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Rion NL-42A Instruction Manual Download Page 1

3-20-41 Higashimotomachi, Kokubunji, Tokyo 185-8533, Japan

https://www.rion.co.jp/english/

INSTRUCTION MANUAL

Sound Level Meter

NL-42A / NL-52A

Summary of Contents for NL-42A

Page 1: ...3 20 41 Higashimotomachi Kokubunji Tokyo 185 8533 Japan https www rion co jp english INSTRUCTION MANUAL Sound Level Meter NL 42A NL 52A...

Page 2: ......

Page 3: ...built into the NL 42A NL 52A The manual covers the communication protocol use of control commands for the sound level meter format of data output by the sound level meter and other topics Technical No...

Page 4: ...ii...

Page 5: ...information about the unit Controls and Functions Briefly identifies and explains the operation keys and connectors and all other parts of the unit Preparations Explains how to check the unit before u...

Page 6: ...e factory default settings of the unit Setup Files Explains how to start up the unit using settings saved in a setup file Optional Accessories Explains how to use the optional microphone extension cab...

Page 7: ...e fully understood and observed Caution Important Disregarding instructions printed here incurs the risk of damage to the unit Additional information about using the unit These notes do not directly a...

Page 8: ...vi...

Page 9: ...exposure level LZE LZIE Lmax Lmin Maximumsound level Maximum A weighted sound level LAFmax LASmax LAImax Maximum C weighted sound level LCFmax LCSmax LCImax Maximum Z weighted sound level LZFmax LZSma...

Page 10: ...viii...

Page 11: ...Equivalent continuous A weighted sound level A LAeq T LAeq T LAeq T LCeq Equivalent continuous C weighted sound level C LCeq T LZE Sound exposure level Z LAE A weighted sound exposure level A LAE LAE...

Page 12: ...a dry cloth and let it dry in a well ventilated place The power cord used to connect the optional AC adapter to an AC outlet is a 100 V AC cord for domestic use in Japan which is compliant with Japane...

Page 13: ...lar intervals Contact the supplier Dispose of the unit and of batteries only according to national and local regulations at the place of use Do not remove the seal on the rear of the unit If the seal...

Page 14: ...roduct is warranted up to the product purchase price against defects in material Never format optional program cards such as the NX 42EX and NX 42WR with SD memory card formatting software such as SD...

Page 15: ...rinter DPU 414 22 Connection to a level recorder LR 07 LR 20A and data recorder DA 20 DA 21 DA 40 24 Connection to a computer 25 Setting the date and time 26 Measurement in a dark location 27 Sub chan...

Page 16: ...l Leq measurement 74 Sound exposure level LAE Maximum sound level Lmax Minimum sound level Lmin and Percentile sound level LN measurement 79 Additional processing value measurement 80 Card capacity an...

Page 17: ...ettings 111 Setup Files 113 Resume function 113 Loading a start up file at startup 113 Restoring default settings factory default settings 114 Using setup files 115 Setting a start up file 118 Optiona...

Page 18: ...xvi...

Page 19: ...can be operated comfortably by persons who are inexperi enced in measurements The unit is equipped with AC OUT and DC OUT connector I O connector and USB connector as the output connectors Since the...

Page 20: ...uding octave and 1 3 octave band real time analyses FFT analysis and additional measurements such as time weighting I impulse In addition to the measurements of sound level equivalent continuous sound...

Page 21: ...ther enhance the range of applications for the product Level recorder LR 07 For recording sound level changes over time Data management software for environmental measurement AS 60 AS 60RT Total softw...

Page 22: ...4 Outline FFT Analysis Program NX 42FT For performing FFT analysis Once the optional Extended Function Program NX 42EX has been installed it can no longer be uninstalled...

Page 23: ...tions Before using the unit and before putting it away always check that the microphone and microphone grid has not become loose If this has happened refasten the microphone grid firmly and then use o...

Page 24: ...rement The back erase function makes it possible to exclude data from an interval of several seconds 1 3 or 5 second s before the key was pressed from processing During pause in manual processing the...

Page 25: ...nu the backlight will turn itself off automatically after the preset time Also press this key when you want to check the measurement settings in power saving standby condition see page 61 POWER key Tu...

Page 26: ...so be connected here Important To prevent the risk of damage do not use any AC adapter and battery pack other than the specified type SD card slot The SD memory card can be inserted in this slot I O c...

Page 27: ...removed Model plate Shows various information including model number of the unit microphone number preamplifier number serial number and date of manufacture Tripod mounting thread The unit can be moun...

Page 28: ...ries from the unit or disconnect the AC adapter plug from the outlet and then contact your supplier Note When the AC adapter is connected the unit will be powered from the adapter also when batteries...

Page 29: ...en the lid Caution Take care not to reverse the and po larity when inserting the batteries Incorrect setting of the batteries may cause battery explosion and leakage To prevent the risk of battery flu...

Page 30: ...N different according to the backlight brightness setting When either AC OUT or DC OUT is ON battery life will be about 25 shorter see pages 57 to 58 When auto store is used battery life will be 20 to...

Page 31: ...ll be charged It will also be charged while power to the unit is off if external power is connected The relationship between charging time and retention period is shown below A full charge of the back...

Page 32: ...l the unit is turned off several seconds When the power off screen appears release the POWER key Important Remove the batteries from the unit if it is to be stored for a long time with the POWER key s...

Page 33: ...to the DC IN connector In this case the POWER key on the operation key panel of the unit has no effect A B power on mode switch Important When using the unit with the switch in the B position do not...

Page 34: ...sure flat frequency response when the windscreen is mounted 1 Press the MENU ENTER key to bring up the menu list screen 2 Use the keys to select Measure and press the MENU ENTER key The measurement se...

Page 35: ...se sound field 1 Press the MENU ENTER key to bring up the menu list screen 2 Use the keys to select Measure and press the MENU ENTER key The measurement setting screen appears 3 Use the keys to select...

Page 36: ...data is being read or written to the card the data may be destroyed Use SD memory cards provided by Rion The performance of other cards is not guaranteed Note that we assume no responsibility for any...

Page 37: ...B 10 m EC 04E 100 m reel 5 m connection cable Important With long extension cables the cable capacitance restricts the upper measurement frequency and measurement level For details refer to the Techni...

Page 38: ...with the fastening screw 3 When mounting the microphone on a tripod first fasten the microphone holder supplied with the extension cable to the tripod Then insert the extension cable connector into th...

Page 39: ...e with the unit mounted on it Do not carry the unit with the tripod attached You may be injured by tripping over or hitting against the unit Important Fasten the unit directly onto a tripod using the...

Page 40: ...MENU ENTER key to bring up the menu list screen 2 Use the keys to select I O and press the MENU ENTER key The I O screen appears 3 Use the keys to select Communication Interface and press the MENU ENT...

Page 41: ...t DIP SW setting mode Dip SW 1 1 OFF Input Serial 2 ON Printing Speed High 3 ON Auto Loading ON 4 OFF Auto LF OFF 5 ON Setting Command Enable 6 OFF Printing 7 ON Density 8 ON 100 Dip SW 2 1 OFF Printi...

Page 42: ...h an input connector of level recorder LR 07 LR 20A and data recorder DA 20 DA 21 DA 40 using the optional BNC Pin output code CC 24 as shown below The performance of other cables is not guaranteed BN...

Page 43: ...ected via USB without having to install a USB driver Note If Auto mode store is being carried out the unit will not be recognized as a removable disk by the computer To control the setting of the soun...

Page 44: ...y to complete the setting change The clock starts moving with the new setting 7 Press the START STOP key to return to the measurement screen Important If the unit is not to be used for an extended per...

Page 45: ...ght auto off screen appears 5 Use the keys to select the automatic turn off interval 30 sec 3 min Continue and press the MENU ENTER key 6 Use the keys to select Backlight brightness and press the MENU...

Page 46: ...28 Preparations System screen Backlight LCD settings screen...

Page 47: ...4 Use the keys to select Sub Channel Settings and press the MENU ENTER key The ON OFF setting screen appears 5 Use the keys to select ON and press the MENU ENTER key 6 Use the keys to select Frequency...

Page 48: ...he sound level data of sub channel is not saved it will not be displayed on the recall screen see pages 67 and 90 When the optional Extended Function Program NX 42EX is not installed the time weightin...

Page 49: ...tm5 Maximum I time weighted equivalent continuous sound level LAImax When the optional Extended Function Program NX 42EX is not installed LAIeq and LAImax cannot be measured The frequency response of...

Page 50: ...ress the MENU ENTER key The confirmation screen appears 4 Press the MENU ENTER key to execute the eco setting 5 Press the START STOP key to return to the measurement screen When the eco setting is exe...

Page 51: ...MENU ENTER key The ON OFF setting screen appears 5 Use the keys to select ON and press the MENU ENTER key 6 Use the keys to select Comparator level and press the MENU ENTER key The comparator level s...

Page 52: ...ment using the optional comparator output cable CC 42C as shown below The performance of other cables is not guaranteed Important Do not insert the cable connector to the I O connector reversely BNC c...

Page 53: ...he comparator will not function if sub channel SUB AP is selected as comparator band The comparator signal output timing pattern is as shown below Note When the sub channel SUB AP is selected as compa...

Page 54: ...creen appears 3 Use the keys to select Language and press the MENU ENTER key The language screen appears 4 Use the keys to select the type of language and press the MENU ENTER key 5 Press the START ST...

Page 55: ...key A calibration screen such as shown below appears Verify the Internal Calibration is displayed in the upper part of the screen If Acoustic Calibration is shown in the upper part of the screen pres...

Page 56: ...ation The calibration value indication will always be 6 dB below the upper limit of the level range setting Using the AC or DC output calibration of connected equipment can be car ried out as follows...

Page 57: ...adapter on the coupler of the Sound Calibrator NC 75 NC 74 or the Pistonphone NC 72B NC 72A 3 Insert the microphone very carefully and slowly all the way into the coupler Important Be very careful wh...

Page 58: ...NL 52A 94 0 dB When using NC 72B NC 72A NL 42A 114 0 dB NL 52A 114 0 dB 7 Press the CAL key The measurement screen returns 8 Turn off the Sound Calibrator NC 75 NC 74 or the Pistonphone NC 72B NC 72A...

Page 59: ...ion of output Measurement in progress symbol Setting of output etc Current date and time Key lock Touch panel lock USB RS 232C connection Battery status Lp value display Time weighting Frequency weigh...

Page 60: ...Shows the selected mode for storing data in memory Manual Auto or Timer Auto see page 85 Note When the optional Extended Function Program NX 42EX is not installed the Auto and Timer Auto cannot be sel...

Page 61: ...ON Measurement in progress symbol When a measurement is in progress the symbol flashes The indicator LED also flashes in red During auto store the symbol also flashes The indicator LED flashes in red...

Page 62: ...e page 58 Battery status When the unit is operated on battery power you should regularly check this indication The number of white segments will decrease as the batteries get used up When the indicati...

Page 63: ...A weighting and Z weighting are selected in either channel the under range indication is based on the A weighted measurementvalue WhenC weightingandZ weighting are selected the under range indication...

Page 64: ...nel Settings to ON on the Measure screen from the menu see page 29 Processed data display screen other than Lp value The measurement items which are set to ON on the Display screen from the menu will...

Page 65: ...ding the Display Time Level screen While Time Level is set to ON on the Display screen from the menu the time level screen will be displayed by pressing the DISPLAY key on the measurement screen see p...

Page 66: ...on the display for about 1 second When START STOP key was pressed and processing has started When PAUSE CONT key was pressed and operation is paused When PAUSE CONT key was pressed and processing has...

Page 67: ...TER key brings up the menu list screen as shown below Use the keys to select the desired menu and press the MENU ENTER key Pressing the DISPLAY key displays explanation screen of the item that has bee...

Page 68: ...requency weighting characteristic for the main channel Each press of the Freq on the screen with the finger cycles through the following settings A C Z Time Selects the time weighting characteristic f...

Page 69: ...list screen Pressing the START STOP key switches back to the measurement screen Read Save setting Displays the screen to save a setting for the unit and read the saved setting Select Read Save setting...

Page 70: ...ss the MENU ENTER key Card Format can only be selected when SD memory card is inserted Formats the inserted SD memory card Select Card Format and press the MENU ENTER key The confirmation screen appea...

Page 71: ...he unit Select Program Information and press the MENU ENTER key The program information screen appears Touch Panel Lock Displays the screen to select whether to set the touch panel lock function to pr...

Page 72: ...that has been selected Pressing the PAUSE CONT key switches back to the menu list screen Pressing the START STOP key switches back to the measurement screen Leq LE Lmax Lmin Additional processing pro...

Page 73: ...U ENTER key The ON OFF setting screen appears see page 47 Use the keys to select the ON OFF setting and press the MENU ENTER key Time Scale Displays the screen to select time scale of time level scree...

Page 74: ...raph on the measurement screen Select Output Level Range Lower and press the MENU ENTER key The lower limit of bar graph screen appears Use the keys to set the value 20 to 80 10 dB step Then press the...

Page 75: ...elected Pressing the PAUSE CONT key switches back to the menu list screen Pressing the START STOP key switches back to the measurement screen AC OUT Displays the screen to select the type of frequency...

Page 76: ...page 33 Note When the optional Extended Function Program NX 42EX is not installed the comparator cannot be selected Communication Interface Displays the screen to select a type of communication with a...

Page 77: ...Pressing the START STOP key switches back to the measurement screen As for the store screen the displayed set item is different depending on the set store mode For details please refer to Store Operat...

Page 78: ...e total measurement time screen appears User setting Manual mode and Auto mode When Manual is selected from Measurement Time of the Manual mode or Total Measurement Time of the Auto mode the user sett...

Page 79: ...screen to select whether to set the sleep mode Select Sleep Mode and press the MENU ENTER key The ON OFF setting screen appears When sleep mode is enabled the unit will enter a power saving standby co...

Page 80: ...en selected Pressing the PAUSE CONT key switches back to the menu list screen Pressing the START STOP key switches back to the measurement screen Frequency Weighting Main Displays the screen to select...

Page 81: ...screen to select whether to set the diffuse sound field correction Select Diffuse Sound Field Correction DF and press the MENU ENTER key The ON OFF setting screen appears see page 17 Delay Time Displa...

Page 82: ...Displays the screen to select calculation date for percentile sound level LN Select LN Mode and press the MENU ENTER key The LN mode screen appears Use the keys to select the calculation date Lp Leq 1...

Page 83: ...ta This is displayed when Manual measurement processing data exist Select Store data and press the MENU ENTER key Screenshot BMP Saves the displayed measurement screen to the internal memory in BMP bi...

Page 84: ...switch function screen is selected using the key Pressing the PAUSE CONT key switches back to the menu list screen Pressing the START STOP key switches back to the measurement screen Option Select a...

Page 85: ...switches back to the measurement screen Note It may take some time to read data and display the recall screen if the volume of stored data is large Save location of data Data files The save location o...

Page 86: ...MENU ENTER key The file processing screen appears Confirm the data Displays the measurement data of the selected data file Select Confirm the data and press the MENU ENTER key You can use the keys to...

Page 87: ...NU ENTER key Copy to the card only internal memory data Copies the selected internal memory data file to the inserted SD memory card Select Copy to the card and press the MENU ENTER key The store name...

Page 88: ...lect this screen to record the waveform using optional program NX 42WR If NX 42WR is not installed it is not possible to select this screen For details please refer to the instruction manual of Wavefo...

Page 89: ...OUT OFF MAIN Comparator 1 v Comparator ON OFF Comparator level Comparator band Communication Interface OFF USB RS 232C When RS 232C is selected Baud rate Store Store Mode Manual Auto 1 Timer Auto 1 Ma...

Page 90: ...evel 5 values must be selected beforehand To display measurement values other than sound level you need to set desired items to ON on the Display screen from the menu list screen Also make sure that t...

Page 91: ...liance with IEC or another standard set the frequency weighting and time weighting characteristics as required by that standard The time weighting characteristic can be set even on the measurement set...

Page 92: ...ot affect a measurement result of equivalent continuous sound level The time weighting characteristic can be set even on the measurement setting screen in the menu list screen Note The unit performs h...

Page 93: ...Measurement Time and press the MENU ENTER key The measurement time screen appears 13 Use the keys to select the measurement time 10s second 1min minute 5min 10min 15min 30min 1h hour 8h 24h Manual and...

Page 94: ...If necessary set the back erase time When PAUSE CONT key is pressed while performing a measurement the previous data is removed for the preset back erase time Use the keys to select Measure and press...

Page 95: ...that overload or under range data are comprised in the processed values Important During measurement the keys function as markers for the case the store mode is set to Auto or Timer Auto and the Lp s...

Page 96: ...k whether Leq is set to ON on the setting screen If the indication OVER is shown the processed data include an overload condition If the indication UNDER is shown the processed data include an under r...

Page 97: ...E maximum sound level Lmax minimum sound level Lmin and percentile sound level LN are all measured at the same time as the equivalent continuous sound level Leq When the equivalent continuous sound le...

Page 98: ...hted equivalent continuous sound level LCeq C weighted peak sound level LCpeak Z weighted peak sound level LZpeak I time weighted equivalent continuous sound level LAIeq Takt max A weighted sound leve...

Page 99: ...hannel settings Measurement value for each setting Frequency weighting Time weighting Leq A I Impulse LAIeq C F Fast LCeq C S Slow Lmax A I Impulse LAImax Lpeak C F Fast LCpeak C S Slow Z F Fast LZpea...

Page 100: ...onal Processings and press the MENU ENTER key The setting the additional processings screen appears 5 Use the keys to select the additional processing value and press the MENU ENTER key The measuremen...

Page 101: ...store interval set SD memory card capacity L p store interval 512 MB 2 GB 32 GB 100 ms 132 hours 531 hours 8 496 hours 200 ms 366 hours 1 473 hours 23 568 hours 1 s 1 832 hours 7 368 hours 117 888 ho...

Page 102: ...SD memory card capacity Sampling frequency Hz 512 MB 2 GB 32 GB 48 k 1 hour 4 hours 40 min 74 hours 40 min 24 k 2 hours 10 min 9 hours 20 min 149 hours 20 min 12 k 4 hours 20 min 18 hours 50 min 301 h...

Page 103: ...se SD memory cards provided by Rion The performance of other cards is not guaranteed see page 102 Note Prior to measurement it is recommended first to format the memory card for storing data with this...

Page 104: ...red continuously and automatically This function becomes available when an SD memory card is inserted This is useful when recording the sound level waveform The store interval can be selected from 100...

Page 105: ...he internal memory for store is not possible Note A processing start time is used for a time stamp of measurement and processed data For example when performing one minute processing with Leq store th...

Page 106: ...y be stored on the card The procedure is as follows 1 Press the POWER key to turn the unit on 2 Press the MENU ENTER key to bring up the menu list screen 3 Use the keys to select Store and press the M...

Page 107: ...n 1h 8h 24h Manual and press the MENU ENTER key 7 3 When Manual is selected User setting is displayed on the store screen Select User setting and press the MENU ENTER key 7 4 The measurement time sett...

Page 108: ...tly displayed address will be overwritten If the address is shown in red it contains data Take care not to accidentally overwrite data Note When the number of address for storing data is 1000 it will...

Page 109: ...nd press the MENU ENTER key 5 The confirmation screen appears Select Yes and press the MENU ENTER key The selected data are deleted Copying stored data in internal memory to SD memory card The procedu...

Page 110: ...ata using Auto mode is as follows Confirm the SD memory card has been inserted in the card slot 1 Press the POWER key to turn the unit on 2 Press the MENU ENTER key to bring up the menu list screen 3...

Page 111: ...TER key 7 3 When Manual is selected User setting is displayed on the store screen Select User setting and press the MENU ENTER key 7 4 The total measurement time setting screen appears Set arbitrary t...

Page 112: ...start measurement The measurement value will be stored automatically at every interval set for Lp store interval and Leq calculation interval When it is completed the address is incremented by one ste...

Page 113: ...marker 2 keys now function as markers Pressing a key will insert the corresponding marker into the screen 4 Wait until the preset measurement time has ended or stop the mea surement with the START STO...

Page 114: ...the data and press the MENU ENTER key The data stored in memory are displayed Deleting stored data The procedure for deleting data stored in memory using Auto mode is de scribed below 1 Press the MEN...

Page 115: ...using Timer Auto mode is as follows Confirm the SD memory card has been inserted in the card slot 1 Press the POWER key to turn the unit on 2 Press the MENU ENTER key to bring up the menu list screen...

Page 116: ...l set to OFF Lp is not stored Lp Leq Lmax Lmin are stored when 100ms is selected In other cases only Lp Leq when Leq 1s is selected is saved 8 Set the Leq calculation interval 8 1 Use the keys to sele...

Page 117: ...t the stop time The measurement is stopped at the preset stop time 10 1 Use the keys to select Stop and press the MENU ENTER key The stop time setting screen appears 10 2 Use the keys to select the se...

Page 118: ...mode select ON and press the MENU ENTER key 13 Press the START STOP key Measurement will start at the preset start time The measurement value will be stored automatically at every interval set for Lp...

Page 119: ...data is 100 10 when using 1 second sampling During Timer Auto mode the pause function cannot be used During Timer Auto mode the address indication is based on number of Leq calculation The number of...

Page 120: ...e file of one per one address is made About SD memory cards The memory cards that can be used in this unit are SD memory cards Be sure to use optional SD memory cards provided by Rion SD memory cards...

Page 121: ...B driver for USB communication will appear when the unit is connected to a computer Note When using spreadsheet software or other programs on a computer to retrieve data from SD memory cards some prog...

Page 122: ...e When an SD memory card is formatted initialized all data present on the card will be lost In the following cases you should format the SD memory card When using the SD memory card in the NL 42A NL 5...

Page 123: ...PLAY key the Screenshot was saved to the card message is displayed and the current screen contents will be saved as a bitmap file on the SD memory card Store target folder Screenshot File name Time at...

Page 124: ...MENU ENTER key When Interlock is selected the main channel signal is output as AC signal weighted by the frequency set at a measurement When A C or Z is selected the main channel signal is output as A...

Page 125: ...50 40 30 20 10 FS 10 Scale dB FS Full scale value Ideal characteristics of the display value and the output voltage Delay The unit incorporates an A D converter which converts the microphone input sig...

Page 126: ...nector located at the bottom of the unit as a signal passing through the frequency weighting rms detection and logarithmic compression processes The signal is a level converted DC signal having the fr...

Page 127: ...80 70 60 50 40 30 20 10 FS 10 The relationship between the display value shown by the unit and the output voltage is indicated below When the unit is set to the calibration mode the output signal outp...

Page 128: ...page 22 For comparator output see page 33 Note The RS 232C communication and the comparator output cannot be used at the same time Comparator output Comparator output approx 480 Tr Time Signal output...

Page 129: ...F Delay time OFF Windscreen correction WS None Diffuse sound field correction DF OFF Sub channel settings OFF Sub channel frequency weighting A Sub channel time weighting F Fast LN Mode Lp Leq ON LE O...

Page 130: ...ery type Alkaline Touch panel lock OFF When you turn power to the unit on while holding down the START STOP key the unit will be initialized to the above settings When wishing to set the unit to the f...

Page 131: ...e in serted SD memory card a selection screen such as shown at bottom left will appear Select Internal Memory or SD to load the respective startup file Selecting Cancel at the screen will cause the re...

Page 132: ...creen appears 2 Use the keys to select Read Save setting and press the MENU ENTER key The setting operation screen appears 3 Use the keys to select Load Default Settings and press the MENU ENTER key T...

Page 133: ...nt settings 1 Use the keys to select System Language and press the MENU ENTER key The system screen appears 2 Use the keys to select Read Save setting and press the MENU ENTER key The setting operatio...

Page 134: ...ad the setting and press the MENU ENTER key The confirmation screen appears 5 Use the keys to select Yes and press the MENU ENTER key The file contents of the selected number will be reflected to the...

Page 135: ...g operation screen appears 3 Use the keys to select the desired number and press the MENU ENTER key The setting file processing screen appears 4 Use the keys to select Copy and press the MENU ENTER ke...

Page 136: ...press the MENU ENTER key The setting operation screen appears 4 Use the keys to select Startup File None of Internal Memory or SD and press the MENU ENTER key The Save the setting Cancel selecting sc...

Page 137: ...perator Six different cable types with lengths from 2 to 100 meters are available as listed in the table below It is also possible to combine multiple cables Important With long extension cables the c...

Page 138: ...ons page 10 should be completed For details about printer operation refer to the documentation supplied with the printer Printing a measurement screen The steps for printing hard copy of a measurement...

Page 139: ...select Recall and press the MENU ENTER key The recall screen appears 3 Use the keys to select the desired data and press the MENU ENTER key The data processing screen appears 4 Use the keys to select...

Page 140: ...print screen appears 7 Use the keys to select Range Setting Print and press the MENU ENTER key The range setting print screen appears 8 Set the Start Addr and End Addr and then select Print Execution...

Page 141: ...der press the MENU ENTER key to bring up the menu list screen 2 Use the keys to select I O and press the MENU ENTER key The I O screen appears 3 Use the keys to select AC OUT and press the MENU ENTER...

Page 142: ...to the measurement mode 9 Set the time weighting characteristic at the level recorder 10 Set the Output Level Range Upper and Output Level Range Lower on the Display screen The Output Level Range Uppe...

Page 143: ...ns The unit can make use of a range of program options For details on usage refer to the documentation supplied with the respective program Note Once the Extended Function Program NX 42EX has been ins...

Page 144: ...king China RoHS KC mark Measurement function Simultaneous measurement of all items using selected time weighting and frequency weighting Main processing Main channel Instantaneous sound pressure level...

Page 145: ...additional processing is associated with the frequency weighting of the sub channel Therefore LAIeq or LAImax can be selected when the sub channel has A weighting LCeq or LCpeak can be selected when t...

Page 146: ...z Linear operating range All pass A weighting 113 dB Measurement frequency range 20 Hz to 8 kHz NL 42A 10 Hz to 20 kHz NL 52A Reference frequency 1 kHz Reference sound pressure level 94 dB Frequency w...

Page 147: ...ound field correction Corrects frequency response to meet the standard ANSI ASA S1 4 in diffuse sound field Turning on off the correction function is done from the menu screen Delay time Sets a delay...

Page 148: ...ng of store data Setup memory Up to five setup configurations can be saved in the internal memory and SD memory card for later recalls The unit can be started using the setting file stored in the inte...

Page 149: ...ble disk USB connector is used Communication device class Allows control with communication commands using communication device class However the settings related to store data transfer and store oper...

Page 150: ...ons for use 10 C to 50 C 10 to 90 RH no condensation Water and dust resistant performance IP code IP 54 except microphone unit Protection against harmful dust and water splashing from any direction Di...

Page 151: ...e RS 232C serial I O cable CC 42R Data management software for environmental measurement AS 60 Data management software for environmental measurement Includes the Octave and 1 3 Octave data management...

Page 152: ...Unit mm Dimensional Drawings Bottom view Front view Side view Rear view 33 76 250 134 Specifications...

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