CESVA SC202 User Manual
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CESVA SC202 User Manual

Sound level meter, spectrum analyser
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SC202
Sound level meter
Spectrum Analyser
USER'S MANUAL
M_SC202_v0005_20211105_EN

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  • Page 1 SC202 Sound level meter Spectrum Analyser USER’S MANUAL M_SC202_v0005_20211105_EN...
  • Page 3 founded in 1969 in Barcelona, has always engaged in the manufacturing of sound equipment and instruments with in-house R&D&I and patents. We belong to national and international committees for the establishment and revision of standards and regulations. has a fast and efficient distribution network in over 40 countries around the world.

  • Page 4: Table Of Contents

    Contents 1. What does this manual cover? 2. Equipment and literature 3. General device description 3.1 SC202 sound level meter and spectrum analyser 3.2 Main features of the SC202 3.3 Device parts 4. Inputs and outputs 4.1 Communication inputs/outputs 4.2 AC output 5.
  • Page 5 10. Check the device 10.1 Checking the SC202 11. Measuring and recording 11.1 Prior steps 11.2 Measuring 11.3 Make a recording 11.4 Overload indicator 11.5 "Under range" indicator 12. Menu 12.1 Access the menu 12.2 Areas of the menu 12.3 Move through the menu 13.
  • Page 6 17.2 Digital inputs and outputs 17.2.1 USB communication ® 17.2.2 Bluetooth communication. 17.2.3 WIFI 18. Accessories 18.1 Accessories supplied 18.2 Optional accessories 19. Technical specifications 19.1 REFERENCE CONDITIONS 19.2 MICROPHONES AND PREAMPLIFIERS 19.2.1 Microphone models and their main features 19.2.2 Sound field correction for periodic tests 19.2.3 Frequency response 19.2.4 Effect of the optional accessories on the microphone 74 19.2.5 Directional response...
  • Page 7 20. Maintenance and precautions 21. Tips for taking measurements 22. Firmware update and module activation 22.1 Firmware update 22.2 Activation of an optional module of the SC202 22.3 Activating an optional SC202 Link module 23. Functions 23.1 Nomenclature of functions 23.1.1 Sound level meter parameters...

  • Page 8: What Does This Manual Cover

    The fourth section develops other important topics such as the connection to the PC and accessories (chapters 17 and 18). The fifth section contains the technical specification of the SC202 sound level meter to know in detail the device you are working with (chapter 19).

  • Page 9: Equipment And Literature

    Equipment and literature 2. Equipment and literature The first step is to check that all the equipment and literature supplied with the device is there: Material included:  SC202 sound level meter  FN004 case  PV009 windscreen  3 x 1.5 volt alkaline batteries, AA (LR6) size ...

  • Page 10: General Device Description

    In addition, the device measures all the parameters simultaneously with the different time bases, frequency and temporal weightings. The SC202 is a sound level meter that complies with the specifications of the international standard IEC 61672 for Class 2, and the American standards ANSI S1.4 and ANSI S1.43 for Type 2, both for the response to incident sound waves...
  • Page 11  The screen of the SC202 provides a clear, sharp view in broad daylight; it also lights up automatically when the equipment turns on, allowing you to work even in low-light environments. PHILOSOPHY:  The SC202 maintains the philosophy of the instruments: versatility, simplicity and easy handling.

  • Page 12: Device Parts

    3.3 Device parts The following figure describes the most important parts of the SC202: Precision ½'' condenser microphone· The SC202 works with the P008 microphone. This type of microphone is removable. To move it away from the SC202 body, use the CN105 or CN110 cable.
  • Page 13 Chapter 3 General device description...

  • Page 14: Inputs And Outputs

    Inputs and outputs 4. Inputs and outputs This chapter lists the inputs and outputs of the SC202. It indicates how to identify them and how to extract data from them. The inputs and outputs of the SC202 are on the bottom of the device, protected by a removable protective cover.

  • Page 15: Keypad

    Keypad 5. Keypad This chapter describes the elements that comprise the keypad. The SC202 has a touchscreen, so that the keypad area contains only one key and two LEDs. FUNCTION Key to turn the SC202 on and off. And the screen.
  • Page 16 STATUS OFF: The measurement is stopped ( ) STATUS ON: The measurement is paused ( ) INTERMITTENT STATUS: The device is measuring ( ) or recording ( ). In summary: SC202 Screen Measurement POWER STATUS STOP PAUSE PLAY / REC...

  • Page 17: Screen

    This chapter defines the characteristics of the screen and details the information it displays. The SC202 has a 3.5” backlit colour touchscreen that allows immediate access to any type of screen or menu on the device. The data are presented both numerically and graphically.
  • Page 18 TIME: Shows the current time of the SC202 (hh:mm:ss). FILE: INDICATION SITUATION The final results are saved (see 16.1) A recording is made (see 16.2) A measurement that is stored in memory is displayed (see 16.4) There is no measurement on the screen A measurement is made (see 11.2)

  • Page 19: Work Area

    (see 13). 6.1.3 Screen area The SC202 has different screens for displaying the data (see 13). This area indicates which screen is being displayed (SLM, 1/1 or 1/3). To change the screen that is displayed (see 13.1).

  • Page 20: Available Actions Area

    LED will turn on in power ON mode (see 5). NOTE If the SC202 is to be left to measure for a long period of time, a image persistence effect may occur, to avoid this possible consequence it is recommended to turn off the screen.

  • Page 21: Power

    Power 7. Power The first operation to be performed, before switching on the SC202, is to power it. This chapter explains the different ways to do this, as well as the configuration options that affect power. 7.1 Types of power The SC202 can be powered by batteries or via a USB connection.

  • Page 22: Power By Usb

    When using external power (USB), it is recommended that you insert new batteries (see 7.1.1).  If you do not expect to use the SC202 for an extended period, remove the batteries from the SC202 to avoid potential damage caused by the batteries leaking.

  • Page 23: Assembling And Dismantling The Device

    Assembling and dismantling the device 8. Assembling and dismantling the device This chapter shows how to attach the microphone and preamplifier to the SC202, as well as all the accessories that can be installed around the microphone: windscreen, extension cable and outdoor kit.

  • Page 24: Extension Cable

    8.2 Extension cable The SC202's microphone is removable. This allows the microphone to be separated from the sound level meter and the operator. By doing so, the SC202 can be operated at a distance from the measurement point, avoiding potential interference.

  • Page 25: Switching The Device On And Off

    BY POWER To turn on the SC202, you only need to power the sound level meter through the USB port. In order for the sound level meter to be switched on by means of the power, the option must be activated (see 15.1.10).

  • Page 26: Sc202 Initial Self Test

    To prevent this from happening, we recommend that when the SC202 is to be turned on for a long period of time, you should turn the display off (whenever possible). This action, in addition to protecting the screen, will also save batteries (when running on batteries).

  • Page 27: Check The Firmware Version Of The Sc202

    To check the firmware version of the SC202, access the INFORMATION option in the menu (see 15.1.13). 9.2 Turn off the device To turn off the SC202, check that there are no measurements in progress press for a couple of seconds or remove the power from the USB port (if the option is activated (see 15.1.10)).

  • Page 28: Check The Device

    CB004 or CB012 Class 2, and follow the steps below: Place the SC202 in the calibrator, inserting the part of the microphone in the calibrator cavity. Make sure it has gone all the way into the cavity. There may be a certain amount of resistance, since the calibrator fits onto the sound level meter tightly.
  • Page 29 P008 microphone correction is -0.1 dB; i.e. the SC202 must be checked at 93.9 dB. Set the SC202 on a numerical sound level meter screen (see 13). As function to be displayed, select the sound pressure level with fast time averaging (FAST) L .

  • Page 30: Measuring And Recording

    However, with the recording, as they are measured, they are also saved in the memory of the SC202. So if the device is turned off, the data are preserved. At the end of a RECORDING, the time history of the measured functions and the final results will be saved in a register.

  • Page 31: Prior Steps

    11.1 Prior steps Once the SC202 is turned on, and the device verification has been carried out (see 10.1), verify that there is no measurement in progress . Then make the prior adjustments (see 15). 11.2 Measuring With the sound level meter on, press to start a measurement.

  • Page 32: Make A Recording

    ) the type of display screen can be changed. 11.4 Overload indicator The SC202 has an overload indicator for each function. If an overload occurs during the measurement, the indication will be added in front of the value of the function that has been affected by it.

  • Page 33: Under Range" Indicator

    11.5 "Under range" indicator The SC202 has an under-range indicator for each function. If the value displayed on the screen is lower than the lower limit of the linearity range, the indication will appear in front of the value of the function that meets this condition. This indication will only appear while this condition exists.

  • Page 34: Menu

    Menu 12. Menu With the SC202 menu it possible to:  Manage memory and the saved registers.  View the registers.  Configure the settings of the SC202.  Consult the device's own information. 12.1 Access the menu Once the SC202 is on, click on .

  • Page 35: Areas Of The Menu

    12.2 Areas of the menu The SC202 menu screen has the following areas:  DATE/TIME AREA: Shows the current time and date of the SC202. It also shows to exit the menu (see 12.1).  OPTIONS AREA: Shows the options available from the SC202 menu (see 15.1).

  • Page 36: Screens

    Screens 13. Screens The SC202 measures all functions simultaneously (these are detailed in Chapter 23). These functions are grouped into different screens for easy viewing. This chapter explains all the information about these screens. 13.1 Change screen When you turn on the sound level meter, the numeric sound level meter screen is displayed.

  • Page 37: Actions In The Display

    On the Sound Level Meter Screens the global levels of sound pressure are measured, both instantaneous and averaged values based on integration (equivalent level). The SC202 shows the functions with all the frequency weighting (A, C and Z) and the statistical data as maximum and minimum values and percentiles.
  • Page 38 The parameters that can be displayed are: TIME BASE FUNCTIONS      1maxt 1mint maxt 2mint AF5t ATmaxt ATmint, 1maxt    1mint 2maxt 2mint, CTmaxt CTmint ZTmaxt ZTmint Measurement time AFmaxt AFmint ASmaxt ASmint AImaxt AImint CFmaxt CFmint...
  • Page 39 The SC202 allows you to modify the function to be displayed regardless of the status ( , , / or ). SOUND LEVEL METER GRAPHIC SCREEN: It shows the time history and the value of the functions F1, F2 and F3. It graphically represents the last 60 measured values.
  • Page 40 Below the graph, the F1 value and the configured threshold level are shown numerically. The 1/1 Analyser Screens show in real time the equivalent continuous sound pressure level in octave bands centred on frequencies 8, 16, 31.5, 63, 125, 250, 500, 1000, 2000, 4000, 8000 and 16000 Hz (without frequency weighting).
  • Page 41 1/1 GRAPHIC ANALYSER SCREEN: It shows in real time the spectral graph of the equivalent levels by octave bands 8 Hz - 16 kHz (without frequency weighting) for the consecutive integration time T, for the measurement time t and for the integration time of 1 second. It also shows the numerical value of the global equivalent level with the frequency weighting A, C and Z and that corresponding to the octave band selected in the graph (vertical cursor) for T, t and 1s.
  • Page 42 The Analyser Screen (1/3) displays in real time, for the entire dynamic measurement range, the equivalent continuous sound pressure level in the 1/3 octave bands from 6.3 Hz to 20 kHz (without frequency weighting). Simultaneously, it shows the global equivalent level with frequency weighting A, C and Z.

  • Page 43: Supplementary Options

    14.1 Zoom The graphic representation of the wide dynamic range of measurement of the SC202 does not allow the correct appreciation of highly stable sound events in the time history and spectral content in graphic screens. A sound event with temporal variations of a few decibels will be represented as a practically constant event.

  • Page 44: Backerase

    14.2 Backerase During the measurement of a sound event, especially during background noise measurements, unexpected sounds may appear that do not correspond to the sound event to be evaluated and which the sound level meter can measure. In these situations, it may be interesting to use the BACKERASE option. This option, while the measurement is temporarily stopped , allows the deletion of the last 10 seconds of the measurement or recording.

  • Page 45: Settings And Adjustments

    Settings and adjustments 15. Settings and adjustments From the menu, all the features of the SC202 can be configured: date and time, ® sensitivity, Bluetooth communication, WIFI network, etc. To access the menu and move through it, see 12. 15.1 Menu options...

  • Page 46: Registers Option

    CLOUD Check the connection of the SC202 with the server (CESVACloud) and carry out updates and extensions. INFORMATION Show information corresponding to the SC202. Once in the selected option, you can make the changes you want. ACTIVATE/DEACTIVATE AN OPTION ...

  • Page 47: Memory Option

    15.1.2 MEMORY option This option displays the information about the memory of the device. Also, allows you to delete all the registers in the memory of the SC202. Once the MEMORY option is selected, a screen with the following information is displayed: ...

  • Page 48: Usb Option

    This option allows you to configure the SC202 as a mass storage device. After selecting the USB option, the following screen will be displayed: In order for the SC202 to behave as a mass storage device when connected to the PC, the option must be enabled.

  • Page 49: Wifi Option

    15.1.5 WIFI option This option allows WIFI wireless communication to be enabled and disabled. And enter the WIFI network to which the SC202 will connect to. Once the WIFI option is selected, the screen is displayed: Write the WIFI network in the SSID text box and the password in the Password text box.

  • Page 50: Times Option

    NOTE: To save battery, disable communication through the WIFI network when it is not needed. NOTE: To measure or record, you must have communication via the WIFI network disabled. 15.1.6 TIMES option   This option allows you to configure the T integration time and the 1 and sliding integration time.

  • Page 51: Date And Time Option

    SC202, with which the SC202 references the measurements and recordings. After selecting the DATE AND TIME option, the following screen is automatically displayed: The SC202 allows the date and time to be set manually or automatically. Chapter 15 Settings and adjustments...

  • Page 52: Microphone Settings Option

    15 minutes. AUTOMATICALLY Pressing , the SC202 displays the following screen with a drop-down menu of zones along with a list of cities that define the different time zones. The desired time zone must be selected.
  • Page 53 By selecting this option, the display will show the sound pressure level measured by the SC202 and the following parameters: the sound field correction and the sensitivity settings level currently configured. MICROPHONE MODEL Select the microphone model in the corresponding drop-down menu...

  • Page 54: Power Option

    To set a waiting time, type the desired minutes in the text box and then enable AUTO OFF. 15.1.12 CLOUD option This option allows it to be verified that the SC202 has successfully connected with the CESVACloud server. NOTE: For the device to be able to connect to the server (CESVACloud), the WIFI option must be enabled.

  • Page 55: Option Information

    If you wish to update the firmware and/or activate a module, see chapter 22. 15.1.13 Option INFORMATION This option displays the information pertaining to the SC202 itself. When selecting the INFORMATION option, the following information is displayed on screen: ...

  • Page 56: Registers And Memory Management

    The values of the measured functions can be stored in the memory of the SC202. By turning it off, saved data are not lost and can be retrieved, viewed and erased directly from the SC202 itself or copied from memory to a computer.

  • Page 57: Make A Recording

    The saved functions are detailed below: TIME BASE FUNCTIONS FINAL RESULT      1maxt 1mint 2maxt 2mint AF5t ATmaxt ATmint, 1maxt    1mint 2maxt 2mint, CTmaxt CTmint ZTmaxt ZTmint Measurement time AFmaxt AFmint ASmaxt ASmint AImaxt AImint CFmaxt...
  • Page 58 Evaluation of the NC (8 Hz – 16 kHz) and NR (8 Hz – 16 kHz) curves f: 8, 16, 31.5, 63, 125, 250, 500, 1000 (1k), 2000 (2k), 4000 (4k), 8000 (8k) and 16000 (16k) Hz. f: 6.3, 8.10, 12.5, 16, 20, 25, 31.5, 40, 50, 63, 80, 100, 125, 160, 200, 250, 315, 400, 500, 630, 800, 1000 (1k), 1250 (1.25k), 1600 (1.6k), 2000 (2k), 2500 (2.5k), 3150 (3.15k), 4000 (4k), 5000 (5k), 6300 (6.3k), 8000 (8k), 10000 (10k), 12500 (12.5k), 16000 (16k) and 20000 (20k) Hz.

  • Page 59: Structure Of A Register

    16.3 Structure of a register Each time a final result is saved or a recording is made, the SC202 stores a register in memory. For each register, a name is shown, which consists of: DATE and TIME LABEL_ REGISTER No.

  • Page 60: Use Of The Inputs And Outputs

    Use of the inputs and outputs 17. Use of the inputs and outputs The digital inputs and outputs and the AC output of the SC202 are detailed below.  AC output: Analogue output Communication inputs/outputs:  USB: Digital communication. Compliant with USB 2.0 Type C full-speed ...

  • Page 61: Digital Inputs And Outputs

    The USB connector [16] is of the USB type C. To connect with a computer, use the CN500 cable. With this input/output it is possible to:  Power the SC202 by connecting it to a PC, a power bank or a power supply.  Access data stored in memory.
  • Page 62 csv file for every 24 hours of recording for each time base (T, t, 1s, 20ms*). * To save the data with the 20ms time base see 15.1.7. Drive B* includes csv files that list the settings made (Clock, Firmware and Settings). * To view drive B, use a PC with Microsoft Windows (Windows10), Mac OS X, or Linux operating system.

  • Page 63: Bluetooth Communication

     To connect the SC202 sound level meter to the SC202 Link  To communicate the SC202 with a device (PC, Tablet, mobile, etc.) via a protocol. To obtain the protocol, contact your official retailer. ® NOTE: To save battery, disable Bluetooth communication when this communication is not needed.

  • Page 64: Accessories

    Accessories 18. Accessories The accessories supplied with the SC202 and the optional accessories that can be purchased additionally are listed below. 18.1 Accessories supplied The following accessories are supplied with the SC202: MODEL DESCRIPTION CN500 PC connection cable (USB type C - USB)
  • Page 65 TR002 Tripod adaptor PR003 Extendable pole of 3 m NOTE: only guarantees that the device will work properly when original accessories are used. Any damage caused to the device due to the use of non-original accessories is excluded from the guarantee. Chapter 18 Accessories...

  • Page 66: Technical Specifications

    IEC 61672-1:2013, Class 2, Group X and Z  IEC 61260-1:2014, Class 2 The class of the SC202 according to the IEC 61672-1 standard for the response to sound waves incident on the microphone in the reference direction in a free field depends on the microphone incorporated.

  • Page 67: Microphones And Preamplifiers

    The table below shows the technical features of the microphones and the accessories that attach to them. 19.2.1 Microphone models and their main features The SC202 as Class 2 can incorporate the following microphone models of the brand: P008. MICROPHONE...

  • Page 68: Frequency Response

    -0.02 0.14 1000 -0.09 0.14 2000 0.08 0.16 4000 0.54 0.21 8000 3.35 0.28 12500 6.02 0.35 16000 3.66 0.43 19.2.3 Frequency response RESPONSE TO PLANE PROGRESSIVE SOUND WAVES INCIDENT IN THE REFERENCE DIRECTION Correction for the average frequency microphone response for plane progressive sound waves incident in the reference direction: P008 FREQUENCY [Hz]...
  • Page 69 1600 1584.89 -0.40 0.00 1678. 80 -0.43 0.00 1778.28 -0.47 0.00 1883.65 -0.50 0.00 2000 1995.26 -0.52 0.00 2113.49 -0.56 0.00 -0.57 0.00 2238.72 2371.37 -0.59 0.00 -0.62 0.00 2500 2511.89 2660.73 -0.68 0.00 -0.69 0.00 2818.38 2985.38 -0.74 0.00 3150 3162.28 -0.82...
  • Page 70 0.90 0.02 14962.4 0.18 0.02 16000 15848,9 -1.45 0.05 Free-field response of the SC202 to sinusoidal plane waves relative to the corresponding free-field response in the reference direction SC202 FREQUENCY [Hz] Correction Uncertainty Exact in base 10 [dB] [dB] 251,189 0.00...
  • Page 71 3349.65 -0.47 0.00 3548.13 -0.50 0.00 3758.37 -0.74 0.00 4000 3981.07 -0.65 0.00 4216.97 -0.77 0.00 4466.84 -0.77 0.00 4731.51 -0.85 0.00 5000 5011.87 -1.17 0.00 5308.84 -1.26 0.04 5623.41 -1.72 0.04 5956.62 -1.59 0.04 6300 6309.57 -1.66 0.04 6683.44 -1.87 0.04 7079.46...
  • Page 72 Correction for the average effects of the reflections of the sound level meter case and the diffraction around the microphone for plane progressive sound waves incident in the reference direction: SC202 FREQUENCY [Hz] Correction Uncertainty Exact in base 10 [dB]...
  • Page 73 3150 3162.28 0.10 0.00 3349.65 0.27 0.00 3548.13 0.30 0.00 3758.37 0.13 0.00 4000 3981.07 0.33 0.00 0.29 0.00 4216.97 4466.84 0.39 0.00 4731.51 0.44 0.00 5000 5011.87 0.29 0.00 5308.84 0.32 0.03 5623.41 0.11 0.03 5956.62 0.38 0.03 6300 6309.57 0.42 0.03...
  • Page 74 Correction for the average effects of the PV009 windscreen on the frequency response of the sound level meter in the absence of wind: PV009 FREQUENCY [Hz] Correction Uncertainty Exact in base 10 [dB] [dB] 1000 1000 0.27 0.00 1250 1258,93 0.40 0.00 1600...
  • Page 75 RESPONSE WITH RANDOM INCIDENCE IN A DIFFUSE FIELD: Correction for the average frequency response of the SC202 sound level meter, with the sound field correction set for diffuse field, for the response with random incidence in a diffuse field: SC202...

  • Page 76: Effect Of The Optional Accessories On The Microphone

    Correction for the average frequency response of the SC202 sound level meter with PV009 windscreen, with the sound field correction set for diffuse field, for the response with random incidence in a diffuse field: SC202 +PV009 FREQUENCY [Hz] Correction Exact in base 10...

  • Page 77: Directional Response

    Sound level meter directional response to plane progressive waves with 30°, 90° and 150º angles of incidence, including the reference direction. Maximum variation of sensitivity at 30°, 90° and 150° with respect to the reference direction extended with the expanded measurement uncertainty SC202 Vertical and Horizontal Plane FREQUENCY Variation at 30º [dB] Variation at 90º [dB] Variation at 150º...
  • Page 78 SOUND LEVEL METER: HORIZONTAL PLANE DIRECTIVITY DIAGRAMS: SOUND LEVEL METER: VERTICAL PLANE DIRECTIVITY DIAGRAMS: Chapter 19 Technical specifications...
  • Page 79 150° angle of incidence including the reference direction: Maximum variation of sensitivity at 30°, 90° and 150° with respect to the reference direction extended with the expanded measurement uncertainty SC202 + PV009 Vertical and Horizontal Plane FREQUENCY Variation at 30º [dB] Variation at 90º...
  • Page 80 SOUND LEVEL METER + WINDSCREEN: HORIZONTAL PLANE DIRECTIVITY DIAGRAMS: SOUND LEVEL METER + WINDSCREEN: VERTICAL PLANE DIRECTIVITY DIAGRAMS: Chapter 19 Technical specifications...

  • Page 81: Directivity Indexes

    19.2.6 Directivity indexes The directivity indexes to determine the relative frequency weighted response for random incidence of the SC202 sound level meter are shown below. FREQUENCY [Hz] SC202 Exact in base 10 Correction [dB] 251.19 0.11 316,23 0.05 398.11 0.00 501.19...
  • Page 82 -5.15 20000 19,952.60 -5.56 The directivity indexes to determine the relative frequency weighted response for random incidence of the SC202 sound level meter and PV009 windscreen are shown below. FREQUENCY [Hz] SC202 + PV009 Exact in base 10 Correction [dB] 251.19...
  • Page 83 2371.37 -0.34 2500 2511.89 -0.35 2660.73 -0.36 2818.38 -0.38 2985.38 -0.43 3150 3162.28 -0.49 3349.65 -0.56 3548.13 -0.62 3758.37 -0.69 4000 3981.07 -0.82 4216.97 -0.96 4466.84 -1.12 4731.51 -1.24 5000 5011.87 -1.33 5308.84 -1.39 5623.41 -1.53 5956.62 -1.71 6300 6309.57 -1.87 6683.44 -1.97...

  • Page 84: Measurement

    19.3 MEASUREMENT 19.3.1 Warm-up time The warm-up time is 5 seconds. 19.3.2 Measurement range Measurement range at 1 kHz for the SC202 sound level meter with the P008 microphone (h): FUNCTIONS: L and L (including L AeqT Microphone and preamplifier...

  • Page 85: Noise

    Cpeak Tables of nominal C-weighted peak levels at the upper and lower limits of the linear operating ranges in each level range (f). Typical linearity range for SC202 sound level meter with P008 microphone: Frequency [Hz] Weighting C [dB] 31.5 from 55.0 to 137.0...

  • Page 86: Time And Clock Performance

    19.3.5 Time and clock performance TIME The screen refresh time is 1s. When a measurement starts, the value of the functions that depend on the integration time (T) will appear when the time (T) is finished. This value is updated every second, although no changes will be appreciated until the time T has elapsed.
  • Page 87 The following table shows the A, C and Z frequency weightings and tolerance for Class 2. FREQUENCY A WEIGHTING C WEIGHTING Z WEIGHTING TOLERANCE [Hz] [dB] [dB] [dB] CLASS 2 [dB] - 70.4 - 14.3 + 5,0; -  12.5 - 63.4 - 11.2 + 5;...

  • Page 88: Calibration

    CB004 or CB012 acoustic calibrator and consult section 10.1. 19.5 OCTAVE AND THIRD OCTAVE BAND FILTERS The SC202 has Class 2 octave band and third octave band filters according to the IEC 61260-1:2014 standard. 19.5.1 Octave and third octave band filters...
  • Page 89 100,00 125.89 125.89 158,49 199.53 251.19 251.19 316,23 398.11 501.19 501.19 630,96 794.33 1000 1000 1000 1000,0 1250 1258,9 1600 1584,9 2000 1995.30 2000 1995.3 2500 2511,9 3150 3162,3 4000 3981.10 4000 3981,1 5000 5011,9 6300 6309,6 8000 7943.30 8000 7943,3 10000 10000...

  • Page 90: Measurement Range (Third Octave Band Spectrum Analyser)

    8000 from 22.9 to 137 16000 from 26.1 to 137 19.5.3 Measurement range (third octave band spectrum analyser) Measurement range (with linearity error lower than 0.4 dB): MICROPHONE P008 FREQUENCY [Hz] Range [dB] from 30.2 to 137 from 29.4 to 137 from 28.6 to 137 12.5 from 27.8 to 137...

  • Page 91: Environmental, Electrostatic And Radio Frequency Criteria

    6300 from 19.0 to 137 8000 from 18.1 to 137 10000 from 17.2 to 137 12500 from 16.8 to 137 16000 from 24.4 to 137 20000 from 20.9 to 137 19.6 ENVIRONMENTAL, ELECTROSTATIC AND RADIO FREQUENCY CRITERIA 19.6.1 Stabilisation time The stabilisation time after changes in environmental conditions (l) is 5 minutes.

  • Page 92: Electrostatic Criteria

    SC202 sound level meter with function L REFERENCE ORIENTATION: SC202 in vertical position, with the principal axis of the SC202 perpendicular to the direction of propagation of the field in horizontal polarisation. With all the cables connected and with the...

  • Page 93: Inputs And Outputs

    (*) Sound level meter with L function. SC202 in vertical OPERATION AND POSITION THAT PRODUCES position, with the principal axis of the SC202 perpendicular to the MAXIMUM SUSCEPTIBILITY (MINIMUM direction of propagation of the field with horizontal polarisation. IMMUNITY) TO RADIATED OR CONDUCTED...

  • Page 94: Usb Communication

    0.1 dB 19.9 POWER 19.9.1 Batteries The SC202 can be powered by three types of batteries, so the type of battery to be used must be indicated (see 15.1.10). TYPES OF BATTERIES: 3 x 1.5 V alkaline batteries, AA (LR6) size 3 x 1.5 V lithium batteries, AA (LR6) size...

  • Page 95: External Power

    5 V DC  5% MINIMUM CURRENT: To power the SC202 from a mains supply, the use of the AM300 mains transformer and the CN500 cable is recommended. declines all responsibility for the use of power supplies other than those recommended.

  • Page 96: Standards

    Similarly, the product includes the following symbol, which indicates that it is subject to selective waste collection: 19.11.2 Certificates Type approval Certificate for Spain 19.11.3 Notes If your SC202 stops complying with any of these specifications, contact your nearest official dealer for inspection, adjustments or repair. Chapter 19 Technical specifications...

  • Page 97: Maintenance And Precautions

    Different types of batteries cannot be used together. All three batteries must be of the same type.  Remove the batteries if you will not be using the SC202 for a long period.  When the SC202 is powered through the USB C port, a power supply certified...
  • Page 98  WARNING: The symbol is located on the battery cover. This symbol indicates that for ambient temperatures between 40 and 50 ºC, only batteries certified by the IEC 60086-4 standard can be used, protected against short circuits and that withstand an ambient temperature of 60 ºC; the Energizer L91 Li/FeS2 model is recommended;...

  • Page 99: Tips For Taking Measurements

     Any impact on the SC202 will be picked up by the microphone and may affect the measurement value and permanently damage it. ...

  • Page 100: Firmware Update And Module Activation

    Without the need to send the device to the technical service. This saves a great deal of time and money. Optional modules can be purchased at the time of purchase of the SC202 or at a later date. To incorporate them, simply contact your official...

  • Page 101: Activation Of An Optional Module Of The Sc202

    At this moment, the sound level meter can be turned on. 22.2 Activation of an optional module of the SC202 Optional modules can be purchased at the time of purchase of the SC202 or at a later date. To incorporate them, simply contact your official...

  • Page 102: Activating An Optional Sc202 Link Module

    22.3 Activating an optional SC202 Link module To incorporate an optional module to the SC202 Link application, simply contact your official retailer and provide them with the serial number of your sound level meter and manage the module acquisition procedures.

  • Page 103: Functions

    Functions 23. Functions 23.1 Nomenclature of functions The functions that the SC202 measures, their nomenclature and a brief definition of these are specified below. 23.1.1 Sound level meter parameters FUNCTION DESCRIPTION Sound pressure level with A frequency weighting and fast time weighting (Fast)
  • Page 104 Peak sound pressure level of T and t time with C frequency weighting Cpeak Peak sound pressure level of 1 s with C frequency weighting Cpeak1s Total percentiles Partial percentiles of T integration time n: 1%, 5%, 10%, 50%, 90%, 95%, 99%. The percentiles are calculated from a sampling time of 20 ms and with classes of 0.1 dB Equivalent continuous sound pressure level with t integration time with X frequency weighting...

  • Page 105: 1/1 Octave Band Parameters

    : These functions are measured by the SC202 but are not displayed on the screen. The way to obtain the results of these functions is by making a recording and later viewing the csv file from the PC (see 17.2.1).

  • Page 106: 1/3 Third Octave Band Parameters

    23.1.3 1/3 third octave band parameters FUNCTION DESCRIPTION Equivalent continuous sound pressure level with t integration time of the third octave band centred on frequency f Equivalent continuous sound pressure level with T integration time of the third octave band centred on the frequency f Equivalent continuous sound pressure level with 1 second integration time of the third octave band centred on the frequency f f: 6.3, 10, 12.5, 16, 20, 25, 31.5, 40, 50, 63, 80, 100, 125, 160, 200, 250, 315, 400, 500,...

  • Page 107: Description Of Functions

    23.2 Description of functions This section briefly describes the functions that the SC202 measures for the various measurement modes. 23.2.1 Sound pressure level with Fast and Slow time weighting (Fast) RMS value with 125 ms fast exponential averaging, in decibels.

  • Page 108: Sound Pressure Level With Impulse Time Weighting

    23.2.2 Sound pressure level with Impulse time weighting (Impulse) Maximum short-term RMS value with exponential averaging of 35 ms, in decibels. EXPONENTIAL PEAK p(t) AVERAGING DETECTOR ...  = 35 ms  = 1.5 s = 20Pa p(t): instantaneous sound pressure The Impulse feature is designed to detect impulse noise, like shots or blows.

  • Page 109: Taktmaximal-Mittelungspegel

    T integration time (a programmable parameter). Every time T interval is presented. That is, every T interval, the SC202 shows the equivalent level of the last T interval.  The equivalent level L is the equivalent level corresponding to the sliding integration time each second.

  • Page 110: Percentiles

    23.2.6 Percentiles and L These are the levels that have been exceeded for 99%, 95%, 90%, 50%, 10%, 5% and 1% of the measurement time, in decibels. On the sound level meter screen, they are calculated with 0.1 dB classes from a sampling time of 20 ms.

  • Page 111: Reference To Standards

    Description of the frequency weightings 19.3.6 Frequency weighting provided 5.1.12 Description of the level range with the nominal 19.3.2 Measurement range value A-weighted at 1 kHz The SC202 has one unique range Recommendation for selecting the optimal range Chapter 24 Reference to standards...
  • Page 112 19.2.1 Microphone models and their main features microphone and input peak-to-peak voltage value 5.1.18 Description of each independent input channel The SC202 has only one input channel 5.1.19 Initial time interval after power on 19.3.1 Warm-up time Adjustments to the calibration check frequency 5.2.1...
  • Page 113 Operation and interpretation of “under range” The “under range” indication is not necessary as the indications. SC202 has only one range, the lower limit of which is determined by the inherent noise of the microphone and electronic components within the sound level meter.
  • Page 114 5.15.6 Alternative results presentation devices The SC202 does not have any alternative results presentation devices. 5.19 Analogue or digital output 5.19.1 Features of the analogue or digital outputs 4 Inputs and outputs 17 Use of the inputs and outputs 19.7 INPUTS AND OUTPUTS 5.20...
  • Page 115 Electrostatic discharges 6.5.2 Degradation due to exposure to electrostatic 19.6.3 Electrostatic criteria discharge. Fields at the frequency of the alternating power network and radio frequency 6.6.1 Configuration that produces the maximum 19.6.4 Criteria of the fields at the frequency of the susceptibility (minimum immunity) to the fields mains supply and radio frequency fields.
  • Page 116 The SC202 has only one range. weighted sound levels at 1kHz. 19.3.2 Measurement range 9.2.2 f) Operation of the level range controls There is no level range control. The SC202 has only one range. 9.2.2 g) A description of the results presentation devices 6 Screen and the frequencies for updating the results.
  • Page 117 9.2.3 Electrical power 9.2.3 a) Acceptable battery types and their nominal lives 19.9.1 Batteries 9.2.3 b) The method of confirming that the power is 7 Power sufficient for the sound level meter to function within the specifications of this standard. 9.2.3 c) Means of making the sound level meter work on 19.9.2 External power...
  • Page 118 11.5 "Under range" indicator them. 9.2.6 k) Operation of any user-selectable threshold for The SC202 does not provide thresholds measurements of time-averaged sound levels or sound exposure levels. 9.2.6 l) The method of downloading digital data to a PC 17 Use of the inputs and outputs 9.2.6 m)
  • Page 119 9.3 c) Microphone reference point 19.1 REFERENCE CONDITIONS 9.3 d) Correction data for levels equivalent to free-field response or random incidence, where applicable, associated with sound levels in response to sound pressure produced by a multi-frequency calibrator, a comparison coupler, or an electrostatic actuator. 9.3 e) Directivity index to indicate the relative response for random incidence.

  • Page 120: Standard Une-En 61260-1:2014

    24.2 Standard UNE-EN 61260-1:2014 PARAGRAP DESCRIPTION SECTION Manual SC202 H IEC 61260 PERFORMANCE REQUIREMENTS 5.1.4 The configuration of the filter for one of the 13 Screen normal modes of operation, including required accessories. Reference attenuation 5.9.1 Reference attenuation 19.5.1 Octave and third octave band filters 5.9.2...
  • Page 121 FILTERS performance requirements of this standard 7.1 b) For each analysis channel, a list of nominal The SC202 has only one channel mid-band frequencies for all filters for all filters of each available filter bandwidth 7.1 c) Reference attenuation 19.5.1 Octave and third octave band filters...
  • Page 122 7.2 i) The identification of the specific instrument 3.3 Device parts 7.2 k) The maximum time needed after switching on 19.6.1 Stabilisation time the instrument before the instrument may be used to measure filtered output signal levels Testing 7.3 a) Reference level range 19.2 MICROPHONES AND PREAMPLIFIERS 7.3 b)
  • Page 124 Maracaibo, 6  08030 Barcelona (Spain) Tel. (+34) 934 335 240  www.cesva.com info@cesva.com...

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