...measurements in a diffuse field using a Type 4950 free field microphone by selecting Diffuse field correction Even free field correction of a free field microphone will enhance the overall frequency r...

Page 148: ...use the Handswitch ZH 0680 for manually triggering signal recordings Set Trigger input to Voltage Level if you want to control signal recording by a voltage level generated by external equipment The V...

Page 149: ...Bottom F for Special Leq is f1 in the parameter LXeq f1 f2 6 3 Hz to Top Frequency 1 1 octave 8 Hz 16 kHz 1 3 octave 6 3 Hz 20 kHz Note The lower limit of the parameter depends on Extended Low Freque...

Page 150: ...alue of LXN7 is exceeded for N7 of the elapsed time Table A 6 Measurement control parameters Parameter Values Comment Measurement Modea Manual Automatic Determines whether the measurement is under Man...

Page 151: ...st T minutes updated every second LAeq T mov is not stored with the total data but can be logged BZ 7133 LAeq T mov max for the complete measurement period is stored Charge Injection Calibration b On...

Page 152: ...p Frequency Weightings Broadband excl Peak parameter Y frequency weightings C or Z controlled by Setup Frequency Weightings Broadband excl Peak parameter V frequency weightings A B C or Z controlled b...

Page 153: ...Off Select On for logging of LAS every 100 ms Note Logging LAS every 100 ms requires Broadband excl Peak parameter set to AC or AZ Table A 9 Logged spectrum parametersa a For Logging BZ 7133 templates...

Page 154: ...nt 1 pushbutton during a measurement Marker 3 Text string Default set to Event 2 This marker can be set using the stylus in the profile or the Manual Event 2 pushbutton during a measurement Marker 4 a...

Page 155: ...et Set to All Events to record while any of the events above are active however take Maximum and Minimum Duration into account If you do not want to record the input signal then set Recording Control...

Page 156: ...alue Peak Recording Level 145 dB 135 dB 125 dB 115 dB 105 dB 95 dB 85 dB 75 dB For Automatic Gain Control Off and Resolution 16 bit the recorded wave file has a dynamic range of up to 96 dB When playi...

Page 157: ...um Duration will determine the maximum recording time regardless of the trigger conditions The total record length will then as a maximum be the sum of Maximum Duration Pre recording Time and Post rec...

Page 158: ...to 200 dB Any peak levels that exceed the level set here will be counted Used for calculation of XPeaks NNNdB X A B C or Z set by Setup Input Broadband Peak NNN is the PeaksOver Level Note Two other...

Page 159: ...PEAK parameter X frequency weightings A or B controlled by SETUP FREQUENCY WEIGHTINGS BROADBAND EXCL PEAK parameter Y frequency weightings C or Z controlled by SETUP FREQUENCY WEIGHTINGS BROADBAND EXC...

Page 160: ...Sound Levels LXeq LYeq LCeq LAeq LAeq T mov not saved with data LAeq T mov max Sound Exposure Level LXE LYE Peak Sound Level LVpeak TVpeak Maximum Time weighted Sound Levels LXFmax LXSmax LXImax LYFma...

Page 161: ...IL average of LZeq octave band levels 500 Hz 1000 Hz and 2000 Hz a SIL3 average of LZeq octave band levels 1000 Hz 2000 Hz and 4000 Hz a LWeq f1 f2 sum of power values for LWeq frequency bands from f1...

Page 162: ...a GPS Note Position as Latitude and Longitude Altitude Position error dependant on type of GPS unit B 2 Logged Measurement B 2 1 For Logging Software for 2250 Light BZ 7133 Parameters measured within...

Page 163: ...500 Hz 1000 Hz 2000 Hz and 4000 Hz a PSIL average of LZeq octave band levels 500 Hz 1000 Hz and 2000 Hz a SIL3 average of LZeq octave band levels 1000 Hz 2000 Hz and 4000 Hz a LWeq f1 f2 sum of power...

Page 164: ...Amb Rain Gauge Up to three or all of the following Spectrum parameters can be logged and displayed on the spectrum displaya LWeq LWFmax LWSmax LWFmin LWSmin B 3 Logged 100 ms Measurement B 3 1 For Lo...

Page 165: ...SPL Peak Sound Levels maximum peak sound level once per second LVpeak 1s Instantaneous Weather Data Wind Dir Wind Speed Instantaneous GPS Data Latitude Longitude Instantaneous Measured Spectraa LWF L...

Page 166: ...eq 1 3 octave spectrum is available then Loudness and Loudness Level can be calcu lated and displayed B 4 2 Relationship Between Setup and Measurement Parameters The measurement parameters are measure...

Page 167: ...d v E Dose ProjDose VPeaks NNNdB LavRQ TWA TWAv Dose RQ Proj DoseRQ Sound Field Correction Wind screen Correction Broadband excl Peak A A A A A A A A A A Broadband Peak Exposure Time Reference Time Th...

Page 168: ...2250 Light User Manual 158...

Page 169: ...at is connected to Top Socket Name and serial number of transducer This parameter selects which transducer is connected to the Top Socket displayed in Setup Input and at the top of Transducers databas...

Page 170: ...r is limited to 3 Nominal Sensitivity Double Set automatically for known Microphone Type otherwise set the nominal sensitivity of the microphone in mV Pa Polarization Voltage Yes No Set to No if micro...

Page 171: ...Top Socket 2 Calibration Type External Internal Check 2 Calibrator Serial No Text string 2 Comment Text string 2 2250 Serial No Text string N Calibration date Time YYYY MM DD hh mm ss Current N Sensi...

Page 172: ...on history Serial No for Custom Sound Level Calibrator Text string Serial number will be documented in calibration history Microphone Application Optimised For Dynamic Rangea a From the typical total...

Page 173: ...affic Light Brightness Off Low Normal High Key Backlight Off On Backlight Brightness Minimum Level 2 Level 3 Level 4 Level 5 Maximum Select backlight brightness using the backlight icon at the bottom...

Page 174: ...30 min Never Hardware versions 1 3 only Select optimum value for how long the backlight is dimmed before it is switched off Standby After 1 min After 2 min After 5 min After 10 min After 30 min Never...

Page 175: ...r XX AM or PM Time Zone GMT 12 GMT GMT 13 Select the time zone of your region Language English A number of different languages are available for your 2250 Light Hardware versions 1 3 Select your prefe...

Page 176: ...ed project name Maximum 8 characters Table D 5 Headphone settings parameters Parameter Values Comment Listen to Signal No Input X weighted Input C weighted Input Z weighted You can listen to the input...

Page 177: ...as Signal 80 0 dB to 60 0 dB for Automatic Gain Control set to Off 60 0 dB to 0 0 dB for Automatic Gain Control set to On Key in a gain value 0 1 dB resolution for the measurement input signal Use to...

Page 178: ...printer language Select PCL Inkjet for an inkjet printer accepting PCL language Select PCL Laser for a laser printer accepting PCL language Select Seiko DPU for the DPU S245 or DPU S445 thermal printe...

Page 179: ...et public and www vodaphone de Please consult your network operator User Name string of characters Set User Name as required by your network operator Typically this can be left empty Password string o...

Page 180: ...lt in LAN Socket on hardware version 4 Set IP Address Automatically Manually Set to Automatically to obtain an IP address from a DHCP server if no server available then a Link local address will be se...

Page 181: ...PA PSK is for WPA Wi Fi Protected Access with Pre shared Key also called Personal mode WPA2 PSK WPA2 is an enhanced version of WPA Encryption None WEP Enabled AES Enabled TKIP Enabled Select Encryptio...

Page 182: ...cation Alarm Settings Internal Battery High Low Critical A notification is sent if internal battery enters the set state Disk Space 0 to 100 A notification is sent if free disk space drops to or below...

Page 183: ...in as part of the user name Example Domain UserName Password string of characters Insert the password required for the account The password will be displayed until you press Enter then it will be repl...

Page 184: ...r higher to access the instrument User Name string of characters Define the User Name required for full access to the web page that is view and control of the analyzer and for access from BZ 5503 MPS...

Page 185: ...e levels Criterion Level Criterion Level is the maximum averaged sound level allowed for an 8 hour period Used for calculation of Dose ProjDose DoseUQ and ProjDoseUQ where U F or S and Q 4 5 or 6 dB D...

Page 186: ...for an 8 hour period reference duration relative to the maximum allowed the Criterion Level expressed in percentage Example If the Criterion Level is 85 dB and a person is exposed to a constant sound...

Page 187: ...alculation of LavUQ TWA TWAv DoseUQ and ProjDoseUQ where U F or S and Q Exchange Rate 4 5 or 6 dB Note LAeq is always based on an Exchange Rate 3 Exposure Time Exposure Time is the actual time that a...

Page 188: ...l during a music event doesn t exceed a certain limit at any 15 minutes of observation time during the event The value is equal to LAeq at the start of the measurement as long as the elapsed time less...

Page 189: ...has also been called LAFTm5 or LATm5F LavUQ Average Sound Level with Time Weighting U F or S and Exchange Rate Q 4 5 or 6 This is a widely used occupational health noise parameter in the USA correspo...

Page 190: ...l types of equipment including fans mixing boxes diffusers etc The rating is determined from 1 1 octave LZeq spectra compared with NC curves based on equal loudness curves The NC rating is the value o...

Page 191: ...inable 40 00 00 40 00 00 40 00 00 40 00 00 40 00 00 Threshold Level 80 80 80 80 70 Criterion Level 90 90 85 85 85 90 PeaksOver Levela 140 140 140 140 140 Exchange Rate for Lav 5 5 4 N A N A Weighting...

Page 192: ...e level in decibels of the pressure variation of a sound See also decibel Std Dev The Std Dev is calculated as the Standard Deviation of the noise samples used for statistics This is either LAF or LAS...

Page 193: ...e Software 82 Handling of 89 Inputs and Outputs 6 Microphone 4 Mounting onto Tripod 13 Preamplifier 4 Reinstall Software 87 Reset to Default 7 9 84 Set up for Internet Connection 58 Switching Off 24 S...

Page 194: ...rding Option 27 107 BZ 7231 Tone Assessment Option 28 117 C Calculating Level Difference 119 Calibration 39 Accredited 44 88 Acoustic 39 Certified 88 CIC 45 Details 41 Electrical 39 History 42 History...

Page 195: ...s Results 92 Locking 37 Logging Results 100 Tone Assessment Results 122 Display Settings 61 Parameters 163 Document Measurement 22 Dose 176 DoseUQ 177 Downgrade Software 82 Duration Limit Parameter 14...

Page 196: ...ent 33 PC 32 Power Supply 33 Recording 109 Running Measurement 33 Stopped Measurement 33 Windscreen 33 IEC 61672 1 12 Impulse Time Weighting 25 Indicator 5 Brightness 62 Recalibrating 84 Status 35 Ini...

Page 197: ...ement Parameters 152 Equivalent Continuous Sound Levels 152 Maximum Time weighted Sound Levels 153 Minimum Time weighted Sound Levels 153 Per Set of Logged Parameters 153 Sound Exposure Level 152 Spec...

Page 198: ...enience 14 Measuring from a Distance 13 Memory Cards CF 9 SD 9 SDHC 9 Memory Devices Formatting and Speed 82 Storing and Recalling Data Errors 83 Micro USB Cable AO 1494 7 Microphone 4 Connecting 13 D...

Page 199: ...up and Measurement 156 Selecting 35 Setup 137 Storage Settings 166 Total Measurement 150 Transducer 159 within Elapsed Time 150 Passwords 58 Parameters 174 Paused Icon 33 PC Connection 55 PC Icon 32 P...

Page 200: ...th Logging 110 with Stylus 112 Recording Control Parameter 145 Recording Icon 109 Recording Quality 108 Recording Quality Parameter 145 Recording Signals 54 107 Reference Time 181 Reference Time Param...

Page 201: ...External Triggers 108 Import 57 Input 10 Long 112 Manual Triggers 108 Parameters 145 Play Back 102 Play Back on PC 114 Playing 109 Saving 107 Setting Up 107 Setting Up with Logging 110 Triggering wit...

Page 202: ...rement 18 Start Pause Pushbutton 5 34 Starting From Cold 16 From Standby 16 Start up Initial Sound Level Meter Screen 17 Time 16 Statistics Parameters 139 156 Statistics to Calculate 151 152 153 Statu...

Page 203: ...59 Transducers 43 Parameters 159 Screen 31 Transfer Data to PC 55 Trigger Input 109 Socket 7 10 Trigger Input Parameter 138 Tripod Adaptor 6 Extension Stem 13 Microphone Holder 14 Mounting 13 Mounting...

Page 204: ...e 59 Web Server Settings 58 Parameters 174 Weighting 25 Select 20 What is 2250 Light 26 What is a Sound Level Meter 25 Wind Parameters 76 Speed 65 Wind Speed Unit Parameter 165 Windscreen 13 Correctio...

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Page 208: ...6 H HEADQUARTERS Br el Kj r Sound Vibration Measurement A S DK 2850 N rum Denmark Telephone 45 7741 2000 Fax 45 4580 1405 www bksv com info bksv com Local representatives and service organisations wor...

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