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Verfier Sound Level Meter User Manual

1. lessen 42 MIEWINO MES a cre cates dees decode ttt iret di cud we ee oat tu rores ahead needs 44 Example of explorer pop up window with SES files sssssesssse 47 Example of sound level meter studies occcccccoocncnnccconcnononnnnnonnnononcnnnonnancnnnnnnnns 48 Verifier SES translator export dialogue DOX occccccccocccncconooccnncononnnncconannnnnnonannnnnnos 48 Example session summary data in Excel ccccccccssseeceeceeseeeesceeeeeeeeseaeeeeesssaaees 49 Example study data in ExG6l iere oia 49 Verifier CHAPTER 1 Introduction A Introduction The Verifier simplifies the methodology used to measure and report Speech Intelligibility results This manual provides a brief overview of basic sound principles range of soeech and components used to measure speech comprehension This chapter will provide a quick overview of how to set up to conduct and what scale to apply for your Speech Intelligibility testing Mass Notification System MNS A mass notification system MNS is a type of alarm used to inform occupants in the event of an emergency For example an emergency message at an airport or sports arena may be difficult to understand with background noise and reverberation of speech through the speaker system In order to be effective the system must have clear and audible instructions With the Speech Intelligibility instrument you have the capability to co
2. Locator E pins Figure 2 6 Installing batteries 2 Lift off the lid and set aside Remove the four batteries 3 Replace the batteries with fresh batteries taking care that you orient all batteries with the positive ends toward the base as shown in the drawing 4 Re insert the lid by fitting its locator pins into slots in the base end of the battery compartment The lid should fit snugly when correctly inserted 5 Press the top edge of the lid to snap it into the latch 6 Verify or set the type in the Battery Check screen Verifier 13 Providing power Battery power explained Battery power explained The battery check screen displays the battery power status of the instrument When operating on batteries the grey area in each cell graphic indicates the charge on each cell When operating on an external power source see next section Power supply or adaptor the external power will take precedence over batteries if installed Battery indicator LUE If all bars appear up to starting line this setup BAT CHECK Externally powered indicates full battery B1 B2 B3 B4 If using an external power power source EXT will appear and all batteries will be fully shaded indicating full power capacity Figure 2 7 Battery check screen Checking type The Battery check screen is also used to ensure you have the appropriate battery type selected otherwise you may experience an unexpected shutdown
3. Automobile cable for SoundPro SE DL Verifier 016 127 _ Direct coupled input adapter 059 703 input adapter with 18 pF capacitor 053 734 STI PA test source Sony MP3 Playback CD walkman Verifier 58 Appendix A Specifications Port pinouts Auxiliary connector The auxiliary connector in the base of the instrument can be used to receive GPS signals or for RS 232 serial communications The image below shows the pinout for the auxiliary connector 053 672 Rev C Verifier 59 Appendix B Glossary of Terms APPENDIX Glossary of Terms CIS scale The Common Intelligibility Scale CIS scale is used in a Speech Intelligibility test cited by the IEC 608489 and the NFPA 72 standards which uses a range from 0 0 to 1 0 to determine if a mass notification system is intelligible A rating of 0 7 to 1 0 is considered a passing score dB Sound Level Meters use the decibel as the unit of measure known as Sound Pressure Level SPL SPL uses the ratio between a reference level of 20 microPascals 00002 Pascals and the level being measured SPL 20 log measured level reference level Example the SPL for 1 Pascal is 20 log 1 Pascal 00002 Pascal 94 dB 20 microPascals 00002 Pascals is considered the average threshold of hearing A whisper is about 20 dB A normal conversation is typically from 60 to 70 dB and a noisy factory from 90 to 100 dB Loud thunder is approximately 110 dB and 120 dB borders on the threshold of p
4. In the Verifier Setup screen press the arrow keys to select Comm Set then press a and the Comm Set screen appears 5 Press the down arrow to highlight RS 232 6 Repeatedly press until GPS is displayed The Baud rate should be kept at 4800 unless otherwise specified by your GPS manufacturer amp 7 NOTES If you are not using RS 232 communications in any way you should keep the RS 232 channel set to the Off Lo Pwr setting 053 672 Rev C Verifier 32 Communications GPS This page left blank intentionally 053 672 Rev C Verifier CHAPTER 33 Measuring and reviewing results 5 Guideline to setting up a STI PA test Measuring and reviewing results Guideline to setting up a STI PA test Calibrate the Verifier Set up your STI PA options via the Measures setup screen A level setup is conducted From a fixed point the technician measures the A weighted SPL of MNS message or alarm system and adjusts the range as needed The test signal volume should approximately match the MNS message volume Adjust the test signal to match the Las value as needed The test signal is played through buildings voice system PA system The technician sound tester positions himself herself in Zones building areas e tis recommended to design a map of zones or rooms to indicate where you will be taking your measurements e Set measuring range appropriately STI PA measurement is conducted Press the Run Pause key
5. SD data storage device that is inserted in a slot at the base of the instrument Stores measurements made in studies and sessions in session files If the instrument has a logging option 053 672 Rev C Verifier 55 Appendix A Specifications installed and is logging measurements the logged values are stored in the applicable session file as well The card also stores configuration files Microphones The following specifications apply to microphones connected to the instru ment QE7052 Free field Class Type 2 standard low cost 12 inch diameter 52 electrets 200 volts must be set to Off BK4936 Free field Class Type 1 standard inch diameter 52 electrets 200 volts must be set to Off Characteristic BK4936 le TOLY EII TE um TE Diameter inches inches gt Field Field characteristic Frequency response 8Hz to 20 kHz 20 Hz to 17 2 dB kHz Sensitivity dBV __ 28 29 Sensitivity mv 4o 35 dB noise 1 kHz third octave band dBF noise 4 40 C PME ULA recommended dBPeak Nominal capacitance 12 15 pF 059 523 056 317 Communications ports Auxiliary RS 232 communication USB Mini USB connector This port is used for data and file transfers between the instrument and a personal computer 053 672 Rev C Verifier 56 Appendix A Specifications Measurements Types SPL measures SPL Las Average value La
6. Setup screen COMES ata Examinar LOUSO A NR te emet 053 672 Rev C Setup screens Microphone signal input Softkey Menciona ia SDOGITICBHOFIS Sog Loi tentia atu ze pe us Speech intelligibility Fact Speech transmission index Explained ura cc SPL DEME aaa a aeen eee SLANE SCE CN Dos d sa o e aita STI scale Explained acier dete xen cab STI PA Running a Study sseeuesssss STI PA results Modulation screen STI PA results screen sioe EE ICIS ALON BRE RD MR RN SS Studies Explained iia E TE Time and date Seting UNO ates 8 E TUMO O erea e TAMNO Ose a n e eee a Underrange MACAO IEEE ET USB Cable omoes tn D n DAS USB communications Verifier equipment esses Viewing a past session Viewing results in Excel Weighting A C Z F Bigot La lalezie i i DET T ESTEE Dell Tec scsca i ogni re a nadie e ques Verifier Quest Technologies a 3M company is a manufacturer of durable reliable instrumentation and software systems that help monitor a variety of health and safety hazards includ ing noise vibration heat stress indoor air quality and toxic combustible gases The 3M Quest brand of instrumentation is used by safety and industrial hygiene professionals to help comply with w
7. press AAWY Arrows to select Setup from the main start screen 2 Repeatedly press NW arrow to highlight Comm Setup Press O select Comm Setup e USB will be highlighted 3 Press a until Mass Storage is displayed on the Comm Setup screen 4 An explorer window should appear on your pc with a Data folder Removable Disk E Address bar File Edit View Favorites Tools Help Indicates file drive you are Search 1 Folders Ac ic ies currently viewing Size Type Date Modified Data Folder File Folder 10 17 2006 1 43 PM Right click on DATA and select Copy Figure 5 11 Example of explorer pop up window with SES files Alternative method Right click on Start bottom of your pc and select Explore Select your removable disk drive and Data folder should be displayed The example above displays E drive however your pc may map to a different drive depending on your pc configuration You will want to look through your drives for Data folder 5 To copy this folder highly recommended right click on Data and select Copy Paste this folder on a local or network drive e How to Paste on local network drive Using the address bar see figure 1 1 above click on the drop down arrow and select a local or network drive Either create a new folder or paste it in an existing folder 6 Onceitis copied double click on Data folder 053 672 Rev C Verifier 48 Viewing results in Excel and file converter tool Exporting from
8. Arrow key and the setup screen will appear See Figure 3 1 for Setup screen example Press ANY Arrows to highlight Setup and then press Enter a key Select Display by pressing MY Arrows to highlight and then press Enter a key setup DISPLAY LANGUAGE BACKLIGHT CONTRAST o o Eoo ee Figure 3 4 Display screen language backlight and contrast 053 672 Rev C Verifier 22 setting up the Verifier Changing microphone settings 4 To change the Language setting ensure Language is highlighted or press up down arrow to select and press Enter a key e The Language screen appears An asterisk precedes the name of the currently selected language e Press MWy Arrows to select e Once selected press On Off Esc e key to return to the display screen MM a Setup display LANGUAGE ENGLISH ITALIANO FRANCAIS DEUTSCH ESPANOL Language MPORTUGUESE Portuguese is the selected language in this example Figure 3 5 Language screen 5 Tochange the Backlight select the field by pressing ANY Arrows e Press Enter a key to select either Manual or a value 10 seconds is the default timed setting If selecting a value press MY Arrows until appropriate value is selected When set press the Left Arrow 6 To change the Contrast select the contrast field by pressing ANY Arrows e Press the Left or Right Arrows to decrease increase the contrast setting 7 Toreturn to the STI PA measurement Start screen press O
9. Battery Check screen 1 Turn on the Verifier by pressing On Off Esc e key You will be at the STI PA measurement start screen 2 Toaccess the Setup menu repeatedly press either the Right Left arrow key until it appears 3 Select the Battery menu by pressing Up Down arrow key and press Enter a key 053 672 Rev C Verifier 14 Providing power Power supply or auto adapter 4 To change the battery type press the softkey which corresponds to the batteries you inserted The selected battery type is noted with an underline e Alkaline See A below e NiMH See B below wl p PRA CHECK ILS CHECK B Press softkey to select NIMH A Press softkey to select Alkaline Softkeys Figure 2 8 Selecting battery type in battery check screen 5 When completed press On Ott Esc SY twice to return to the STI PA measurement start screen Power supply or auto adapter If you purchased the optional Universal power supply 9V cable or the Auto DC Jack 12 VDC adapter from Quest Technologies plug them into their respective power sources and the other end into the Power jack of the instrument If the external power source provides the correct voltage 8 16 VDC and sufficient current 300 mA minimum it will be used in place of the batteries if they re installed in the instrument Universal power supply Auto adapter Figure 2 9 Power supply adapter examples 053 672 Rev C Verifier 15 Conn
10. Off Esc S key to return to the STI PA measurement screen 053 672 Rev C Verifier 20 Setting up the Verifier Setting up time and date Setting up time and date The Verifier uses a 24 hour clock and specifies date by the month and year gt Changing date and time settings 1 053 672 Rev C Open the Setup screen e From the STI PA Measurement Start screen press the Left Arrow key and the setup screen will appear See Figure 3 1 Press ANY Arrows key and select Time Date Press Enter a key to open the Time Date settings screen WM 00 00 00 setup TIME DATE TIME 12 28 59 Time and Date fields DATE 26 JAN 2009 Change the Time Date value fields by pressing up down arrows Press Enter key to move to each field DAY MONDAY Figure 3 3 Setting up time and date To change the Time or Date fields first select the fields by pressing Aww Arrows Press Enter key to move to the second column changeable field To change the values press AN Arrows To move to a subsequent field press Enter f key Repeat this process until all fields have been programmed set To return to the STI PA measurement Start screen ensure the selection highlighted text is in the 1 column Then repeatedly press on ott Esc ES key Verifier 21 oetting up the Verifier Setting up the display language backlight and contrast Setting up the display language backlight and contrast The display s backlighting contra
11. config files below MN NM DATA FILE Path Line NEM I FILE NAME Selected file S001 SES SAVE Figure 5 10 Viewing Files gt Renaming past session files 1 Load the session See Loading and Deleting Files 2 Follow the instructions under Renaming the session in memory above Naming renaming config files The naming renaming procedure below includes a lookup utility that you can use to determine what name to assign Use the procedure in this section to name either a session or a configuration file depending upon the sequence you followed to get to this point gt Naming renaming procedure 1 In the File Name screen press a and the following changes will occur e he highlighted cursor moves to the field of one of the four softkeys depending upon the last character in the existing filename e The last character in the filename is underlined 2 To view the existing filenames in the directory before selecting a name called a name lookup do the following e Press to exit the softkey label field Save is selected e Press the right arrow key Dir is selected e Press a The directory opens 053 672 Rev C Verifier 45 Configuration file Auxiliary connector e When finished checking names in the directory press Qo return to the renaming screen e Press any arrow key to select File Name Press on off esc key Select Rename Last Ses File See next step to return 3 Take the follow
12. disturbances caused by wind and direct contact with other surfaces 053 672 Rev C Verifier APPENDIX C 64 Appendix C Customer Service Customer service Contacting Quest If you have questions about the Verifier s characteristics or operation or if you believe that it needs to be serviced please contact Quest Technologies for assistance Telephone 1 262 567 9157 or 800 245 0779 within the U S A e Fax 1 262 567 4047 e Internet www quest technologies com E mail quest mail mmm com Before contacting Quest for assistance become familiar with the SoundPro Information screen that contains the serial number of the instrument and other information that might be useful in resolving difficulties Unit Information screen on page 23 If your instrument won t power up the serial number is on a back label NOTE The Verifier and Quest field calibrator devices should be examined regularly by the factory Quest recommends annual calibration Service policy Congratulations You have purchased one of the finest instruments available manufactured by one of the most respected names in safety amp industrial hygiene instrumentation Your instrument is backed by a limited warranty that seeks complete customer satisfaction Should your instrument require service for any reason you can expect prompt and courteous attention You must obtain a return authorization prior to shipment We reserve the right to refuse any shipments
13. forwarded without prior authorization 053 672 Rev C Verifier 65 Appendix C Customer Service The following information will expedite the service process and is required when obtaining return authorization Model and serial number of each instrument Description of work required and symptoms of any failures for each instrument For non warranty service only VISA MasterCard or American Express credit card or company purchase order number Billing and or return shipping addresses Use one of the methods below to obtain return authorization service pricing and shipping instructions International customers Contact your local factory authorized distributor from whom the product was purchased You can obtain the name and contact information of your local factory authorized distributor from Quest by using the e mail telephone or fax information given under Contacting Quest above United States customers e Go to the Quest website at www quest technologies com and look for the service section e Contact Quest via e mail at sales quest technologies com e Contact Quest at 800 245 0779 Office hours are 8 00 a m to 5 00 p m United States Central Time Warranty 053 672 Rev C Quest Technologies warrants our instruments to be free from defects in materials and workmanship for one year under normal conditions of use and service For United States customers we will replace or repair our option defective instruments
14. purpose of checking the microphone for significant damage such as a torn or contaminated diaphragm You can calibrate the instrument in the field with reference to the output of a calibrated sound source Quest offers a line of acoustic calibrators that are available such as the QC10 20 Calibration screen 053 672 Rev C The Calibration screen contains a calibration option called Calibrate and a Calibration History The history shows Pre Calibration Pre Cal and Post Calibration Post Cal results for previous calibrations as applicable For each calibration type the resulting SPL level is shown along with the time and the date of the calibration Pre Calibration The main reason to calibrate is to adjust the current microphone reading to match a reference input usually provided by a calibrator A Pre Calibration is conducted when the session is stopped When you calibrate during a stopped session the new calibration results replace the previous Pre Calibration results and the Post Calibration results are removed You will always see the last Pre Calibration results Verifier 26 Calibrate Attaching the calibrator to the Verifier Post Calibration A post cal is really a calibration verification that is it does not change the instrument s calibration It compares the microphone s current level with the value read from the last calibration assuming that the same source is used A Post Calibration is a calibration
15. range of the instrument UnderRange condition When an underrange condition occurs during a study this indicator appears and remains lit until the beginning of the next study Alternate functions This icon appears below the Battery Charge Indicator when alternate functions are being displayed Table 2 2 Screen indicators 053 672 Rev C Verifier 12 Providing power Installing batteries Providing power You can power the instrument with internal batteries or from an external power source There are two optional sources which include a universal power supply 9V 66A 2 1 mm and an auto DC jack cable 12V See Optional Parts in Appendix A for more details Installing batteries 053 672 Rev C The instrument requires four AA sized batteries Disposable alkaline batteries are satisfactory but you may also use rechargeable Nickel Metal Hydride NiMH batteries e Rechargeable batteries The instrument does not contain a recharging circuit Recharge batteries externally using the recharging device available from Quest or a compatible device available elsewhere e Selecting batteries Do not mix battery types or batteries with significantly different charge levels BT NOTE To avoid possible battery leakage remove the batteries when the instrument is not in use for prolonged periods To install batteries 1 With the back of the instrument facing up push the release latch to pop open the battery lid Release latch
16. response time is a standardized exponential time weighting of the input signal according to fast F or slow S time response relationships Time response can be described with a time constant The time constants for fast slow and impulse responses are 0 125 s and 1 0 s respectively Relative response dB Relative response dB 10 20 50 100 200 500 1000 Burst duration t milliseconds Figure B 3 Fast response to a tone burst 053 672 Rev C Verifier 63 Appendix B Glossary of Terms SPL oound pressure level A ratio of one sound pressure to a reference pressure Because of the enormous dynamic range of the human ear the ratio is calculated logarithmically by the formula below where L is the reference pressure SPL 20 log dB L Weighting A C Z F SPL measurements are commonly weighted scaled in relation to their frequency components in order to provide a consistent basis for comparison to other measurements of the same type The four weighting curves are plotted together in Figure B 4 where the F weighting curve has been shifted up by 5 dB for graphical clarity The tolerance limits for F frequency weighting are the same as A C and Z frequency weighting F iw TL IN H i 70 1 10 100 1000 10000 10000 Frequency Hz Figure B 4 All frequency weightings plotted together Windscreen A covering for a microphone that reduces
17. this scenario you would set the meter to STI PA and select either STI scale or CIS scale and run your study in the mapped zone areas Scenario two In other situations running a test tone through a PA system during business hours could be distracting and not feasible for your environment In this situation it is recommended to follow these procedures First take sample background noise measurements during business hours These are saved and stored on the Verifier as Captured Curves The verifier will save up to four captured curves Second in the STI PA options select the appropriate captured curve Third run your measurements at the appropriate time of day i e late evening early morning The applied captured curve will automatically factor into your study E Fourth view your results on the display of the instrument or in Excel by using the File converter tool 053 672 Rev C Verifier CHAPTER 5 Getting Started 2 When to take STI PA measurements Getting Started The key components of the Verifier include the microphone preamplifier graphics display keypad AA battery compartment and the bottom connection panel This chapter introduces you to the major components of the Verifier including the equipment understanding the keypad turning on off powering the instrument and hardware components Checking the equipment If your instrument was sent to you in a storage case you will want t
18. unless using a Type 1 microphone The standard setting is 140 aB C Polarization A value of the polarization voltage for the microphone Some microphones have an internal polarization while others require a polarization provided by the instrument NOTE this field is not changeable unless using a Type mic The standard setting is O V 4 To change a signal input field press AN Arrows to highlight specific field s 5 Press Enter a key The result will be one of the following For Sensitivity and Range Cap fields The highlighting moves to the data field Press MWy Arrows to change the value Polarization field Polarization remains highlighted Continue to press Enter a key to change or toggle the value from 0 V to 200 V 6 Once desired fields are changed press On Off Esc key twice to return to the STI PA Measurement Start screen Unit Information screen The unit information screen displays the microphone type type 1 type 2 the serial 053 672 Rev C Verifier 24 oetting up the Verifier Unit Information screen number the revision number and installed features if they exist Opening unit info screen Open the Setup screen e From the STI PA Measurement Start screen press the Left Arrow key and the setup screen will appear See Figure 3 1 2 Press W Arrows and select Unit Info 3 Press Enter a key to open the Unit Information screen The following fields will appear e Instrument field
19. upon which microphone is being used The following measurements are for a typical instrument with the 059 703 adapter 18 pF connected to the preamp and shorted at the BNC end This condition closely simulates the noise floor of a 2 inch microphone For these measurements 053 672 Rev C Verifier 54 Appendix A Specifications the instrument was set to the lowest range and to a slow response time e 22dBA e 30dBC e 35dBZ e 40dBF Environmental effects The typical time interval needed to stabilize after changes in environmental conditions is 5 minutes for each 10 C change Temperature Operating Less than 0 5dB effect over 10 C to 50 C 14 F to 122 F Storage 25 C to 70 C 13 F to 158 F Humidity 10 to 90 RH non condensing User interface Display Size 128 x 64 pixel display that measures 6 cm x 4 8 cm 2 4 x 1 9 Lighting Transflective to take advantage of ambient lighting plus fiber optic backlighting that can be manually operated or set to turn off after a timed interval Keypad Construction Molded layer that holds fourteen press sensitive buttons Buttons Five buttons have dedicated control functions another five are pri marily used for selection and navigation and another four provide variable functions when they are defined in the display softkeys Languages English Spanish German French Italian and Portuguese Input output Memory card Removable Secure Digital
20. 30010 UNIT REY Ri2N Microphone Information Calibration Information Level Date Date Unavailable Configuration Information dB dB dB dB Hrs Speech Intelligibility Settings Method STI PA Score STI PA Gender Male Post Process OFF Figure 5 14 Example session summary data in Excel study 1 11 Feb 2009 08 42 53 00 00 15 Ore 0 09 105 110 study 2 311 Feb 2008 08 43 36 00 00 15 0 79 0 3 102 9 109 9 study 3 11 Feb 2009 08 43 57 00 00 15 0 01 0 91 105 109 5 Modulation Table o Hz 280Hz S0Hz a kHz 105 9 1 04 0 71 106 1 01 1 05 102 1 0 07 1 05 36 1 1 05 1 08 105 9 1 02 O72 105 7 1 04 1 05 102 1 1 02 1 02 36 1 0399 1 01 105 6 1 05 1 01 105 1 1 05 1 01 102 2 1 01 1 02 36 2 1 01 1 04 kHz 4kHz kHz LeqZS mi j mitt LegZS miU mitt LegZS mitt mitt 30 1 0 55 1 ad 0 95 1 04 TA 0 96 1 01 30 1 1 02 1 01 B4 1 02 1 05 EE 1 01 1 03 30 0 99 1 53 9 1 09 0 98 rr 1 02 1 02 Figure 5 15 Example study data in Excel 053 672 Rev C Verifier 50 Viewing results in Excel and file converter tool Auxiliary connector 10 Before disconnecting the Verifier from your PC click on your tool tray located on the Windows task bar lower right hand corner of your screen 11 Click on Safely remove hardware icon 5 land select Safely remove USB Mass Storage device e This causes Windows to finish with partially written data on the card Note you will wa
21. 3M Occupational Health amp Environmental Safety Division 3M Verifier Sound Level Meters The Verfler 7 User Manual 3M Verifier Sound Level Meter Dangers Warnings Cautions amp Battery A Failure to observe the following procedures may result in serious personal injury e Notforuse in explosive or hazardous locations This product is not intrinsically safe Failure to observe the following procedures could damage the instrument e X Read the manual before operation Do not store in temperatures exceeding 60 C 140 F Do not immerse in liquids Condensation may damage your instrument Substitution of components may impair the accuracy of the instrument Repair should be performed by authorized service personnel only General e The battery in this instrument has limited shelf life even if never used e A non condensing environment is required for proper measurements e X Donotcharge battery outside the range of 0 C to 40 C 32 F to 104 F e Battery run time may be reduced when operating at lower than 0 C 32 F temperatures The Verifier is intended to measure sound pressure levels in air and provide speech intelligiblity results Consult your company s safety professional for local standards or call 3M at 1 800 243 4630 Copyright O 2012 Quest Technologies a 3M company 053 672 Rev C Verifier i Table of Contents Table of Contents GHAPTEHR Z JBIFOCUGHODL uti leonesa a 1 Mass Holiicauon s
22. 5 GPS coordinates Figure 4 6 GPS data GPS explained The top two screen selections Interface and Baud Rate specify the GPS setup which is explained under Enabling GPS communications below The rest of the information in the screen appears when GPS communications is enabled and data is being received from a GPS satellite e Status line This data field at the right on this line tells you whether GPS is enabled or not You may see No Fix below this line which tells you that although enabled the instrument is not receiving the satellite signal E Position line When the satellite signal is being received there will be two data fields on this line that give the instrument s latitude N or S and longitude E or W position in degrees and minutes e Other line When the satellite signal is being received there will be two data fields on this line that give the instrument s altitude and time in that order The altitude is given in meters above mean sea level The time is given for Greenwich England GMT and differs in hours from your time by the number of time zones between your location and Greenwich Enabling GPS communications If a session is running stop it 2 Connect the RS 232 cable to the GPS receiver and to the auxiliary port of the Verifier mb 053 672 Rev C Verifier 31 Communications GPS 3 Referring to the user manual for the GPS receiver prepare the device to receive satellite signals 4
23. ONAN EP iia 43 Microphone Changing set up eesessssssss 23 LS FANNING ciui deir eee decora eae cuite 6 Microphone settings 22 Naming Gonto MNES iia 44 Navigatio csse ads 10 Noise Bra e 61 Noise floor DENNE m 61 Octave band lB go 61 Overload o TM MS 11 Overload OL Bale ola aes 61 Pascal Pa Io 61 Pause NAGI CANON ates TER 11 Post calibrate history screen 28 Post calibration cccscscccseeeeeeeeeeeeeeeeenees 26 Power dC Iuuen iis eae men dsl bees tne oe 16 Power supply adapter 14 Verifier 67 INDEX INDEX Power the instrument Preamp and microphone Ataca Preamplifier IristallatiO Diss ie oia uae e eee ec Pre calibrate history screen QSPII Serial communications QSPII Serial and mass storage screens Reference pressure IBT Uia zo EM Me pL Renaming session files Response time F S I Deidad PER Review MAIG ocio Run MAC a e M Running a speech intelligibilty study Screen Indicators anrr o em Seite ross Screens Battery Creek sonst au vore uin iRradedure Ure ui a Session config directories Selecting battery type Session OXDIGIN GG duc oai etse rp e tra m
24. S applications but may be used to communicate to a PC as well The optional 053 729 Serial Cable is required for RS 232 communications The Verifier has two USB communications modes which are QSPII Serial and Mass Storage e QSPIl Serial Figure 4 5 A For QSP Il communications or other supporting applications USB should be set to QSP Serial The RS 232 channel should be turned off for low power consumption e Mass Storage Figure 4 5 B When the USB channel is set for Mass Storage mode the user will have direct access to the instruments SD card through programs such as Windows file manager Much the same way a small pocket USB flash drive operates When obtaining data from the Verifier via Mass Storage it is important to remember that the data obtained is in Native Verifier SES format A File Converter Tool is available to enable you to export the data into Excel Please see File Converter Tool for more information amp 7 NOTE When using Mass storage the user must use the Windows Safely Remove Hardware feature to un mount the Verifier from the PC in the same manner a user must remove a flash drive 053 672 Rev C Verifier 29 Communications USB communications This Windows feature is usually found in the lower right hand side of the windows systems tray MM E 00 00 00 M E 00 00 00 QSP Serial Mass Storage RS 232 Off Lo Pwr RS 232 Off Lo Pwr BAUD RATE 4800 BAUD RATE 4800 Figure 4 5 QSPII Seria
25. T T UM 16 Auxiliary A EN 16 CHAPTER 3 Setting Up te Verner sissie a Ea iii 17 Measures setup screen and capturing background noise occccccoccccccnnnccnconnnccncnnnnccncnnnnncnccnnnnrnncnnnncnnnnnnncnnes 17 SERN Up meand dale NR RR A ERRASSE 20 Setting up the display language backlight and contrast oooooooonnccccccnccccccccnnnnnnnnnnncnnnnnnnnncnnnnnnnnnnnnnnncnnnnns 21 Changing microphone Sets uiis omae dei uae ren bu ceci gad lobe ciue a cL ud 22 Biarginio maiis Tk of me EE 23 CHAPTER 4 Calibrating and Communication x5 s cicer eevee ete ee 25 CS UNDA MNT mmm 25 Calibration Sree Maene aos este gape oed Red OD Sha Da deleted RR MPa due dace Sa Re a abeo dfi dale 25 POC AID AU OM sxc cesta TT E D LT ILLUM 25 gioiello f lit EE A A m LUIS 26 Attaching the calibrator to the Venir 26 e o PR REN A A DTE RUNE A HPLC 28 USB COR ipic allokiS eiecit eie i oido dete ard 29 Ede DD tates ee LL TT 29 053 672 Rev C Verifier il Table of Contents ARSS DA eR eer eee ne 30 E A soe a abet taal aie e D DEP Dic LO MD e Mente e 30 CHAPTER 5 Measuring and reviewing Tesla 33 Guideline toseting upa STI PA TesL 2 iii ipio a TRIRIVNRUPRDULE ee RR 33 About STI PA measurements amp modulation screen resultS ooocccononncccnncconononcconcnnnnnnnncnnnncnnnnanccnnnnnnnnanios 34 GONJUCINO A MEE SU ds 35 Prepago O Mesas anna iajia 35 Bubnirg aspeech intelligibility Std se osaosdes oboe oppi hebt suene co quA dob espe t eta eb gage co ted abr bx sc
26. TI score displayed on the STI PA screen 053 672 Rev C Verifier 38 Measuring and reviewing results Auxiliary connector Captured Curves storing background noise Capturing a curve allows you to take a snapshot of the current octave noise profile It is used to store up to 4 different sound level values during normal operational work shifts without being disruptive with the STI PA test signal Once stored captured the background level noise is later applied while running the STI PA test tone through the building s public address system The Verifier will automatically calculate the captured curve results with the STI PA measurement results gt Capturing a curve 1 Navigate to the modulation screen displayed in Figure 5 4 via the right left arrow keys NOTE you may want to be in the stop mode to view the fluctuating sound level values If in Pause you will not see the screen update 2 Press the Altf key A Captured Curve pop up screen will appear see figure below Me NE 00 00 15 LZF MF1 MF2 125Hz 60 5 dB Capture 250Hz 65 0dB Curve Capture Curve 500Hz 69 7 dB e Press up down arrows to 1KHz 69 9 dB change and press enter to 2KHz 67 6 dB CAP 1 apply the current Average dB level AKHz 61 4 dB aKHz 53 7 dB Figure 5 4 Saving capture curve background noise 3 Press AN Arrows to select Cap 1 Cap 2 Cap 3 or Cap 4 M Note for your first capture you may wish to leave the default of Cap 1 thus
27. ain MTF The Modulation Transfer Function is the ratio of the amount of modulation detected over the average signal level for each modulation frequency STI scale The Speech Intelligibility scale STI is a range of measurement widely used nationally and referenced in the IEC 60489 standard which uses a scale from 0 0 to 1 0 where 0 5 to 1 0 is considered a passing score for a mass notification system STI PA Speech Intelligibility index Public Address STI PA system is an instrumentation method used to measure if a mass notification system MNS is clear precise and audible or intelligible Dynamic range The range of input amplitudes on any given range setting over which the instrument can produce a meaningful response The bottom of the dynamic range is the instrument s Noise Floor for that range setting and the top of the dynamic range is the maximum input signal that will not overload the instrument on that range setting 053 672 Rev C Verifier 60 Appendix B Glossary of Terms Exchange Rate ER Also known as the Doubling Rate this refers to how the sound energy is averaged over time Using the decibel scale every time the sound energy doubles the measured level increases by 3 dB This is the 3 dB Exchange Rate that most of the world uses For every increase of 3 dB in the time weighted average the measured dose would double Level Lpr Notation used to represent sound pressure level measurements in IEC ISO notatio
28. at it is only used when the Exchange Rate is set to 3 dB and the threshold is set to none Las Sound pressure level is the basic measure of noise loudness expressed in decibels Modulation Frequency MF1 MF2 The modulation frequency MF1 MF2 values are calculated numbers based on the modulation signal test signal and any interfering noise auditory spectrum The results of the 14 frequency values range between 0 to 1 indicating intelligible unintelligible based on a CIS STI scale Please see xxx for more information 053 672 Rev C Verifier 61 Appendix B Glossary of Terms Octave band An Octave band is defined as a frequency band whose upper band edge frequency is twice the lower band frequency Noise Unwanted sound Noise Floor The signal magnitude at the bottom of the instrument s linear range Input signals below the noise floor cannot be differentiated from the internal noise of the instrument Overload OL An overload will occur whenever the input signal exceeds the dynamic range of the instrument Pascal Pa Unit of pressure equal to 1 Newton per square meter Reference pressure The sound pressure at the threshold of human hearing as measured under standard conditions This generally accepted magnitude of this pressure is 2 x 10 5 Pascals Pa 053 672 Rev C Verifier 62 Appendix B Glossary of Terms Response time F S Selectable time response settings used in Verifier SE DL measurements The
29. at no charge excluding batteries abuse misuse alter ations physical damage or instruments previously repaired by other than Quest Technologies Microphones sensors printers and chart recorders may have shorter or longer warranty periods This warranty states our total obligation in place of any other warranties expressed or implied Our warranty does not include any liability or obligation directly resulting from any defective instrument or product or any associated damages injuries or property loss including loss of use or measurement data For warranty outside the United States a minimum of one year warranty applies subject to the same limitation and exceptions as above with service provided or arranged through the authorized Quest distributor or our Quest European Service Laboratory Foreign purchasers should contact the local Quest authorized sales agent for detail Verifier 66 INDEX INDEX Alternate functions MMC ger 11 TAN pem cH 9 Applying Captured curves 39 Attaching calibrator to the Verifier 26 Average SPL DOTA CS eT 60 Background noise see captured curves 38 BACK IG Ala ect E ERES Redes 9 Progra MMN eee eis ei td etii 21 Batteries checking or changing 13 Hits ers a GM TER OU teers 11 Battery check screen 13 Calibrating et E de Dt ui 25 Calibrating the Verifier UNO T DT 27 Captured curv
30. ation of the modulation transfer function MTF which is the ratio of measured modulation to the overall signal strength at each modulation frequency In the STI PA measurement screen the MTF is combined according to IEC 60268 16 and presented on a scale between 0 to 1 representing the quality or intelligibility of the mass notification system In the Modulation measurement screen the average decibel level over the run time in seven octave bands ranging from 125HZ to 8KHz with 14 frequencies is displayed in a tabular format These values are the test signal to noise ratio in each attenuation band and indicates which values are intelligible unintelligible based on the CIS STI scale Table 5 1 defines the STI PA modulation frequencies for the seven octave bands per the IEC 60268 16 standard First modulation 1 00 63 2 00 1 25 0 80 2 50 frequency Hz Second modulation 5 00 3 15 10 0 6 25 4 00 12 5 frequency Hz Table 5 2 defines the STI octave band with specific male and female weighting factors used with STI PA measurements per the IEC 60268 16 standard Males 0 127 0 230 0 233 0 309 0 224 0 173 0 078 0 065 0 011 0 047 0 095 HERI 0 117 0 223 0 216 0 328 0 250 0 194 0 099 0 066 0 062 0 025 0 076 m Verifier 35 Measuring and reviewing results Conducting a level setup Conducting a level setup 1 From a fixed point measure the A weighted Sound Pressure Level of your mass notification sy
31. being measured lt is desirable to select the longest range that does not overload e Tochange the range press Up Down Arrow keys when in the STI PA screen 4 Press the Run o key to begin your study 5 The instrument will run for 15 seconds and then pause e To continue to take measurements repeat step 3 e oterminate your study please see step 6 Verifier 37 Measuring and reviewing results Running a speech intelligibility study 6 Press the Stop o key to end your study Figure 5 2 displays a sample STI PA results screen MMM Range Figure 5 2 STI PA results screen 00 00 13 78 5 dB STI PA scale results STI PA results graphical view 7 To view the modulation screen press the Right Arrow key 00 00 15 LL 125Hz 250Hz 500Hz 1KHz 2KHz 4KHz 8KHz Baa 60 5 dB 65 0 dB 69 7 dB 69 9 dB 67 6 dB 61 4 dB 53 7 dB MF 1 0 67 0 69 0 80 0 82 0 75 0 65 0 49 MF2 0 65 0 67 0 78 0 80 0 73 0 63 0 47 MF1 and MF2 e Signal to noise ratio for the 7 bands with 14 frequencies Figure 5 3 Modulation screen with STI PA results Modulation Frequency Column note MF 1 and MF values represent the signal also referred to test signal to noise ratio accounts for any interfering background noise such as non linear distortions electronics reverberation HVAC systems for each band ranging between 0 00 to 1 00 These values are calculated to determine the overall S
32. ctured by SanDisk SDHC cards are not supported Determining the format of an SD card Insert the card in the computer s card reader drive Open Windows Explorer Right click on the CD drive listed under My Computer From the right click menu select Properties o pude UM 5 Onthe General Tab the File System field identifies the card s format Formatting card The Verifier has the capability of doing a Quick Format or Full Format A Quick Format is all that is required in most cases to format a card in FAT 16 format A Full Format will verify each sector of the card as it formats with the penalty of taking much longer 5 CAUTION A Quick Format may be used to delete all files from the card Naming and renaming files There are common procedures that you can use to name and rename files including a lookup capability that allows you to determine if a filename is already in use Renaming session files 053 672 Rev C You cannot rename a session file unless it is in the instrument s memory Accordingly you can rename the closed session currently residing in memory but you must first load a past session file before you can rename it gt Renaming the session in memory 1 Inthe File System setup screen press MWy to select Re Name Last Ses File Verifier 44 Naming and renaming files Auxiliary connector 2 Press f key 3 The session file renaming screen appears 4 Follow the instructions under Naming renaming
33. displays the Model and the Class Type 1 or 2 e Serial number field displays a unique serial number assigned when the instrument was manufactured e Revision field displays the latest firmware software installed on the instrument e Installed features field displays any installed features M NM 00 00 00 UNIT INFO Verifier Type 2 Serial BIF120010 Information screen Revisi B 12N summary of the instrument s evision firmware and serial number Installed Features Figure 3 7 Unit Information screen 4 To return to STI PA Start screen press the On Ott Esc SY key twice 053 672 Rev C Verifier CHAPTER Calibration screen 25 Calibrating and Communication 1 Calibrating and Communication This chapter focuses on how to calibrate the Verifier and also discusses how to communicate with the USB cable and an optional GPS device Calibrate Quest Technologies recommends calibrating your Verifier before you run a STI PA measurement and after to ensure highly accurate measurement results The microphone should be calibrated before use for a number of reasons First the microphone is sensitive to humidity and pressure changes Calibrating before taking measurements assures that your level measurements are accurate for the current environment Performing a calibration verification post cal allows you to verify that conditions have not significantly affected your readings Calibrating also serves the dual
34. done during a session pause When you calibrate during a pause the new calibration results replace the previous Post Calibration results without affecting the Pre Calibration results You will not see Post Calibration results if a pre calibration was performed but not followed by a Post Calibration Attaching the calibrator to the Verifier 053 672 Rev C Before beginning your calibration ensure the calibrator has sufficient battery power to perform the calibration Also you will want to insert the cal adapter into the mouth of the calibrator If the Verifier has a windscreen please remove this before calibrating if applicable gt Calibrating 1 Ensure the Verifier is turned On and is either stopped or paused 2 Attach the calibrator and cal adapter to the Verifier Set the calibrator to 1 KHz and 114 dB if it is a selectable M Microphone Place cdibialor over microphone Cal Adapter Insert into cavity of QC10 QC20 4 QC10 QC20 Select 1kHz and 114 dB bu Figure 4 1 Attaching calibrator to the Verifier 3 From the display of the Verifier navigate to the Set up screen Verifier 27 Calibrate Attaching the calibrator to the Verifier e From the STI PA Measurement Start screen press Left arrow key to open the Set up menu 4 Select Calibrate by pressing ANY Arrows Press Enter f key to open the Calibrate screen 5 Switch On the Calibrator De 40 PRE CAL Mea
35. e 3 1 Sample measures setup screen The following table explains all of the parameters found in the measures setup screen 053 672 Rev C Verifier 18 Setting up the Verifier Measures setup screen and capturing background noise Measures Explanation setup screen Scale type field Select either STI scale or CIS scale Please refer to Chapter 1 STI scale or CIS scale Gender field The voice can be set according to the test signal being use male or female voice NOTE the Verifier default setting is Male If using the test signal supplied by Quest Technologies this uses a male test signal so you will not have to change this field if you only use the male test tone signal Post Process An optional captured curve feature can be applied to your STI PA field testing Essentially you take a snap shot of the current sound level measurement and store it as your background noise Once the background noise data is gathered you can apply the captured noise during your STI PA measurement This may be used in a situation where you cannot play the test signal during normal working hours Please refer to Chapter 1 When to take STI PA measurements scenario 2 for more details Table 3 1 Measures setup screen parameters explained gt Opening the Measures setup screen 1 Open the Setup screen e From the STI PA Measurement Start screen press the Left Arrow key WM NM 00 00 00 Setup screen Measures is
36. ector panel hardware Memory card slot Connector panel hardware The connector panel or hardware Interface Panel is located under a hinged cover in the base of the instrument The cover can be lifted by a tab at one side and snapped shut again by closing and pressing the connector door firmly Memory card slot USB port Auxiliary port AC DC jack Power jack Figure 2 10 Connector panel Memory card slot A Secure Digital SD removable memory card is shipped with each Verifier instrument The card should always be in place when you are operating the instrument NOTE You must use a compatible SD card For information about replacing the SD card or to format please see Memory Card in Chapter 4 USB port A USB cable is shipped with each Verifier One end fits the mini B port in the instrument The other end fits a standard USB connector on a personal computer A USB connection to a personal computer allows files to be transferred settings to be downloaded to the instrument and post session analysis to be performed in the computer using data files created in the instrument AC DC port Not supported on the Verifier i 1 FA 053 672 Rev C Verifier 16 Connector panel hardware Power jack Power jack DC power can be delivered to the instrument through the Power jack Power will be taken from the external source rather than the instruments batteries when the external source provides 8 to 16 volts DC 300
37. es Sel OCUMG ide 38 Capturing CURVES esserci ic 38 CIS scale EXP ois irre tese dota 3 Class Type 2 microphones ADOS Eon c pop Un ON mb eee 6 Conducting a level setup 35 Connector panel ssseeeeeeeeeeeeeeeeens 15 Contacting QUES oi xd ort erectas 64 Contrast Selling UD a 21 dB Pi A nerd ane EE RO DE 59 Bir 9 Dynamic range Delicia 59 jj E 9 Example session summary data in Excel 49 Example study data in Excel 49 Exchange Rate ER Blue e LE 60 Exporting from the Verifier to your PC 47 GPS Yael e 29 EXDIAITISCI A A DADA Ue Doe eb 30 A 30 co A oie e ce tene 30 Information screen Installed features 16 Installing Dallerigs asco rne ieee 12 Keypad 053 672 Rev C Definitions e los ite st were hace hex 9 Keypad and Display Explained eee mte tr 8 L Eo no e E E E EEEE EEA 60 Language SENI UN merced 21 Level Let DOTA CCl 2 o at et hid iia 60 Loading and deleting files 42 Mass notification system A PA EA Lome te enna NC 1 Testing MNS amp site factors 1 Mass Storage cec hin ia 28 Measurements STI PA TES IM 2 Measures setup screen ssss 19 Gender teld nen cerise 18 Post Process field 18 Memory Cal Qs eec tp exe a 43 Memory Caldas pst ed ead nts 15 F
38. ge range is between the maximum overcharge voltage of the NiMH cells 6 6 volts and the low voltage automatic shut down voltage of 4 4 volts Power sources Internal power Approximately 8 hours of continuous operation at normal mode of operation under reference environmental conditions when full capacity batteries are installed Main batteries Four replaceable alkaline AA batteries included as original equipment Rechargeable NiMH batteries available as an option e Battery life Constant run without backlighting Varies depending on whether alkaline or NiMH batteries are in use You can expect the longest battery life when using rechargeable 2700 mAH or greater cells e Battery life Constant run with backlighting Will reduce battery life by approximately 10 Auxiliary battery Internal battery protects against loss of settings when the main batteries are being replaced External power External DC power may be provided to the Power jack from the AC or DC sources identified below Power consumption will range from 1 0 1 5 W at 8 16 VDC e 8VDC 125 to 190 mA e 12 VDC 85 to 125 mA e 16 VDC 60 to 90 mA AC power source Optional switching type power supply Quest part number 053 571 e Supply input 100 240V 47 63 Hz e Supply output 9VDC 1 1A max e DC connector Cable has 2 1mm plug center pin positive 053 672 Rev C Verifier 53 Appendix A Specifications e AC adapters Included are different
39. he drawing to the right Windscreen Use a windscreen that fits the tip of the microphone to reduce sound disturbances caused by physical contact and wind turbulence Quest provides the WS 7 windscreen that fits a 12 inch microphone with the Verifier kit Other optional sizes are available depending on the size of the microphone you ordered 053 672 Rev C Verifier 7 Microphone and accessories Attaching the preamp and microphone Attaching the preamp and microphone The instrument s preamplifier preamp and microphone are detached and shipped in the carrying case Connecting to the instrument o Windscreen Microphone Twist preamp locking ring onto the instrument Figure 2 2 Verifier preamp and microphone 1 Attaching the preamp Place the preamp connector over the mating connector at the top of the instrument Gently press down while rotating the preamp until the preamp connector drops slightly in place While pressing the connector together to engage the threads rotate the black knob clockwise to secure the preamp to the instrument It will fit securely 2 Attaching the Class Type 1 or Class Type 2 microphone The instrument is shipped with the microphone detached Remove the microphone from its protective case and thread it on the preamp Before using be sure to remove plastic cap amp 7 NOTE if removing the microphone from the preamp please adhere to the caution sticker located
40. ia a cd eed Ai 64 NIDE A A N 66 053 672 Rev C Verifier iii Figures Figures Figure 1 1 Figure 1 2 Figure 1 3 Figure 2 1 Figure 2 2 Figure 2 3 Figure 2 4 Figure 2 5 Figure 2 6 Figure 2 7 Figure 2 8 Figure 2 9 Figure 2 10 Figure 3 1 Figure 3 1 Figure 3 2 Figure 3 3 Figure 3 4 Figure 3 7 Figure 4 1 Figure 4 2 Figure 4 3 Figure 4 4 Figure 4 5 Figure 4 6 Figure 5 1 Figure 5 2 Figure 5 3 Figure 5 4 Figure 5 5 Figure 5 6 Figure 5 7 Figure 5 8 Figure 5 9 Figure 5 10 Figure 5 11 Figure 5 12 Figure 5 13 Figure 5 14 053 672 Rev C Testing a MNS amp factors influencing the site ccccccsseeeeeeeeeeeeeeeeeeeeeeeeeseaneeeeeess 1 TES M 3 A men Hu coco 3 MR 5 Verifier preamp and microphone ccccooccnccnnconccnncncocononcnnncononnncononannncnnnnonononcnronanancnnos 7 Verifier keypad and display explained cccoooncccccccocccnnccconcconcononcnnnnononnnnnnnnonnnnnnnnnos 8 Venter starl SChOCM mc 10 Arrows and enter keys on the keypad ccccccoocccnccccocccnnccnoncnnncononnnnnnononnnnncnnannnnnnnnnos 10 aclare TUE LE 12 Battery check SChEEN eed retis ine tare see dc oisi e rehede danti a ao be esee atender oot 13 Selecting battery type in battery check screen occcooonccccccccoccnncononncnncononnnnnnonannnnnnos 14 Power supply adapter examples ccccsseecccccesseeeeecee
41. ing actions to change the underlined character e Press W to move sequentially through the characters for that softkey The underlined character in the name changes as you press the keys e Press a different softkey to select a different character set e Adda character by pressing the right arrow key e Delete a character by pressing the left arrow key Hepeat the operations in the previous step as many times as necessary to compose the name When finished press e The Save selection in the screen is highlighted Press and a message appears telling you whether the renaming is successful or not e Successful If the filename is unique File Saved appears Press to exit the renaming screen e Unsuccessful If the filename is already in the directory File Error File Already Exists appears Press amp to return to the renaming screen Configuration file Use the procedure below to create a configuration file from the current settings in the instrument Naming a configuration file is an integral part of this saving procedure Creating gt Creating the file 1 Ifthe session is open you must stop it before you can make configuration changes or save a configuration file 2 Change or verify the parameter and instrument settings that you prefer according to procedures explained elsewhere in this manual 3 Inthe File System setup menu select Save Config File by pressing AMAN 4 Press a A naming screen appea
42. l A and Mass Storage B screens USB communications gt USB communications 1 Ifa session is running stop it 2 Inthe Setup screen press AN Arrows to select Comm Set then press a The Comm Set screen appears 3 USB should be Highlighted Press B to toggle between QSP Serial and Mass Storage 4 Ifthe RS 232 channel is not set to Off Lo Pwr press the left arrow to highlight RS 232 and repeatedly press until Off Lo Pwr is displayed 6 Press e to exit the screen Connect the USB cable to the Verifier and then to the USB connector on the computer see USB port for more details on page 15 N GPS The Verifier has the capability of embedding GPS information into study headers To interface a GPS you need a GPS receiver with RS 232 communications that conform to NMEA 0183 version 2 and the optional 053 729 Serial Cable In many cases a Male Male DB 9 null modem connector will be required as well The Verifier will keep a GPS fix for up to 1 minute before declaring it invalid at which time No Fix will appear if you are in the COMM SET menu 053 672 Rev C Verifier 30 Communications GPS i NOTE GPS time can be viewed in the Comm Set screen but is not otherwise used in the instrument GPS display You can view GPS data in the Comm Set screen The position coordinates are stored in each study which GPS is enabled MM E 00 00 00 QSP Serial RS 232 GPS BAUD RATE 4800 N37 23 516 W 122 02 62
43. m ROB A 36 Captured curves storing background noise oooooccccinonnncccccnoconoonnnnnnonnnnnnnnnnnnnonnonnnnnnnncnnnnnnnnnnnnrnnonnnananenennns 38 Applying captured curves background noise cccccccceeeeeeeeeeeeeaeeeeeeeeeeaaeceeeeeeesaaaeeeeeeeseaaaceeeesessaaneeeees 38 RevIieWwINg testlls a 40 PINS SCIECC FOROS ia NN NE o 40 File directory screen explain 40 Differences between directories cursan kaarewortvensiodelaweicinasaaniadclanewandeanatienoheweeiaiteenduigsakannwintagabianenanswonezaan want 41 Loading and deleting Mesa 41 Viewing pastimneasurelmiebllsssodisteu ima dvo sott ia gevxCu cutem a pou qu da me oS a hn ct Ee bm debates 42 WSO PVC ANG PNE RR I DUET LL UE 43 enis A 43 sistunt M 43 b rzingsreE ient isinineBicmeee ER 43 Renaming session NSS rms aid 43 A A a A E 44 Pe e LTEM 45 i em 45 Viewing results in Excel and file converter tool llsseeeseeseseeseseeeeeee eene nennen nennen nnne nnne nnn nnns 46 Downloading the SES file Translator autant cs Steck leticia 46 Exporting from ihe Venierto your PAE 47 APPENBDCA Special osn a E OR 51 APPENDIX B Glossary Oller cts A A med che o ERE VELO EE DUE s 59 APPENDIXG Contacting customer Servie dea ete deett d diee eei
44. ma minimum Two optional sources for this power are available a switching power supply connected to an AC source and DC power provided through the accessory jack of most automobiles Please refer to either the Power sources or see Part numbers in the Appendix for more information Auxiliary port Use for GPS connectivity with serial cable P N 053 729 053 672 Rev C Verifier CHAPTER 3 17 Setting up the Verifier Measures setup screen and capturing background noise Setting up the Verifier This chapter covers the basic features and setups of the Verifier which include the following Setting measurement parameters Setting time and date parameters Viewing battery charge and or changing the battery type Setting up the display including language backlight and screen contrast e Changing the microphone settings Signal input screen e Unit Information parameters Measures setup screen and capturing background noise The measures setup screen is one of the main screens you will visit from time to time in order to select a STI PA scale select a gender voice and or select apply a captured curve NOTE to change the range visit the STI PA screen which is the initial powered on screen MM Setup SPEECH INTEL METHOD STI PA To measure the background noise during SCALE CIS non working hours set the post process GENDER MALE field to Capture Curve 1 4 and then run a t POST PROC CAP 1 measuremen Figur
45. n where the measurements are made with particular frequency F and time T response parameters For an actual measurement the F and T parameters are replaced by standardized notation for those parameters L av Average sound level measured over the run time This becomes a bit confusing when thresholds are used Any sound below the threshold is not included in this average Remember that sound is measured in the logarithmic scale of decibels therefore the average can not be computed by simply adding the levels and dividing by the number of samples When averaging decibels short durations of high levels can significantly contribute to the average level Example Assume the threshold is set to 80 dB and the Exchange Rate is 5 dB the settings of OSHA s Hearing Conservation Amendment Consider taking a one hour noise measurement in an office where the A weighted sound level was typically between 50 dB and 70 dB If the sound level never exceeded the 80 dB threshold during the one hour period then the Lava would not indicate a reading of zero If 80 dB was exceeded for only a few seconds due to a telephone ringing near the instrument then only those seconds will contribute to the Lave resulting in a level perhaps around 40 dB notably lower than the actual levels in the environment RTIME Lj ER log ile RTIME dB Laeg The true equivalent sound level measured over the run time The term Laeg is functionally the same as Ll Av except th
46. n Off Esc S key twice Changing microphone settings With Class Type 1 models the microphone s sensitivity range cap and polarization can be checked and or changed in the Signal Input menu when stopped Alternatively Class Type 2 models settings are viewable at any time the session is stopped but cannot be modified The following table displays the required mic settings Signal Input BK4936 QE7052_ Polarization V o o Table 3 2 Required microphone settings 053 672 Rev C Verifier 23 Setting up the Verifier Unit Information screen Changing Microphone settings This procedure applies only to Class Type 1 models 1 Open the Setup screen e From the STI PA Measurement Start screen press the Left Arrow key and the setup screen will appear See Figure 3 1 2 In the Setup screen select Sig Input then press Enter The Signal Input screen appears setup SIG INPUT Menu path displayed A Sensitivity Sensitivity B Range Cap Range Cap C Polarization Polarization OV Figure 3 6 Microphone Settings Signal Input screen 3 Signal Input options are explained below A Sensitivity Calibration parameter for the selected microphone This is a nominal value in decibels relative to 1V Pa B Range Cap Top of the measurement range for the microphone instrument combination In any screen showing a decibel range this setting affects the maximum value NOTE This field is not changeable
47. n preserved in the broadcasting of an artificial speech signal through an alarm system The intelligibility measurement is a single value between zero and one which factors in corruption of speech with modulating speech frequencies over octave bands between 125Hz to 8kHz STI PA is measured using seven octave bands and 12 modulation indices per octave band simultaneously allowing a 15 second measurement In essence any noise which masks or corrupts the talker to listener path is evaluated and a recommended measurement is computed at the end of an intelligibility test The following sections briefly address points to consider when setting up a STI PA test 053 672 Rev C Verifier 3 Factors with Speech Intelligibility STI scale or CIS scale explained STI scale or CIS scale explained With the Verifier instrument you have two measurement options which will determine the intelligibility of your building Speech Intelligibility Scale STI The speech intelligibility scale is widely used nationally and referenced in the IEC 60489 as a viable method to rate a mass notification system The scale identifies if the mass notification system is intelligible or unintelligible based on a STI scale ranging from 0 0 to 1 0 where 0 5 to 1 0 is considered a passing score per NFPA 72 and IEC 60849 STI 00 030 03 045 0 45 0 60 0 60 0 75 0 75 1 00 scale Figure 1 2 STI scale Common Intelligibility Scale CIS Another method t
48. n this menu structure 1 From the Setup screen select the File Sys and press l 2 Inthe File screen select Session Directory or Configuration Directory then press a The directory that you requested appears MA FILE Select Session Directory to past CONFIG DIRECTORY measurements and then press RE NAME LAST SES FILE Load SAVE CONFIG FILE FORMAT CARD Figure 5 7 File Directory Screen 053 672 Rev C Verifier 41 Reviewing Results Differences between directories Differences between directories The Session Directory screen see A below and the Configuration Directory screen see B below are both types of directories NOTE The Path Lines are different and generally the filenames are different as well In all files associated with the Session Directory the Path Line will read Data File In all files associated with the Configuration Directory the Path Line will read Setup File A Session Directory B Configuration Directory LL LS DATA FILE SETUP FILE S001 S006 S002 S007 AS VERIFIER S003 S008 SND TE2 S004 S009 y ed cd SND TE3 DELETE LOAD MORE DELETE LOAD MORE Figure 5 8 Examples of directory screens Loading and deleting files The loading of files enables you to review past measurement results At any time you can delete sessions as well 7 NOTE It is important to understand that the delete operation takes place as soon as you press the respective
49. nduct a sound level test programmed with either Speech Transmission Index scale STI scale or Common Index Scale CIS scale enabled to determine if the system is intelligible Amplifier E LEQ 125Hz 60 5 dB 250Hz 65 0 dB 500Hz 69 7 dB 69 9 dB 67 6 dB 61 4 dB 53 7 dB Reverberation Reverberation ambient noise ambient noise distortion distortion Analyzing STI PA results Figure 1 1 Testing a MNS amp factors influencing the site 053 672 Rev C Verifier 2 Factors with Speech Intelligibility Measurements Factors with Speech Intelligibility There are various factors which affect the transmission of speech from an alarm system to occupants These factors have been defined by NFPA 72 code National Fire Alarm Code as the following distortion echoes reverberation level of ambient noise and announcements signal to noise ratio Measurements The Verifier STI PA meter speech transmission index public address determines the intelligibility or quality of sound in a building environment by measuring the system on a Speech Transmission Index STI scale or a Common Intelligibility Scale CIS Speech Transmission Index STI Speech Transmission Index STI is a standard index developed in 1970 s used to evaluate and classify speech intelligibility dependent of background noise level STI is the standardized measurement in the IEC 60268 16 1998 standard STI refers to the amount of modulatio
50. nt to follow the Safely Remove procedure on all USB flash drives 053 672 Rev C Verifier 51 Appendix A Specifications APPENDIX A Specifications Conformance to standards Acoustics IEC 60268 16 2003 Objective rating of Speech Intelligibility by Speech Transmission Index EMC emissions and immunity Pending testing on production products References Air temperature 23 C otatic pressure 101 325 kPa Relative humidity 50 Level 114 dB Frequency 1 kHz Microphone Capacitance 18 pf Microphone Sensitivity 28 dB Range 110 dB Angle 0 Degrees Mechanical characteristics 053 672 Rev C Housing Stainless fiber filled ABS polycarbonate with internal EMC shielding Size 7 9 cm wide x 28 2 cm long x 4 1 cm thick 3 1 x 11 1 x 1 6 The width is measured across the face of the instrument The length which includes the preamplifier but not the microphone is measured along the longest axis of the instrument Weight 0 54 kg 1 2 lbs including batteries Tripod mount Threaded insert on the back of the instrument Accepts a 1 4 20 screw Verifier 52 Appendix A Specifications Electrical characteristics While the instrument is operating from battery or external power it conforms to all applicable tolerance limits of the stated standards While operating on battery power alone the instrument will automatically shut down when the battery power is depleted The total battery volta
51. o remove all the packaging and acquaint yourself with the equipment so you can quickly get started The items below are included in a standard Verifier kit Preamp Verifier Microphone B e Optional 1 Y and Y i microphones available USB cable e CD with Calibrated test signal and CD player Figure 2 1 Verifier equipment 053 672 Rev C Verifier 6 Microphone and accessories When to take STI PA measurements Microphone and accessories The Verifier is shipped with either a Type Class 1 or a Type Class 2 microphone in a protective case with a serial number labeled on the side of the microphone To attach and remove the microphone please follow one of the types below e BK4936 microphone Class Type 1 Remove the microphone from its case and thread it on the Verifier preamp in accordance with the instructions provided in the microphone case Note that the BK4936 microphone is provided with a Random Incidence Corrector RIC Use the same microphone instructions for information about using and installing that device e Class Type 2 microphones Remove the microphone from its protective case and thread it on the preamp No CAUTION 7 Before using be sure to remove plastic cap and save it e in the case for future use Yes E amp 7 NOTE to properly remove the microphone please adhere to the caution sticker located on the backside of the instrument and t
52. o report intelligibility results is using the Common Intelligibility Scale CIS scale It was created to map all methods i e STI percentage of articulation loss of consonants word lists to the same scale so that results could be compared Similar to the STI scale the CIS scale uses a range from 0 0 to 1 0 to determine if the MNS is intelligible However with the CIS scale a rating of 0 7 to 1 0 is an intelligible score per the IEC 608489 and NFPA 72 0 48 0 65 0 65 0 78 10 78 0 88 0 88 1 0 c asd 1 3 CIS scale 053 672 Rev C Verifier 4 Factors with Speech Intelligibility Zones Spaces Zones Spaces Where do measure speech intelligibility Buildings such as hotels medical facilities or stadiums can be broken into zones Each zone has a room with one alarm system In some situations one room may have more than one alarm system or may have a change in ceiling height such as an atrium or balcony seating versus lower level seating In those instances each section would be considered a zone and each zone would be tested After determining the zones in your building it is recommended to design a map of the key zones rooms Generally a zone is a 20X20 area If the room is larger than 20X20 it is recommended to take another measurement in this section When to take STI PA measurements Scenario one You may be able to run the test signal through the PA system during normal business hours In
53. on the backside of the instrument 053 672 Rev C Verifier 8 Display and Keypad Explained Display and Keypad Explained The keypad is used to setup the instrument run a study stop a study view your measurement values and power on and off the instrument Table 2 1 explains the function of the keypad and display features Indicators Top line e Battery power EEH e Pause e Run time 00 00 15 1 Display 6 Softkeys 2 Backlight Ani 8 Enter 3 Stop stop d g Left Right arrows 4 Up Down arrows i 10 On Off Esc Pause 5 Run Pause Figure 2 3 Verifier keypad and display explained 053 672 Rev C Verifier 9 Quick Start Turning on Keypad Explanation 1 Display Used to view measurements Lago STI PA results range menus and various indicators 2 Backlight Used to illuminate the background of the display screen i e nighttime study 3 Stop key Used to stop your study when you are in pause mode A 3 2 1 countdown will appear as you continue to press the stop key 4 Up Down arrow keys Used to navigate through menus and or data 5 Run Pause key Used to run a study At the end of the run a pause indicator will appear You can press run again to start another measurement or you can press stop to close the session The run pause or stop indicators will appear at the top of the screen 6 Softkeys The softkeys are used for additional menu options and are Shortcut menus acce
54. orker safety and environmental regulations and standards around the world Quest Technologies a 3M company is part of the 3M Occupational Health amp Environmental Safety Division a global leader in respiratory hearing eye head and fall protection visibility and protective clothing and detection products To learn more call us at 262 567 9157 or visit www 3M com detection 3M loea now part of 3M Occupational Health amp Environmental Safety Division Quest Technologies a 3M Company ISO 9001 Registered Company ISO 17025 Accredited Calibration Lab www questtechnologies com 1060 Corporate Center Drive Please recycle Printed in USA Oconomowoc WI 53066 2012 3M Customer Service 262 567 9157 All rights reserved Toll Free 800 245 0779 053 672 Rev C 3 12 3m com detection
55. p key while playing the test signal in the appropriate location zone In the STI PA measurement screen it will display post cap x where x represents captured curve 1 2 3 or 4 M NOTE press the left right arrow to view the modulation screen if desired Bum M 00 00 15 190 440 Laea 69 4 dB STI PA 0 69rosr Male GOOD CAP 1 Captured curve background noise pre stored in memory is applied as Post Cap 1 2 ee 0 0 0 3 0 45 0 6 0 7 1 0 Figure 5 6 STI PA with cap curve background noise applied 053 672 Rev C Verifier 40 Reviewing Results File directories Reviewing Results File directories Files on the memory card are stored in directories Session files are automatically stored in the Session Directory and Configuration Files are automatically stored in the Configuration Directory Use the file directories to load files to delete files and to inspect filenames as part of a naming or renaming procedure to determine if a filename has already been used v CAUTION The memory card should not be inserted or removed when working in the instrument s file system you can lose data File Directory screen explained In the file directory screen you can select a past session to load and view on the instrument s display Additional menu screen options are available including configuration directory renaming a session file saving a configuration file and formatting the card are all performed i
56. rs for configuration files The configuration file naming screen is identical to the screen shown in Figure 5 9 except the Path Line reads Setup File and the selected file has a cfg extension 5 Follow the procedure given under Naming to name and save the file 053 672 Rev C Verifier 46 Viewing results in Excel and file converter tool Auxiliary connector Viewing results in Excel and file converter tool For easy data analysis and report creation the SES file Translator part number 057 882 is a program that will export or download your Verifier study files called SES files into Microsoft Excel XLS format The following sections will walk your through downloading the SES file translator program and then take you through exporting your files from your Verifier to Excel or XML files Downloading the SES file Translator A quick install of the SES file Translator is required before you convert your Verifier files to Excel format Please follow the steps below Launch the setup exe file for the SES file translator 2 SES Translator Install Shield Wizard will appear Select Next e Click Install to load the SLS translator The utility will load in about 20 30 seconds 3 Click Finish to conclude the install 053 672 Rev C Verifier 47 Viewing results in Excel and file converter tool Exporting from the Verifier to your PC Exporting from the Verifier to your PC While the Verifier is in the On mode
57. s STI PA CIS Intelligibility scale Ranges Eight selectable ranges of 50 dB each Ranges include 70 20 dB 80 30 dB 90 40 dB 100 50 dB 110 60 dB 120 70 dB 130 80 dB 140 90 dB Measurement parameters Response time Fast and Slow Frequency weighting A and F flat Calibration Pre calibration When performed valid prior to the start of a session Post calibration When performed valid for the previous study in the ses sion Storage All calibrations for a session are stored in the related session file Calibrators All Quest Calibrators have an output of 114dB at 1 kHz and some may have other settings See Calibrating and Communications in Chapter 4 for more details Studies and sessions Run time clock Duration of every run and session shown in screens as well as added to the session file Manual operation Run Pause and Stop keys 053 672 Rev C Verifier 57 Appendix A Specifications Part numbers 053 672 Rev C Replacement parts Part Number 059 523 Class 1 BK4936 microphone Y free field electret prepolarized 056 317 Class 2 QE7052 microphone 72 free field electret prepolarized Q Q C 10 C 20 QC 20 Calibrator Selectable 94dB or 114dB at 250 Hz or 1000 Hz Output 56 990 1 2 inch Microphone to calibrator adapter for QC 10 and QC 20 59 045 0 calibrators 0 TP 1 tripod height range 18 5 in 48 9 in 053 870
58. s a navigational tool at any time you wish to move back one level If you press ESC repeatedly you will return to the start screen bM s and Down Arrow keys Enter key Left and Right Arrow keys Figure 2 5 Arrows and enter keys on the keypad 053 672 Rev C Verifier 11 Quick Start Turning off Turning off 1 Toturn off the Verifier ensure the meter is stopped i e Ball indicator will display on the top of the screen 2 Press and hold the On Off Esc e until the start screen disappears Screen indicators explained Status information is provided by the instrument at the top of the display Below is a summary of all of the indicators Icon Significance Battery charge status This icon shows the status level of the batteries The I example shown to left indicates that the battery is at full capacity Run state This icon appears when a study is running Paused state This icon appears when the current session is open but paused EJ Stop state This icon appears when the current session is stopped Review mode When the pause and stop icons appear this indicates that you are viewing a saved file Overload condition When an overload occurs during a study this indicator OL appears remains until the session is closed or when you press stop Once the instrument is stopped the OL indicator becomes live e An overload will occur whenever the input signal exceeds the dynamic
59. seeecesaeeeeeeeceaaeeeeesseaeeeeeseaaaes 14 Connector Panel erica reitera ias 15 Sample measures setup screen c ccooococcccnnnccnnnnnnnnnnnnnnonnnannnnnnnnnnnnnnnnnnnnnnnonnnnnnnnnnnnns 17 Tz iU ONIS Tz c NN TEE EET TREE 18 Speech intelligibility measures setup SCreeN oooccccccnonccnnccnnnccnncnnnnnnnnnononnnnnnonannnnnnos 19 Setting up time and date hese a i E ia 20 Display screen language backlight and contrast oooocccccccnncccncccnncccnccnnnncnnnnnnnos 21 Unit informatiorn Screens toilet 24 Attaching calibrator to the Verlfler comisaria 26 Calibrating ne Veni NN DT ER 27 Pre calibrate history SCTeenN ooncccccncococoncococononcnnononononnnnonannncnnanonononnnnonannnnonananinnos 27 Post calibrate history screen onoccconcccccocnococonnnconononononconononnnconanononnnnononannnconanancnnas 28 QSPII Serial and mass storage SCreenNS oococcccccccooooooooooonononnn nono nono nonnnnnnonononnnnnnnnns 29 A A An 30 Level set up and average decibel level ooccccccconcconccconnnonccnonnnnncononcnnncnnonnons 35 A A II cus DL E 37 Modulation screen with STI PA results seeeeeesseeeeeeeneeeenenn 37 Saving capture curve background noise oooooncccnnccccncnonnccnnncnnonononononononnnannnennnnnnos 38 Selecting a captured curve background NOISEC cccccseeeceeeeeeseceeeeeeeeeeeeeeeeeeeeees 39 File directory screen een 40 Examples of directory screens dd 41 Loading and deleting files
60. selected Press Enter key to open CALIBRATE the menu TIME DATE FILE SYS COMM SET UNIT INFO BATTERY OPTIONS DISPLAY SIG INPUT Figure 3 1 Setup screen 2 Select the Measures field and press Enter a key amp 7 NOTE the Measures field should be selected shaded when you open this screen If it isn t press the up or down arrow key to select and then press the Enter key 053 672 Rev C Verifier 19 setting up the Verifier Measures setup screen and capturing background noise WF setup SPEECH INTEL Speech Intelligibility setup METHOD STI PA e Method not a changeable field SCALE Stl Scale STI or CIS scale Gender female or male voice Post Proc optional method to save the current SPL also called captured curve GENDER MALE POST PROC CAP 2 Figure 3 2 Speech intelligibility measures setup screen 3 To change the Scale field press the Enter a key to switch between STI or CIS scales 4 To change the Gender field press the Down Arrow to select the field and press Enter a key to switch between Female or Male 5 To change the Post Processing field press W Arrows to select Then repeatedly press the Enter a key until the appropriate captured curve is selected The default setting is Off 6 To change the Range field press AS Arrows to select Then repeatedly press the Enter a key until the appropriate range is selected 7 Once all parameters are selected repeatedly press the On
61. sions and studies explained amp 7 Caution The memory card should not be inserted or removed during a study you can lose data 053 672 Rev C Verifier 36 Measuring and reviewing results Running a speech intelligibility study Running a speech intelligibility study 053 672 Rev C Before proceeding with a STI PA measurement ensure you calibrated the Verifier and conducted a Sound Level setup NOTE if there is impulsive noise present it is best to capture the background noise via the Captured Curve pop menu remove the noise or come back later when the noise is not present That is because impulsive noise and strong voices can skew the measurement results If you captured the background noise you would then come back when the noise is not present and apply the captured curve during a STI PA measurement See Captured Curves for more information The following instructions explain how to run pause and stop a STI PA study without captured curves If you wish to take a background noise sample also called captured curves please refer to Captured Curves on page 38 NOTE it is optional to organize your measurements into sessions and studies gt Running a STI PA study 1 The Verifier should be powered on and you should be viewing the STI PA measurement screen 2 Play the signal over the loudspeaker and then locate yourself in the appropriate zone room 3 Verify that the range setting is appropriate for the level
62. skipping this step 4 Press Enter to store the current levels and exit the pop up selector screen M NOTE once you select a capture curve and press the Enter key the Verifier will automatically store the average decibel reading Applying captured curves background noise 053 672 Rev C Once you have captured curves background noise these will store in the memory of the Verifier To apply the curves background noise during a STI PA measurement first select the curve through the Measures setup screen in the Post Processing field and select Cap 1 Cap 2 Cap 3 or Cap 4 Then return to the STI PA measurement screen or the modulation screen and run your measurement with the test signal The Verifier will automatically apply the curve results background noise in your study Verifier 39 Measuring and reviewing results Applying captured curves background noise gt Applying Captured curves 1 Inthe Setup screen select Measures and press a 2 Select the Post Processing field by pressing ANY Arrows 3 To change the setting to either Cap 1 Cap 2 Cap 3 or Cap 4 repeatedly press AB key until the desired curve is selected NM M Setup SPEECH INTEL METHOD STI PA SCALE STI GENDER MALE CAP 1 Captured Curve Figure 5 5 Selecting a captured curve 4 Return to the STI PA Measurement Start screen by repeatedly pressing On Off Esc IS or press left arrow keys to toggle through the screens 5 Press the Run Sto
63. snap on adapters that allow it to plug into various outlets DC power source Quest offers a cable as an option that plugs into an automobile auxiliary jack Quest part number 053 870 9 0 Volts is the nominal power supply voltage to be applied to the DC power jack Preamplifier removable Microphone Accepts 13 2 mm 0 52 microphone directly Other sizes require an adapter Input impedance Greater than 1 GO less than 2 pF Signal limit 11 VAC maximum Cable attachment Capable of driving up to a 15M cable with negligible signal loss Meters Input impedance 20 KQ in series with 11 uF capacitance with 100 pF capacitance to ground Bandwidth The following bandwidth is typical for the instrument and preamp when set to the 40 140 dB range and F weighting Electrical signals are input to the sys tem with the 059 703 input adapter installed on the preamp e 0 1 dB down 20 Hz to 14 kHz e 1 0dBdown 5Hzto 25 2 kHz e 3 0 dB down 3Hz to 25 8 kHz Octave filters Number of bands Seven bands with center frequencies f ranging from 125 Hz to 8 kHz The octave filters are flat within 0 3 dB in each passband The half power points are at 0 707 f and 1 414 fe Octave skirts With respect to fe e f 2 frequencies Approximately 20 dB down e 2f frequencies Approximately 30 dB down e f 10 frequencies Approximately 70 dB down e 10f frequencies Approximately 95 dB down Instrument noise Noise floor depends
64. softkey While you can re load a file you cannot un delete a file so be cautious gt Loading or deleting a file mb In the Setup screen select File Sys and press a Select Session Directory and press a Select a file by pressing Wy Arrows To load a file press the Load softkey ROOM 053 672 Rev C Verifier 42 Reviewing Results Viewing past measurements 5 To delete a file press Awy to select appropriate file and press Delete softkey The display will state the file was deleted Press a key to return to the Data File screen To delete additional files repeat this step Press a repeatedly to return to the measurement screen IINE DATA FILE S002 S003 S004 a Data File screen e Retrieve your past session studies by selecting a file Softkeys DELETE OAD more Delete a Load b More c o o o eo Softkey menus Figure 5 9 Loading and deleting files amp 7 NOTE You may have dozens of files saved Press the More softkey to expand the file list for the appropriate selection 6 If you loaded a file please see next section Viewing Past Measurements Viewing past measurements 053 672 Rev C Completed studies and sessions called past studies and sessions are stored on the instrument s memory card You can view past measurements by first retrieving the study or session The results will be played back in accordance with the analysis type that was selected
65. ssible on a few of the Verifier s screens such as the Calibrate and File System screens 7 Altfkey The Altf key or Alternate functions key is used to view select and apply the captured curve pop up screen 8 Enter key Used frequently to execute an action Typically used after you have first pressed one or more arrow keys to make a selection 9 Left Right arrow keys Used to navigate right through menus and or data 10 On Off and Esc keys Used to turn on turn off and to Escape or move back one screen Table 2 1 Keypad Explained Quick Start Turning on 1 To turn on the Verifier press the On Ott Esc amp key until the start screen appears 053 672 Rev C Verifier 10 Quick Start Start screen Start screen The Start screen is the first screen you see when you power on and the last screen you see when you shut down For a quick up and running instrument the Verifier welcomes you in the STI PA measurement screen Graphical display of the STI PA results Figure 2 4 Verifier start screen Navigating With the Verifier there are two measurement screens and one setup menu to navigate through To select one of these screens or menus press the Right Left lt gt keys The Enter key is used to select parameters move between setup columns and will also toggle through some of the settings The Up Down arrow W keys are primarily used to select setup parameters The On Off Esc X99 key is also used a
66. st and language characteristics can be customized to suit your needs and preferences These settings can be viewed or changed in the Display screen e Language There are six different languages to choose from which include English French German Spanish Portuguese and Italian A change in lan guage takes effect when you exit the Language screen E Backlight The Verifier is shipped with the backlight feature set to manual mode which allows you to turn on off by pressing the backlight key The backlight feature has an optional timed setting for various second intervals ranging from 1 second to 60 seconds Once a timed setting is activated and you press the backlight key the backlight will illuminate for the selected interval i e 10 seconds and then turn off M NOTE Backlighting consumes energy at an increased rate Leaving it on while operating with batteries will decrease battery life by up to 10 e Contrast The contrast adjustment affects all pixels in the LCD screen The greater the contrast setting the darker the display will be and vice versa M NOTE If the contrast level is set too high icons and the RunTime clock in the Status Region of the display can be ghosted visible in this display although they re not supposed to show Reduce setting to avoid ghosting Changing the display settings language backlight and contrast 1 Open the Setup screen e From the STI PA Measurement Start screen press the Left
67. stem or alarm system e he average GB level is displayed when in stop mode amp 7 NOTE the instrument will display the Las when in stop mode This is also called survey mode U0 00 00 00 Stop mode Average dB level Displayed while in stop Range mode Press up down arrows to adjust the range values Average decibel Figure 5 1 Level set up and average decibel level Preparing to measure Before you begin measuring there are a couple items to consider e Understanding sessions and studies e Adjusting the measurement range before running a study Please refer to the Measures setup screen on page see 17 for details The following table explains how the data is stored on the instrument Storing Data Explanations A session is comprised of one or more studies and uses data derived or accumulated from those studies to arrive at session results With the Verifier you may want to organize your data into sessions when you are taking measurements in various zones If for example you want to take 3 STI PA measurements within one zone you could store all of this data as a session by pressing Run Pause Run Pause Run Pause and then pressing Stop The data in the one zone will now be considered studies within the one session Studies are periods in a session during which measurements are acquired processed and saved by the instrument The duration of each study period is called the study s run time Table 5 3 Ses
68. surement value displayed graphically Measurement value Figure 4 2 Calibrating the Verifier 6 Allow the measurement to stabilize and then press AW Arrows to set 114 0 dB 7 Press Enter a key to store the new calibration The Calibration History screen will reappear with the new calibration values in the display IMI W 00 00 00 CAL CORN CALIBRATE Displays pre CALIBRATION HISTORY calibration PRE CAL 114 0 dB information 11 54 19 30 JAN 2009 Figure 4 3 Pre Calibrate history screen 8 Press On Off Esc e key to exit the Calibrate screen 053 672 Rev C Verifier 28 Communications Attaching the calibrator to the Verifier 9 Fora Post Calibration ensure the Verifier is in Pause mode Essentially run a measurement and it will pause after 15 seconds The Pause indicator will appear at the top of the display Then repeat the Calibration steps above and press Enter to store the Post Calibration information A sample screen is displayed below with post calibration history I ll 00 00 15 CAL Pause indicator CALIBRATE CALIBRATION HISTORY Post Cal PRE CAL 114 0 dB E pm 11 54 19 30 JAN 2009 information POST CAL 114 0 dB 06 22 18 30 JAN 2009 Figure 4 4 Post Calibrate history screen Communications The Verifier has both USB and RS 232 communication channels The majority of users should only require USB communications which is vastly faster than the RS 232 channel which is intended for low speed modems and GP
69. the Verifier to your PC 053 672 Rev C Double click on the SES file you wish to export to Excel or XML see Figure 5 12 File Edit View Favorites Tools Help o Back 2 d Search lig Folders x ie fi Address a E DATA o pc SLM studies Double click to ize Type 16KB SES File export LJ My Documents 16KB SES File Ej x My Computer Se Local Disk C Figure 5 12 example of sound level meter studies e Note if you want to export all of the files click on the first file then follow step 8 When the first study runs return to step seven and follow step 8 Continue through this process until you have viewed all of your studies A SES Translator dialogue box will appear To export to an Excel File select Run od SoundPro SES Translator File Run File C Program Files Quest Export as xL5 Excel Spreadsheet Optional Components Logged Data Statistics and Exceedence Export Optional select drop down arrow to choose XML Accumulatars Overall Progress X Component Progress A TA Figure 5 13 Verifier SES Translator Export dialogue box Verifier 49 Viewing results in Excel and file converter tool Auxiliary connector e In Figure 5 14 it displays Verifier measurement data exported to Excel The summary data is shown on the first worksheet and each study is shown in subsequent sheets See Figure 5 15 as an example Verifier Serial Humber BIFO
70. to start the study NOTE f you want to measure background noise prior to the STI PA testing first capture curves or background noise and then apply this during your study See Captured Curves After a 15 second countdown either a STI or CIS level is displayed with a pass fail message The technician sound tester moves throughout the building and measures in all zones rooms NOTE A zone room is typically a room 20x20 More than one measurement may be required if the room exceeds this size The tests are noted as pass fail NOTE the past tests can be reviewed and loaded via the File System screen The figure below depicts obstacles that mask the quality of the speech path when conducting a Speech Intelligibility measurement A B C D E bd test ta message 60 5 dB 65 0 dB 69 7 dB 69 9 dB 67 6 dB 61 4 dB 53 7 dB e Speedofspeech Signal frequency Signal frequency Reverberation mE e Articulation e Internal noise e Internal noise masking echoes MEL eo 053 672 Rev C Verifier 34 Measuring and reviewing results About STI PA measurements amp modulation screen results About STI PA measurements amp modulation screen results 053 672 Rev C The test signal is derived from 7 octave band signals that encompasses a combination of vowels and syllables from common speech There are 14 modulating frequencies that emulate a male female s speech patterns The STI method is based on the determin
71. when the measurements were made gt Viewing a past session 1 Load the session from the memory card see section above Loading and deleting files 2 Once loaded press e key and the STI PA measurement screen will appear NOTE The run and pause indicators will appear on the top of the screen indentifying the measurement results as a past session 3 To view either the STI PA measurement results or the modulation measurement results press the left or the right arrow 4 When you are ready to exit the past session mode press the Stop key 5 To view additional past sessions please repeat steps 1 4 Verifier 43 Memory card Auxiliary connector Memory card The memory card supplied with the instrument is used to store session and configuration files If you run studies and sessions without a memory card it will not store session files Once you press stop to close the session the information is lost Essentially lack of a memory card converts a multi session instrument into a single session instrument Compatibility Steps have been taken to make sure the Verifier is compatible with as many SD cards as possible Because of the many SD card manufacturers and the varying low level formats they use Quest Technologies can only guarantee operation with cards available from Quest Technologies If you use a card not supplied by Quest it should be no larger than 2 GB and have a FAT16 format We recommend those manufa
72. ystem MNS sd a 1 Factors with speech inteligibilly s oci et D date bee di 2 MedasureiTiellis o eee seiten ce np MO HReU rer A 2 Speech transmission Index SU e M 2 eT scaleor lS scale explained onrak Mense EA Rte tete a up ad uelit Ue a pu M enne E ed 3 SpesohintelligibilitV Secaled o T1 oia eios tee oor bn eoa need eee de iem t e ce cl ee modo be eru uda 3 Common intelligibility scale GS aes sce nc cccce eoa o eco 3 ZONE TE 4 When to take STI PA measurements cccccceceeeseeeeeceeeesseeeeeeceeeuseeeeeeeseausaeeeeeeeseaaeeeeeesseauseeeesensenagseeees 4 CHAPTER COMO are E m 5 CHECKING die A dti R 5 Microphone and actos SOMOS nda is 6 A A An 6 Attaching the preamp and microphone viii at ek vent e Fei pia A A AAA AAA 7 DIS DIAY and ACY OAC MERERETUR LLLA NE 8 mella pais 8 QUEE Sta ERU RR ERREUR RUN PRIMER AERE ae O EA A Om LOL RTT EUR 9 TONNO ON ee TP E 9 SIRE gt E Ne mR RE A 10 Nada sados AAA 10 A 11 Screeninaicalors explanada lider li iear 11 Providing PIN DOO onem 12 STAMINA Pato tri ina 12 Battery DOWER explain b dua E E a A nadceeu due hag E 13 CE CKING YDE serrera E a atte 13 Power supply or auto adaptei uus meet vacsyes ue e Rus i ende a e e dae c ve i eo Oe ae E a 14 Connector panel hardware id A eet 15 Memory eard Slol mE 15 A AO E DU cU n 15 AGIDO PONa E A 15 ISI M ACK REN

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