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DeltaOHM HD2010UC/A Operating Manual

Integrating sound level meter spectrum analyzer
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Operating manual

Integrating Sound Level Meter
Spectrum Analyzer
HD2010UC/A
www.deltaohm.com
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Summary of Contents for DeltaOHM HD2010UC/A

  • Page 1: Operating Manual

         English Operating manual Integrating Sound Level Meter Spectrum Analyzer HD2010UC/A Companies / Brands of GHM www.deltaohm.com Keep for future reference.
  • Page 2 HD2010UC/A V4.1...
  • Page 3 25. Keypad RIGHT key: in graphic mode, it moves the selected cursor towards higher values. 26. Battery symbol: indicates the battery level. The more the symbol is empty, the more the battery has run down. 27. LINE: un-weighted output connector ( 3.5mm jack). ∅ HD2010UC/A V4.1...

  • Page 4: Connector Function

    Jack (∅ 2.5mm) or the analogue (DC) A weighted output with FAST constant time up- dated 8 times/s. n.27 - Jack (∅ 3.5 mm) for the analogue (LINE) un-weighted output placed on the right side of the conical part/detail. HD2010UC/A V4.1...

  • Page 5: Introduction

    The HD2010UC/A can be integrated with other options to extend its application scope at any time; the firmware can be updated directly by the user by means of the supplied Noise Studio program.
  • Page 6 Moreover the spectrum can be shown both as linear and as A or C frequency weighted, for a fast evaluation of the different spectral components audibility. As a statistical analyser, the HD2010UC/A samples the sound signal 8 times per second with A-frequency weighting and FAST time constant, and analyses it statistically according to 0.5 dB classes.
  • Page 7 UNI EN ISO 3382. The HD2010UC/A sound level meter analyses the noise level decays with the Ordinary Least Squares method, simultaneously both by octave from 125Hz to 4KHz and, if option HD2010.O1 is installed, by third octave bands from 100Hz to 12.5KHz ac-...

  • Page 8: Hd2010Uc/A Block Diagram

    HD2010UC/A B LOCK IAGRAM The block diagram shows the main elements of the HD2010UC/A sound level meter. HD2010UC/A V4.1...

  • Page 9: The Microphone

    The UC52 condenser microphone is pre-polarized (electret) and has a ½” standard diameter. The frequency response in free field is flat from 20Hz to 16kHz in type 1 HD2010UC/A version (UC52/1). Microphones used for type 2 precision sound level meter versions have a flat frequency response from 25Hz to 10KHz.

  • Page 10: The Preamplifier

    The output driver allows transmitting the microphone signal via a cable to a distance up to 10m. The preamplifier of HD2010UC/A together with UC52 microphone can measure signals up to 140 dB with a frequency response (excluding microphone) up to 40kHz The following models are available: •...

  • Page 11: The Instrument

    The microprocessor controls all the instrument processes: management of the electrical cali- brator, Flash memory, display, keyboard and multi-standard serial interface (RS232 and USB). The microprocessor also supplies the electrical signal corresponding to the A weighted instant level with FAST time constant, sent to DC output. - 11 HD2010UC/A V4.1...

  • Page 12: Description Of Display Modes

    2 spectra/s. As a statistical analyser, it calculates the prob- ability and the cumulative distribution. To be able to display all these data, the HD2010UC/A, pro- vides 6 different display modes as shown in the figures below.
  • Page 13 (automatic exit after 10s). In graphic display mode, use the UP, DOWN, LEFT and RIGHT keys to change the vertical scale parameters. The LEFT and RIGHT keys reduce and expand the vertical scale, while the UP - 13 HD2010UC/A V4.1...
  • Page 14 DOWN keys decrease and increase the levels of the vertical scale; the graph is so shifted up- wards or downwards, respectively. - 14 HD2010UC/A V4.1...

  • Page 15: Slm ( Sound Level Meter Mode )

    MULT (Menu >> Instrument >> Measurements >> Integr.: MULT), the “Tint” symbol flashes. The battery symbol is in the right corner, indicating battery level. Integration interval Acquisition time 01:08:25 Tint= s Maximum level Minimum level 56.9 Bar showing 60.8 istantaneous level 79.3 Displayed parameters - 15 HD2010UC/A V4.1...

  • Page 16: Selecting Parameters

    To stop a measurement in progress when recording, press the PAUSE/CONTINUE key. All data logged until the moment key was pressed are used for calculation of integrated parameters. However, there are some cases when it is useful to clear the measurements recorded just before - 16 HD2010UC/A V4.1...
  • Page 17 The erase maximum time, divided into 5 steps, is set from menu: MENU >> Instrument >> Measurement >> Max Back-Erase. Settable values are: 5, 10, 30 or 60 seconds, with 1s, 2s, 6s or 12s steps, respectively. - 17 HD2010UC/A V4.1...

  • Page 18: Time Profile Mode

    ). The integration time is equal to 1/8s and the last 100 measured samples are displayed. The HD2010UC/A sound level meter calculates the sound level 128 times per second (with a time period of 7.8ms) and displays the maximum level at intervals equal to 125ms.

  • Page 19: Using The Cursors

    The parameter level being lower than the minimum measurable level is indicated by a series of dashes (- - - - ). Cursors will be disabled pressing the CURSOR key again. - 19 HD2010UC/A V4.1...

  • Page 20: Spectrum Mode (Spectrum By Octave Or Third Octave Bands )

    1s to 1h. Spectral analysis, normally frequency unweighted (Z), can be carried out applying A or C fre- quency networks. The A or C frequency weighted analysis is used to evaluate audibility of different spectral components. - 20 HD2010UC/A V4.1...

  • Page 21: Display Description

    The instrument full scale is determined by the selection of the input gain by choosing from the menu: MENU >> In- strument >> Input gain. - 21 HD2010UC/A V4.1...
  • Page 22 In the octave and third octave spectrum mode, cursors can be also positioned on the bar represent- ing the wideband channel. Filters having a level lower than the minimum measurable are indicated by the cursor with a series of dashes (- - - -). - 22 HD2010UC/A V4.1...

  • Page 23: Statistical Graphs

    When the continuous recording is acti- vated with the single integration mode, the integration time acts like a timer for data acquisition, stopping automatically the measurement when the time is elapsed. When the level integration is - 23 HD2010UC/A V4.1...
  • Page 24 Statistical analysis is shown with two different graphical screens: the probability distribution and percentile levels graph. - 24 HD2010UC/A V4.1...

  • Page 25: Level Distribution Of Probabilities

    The second line at the top of the display shows the level and central frequency of the class and the relevant probability indicated by the active cursor, or the probability for the levels in the interval be- tween the two cursors when they are both active. Press CURSOR again to disable the cursors. - 25 HD2010UC/A V4.1...

  • Page 26: Percentile Levels Graph

    The CURSOR, LEFT and RIGHT keys on the keypad enable and move the cursor. The second line at the top of the display shows the percentile level indicated by the cursor. Press CURSOR again to disable the cursor. - 26 HD2010UC/A V4.1...

  • Page 27: Event Trigger Function

    >> Source: MAN). In this case the minimum duration parameter has no effect and the event begins as soon as the trigger is detected. For each identified event, the HD2010UC/A calculates the following: • 5 programmable selectable parameters: maximum and minimum levels, peak level, equiva-...
  • Page 28 If the trigger is enabled, the sound level profile is displayed with black background when the trigger is not active so as to highlight the event’s portion. Fig. 11 - Description of the “Event trigger” display - 28 HD2010UC/A V4.1...

  • Page 29: Description Of The Different Acquisition Modes

    DESCRIPTION OF THE DIFFERENT ACQUISITION MODES The HD2010 makes measurements according to two different acquisition modes either single (standard for HD2010UC/A) or multiple. The single integration begins by resetting the integrated levels (e.g. the Leq) and ends when the set integration time Tint is elapsed or when the acquisition is manually interrupted by the RUN/STOP key.

  • Page 30: Single Integration

    Naviga- tor, and selecting the Report mode for the replay. The interval acquisition can be enabled only in single integration mode. - 30 HD2010UC/A V4.1...

  • Page 31: Multiple Integration

    The multiple integration excludes the possibility of using the Report Time parameter to record using intervals and the event trigger. The statistical analysis and the other integrated levels are cleared at the beginning of every integration period. - 31 HD2010UC/A V4.1...
  • Page 32 The following table gives the different measurement and storage modes of the HD2010UC/A. Integration Auto-Store Measurements Continuous Recording Single Recording Press to start. The integration ends when Press to start. Press to record the t=T.Int., enters in HOLD Automatic stop when mode, and it is possible to displayed data.

  • Page 33: Print And Monitor Functions

    “P” symbol indicating the suspension status of the integrated parameter calculation. The Monitor function does not interfere with data recording on memory and can be activated simultaneously. A series of values is sent every 0.5s. - 33 HD2010UC/A V4.1...

  • Page 34: The Record Function

    The logging will be automatically stopped. When parameter “MENU >> Instrument >> Measurement >> Int.mode” is set in MULT mode (the “Tint” symbol blinks in the SLM screen), the acquisition is repeated on time intervals - 34 HD2010UC/A V4.1...

  • Page 35: Continuous Recording

    (see the chapter “DESCRIPTION OF THE DIFFERENT ACQUISITION MODES” at page 29). The spectra are cleared in addition to the statistical levels and the integrated parameters displayed on the SLM screen. - 35 HD2010UC/A V4.1...

  • Page 36: Continuous Recording Of Reports And Events Groups

    Fig. 12 shows the recording flow for the Report and Event groups. The Measurement group recording interval is equal to 2 recordings per second. In the following example, also the Report group items are memorized with a Report time amounting to 10s. - 36 HD2010UC/A V4.1...
  • Page 37 Fig. 13 - Recording flow for the Measurement, Report and Event groups When the trigger threshold is exceeded for a shorter period than the minimum duration time, the re- cord containing the Event group information is not logged. - 37 HD2010UC/A V4.1...
  • Page 38 “TIMER” message blinks, showing the automatic acquisition feature has been activated. Fig. 15 - Waiting for the timer to start The acquisition will end when the set integration time (Tint) has elapsed and the instrument will automatically turn off after disabling the timer. - 38 HD2010UC/A V4.1...

  • Page 39: Description Of The Menu Functions

    Press SELECT to access the selected submenu or to modify the selected parameter. Use the UP and DOWN arrows to edit the flashing selected parameter: press ENTER to confirm the new value, press MENU to cancel the input changes. - 39 HD2010UC/A V4.1...

  • Page 40: Instrument

    The value can be set between 3 (minimum) and 9 (maximum). - 40 HD2010UC/A V4.1...

  • Page 41: Input Output

    Take care of this note when using data transfer programs requiring a manual configuration of the serial port parameters, such as, i.e. Hyper- Terminal. The Noise Studio program, combined with the HD2010UC/A, automatically sets the serial port, so that no action by the operator is required.

  • Page 42: Sound Level Meter

    These items can be changed directly in their screens. • Aux Pond.: the frequency weighting of the wideband channel combined with the spectrum and displayed with a vertical bar on the right of the spectrum. A, C and Z weightings are available. - 42 HD2010UC/A V4.1...

  • Page 43: Statistical Analyzer

    It collects the settings concerning the recording of the sound levels measured in each screen, the report, and event parameters. If no parameter is enabled for recording (all OFF), the instrument warns of the impossibility to record. The recording parameters are divided in three sub-menus: Measurement, Report, and Event. - 43 HD2010UC/A V4.1...

  • Page 44: Measurements

    Allowed values vary from 90.0dB to 130.0dB with a 0.1dB resolution. • Microphone Response: allows selecting the type of frequency response of the microphone according to the sound field. The standard setting for the microphone (UC52) is “Free Field” - 44 HD2010UC/A V4.1...

  • Page 45: Sequencer

    The correction for the windscreen is not available for HD2010UC/A type 2. For additional details on the correction to be applied, please see the UC52 microphone specific manual.

  • Page 46: Programs

    SELECT If you press CLEAR, the content of the instrument memory will be cleared. The user will be asked a confirmation before clearing. Press SEARCH to access the first session of stored data (data on memory). - 46 HD2010UC/A V4.1...
  • Page 47 Press START to see the data session: if no reports and/or events were recorded, the measurement session screens will be displayed, as for the “Auto” files. If, in addition to measurements, reports and/or events were also recorded, an intermediate page is displayed allowing the display of meas- - 47 HD2010UC/A V4.1...
  • Page 48 LOAD to reload the current session, NEXT to display the properties of the next session or EXIT to quit. At the end of the list of stored files, “End of Dump” will be displayed. Press REWIND to go back to the first file of the list. - 48 HD2010UC/A V4.1...

  • Page 49: Calibration

    The HD2010UC/A sound level meter stores all calibration typical parameters with respective date and time in a reserved area. Calibration types can be: • Acoustic calibration by means of a 1kHz sound level generator, like HD2020 •...
  • Page 50 ANSI standards (see the parameter of the menu: CALIBRATION >> Microphone Response). The HD2010UC/A sound level meter is suitable for measurements on site in a temperature range between –10°C to +50°C, in a static pressure range between 65kPa and 108kPa and in a relative humidity range between 25% and 90%.

  • Page 51: Periodic Calibration

    ERIODIC CALIBRATION The periodic calibration of the HD2010UC/A sound level meter is needed to ensure the traceability to the laboratory standards and is carried out in accredited laboratories. The HD2010UC/A sound level meter is calibrated at Delta Ohm Acoustic Laboratory before being supplied to the user.

  • Page 52: Electric Calibration

    PROG key, and is not relate to the calibration in progress. ELECTRIC CALIBRATION Last:2003/01/01 10.00 Calibr. level 94.0dB 51.3 Run calibration ? 4. Press YES to continue and NO to quit. - 52 HD2010UC/A V4.1...
  • Page 53 In this case, refer to “Troubleshooting” (page 112), and if necessary contact our service department. - 53 HD2010UC/A V4.1...

  • Page 54: Acoustic Calibration

    For this purpose type 1 and type 2 (according to IEC 60942) acoustic calibrators compatible with UC52 microphone capsule are used. For the HD2010UC/A sound level meter are available Class 1 HD2020 and Class 2 HD2022 calibrators.
  • Page 55 (take out the preamplifier from the calibrator". ACOUSTIC CALIBRATION ACOUSTIC CALIBRATION Last:2003/01/01 10.00 Last:2003/01/01 10.00 Calibr.level 94.0dB Calibr.level 94.0dB -0.1 96.1 Δ Take off the Checking microphone calibrator polarization EXIT 8. Take out the preamplifier from the calibrator and press EXIT. - 55 HD2010UC/A V4.1...
  • Page 56 If calibration constants were incompatible with a correct working of the instrument, calibration would fail and the message “Calibration failed! Consult the manual” would appear. In this case, re- fer to “Troubleshooting” (page 112) and if necessary contact our service department. - 56 HD2010UC/A V4.1...

  • Page 57: Microphone Replacement

    At the end of the procedure, should it fail, a table will be shown with the results of the inspection. If necessary, refer to “Troubleshooting” page 112), and if neces- sary contact our service department. - 57 HD2010UC/A V4.1...

  • Page 58: Reverberation Time Measurement

    REVERBERATION TIME MEASUREMENT The “Reverberation Time” program is available as an option on the HD2010UC/A sound level meter. The measurement of reverberation time requires the use of a sound source, an omnidi- rectional microphone and a measuring device that can measure the sound decay in the environment being tested.
  • Page 59 For the linear integration sequence, the time of each integral must be lower than T/12. There are no advantages in reducing the linear integration time below this value. The HD2010UC/A car- ries out a linear integration of sound level on time intervals corresponding to 1/32s; according to ISO 3382, it can therefore perform reverberation time calculations starting from a reverberation time of 0.375s.

  • Page 60: Measurement Using A Stationary Noise

    In some cases it is possible to measure two different slopes, one for the initial stretch of the decay curve and one for the final stretch. According to ISO 3382 the signal/noise ratio must respectively be at least 45 dB and 35 dB for the and T measurements. - 60 HD2010UC/A V4.1...

  • Page 61: Measurement Using An Impulsive Noise

    Delta Ohm’s sound level meter HD2010UC/A can automatically perform the backward in- tegration of Schroeder by applying advanced numeric techniques to remove the undesirable effects of the background noise.

  • Page 62: Operating Procedure For Reverberation Time Measurement

    If the option to measure the reverberation time is not present, a warning message will appear: "Program not enabled. Please contact the manufacturer". In this case you need to contact your vendor to purchase this feature. - 62 HD2010UC/A V4.1...
  • Page 63 The sound level meter and the noise source must be set up (impulsive or continuous according to the type of measurement selected) and, when ready, continue by pressing the PROG key. - 63 HD2010UC/A V4.1...
  • Page 64 (NOISE) or impulsive source (IMPULSE). According to your choice, the measurement session will proceed in two different ways: first, the sound source interruption tech- nique will be illustrated, and then the integrated impulse response. REVERBERATION TIME Batt:100% Mem: 95% Step 04 Select sound source: - 64 HD2010UC/A V4.1...
  • Page 65 Wait until, according to the environment dimensions, the sound of the source stabilizes. Usually 4-5 seconds are enough even for wider environments, then proceed pressing the NEXT key. REVERBERATION TIME Batt:100% Mem: 95% Step 0 Turn off the source within 5 seconds. - 65 HD2010UC/A V4.1...
  • Page 66 The sound level meter gives a complete description of the measurement both in the form of a table and graphically. See the paragraph describing the results: "Reverberation Time - Analysis of the Results". - 66 HD2010UC/A V4.1...
  • Page 67 Results". Press the PROG key to access the next step where you can save (SAVE key), review the val- ues again (VIEW key) or close the current measurement session to start a new one (EXIT key). - 67 HD2010UC/A V4.1...
  • Page 68 Besides, one or more results may be missing if the signal/noise ratio between the generated signal and the background noise is not sufficient to perform the respective reverberation time estimations, as shown in the following page. - 68 HD2010UC/A V4.1...
  • Page 69 Pressing the right arrow it’s possible to select the central frequency of the filter allowing to modify their value. Pressing the left arrow returns to the selection of the parameter to be displayed. - 69 HD2010UC/A V4.1...
  • Page 70 MODE button: as indicated below, by pressing this key the display will move to the time profile view, to the octave spectrum, to the third of octave (optional on HD2010UC/A ) one and then return to the results.
  • Page 71 By pressing the MODE key once, the display shows the estimation of reverberation time by octaves soon after the results view. Pressing the MODE button again you can see the estimation by the third of octave bands (optional on HD2010UC/A). The spectrum by octave bands shows the reverberation times T...
  • Page 72 T ) of the reverberation time for the octave and third of octave bands optional on HD2010UC/A ) just press the MODE key repeatedly. Direct printing of results, pressing the PRINT button, is active for the saved sessions too.

  • Page 73: Firmware Update

    Please see the online Noise Studio Handbook for details. Note: option HD2010.O1 “Third Octave” requires the laboratory Calibration of filters and can normally installed at Delta Ohm technical department. - 73 HD2010UC/A V4.1...

  • Page 74: Battery Symbol And Battery Replacement

    As an alternative to alkaline batteries, you can use rechargeable batteries. Batteries with lower capacity usually show greater impedance, causing a worsening of the electrical noise generated by the sound level meter, with repercussions on the measurement dynamic. Therefore zinc-carbon and rechargeable NiCd batteries are not recommended. - 74 HD2010UC/A V4.1...

  • Page 75: Instrument Storage

    3. High temperature source near the instrument. 4. Presence of strong vibrations. 5. Steam, salt and/or corrosive environments. The instrument case is in ABS plastics material and the protection belt in rubber: do not use any solvent for cleaning. - 75 HD2010UC/A V4.1...

  • Page 76: Serial Interface

    USB master able to supply with the necessary power and to manage the communication. The sound level meter HD2010UC/A is equipped with a serial connecting cable for PC with COM type ports (code HD2110RS ) or USB (code HD2110USB ).
  • Page 77 The following signals are connected to the 9 pin sub D male connector of the HD2110RS cable: Direction Signal Description DCE >> HD2010UC/A DCE - CD DCE ready – Carrier detect DCE >> HD2010UC/A Receiving data channel HD2010UC/A >> DCE Transmitting data channel HD2010UC/A >>...

  • Page 78: Communication Protocol

    KEY:?CRLF Provides the command list of the KEY group STT:?CRLF Provides the command list of the STT group STT:<COMMAND>:?CRLF Provides the current status of the specified command DMP:?CRLF Provides the command list of the DMP group - 78 HD2010UC/A V4.1...

  • Page 79: Set Group (Setup)

    Trigger activation delay in seconds from 0 to 10 EVN_OFF_TIME Trigger deactivation delay in seconds from 0 to 255 EVN_PRINT Enabling event trigger printing Enabling Auto-Store function (ON/OFF, default: OFF) AUTO_STORE SLM+PROF_DLOGGER Continuous recording of SLM and PROFILE parameters (ON/OFF, default: ON - 79 HD2010UC/A V4.1...
  • Page 80 Statistical recording (ON/OFF, default: OFF) CAL_LEVEL Acoustic calibrator level in dB (90.0 ÷ 130.0, default: 94.0) MIC_CORR Acoustic range correction WND_SHL_CORR Wind-shield correction (ON/OFF, default: OFF) Acquisition delay in s, m (1÷59) or h (1÷99) SEQ_TIMER - 80 HD2010UC/A V4.1...
  • Page 81 The value that some parameters can take is listed in the following table (default value in bold print). Parameter Value 1.2k 2.4k 4.8k BAUD_RATE 9.6k 19.2k 38.4k 57.6k 115.2k 230.4k RS232 MODEM DEVICE PRINTER INPUT_GAIN ERASE_TIME SING INT_MODE MULT REPORT_TIME SPECT_AUX_POND EVN_TRIGGER MIC_CORR WND_SHL_CORR EVN_PRINT - 81 HD2010UC/A V4.1...

  • Page 82: Key Group

    PROG key PAUSE PAUSE key RUN key SELECT SELECT key UP key MODE MODE key RIGHT RIGHT key ENTER ENTER key DOWN DOWN key HOLD ALPHA key CURSOR HOLD key CLEFT CURSOR key CRIGHT CURSOR LEFT key - 82 HD2010UC/A V4.1...

  • Page 83: Stt Group (Status)

    Displays the time profile of a selectable parameter OCTAVE Displays the spectrum by octave bands THIRD_OCTAVE Display the spectrum by one-third octave bands PROB_DISTR. Displays the level distribution of probabilities CUMUL_DISTR. Displays the percentile levels graph - 83 HD2010UC/A V4.1...

  • Page 84: Dmp Group (Dump)

    Clears memory Data download sequence is: • DMP:ON\r\n The heading ending in the string “MEMORY DUMP\r\n” is printed if there are any data on memory • DMP:RECORD\r\n Prints the previous record in binary format • DMP:NEXT_RECORD\r\n - 84 HD2010UC/A V4.1...
  • Page 85 Prints the current record in binary format. If this is the last record, it prints the string “END OF DUMP\r\n” • DMP:CLEAR\r\n (optional) Clears memory • DMP:OFF\r\n Ends data dump Data dump can be interrupted through the sequences: • DMP:OFF\r\n Ends data dump - 85 HD2010UC/A V4.1...

  • Page 86: Connection To A Modem

    The configuration is carried out automatically by the sound level meter itself, according to the following steps. 1. Connect the modem to the HD2010UC/A by means of the HD2110CSM special cable with M12 connector. 2. Connect the modem to the telephone line and the power supply.

  • Page 87: Connection To A Printer

    3. Parity: None 4. Stop bits: 1. 5. Handshaking: Xon/Xoff 6. Autofeed: Enabled. Connect the HD2010UC/A sound level meter to the printer by means of the special HD2110RS ca- ble. Follow the instructions in the documentation supplied with the printer. - 87 HD2010UC/A V4.1...

  • Page 88: Connection To Apc With Usb Interface

    ONNECTION TO A WITH INTERFACE The HD2010UC/A sound level meter fitted with USB interface can be connected to a PC’s USB port by using the HD2110USB cable. The USB port connection requires the previous installation of a driver contained in the Noise Studio software.

  • Page 89: Installation Notes

    The following items should appear: • “Port (COM and LPT) >> USB Serial Port (COM#)”. The value # is the number assigned to virtual serial port. • “Controller USB (Universal serial bus) >> USB serial converter” - 89 HD2010UC/A V4.1...
  • Page 90 When USB cable is unplugged, the above items will disappear and they will appear again as soon as the instrument is plugged to USB port. In the documentation supplied with the Noise Studio CDRom, it’s available a detailed version (in- cluding images) of the USB driver management guide. - 90 HD2010UC/A V4.1...

  • Page 91: Hd2010Mc Memory Card Reader

    4. Select the path of the card to be formatted and confirm with ENTER. 5. On the following screen, ensure that the parameter “File System = FAT” has been selected and press START: the card will be formatted. - 91 HD2010UC/A V4.1...

  • Page 92: Connection Of Hd2010Mc To The Sound Level Meter And Use Of The Memory Card

    NOTE: Slipping off the memory card while the sound level meter is running and interface is connected causes the loss of all data. In order to replace the memory card, switch off the sound level meter. - 92 HD2010UC/A V4.1...

  • Page 93: For Using Data Directly From Pc

    The Navigator program is not able to manage registrations which have been effected with external devices as interface for HD2010MC memory card. ECHNICAL SPECIFICATIONS Type of card MMC and SD Maximum capacity Power supply provided by sound level meter Function indicator LED on the reader Connector 8-pole female M12 - 93 HD2010UC/A V4.1...

  • Page 94: Technical Specifications

    TECHNICAL SPECIFICATIONS The HD2010UC/A sound level meter is a type 1 or 2 integrating sound level meter with frequency analysis by octave and third octave bands ( with “Third Octave” option ), as well as with statistical analysis. HD2010UC/A complies with the following standards...

  • Page 95: Metrological Characteristics

    DSP allows obtaining a Class 1 response according to IEC61672:2002. The HD2010UC/A is also available in the Class 2 version. The frequency response of the microphone depends on the presence of devices like windshield HD SAV or all-weather protection unit HD WME.
  • Page 96 Menu >> Calibration >> Shield >> WME. With this setting applied, HD2010UC/A sound level meter with HD WME protection, fully complies to type 1 specifications according to IEC 61672 standard; in such configuration, when used in vertical position, the sound level meter is able to measure accurately environmental noise from above (0°...
  • Page 97 Minimum measurable level equal to 60dBA with carrier from 26 MHz to 1 GHz and amplitude equal to 10V/m modulated 80% at 1 kHz. Reference Conditions The measuring range is that with input gain equal to 10 dB. The level corresponds to 94 dB. - 97 HD2010UC/A V4.1...

  • Page 98: Electrical Characteristics

    The maximum tolerable sound level with UC52 microphone is 146 dB. The level of the electrical signal applicable to the microphone input, despite the replacement of the microphone capsule with the proper capacitive adapter, must not exceed 10Vrms. - 98 HD2010UC/A V4.1...

  • Page 99: Statistical Analysis

    Measurement range: 30dB ÷ 140dB. 4 percentile levels, programmable between L to L Statistical graphs calculation and display . Graph of the level distribution of probabilities Graph of the percentile levels from L to L PECTRAL NALYSIS Sampling: 48 kHz - 99 HD2010UC/A V4.1...

  • Page 100: Reverberation Time Measurement ( Optional )

    Level distribution of probabilities in 0.5dB, 1dB or 2dB classes. Graph of the percentile levels from L1 to L99. Display mode for the reverberation time measurement Numeric screen providing the chosen band: source maximum level background noise level of the environment EDT, T(10), T(20), T(30) - 100 HD2010UC/A V4.1...

  • Page 101: Storage Of Measurements

    (D.L.194/2005 and D.M. 16/03/1998) and EU legis- lation regarding the acoustic pollution and the mapping of the territory. (NS2A analysis re- quest “advanced data logger” to be installed in the sound level meter). - 101 HD2010UC/A V4.1...

  • Page 102: Other Characteristics

    Continuous Printing (Monitor). Case Dimensions (Length x Width x Height): 445x100x50mm equipped with preamplifier, Weight: 740g (batteries included) Materials: ABS, rubber Time Date and time: clock and date updated in real time maximum deviation is less than 1min/month - 102 HD2010UC/A V4.1...

  • Page 103: Reference Standards

    • Noise emission from machines D.L 262 del 04/09/2002, Directive 2000/14/CE and 2005/88/CE • Measurement of building’s passive acoustic requirements and acoustic classification of building according to: EN ISO 3382 and UNI 11367:2010 (”Reverberation Time” option required). - 103 HD2010UC/A V4.1...

  • Page 104: Order Codes

    ORDER CODES HD2010UC/A kit 1: Kit HD2010UC/A class 1 integrating sound level meter and analyser with oc- tave bands spectrum analysis, 4 MB memory and advanced data logging functions, complete statistical analysis, capture and analysis of sound events. The Kit includes: type 1 HD2010UC/A sound level meter, UC52/1 microphone,...
  • Page 105 The analyses are performed in compliance with the national (D.L. 194/2005 and D.M. 16/03/1998) and EU legislation re- garding the acoustic pollution. Spare parts and accessories - 105 HD2010UC/A V4.1...
  • Page 106 100m. Requires the HDP079A02 microphone adapter. HD2010PNE4H : preamplifier for MC24EH ¼” microphone. Equipped with CTC calibration de- vice for electric calibration and driver for cable up to 100m. Requires the HDP079A02 micro- phone adapter. - 106 HD2010UC/A V4.1...

  • Page 107: What Shall I Do If

    This chapter deals with the step by step description on how to carry out the most recurrent measurements in the acoustic field with the HD2010UC/A sound level meter. If necessary, see the description of the key functions from page 114 and the different display modes from page 12 onwards.
  • Page 108 Press REC for 2 seconds at any time to store the displayed data. As soon as data are saved on memory, a screen will allow you to enter the recording title. Activating the single data recording, while in STOP mode, is first asked to choose between automatic (Auto-Store) or manual recording). - 108 HD2010UC/A V4.1...

  • Page 109: Storage Of Measurements

    TORAGE OF EASUREMENTS The HD2010UC/A offers three different storage modes: 1. The Continuous Recording (press REC and START keys simultaneously) implies the storage of the SLM screen-page (2 samples a second) together with the time profile of the A weighted sound pressure level with FAST constant time (8 samples a second).

  • Page 110: Measurement Of Noise Dose

    Up to 4 percentile levels are selectable in the SLM display mode (MENU >> Instrument >> Measurement >> Percentile Lev. 1-4), programmable between L and L The statistical analyzer samples the sound pressure A weighted level with FAST time constant, 8 times a second; the levels - 110 HD2010UC/A V4.1...

  • Page 111: Data Printing

    RUN mode. The Monitor works independently from any recording of data on memory. Using the Monitor function it is possible, with the help of a PC, to make measurements limited only by the PC storage capacity. - 111 HD2010UC/A V4.1...

  • Page 112: Troubleshooting

    TROUBLESHOOTING The HD2010UC/A sound level meter is provided with a diagnostic program (DIAGNOSTIC CHECK) that automatically checks the instrument main parameters. This program can be run at any time to check the instrument operating conditions (see description on page.57). One of the parameters being analyzed is the sensitivity of the amplification channel that includes, through a charge partition circuit (CTC), the microphone capacity.

  • Page 113: Miscellaneous Problems

    5. It is not possible to activate continuous recording. By pressing REC and RUN, the instrument starts measurements without recording. The instrument does not have available memory for additional data. Download the data and/or erase the memory. - 113 HD2010UC/A V4.1...

  • Page 114: Keyboard Description

    “WARNING! Stop the meas- urement to continue". SELECT PARAMETER WARNING! Stop measurement to continue. Press YES and then ON/OFF to switch off the instrument. - 114 HD2010UC/A V4.1...
  • Page 115 MENU key The HD2010UC/A sound level meter requires, according to its use, many parameters to be set. If you press MENU, you can access all instrument parameters, for the following functions: •...
  • Page 116 The selected program is performed upon pressing the SELECT key; some programs can be aborted at any time by pressing RIGHT on the keypad. When you access the programs, the available mem- ory will be displayed, as well as battery level, date and time. - 116 HD2010UC/A V4.1...
  • Page 117 During the replay of stored data, if you press this key while in pause, the next data will be dis- played; if you press it and hold it down, the replay will be executed in fast forward mode. - 117 HD2010UC/A V4.1...
  • Page 118 The LEFT key selects the previous character in the active line of the menu. It jumps to a previous parameter during the selection of a measurement variable that needs the definition of more than one parameter (see SELECT). It reduces (ZOOM-) the vertical scale of frequency spectra graph. - 118 HD2010UC/A V4.1...
  • Page 119 The cursor can also select the wide band level on the right side of the display. - 119 HD2010UC/A V4.1...
  • Page 120 It is used in the FFT screen to move the frequency axis upward when the cursors are not active. It is used in the decay profile screen (reverberation time measurement) it is used to move the fre- quency axis upward when the cursors are not active - 120 HD2010UC/A V4.1...

  • Page 121: Annex

    ANNEX A1. HD2010UC/A MEASURING PARAMETERS The tables below gives the acoustic parameters that can be displayed in numeric or graphic format, with the respective abbreviations used to identify them. ACOUSTIC DESCRIPTORS (NUMERIC DISPLAY) Instantaneous acoustic levels updated every 0.5s Wideband WEIGH.

  • Page 122: Acoustic Descriptors (Graphic Display)

    LeqI A weighted Equivalent continuous sound LAIeq pressure level, with Impulse time constant. It’s displayed the maximum level every 0.125s sampled 128 times per second. It is possible to program up to 4 different percentile levels. - 122 HD2010UC/A V4.1...
  • Page 123 Average spectrum (AVR) by octave and one-third octave bands Statistical analysis on a selected parameter PARAME PARAMETER ABBREV. DEFINITION WEIGH. FREQ. Equivalent continuous level X=Z, C, A Sound pressure level with FAST time con- X=Z, C, A stant (SPL FAST Peak level X=Z, C - 123 HD2010UC/A V4.1...

  • Page 124: A2. Memory Capacity During The Logging Function

    CAL ANALYSIS (Menu >> Data Logger >> Report >> Statistics >> ON: 6*(7+10++66+481) = 3384 byte/h >> maximum duration = 4 MB/3384 ~ 51 days An additional 4MB expansion memory is available as an optional accessory doubling the memory capacity. - 124 HD2010UC/A V4.1...

  • Page 125: A3: The Sound

    Borderline cases are: the “pure tone”, a sound made up by a variation of pressure at a given frequency; and the “white noise”: a sound uniformly distributed throughout all frequencies (it sounds like the TV audio rustling when it is not tuned in any station). - 125 HD2010UC/A V4.1...
  • Page 126 In case of sound pulses, we know that the ear has a reduced perception already for durations lower than 70 ms. For this reason, noises with an impulsive feature are usually considered, at the same level, more dangerous. - 126 HD2010UC/A V4.1...

  • Page 127: A4: Sound Level Meter

    891 Hz and 1122 Hz for third octave bands. The analysis result is usually shown in a graph called “spectrogram” where the sound levels are represented in graphic format for each of the bands in which the sound spectrum - 127 HD2010UC/A V4.1...

  • Page 128: Time Constants And Exponential Weighting

    For this reason, a time constant has been defined in the international standards (IEC 60651/IEC 61672), called IMPULSE, very fast (35ms) for increasing sound pressure levels and very slow (1.5s) for de- creasing levels. - 128 HD2010UC/A V4.1...

  • Page 129: Equivalent Continuous Sound Pressure Level

    This is particularly important in assessing the impact of the sound produced by machines or general pollution sources on the auditory apparatus. It is obvious that a strong noise generates a - 129 HD2010UC/A V4.1...
  • Page 130 The sound exposure level is defined as the constant sound level for 1 second that contains the same energy of the event being examined. By standardizing the SEL value (1 second), it is possible to compare sound events with different durations. - 130 HD2010UC/A V4.1...

  • Page 131: Statistical Analysis

    The integrating sound level meters directly supply the time integrated parameters, such as equivalent level and sound exposure level, in addition to maximum and minimum. On the other hand, the statistical analysis is a prerogative of statistical analyzers. - 131 HD2010UC/A V4.1...

  • Page 132: Noise Dose

    Vice-versa, a microphone optimized for the free field will provide too low values when measuring in reverberant fields and in all cases in which it will not be oriented towards the sound source. - 132 HD2010UC/A V4.1...

  • Page 133: Environmental Influence

    Humidity The HD2010UC/A sound level meter and the microphone are not affected by relative humidity up to 90%. However, protect the microphone from rain and snow and keep it clean. In case of bad weather, it is suggested to use a windshield and, in case of use in very humid environments, the proper microphone dehumidifier should be applied.

  • Page 134: Classification Of Acoustic Signals

    A frequency analysis can be made with a sequential spectrum analyzer, measuring the sound level band by band until the interested spectrum is covered. Spectra of periodical station- ary signals will be striped, which means that they will have non-null levels only in the bands with - 134 HD2010UC/A V4.1...
  • Page 135 At the end of the measurement time, the distribution of probabilities will be first calculated, dividing the content of any class by the total number of samples and multiplying the result by 100; - 135 HD2010UC/A V4.1...
  • Page 136 For example, in the measurement of vehicle traffic noise, the “Traffic Noise Index” has been de- fined as: TNI = 4⋅ (L ) + L That provides higher values in the case of a sound level strongly fluctuating and thus characterized by a bigger difference between L and L - 136 HD2010UC/A V4.1...

  • Page 137: A5: Architectural And Building Acoustics

    343m/s at normal temperatures. The well known effect of the echo is associated to the delay time between the direct wave and the reflected wave equal at least to one twentieth of a second, with travel differences of at least 20m. - 137 HD2010UC/A V4.1...
  • Page 138 “ diffuse field ”. In practice, this approximation is valid above Schroeder’s frequency in environments that are not excessively absorbing and at a sufficient distance from the sound source and the walls. With this - 138 HD2010UC/A V4.1...

  • Page 139: A5.1 - Measurement Of The Sound Absorption

    The sound level meter HD2010UC/A with the optional reverberation time measurement can measure the reverberation time using both the sound source interruption technique and the impulse source technique.

  • Page 140: A5.2 - Measurement Of The Airborne Noise Sound Insulation

    Together with the measurement of the in- sulation from impact noises, it permits the classification of the acoustic insulation properties for the buildings. The reference standards are ISO 140-3 and ISO 140-4 . - 140 HD2010UC/A V4.1...
  • Page 141 For the on-site measurements the standardized sound insulation can be calculated using the follow- ing expression: - 141 HD2010UC/A V4.1...

  • Page 142: A5.3 - Measurement Of The Tapping Noise

    The purpose of this standard is to determine a laboratory measurement method for the trans- mission of the impact noise through the ceilings by using a standardized impact generator. The re- sults obtained can be used to compare the insulating properties of the ceilings and to classify them accordingly. - 142 HD2010UC/A V4.1...
  • Page 143 The standardized impact level L is calculated as follows: − where T is the reverberation time of the receiving environment and T is the reference reverbera- tion time equal to 0.5 s. - 143 HD2010UC/A V4.1...

  • Page 144: A6. Microphone Outdoor Protection Hd Wme - Assembly, Disassembly And Maintenance

    3: 1. Remove the anti-bird spike by loosening the three hex head screws at the base of the windscreen. 2. Pull up the windscreen HDSAV3 and the rain protection. HD SAV3 HD WME2 - 144 HD2010UC/A V4.1...
  • Page 145 5. Unscrew the lock nut of the preamplifier (C) using, if required, a 14mm wrench. Be carefull not to twist the preamplifier cable. 6. Remove the preamplifier (D) by pulling it slowly down. At this point the microphone is accessi- ble and you can proceed with calibration. - 145 HD2010UC/A V4.1...
  • Page 146 To assemble completely the protection, start from step 1. If you need only to assemble the preampli- fier with the microphone after calibration, from step 4. 1. Fit the rain shield HD WME2 on the metal grid support. HD WME2 - 146 HD2010UC/A V4.1...
  • Page 147 2. Insert the wind screen HD SAV3. HD SAV3 3. Apply the anti-bird spike and secure it using the three hex head screws located on the support at the base of the windscreen. - 147 HD2010UC/A V4.1...
  • Page 148 4. Insert the preamplifier (A) into the support pushing slowly upward until it’s limit position. 5. Screw the gland (B) using, if necessary, a 14mm wrench. Be careful not to twist the preamplifier cable. - 148 HD2010UC/A V4.1...
  • Page 149 6. Insert the cable connected to the preamplifier through the system (C) and screw the stern to the support. 7. Screw the terminal placed at the lower end of the stern (D) releasing the cable laterally. - 149 HD2010UC/A V4.1...
  • Page 150 8. To secure the outdoor protection you can use the threaded end (D) or you can apply the fitting (E) on the tripod. The terminal (E) has two threads, ½ “ and ¼”. - 150 HD2010UC/A V4.1...

  • Page 151: A7: Definitions

    Sound Pressure Level: is defined by the expression: ⋅ where: = pressure effective value. = reference sound pressure. sound pressure level (also referred to as SPL) is expressed in dB. - 151 HD2010UC/A V4.1...
  • Page 152 (ξ) = the instantaneous squared pressure. = the square of reference pressure. The equivalent sound pressure level can be frequency weighted. For example, L will give the Aeq,T equivalent sound pressure level over T interval, frequency weighted with A filter. - 152 HD2010UC/A V4.1...
  • Page 153 In the example: T = 1 h + 2 h + 5 h = 8 h. The result is: ⎡ ⎤ ⋅ ⋅ ⋅ ⋅ ⎢ ⎥ ⎣ ⎦ Sound Exposure Level: represented by the L symbol (or SEL), it is defined over a given t1 ÷ t2 time interval like: - 153 HD2010UC/A V4.1...
  • Page 154 = Criterion Level for a daily exposure corresponding to 100% of the dose. = Exchange Rate. = parameter independent of the exchange rate and equal to: • 10 for Q = 3 dB • 5/log2 for Q = 5 dB • 4/log2 for Q = 4 dB - 154 HD2010UC/A V4.1...

  • Page 155: Table Of Contents

    TABLE OF CONTENTS CONNECTOR FUNCTION ............................. 4   INTRODUCTION ..............................5   HD2010UC/A Block Diagram ..........................8   The Microphone ..............................9   The Outdoor Microphone Unit HD WME ......................9   The Preamplifier ...............................10   The Instrument ..............................11  ...
  • Page 156 TATISTICAL NALYSIS ..............................111   RINTING TROUBLESHOOTING ............................112   ........................112   ESTORING ACTORY ALIBRATION ........................112   ESTORING ACTORY ALIBRATION ..........................113   ISCELLANEOUS ROBLEMS KEYBOARD DESCRIPTION ..........................114   ANNEX ................................... 121   - 156 HD2010UC/A V4.1...
  • Page 157 A1. HD2010UC/A MEASURING PARAMETERS ..................... 121   ACOUSTIC DESCRIPTORS (GRAPHIC DISPLAY) ..................122   ACOUSTIC DESCRIPTORS THAT CAN BE STORED ................122   A2. MEMORY CAPACITY DURING THE LOGGING FUNCTION ..............124   A3: THE SOUND..............................125   A4: S .............................
  • Page 158 OTES - 158 HD2010UC/A V4.1...

  • Page 160: Serial Number

    This guarantee must be sent together with the instrument to our service centre. IMPORTANT: Guarantee is valid only if coupon has been correctly filled in all details. HD2010UC/A Instrument Code: Serial Number...
  • Page 161 Via Marconi 5 | 35030 Caselle di Selvazzano | Padova | ITALY Phone +39 049 8977150 | Fax +39 049 635596 www.deltaohm.com | info@deltaohm.com The quality level of our instruments is the result of the constant development of the product. This may produce some differences between the information written in this manual and the instrument you have purchased.
  • Page 162 GHM GROUP – Delta OHM | Delta Ohm S.r.l. a socio unico Via Marconi 5 | 35030 Caselle di Selvazzano | Padova | ITALY Phone +39 049 8977150 | Fax +39 049 635596 www.deltaohm.com | info@deltaohm.com V4.1 09/03/2018...

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