Page 1
Sound Level Meter class 1 according IEC 61672-1:2003
Version 2.12b
March 15, 2017
c
SINUS Messtechnik GmbH
Foepplstrasse 13, 04347 Leipzig, Germany
http://www.soundbook.de
info@soundbook.de
Page 2
c
SINUS Messtechnik GmbH
All rights reserved. No part of this manual may be reproduced, stored in a retrieval system or transmitted,
in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior
written permission of SINUS Messtechnik GmbH. We reserve the right to alter the contents of this manual
without prior notice. SINUS Messtechnik GmbH accepts no responsibility for technical or typographical
errors or deficiencies in this manual. Furthermore, SINUS Messtechnik GmbH disclaims all liability for
damage occurring directly or indirectly as a result of the delivery, performance or usage of this material.
All products or services mentioned in this document are the trademarks or service marks of their respective
companies or organizations.
Manual Tango_Plus 2 of 30 SINUS Messtechnik GmbH
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CONTENTS
Contents
1 General information and design 6
1.1 Important notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2.1 Replace batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.3.1 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.3.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4 First use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.5 Software installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.5.1 Tango_Plus driver installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.5.2 Tango-Utilities installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.6 Calculated values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.6.1 Calculated sound levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.6.2 Calculated spectra . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2 Appliance 12
2.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2 Device configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.1 Configuration using Tango-Utilities . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.2 Manual configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.3 Tango-Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.3.1 Info Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.3.2 Setup Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.3.3 Display Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.3.4 Octave Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.3.5 Data-Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.3.6 Data export . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.4 Measure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.4.1 Measure low sound levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.4.2 Overload and Underrange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.5 Calibrate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.5.1 Calibrate using Tango-Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.5.2 Calibrate Tango_Plus directly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3 Testing information 21
3.1 Acoustic test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.1.1 Microphone alignment for measuring according to IEC 61672-1:2003. . . . . . . . 21
3.2 Electrical test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.2.1 EMC test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.2.2 Level linearity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4 Technical specifications 22
4.1 Level linearity range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.2 Linear operating ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.3 Self-generated noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.3.1 Measurement of low noise levels . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.4 Frequency weighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.5 Microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.5.1 Random incidence and free-field correction . . . . . . . . . . . . . . . . . . . . . 25
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CONTENTS
4.6 Details on EMC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.6.1 Directional characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.6.2 Frequency response of the microphone . . . . . . . . . . . . . . . . . . . . . . . 26
4.7 Effect of environmental conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.7.1 Mains frequency and high-frequency fields . . . . . . . . . . . . . . . . . . . . . . 26
4.7.2 Effect of mechanical vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.8 Connection assembly of the detachable microphone . . . . . . . . . . . . . . . . . . . . . 27
5 Accessories 28
5.1 Technical specifications of the calibrators . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6 Declaration of Conformity 29
INDEX 30
ATTENTION! The detachable microphone must be used only with Tango_Plus! Other-
wise it may be damaged.
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CONTENTS
Preface
Thank you for choosing the product TangoTMby SINUS Messtechnik GmbH. Please read this manual carefully before using the measuring system. We recommend you to perform several test measurements to get
familiar with the instrument before using it for important measuring tasks. The manual includes the following
signs to indicate important information:
NOTICE! These are information on the efficient use and correct handling of the ana-
lyzer as well as additional information.
CAUTION! These instructions shall avoid any hardware damages or dangers for users.
ATTENTION! These instructions shall avoid any measurement mistakes, hardware dam-
ages etc.
Please feel free to contact us for any questions on the functionality and operation of the instrument. Direct
your questions or catalogue requests as well as requests on spare parts and accessories to the following
address:
Address: SINUS Messtechnik GmbH
Föpplstraße 13
04347 Leipzig, Germany
Telephone: +49-(0)341-24429-33
Fax: +49-(0)341-24429-99
E-mail: info@soundbook.de
Web: http://www.soundbook.de
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1 GENERAL INFORMATION AND DESIGN
1 General information and design
Tango_Plus is an integrating sound level meter designed according to IEC 61672-1:2003, accuracy class
1 and group Z. It can measure also 1/1 and 1/3 octaves according to IEC 61260. This manual refers to
firmware version 2.12b.
NOTICE! Tango_Plus may perform measurements that require an official verification
of the calibration and that are legally binding.
(type approval applied)
ATTENTION! If Tango_Plus is used for legally binding measurements, only original ac-
cessories shall be used.
For performing legally binding measurements with Tango_Plus only the following accessories are admitted
according to the type approval :
• Tango_Plus (907004.2)
• Calibrator Cal200 1/2” type1 PCB (800934.4)
• Calibrator Type 4231 B&K (800043.2)
• Windscreen W2 (800253.0)
Using Tango_Plus the following sound level values may be measured: LAF, L
L
, L
, L
, L
, L
, L
-L
ASmax
ASmin
Cpeak
Aeq
Ceq
Ceq
, LAE, L
Aeq
AFT
, L
AFTeq
, L
AFTeq-LAeq
, L
Cpeak>n
und L
these values is given in table 1.1.
NOTICE! The number of the firmware version can be displayed (section 2.2.2).
, L
AFmax
AFn
, LCF, L
AFmin
CFmax
. A detailed description of
, L
1.1 Important notes
When measuring with the device, please consider the following notes:
• Use the device as described in this manual only.
• Despite of its robust design, protect the device from any unnecessary bumps and vibrations as well
as humidity and dirt.
• Do not touch or moisten the sensitive microphone membrane during work.
CFmin
, LAS,
• Pay attention to the permissible temperatures for using the device.
• Always switch off the device after using.
• Do not expose the device to excess temperature as for example in a car with direct sunlight.
• If necessary, clean the device carefully without using solvents.
• Do not disassemble the device. Do not try to repair the device in case of malfuntion. Such manipulation
will always cause the loss of warranty and major damages. Make a note of the occuring errors and
send us the device for repair.
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1.2 Power supply
1.2 Power supply
The device is powered by two batteries of the type LR6A (nominal voltage 1.2 . . . 1.5 V, primary cell or
rechargeable). Via the according USB cable Tango_Plus can be powered by an external source. For that
the cable has to be connected to a PC or to the public power supply via the provided adapter. The USB
access is totally separated from the internal batteries, so that the batteries are not affected, but accumulators are not recharged, too. For legally binding measurements Tango_Plus has to be powered by battery,
disconnected from the public power supply.
1.2.1 Replace batteries
The battery compartment is located on the back at the bottom of the device (figure 1.1 bzw. 1.2). Follow the
instructions below to replace the batteries:
• Move up the lock of the battery compartment.
• Remove the lid.
• Remove the discharged batteries.
• Insert the new batteries paying attention to the polarity (figure 1.2)
• Switch on the device and check the battery status on the display (figure ??).
Figure 1.1: Closed battery compartment Figure 1.2: Open battery compartment
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ATTENTION! Changing the batteries causes loss of time, if Tango_Plus is not connected
1.3 Design
1 GENERAL INFORMATION AND DESIGN
to external power supply at the same time.
Tango_Plus contains the following parts:
detachable microphone with preamplifier, casing, display, keypad and battery
compartment. Opening the device is
only necessary for replacing the batteries (figure 1.2.1).
At the bottom of the device the USB
socket is located for connecting the
device to a PC (type mini five-pole). Next
to it there is a socket for a 3.5 mm stereo
jack. This monitoring output is used
to connect a headset for example, it is
not approved for legally binding measurements. Furthermore Tango_Plus
provides a socket to connect a printer
directly.
A detailed description of the display and
keypad is given in the paragraphs 1.3.2
and 1.3.1. Pay also attention to the notes
given in paragraph 1.1.
Figure 1.3: Design of the device
ATTENTION! For legally binding measurements Tango_Plus has to be powered only by
battery. The monitoring output is not approved for this.
1.3.1 Keypad
If the device is not controlled via PC, you may also use the keypad for setup. In the middle it contains arrow
keys with an OK-button in the center. The top corners contain function keys, whose functions are indicated
by symbols on the display. The key below on the left is used to start and pause measurements, while the
one on the right switches on the device and toggles the brightness level.
1.3.2 Display
The display shows the measured values and is used for setting up the device. It is refreshed every 500 ms.
The status bar on the top of the display shows symbols for: Battery, Memory, Play/Pause, Storage, Calibra-
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1.3 Design
tion, USB connection, Level of brightness. There are three basic modi to display spectra, history data or
numeric values:
The Third Octave Display shows a spectrum in
the main part with live values as bars and L
values as roof top. Via left/right keys the spectral cursor can be moved to select signle bands.
The band level and the frequency are displayed
above the graph as well as the measurement duration. On the left LAFand LCFare displayed as
bars. The bottom shows numerically one sound
level value, which can be switched using the
up/down keys.
Figure 1.4: Third Octave Display
eq
Figure 1.5: History Display
Instead of a spectrum the History Display shows
two level graphs in the main part. Which levels are shown is set in the configuration (section 2.2.2). The time length of the x-axis can be
toggled with the left/right keys.
The Numeric Display shows the value of the levels selected at the bottom.
Figure 1.6: Numeric Display
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1 GENERAL INFORMATION AND DESIGN
1.4 First use
Pay attention to the following notes before using the device for the first time:
• Read carefully the manual and follow the instructions before using the device.
• Insert the batteries as described in section 1.2.1.
• Install the required software on a PC (driver and Tango-Utilities).
• Connect the device with the PC using the supplied USB cable.
• Switch on the device by pressing the On/Off-Button (minimum 3 seconds).
1.5 Software installation
First TANGO driver must be installed for that Tango_Plus is recognized via USB connection. Second TangoUtilities should be installed for configuration of Tango_Plus settings and export of data.
1.5.1 Tango_Plus driver installation
Please follow the instructions below to install the TANGO driver on a PC. You find the file on the enclosed CD
or on the installation CD of the application software. Use the Windows Explorer to start the driver installation
programme. Perform the install setting and confirm always. Depending on the system performance this
procedure may take a few minutes.
1.5.2 Tango-Utilities installation
Installing the software Tango-Utilities resembles the installation procedure of most Windows applications.
Follow the instructions below:
• Run the installation program (Tango_Utilities_Version.exe).
• The first window shows the software version. Click on
• Set the installation directory in the next window. Click on
• In this dialog you may specify the directory in the Windows Start Menu. Click on
the next dialog.
• This dialog summarizes your settings. Click on
Install
Next
to continue to the next window.
Next
to continue to the next dialog.
to confirm and continue.
Next
to continue to
• Finish the installation by clicking on
Manual Tango_Plus 10 of 30 SINUS Messtechnik GmbH
Finish
.
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1.6 Calculated values
1.6 Calculated values
Tango_Plus can calculate several sound levels as well as full and 1/3 octaves.
1.6.1 Calculated sound levels
Level Description
L
AF
L
AFmax
L
AFmin
L
CF
L
CFmax
L
CFmin
L
AS
L
ASmax
L
ASmin
L
Cpeak
L
Aeq
L
Ceq
L
- L
Aeq
Ceq
L
AE
L
AImax
L
AFT
L
AFTeq
L
- L
AFTeq
L
Cpeak>n
L
AFn
Table 1.1: Calculated sound levels
Sound pressure level, frequency weighting A, Fast (125 ms time constant)
Level maximum of LAFfor the entire measuring period (on the display) or of the last storing interval (stored data).
Level minimum of LAFfor the entire measuring period (on the display) or of the last storing interval (stored data).
This value is only available by Tango-Utilities.
Sound pressure level, frequency weighting C, Fast (125 ms time constant)
Level maximum of LCFfor the entire measuring period (on the display) or of the last storing interval (stored data).
Level minimum of LCFfor the entire measuring period (on the display) or of the last storing interval (stored data).
This value is only available by Tango-Utilities.
Sound pressure level, frequency weighting A, Slow (1 s time constant)
Level maximum of LASfor the entire measuring period (on the display) or of the last storing interval (stored data).
Level minimum of LASfor the entire measuring period (on the display) or of the last storing interval (stored data).
This value is only available by Tango-Utilities.
Peak value of the C-weighted sound pressure level
Equivalent continuous sound pressure level for the entire measuring period (on the display) or of the last storing
interval (stored data), frequency weighting A.
Equivalent continuous sound pressure level for the entire measuring period (on the display) or of the last storing
interval (stored data), frequency weighting C.
Difference of the values L
Ceq
and L
Aeq
.
Sound exposure level, frequency weighting A
Maximum sound impulse level, frequency weighting A
Maximum LAFof the last 5 s interval.
Equivalent continuous sound pressure level calculated from the L
levels during the entire measuring period
AFT
according to DIN 45645-1.
Difference of the values L
Aeq
Time in which the L
Cpeak
and L
AFTeq
Aeq
exceeded n dB.
.
Percentile levels can be calculated from the LAF(n = 1, 2, 3). There are 7 standard percentiles (1, 5, 10, 50, 90,
95, 99), but also user defined percentiles are possible.
Data can be stored up to an amount of 32 MB.
NOTICE! All sound level values may only be reset by manual Start/Stop operation
and the integration time for the equivalent continuous sound pressure levels
may only be set with this operation.
NOTICE! All integrated sound levels listed in table 1.1 will be displayed on the device
immediately after finishing a measurement/integration.
1.6.2 Calculated spectra
Tango_Plus can calculate full and 1/3 octaves. A, C or Z weigthing may be applied. The frequency range is:
10 Hz - 20 kHz. The storage interval defines the number of individual spectra, that are linear averaged.
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2 APPLIANCE
2 Appliance
2.1 General information
Tango_Plus offers different operating modes:
OFF The device is off and no measurements can be performed. Only the clock is running inside.
Stop The device is running. The LAFand the LCFare measured and displayed. If Record mode is enabled,
the circle symbol is displayed.
Run The device is on and measuring ( is blinking). If data recording has been activated, data will be
stored ( is blinking). You may read the instantaneous measurement values on the display and move
between the values using the Up/Down keys.
Pause A running measurement is paused ( is displayed) and so the measuring time. The measurement
can be stopped or proceeded any time.
Display Description
The device is in Pause-Mode. The measurement has been paused and the measuring time has been stopped.
Data recording is active. The measured data will be stored in Run-Mode.
The device is in Run-Mode (Symbol blinks). The measurement has been started. If data recording is active, the
measured data are stored. If data recording is inactive, no data will be stored.
Table 2.1: Display of run modes
2.2 Device configuration
You may configure the device via PC using the software Tango-Utilities or manually.
2.2.1 Configuration using Tango-Utilities
For configuring the device via PC, you have to install the TANGO Driver and Tango-Utilities software first
(section 1.5). Possible settings in Tango-Utilities are adjusted in the Setup tab. In the column Display
use the check boxes to enable individual values and comboboxes to set the graphic refresh rate for display.
Several values offer optional parameters, which you may set in the column Options. By the buttons
Save
and
you may open a configuration from the PC or save the current one to it. The same can be done
by using the menu points File → "‘Open Configuration"’ and File → "‘Save Configuration As"’. The
current configuration is transmitted to Tango_Plus by clicking on
Apply
.
In the column Storage the correspondig storage conditions are adjusted. The storage can be turned off,
limited to one finish result or done in regular intervals. For the interval time span several values are provided
from 62, 5 ms up to 60 min depending on the measurement value. Even if the interval storage is selected
a finish result over the whole measurement time is calculated and stored additionally. This would always be
saved, even if the intervall storage would have been aborted because of full memory. In this case the record
symbol would stop blinking.
NOTICE! For the interval storage of the percentiles only the same interval time span
can be selected.
Open
If Synchronisation is enabled, the interval storage will be synchronised with the full hours of day time. So
every full hour the current interval is closed and a new one is started. The clock is set every time, when
connecting Tango_Plus to Tango-Utilities.
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2.3 Tango-Utilities
2.2.2 Manual configuration
The manual configuration of the device without PC is shown in the following table 2.2:
Item Description
Measurement
Record Mode Select values to be stored or just displayed.
Sync at Full Hour Synchronize time intervals to full hours.
Calibration
Start Calibration Start the process of calibration.
Calibration Level Set the calibration level.
Measurement Values (Select a sound level e.g. L
Display Location Select on which graph the value shall be shown.
Display Interval Select the rate of display refresh (500 ms, . . . , 60 min, End Result only).
Storage Interval Set the storage interval (No storage, 500 ms, . . . , 60 min, End Result only).
Print Result Decide whether the result shall be printed.
Octave Spectra
Octave Mode Select whether 1/3 or full octaves shall be measured.
Frequency Weigthing Available weigthings: Z, A, C
Display Range Adjust the scaling of the Y-axis.
Display Interval Select the rate of display refresh (125 ms, . . . , 60 min, End Result only).
Storage Interval Set the storage interval (No storage, 125 ms, . . . , 60 min, End Result only).
Storage Weigthing Available weigthings: Z, A, C
History Graph
Display Range Adjust the scaling of the Y-axis.
History Time Adjust the scaling of the X-axis.
Graph 1 Select which value shall be displayed as yellow.
Graph 2 Select which value shall be displayed as green.
Device
Time Set time and select 12h or 24h format.
Display Set Display properties.
Info Read off version numbers of firmware and hardware.
Print Results
Table 2.2: Manual configuration menu of Tango_Plus
and adjust the following properties.)
AFmax
2.3 Tango-Utilities
Tango-Utilities is the basic software to configure Tango_Plus and export values from measurements. It is
not meant to perform further analysis calculations.
Status bar
The status bar displays various status information from left to right:
Connection Status: disconnected, connected, but Tango_Plus off, connected, Tango_Plus on;
Virtual COM Port;
Measurement Status: Stop, Measurement, Pause;
Record Status: Record-Mode off, Record-Mode on,
Marker Status: MARK;
Memory usage: per Hour, Day and Week
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blinken
←→ Record-Mode on (Recording);
Page 14
2 APPLIANCE
Program settings and Extended device settings
Via the main menu Settings->Program. . . the following settings are available (figure 2.1): Selection of the
connected device Tango_Plus (Connected Device), default export directory (Default Export Directory)
and the default directory for configuration data. The Extended device settings cannot be adjusted manually
without PC.
Figure 2.1: Tango-Utilities - Program settings Figure 2.2: Tango-Utilities- Extended device settings
Parameter Description
Disable Device Calibration Select this parameter to disable calibration feature on the device.
Disable display setup changes Select this parameter to lock the display settings.
Disable measurement setup changes Select this parameter to lock measurement recording settings.
Enable fixed record mode Select this parameter to activate the Record-Mode permanently.
Startup after battery replacement Automatic start of Tango_Plus after changing the batteries.
Table 2.3: Extended progam settings
2.3.1 Info Tab
You may view the software version of Tango-Utilities in the main menu selecting Help -> About (figure 2.4).
The firmware version of the device is displayed in the Info-Tab (figure 2.3).
Figure 2.3: Tango-Utilities - Info Tab Figure 2.4: Tango-Utilities - About-Box
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2.3 Tango-Utilities
2.3.2 Setup Tab
The Setup tab of Tango-Utilities (figure 2.5) provides the configuration of Tango_Plus for a measurement.
The first column shows the items, the second the configuration for display and the third for storage. Some
items provide special settings, configured in the fourth column.
Figure 2.5: Configuration in setup tab
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2 APPLIANCE
2.3.3 Display Tab
In the Display tab history values are shown (figure 2.6), which are calculated by the device during a measurement (according to the settings in the Setup-Tab). On the left side you will find a table of values which
are available for display in the graph on the right side. To select a value for graphical display click on the
individual values in the header of the graph. You may select a maximum of four values for simultaneous
display. The context menu of the graph provides Zoom and axes scaling functionality.
Figure 2.6: Show history values in Display Tab
2.3.4 Octave Tab
Figure 2.7: Show spectral values in Octave Tab
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2.3 Tango-Utilities
In the Octave tab spectral values are shown (figure 2.7), which are calculated by the device during a measurement (according to the settings in the Setup-Tab). To adjust weigthing (Z-blue, A-green, C-yellow) or
refresh rate for graphical display click on the corresponding items in the header of the graph. The context
menu of the graph provides scaling functionality. Also displayed is a coordinate cross. The vertical line
shows the current value of the selected band while the horizontal line shows the sum value.
2.3.5 Data-Tab
On the right side of the Data-Tab (figure 2.8) a table containing the recorded files is displayed. On the left
side a summary of the selected measurement is displayed. By right-clicking on an entry in the table you will
open a context menu in which you may delete the measurement (Delete) or save data to the PC (Export).
Figure 2.8: Export measurements in Data Tab
2.3.6 Data export
Measured data are saved to the internal storage of the device (32 MB). The data sets are listed in the
Data-Tab (section 2.3.5). By right-clicking you may open a context menu, that provides access to the Export
window (figure 2.9). It provides tabs for user defined metainformation, smr export for AUDITOR, txt export
(figure 2.10) for only end results as well as a tab for csv export (for excel) (figure 2.11).
The last tab include two lists. The left one shows the values which are part of the measurement, but which
have not been selected for export yet. The right list shows the values, which have been selected for export
already. To add or remove values from these lists use the buttons
export use the button
Add File
, to remove files use
Remove File
Include
.
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and
Exclude
. To add new files for
Page 18
2 APPLIANCE
Figure 2.9: Export window
Measurement file: File7
Start time: 02.06.2009 08:45:09
Duration: 2:57
Overflow: no
Underrange: no
LAFmax: 77,4 dB
LASmax: 68,5 dB
LCpeak: 103,3 dB
LAeq: 48,4 dB
LAE: 70,9 dB
LAtm5: 62,7 dB
LAtm5-LAeq: 14,3 dB
LCpeak >90dB: 0:01 min:sec
LCpeak >135dB: 0:00 min:sec
LCpeak >140dB: 0:00 min:sec
LAF90: 40,3 dB
LAF95: 40,0 dB
LAF99: 39,7 dB
Figure 2.10: Example txt-Export Results
Figure 2.11: Example csv-Export
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2.4 Measure
2.4 Measure
For legally binding measurements the device must run on batteries/rechargeables. Therefore the device
has to be controlled with the keypad (section 1.3.1). Follow the instructions below to perform a binding
measurement:
1. Position the device (held in the hand or mounted upon a tripod).
2. Switch on the device.
3. Check the battery charge status.
4. Use the Record-Button to enable/disable data recording.
5. Press the Start-Button to start the measurement.
6. Press the Stop-Button to stop the measurement.
2.4.1 Measure low sound levels
You do not have to make special preparations for measuring low level sounds.
2.4.2 Overload and Underrange
Overload and underrange are displayed, when the linearity range is left. The representation on the display
is explained in the following table 2.4.
Tango-Utilities Display Description
No overload has occured in current measurement.
Overload has occured in current measurement.
Currently an overload occurs.
No underrange has occured in current measurement.
Underrange has occured in current measurement.
Currently an underrange occurs.
Table 2.4: Display of overload and underrange
NOTICE! A reset of the overload or underrange display is only possible by stopping
and restarting the measurement.
2.5 Calibrate
A list of the approved calibrators and the accuracy classes achieved is given in section 5. Follow the instructions below to calibrate the device at 1 kHz:
2.5.1 Calibrate using Tango-Utilities
1. Connect Tango_Plus to the PC.
2. Start Tango-Utilities.
3. Insert the microphone into the calibrator and activate the calibration signal. The reference calibration
level is 94 dB for this methode.
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2 APPLIANCE
4. Press the
CAL
button in Tango-Utilities. “Calibration activated” appears in the status bar. To cancel
the calibration procedure, press the stop button.
5. Having finished you are asked to adopt the new calibration values. If something went wrong, an error
message appears.
2.5.2 Calibrate Tango_Plus directly
1. Switch on the device.
2. Press the Setup-Button and navigate to the calibration menu.
3. Adjust the calibration level and execute “Start Calibration”. The reference calibration level will be
blinking on the display (e.g. 94 dB). You may adjust this value with the Scroll-Button (94 dB, 104 dB
or 114 dB).
4. Switch on the calibrator (select the correspondig level on the calibrator, if necessary) and insert the
microphone into the calibrator.
5. Press the OK-Button and Calibration starts. First, the noise level of the device is measured and second
the calibrator signal. During calibration, is blinking on the display. When stops blinking, the
calibration is finished. The measured level is displayed enabling you to check the calibration result.
6. Press the OK-Button to save the new sensitivity value or press the Setup-Button to reject.
7. You have left the calibration menu and the device is in STOP-Mode.
If the calibration has been affirmed the symbol is shown on the display until the next start of Tango_Plus.
NOTICE! If the new value deviates more than 3 dB from the old one, it is not ac-
cepted. The message “Error” is displayed in this case.
Figure 2.12: Calibration menu
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3 Testing information
3.1 Acoustic test
3.1.1 Microphone alignment for measuring according to IEC 61672-1:2003.
To measure the influence of mechanical vibrations you need a second sound level meter with officially verified
calibration as reference device. The microphone of the reference device has to be positioned in a maximum
distance of 0.2 m from the microphone of the tested device and must not be exposed to the mechanical
vibrations of the exciter.
Figure 3.1: Alignment for vibration test
3.2 Electrical test
For eletrical testing use the equivalent electrical impedance device K65 only (section 5) (manufacturer specifications: 22 pF ±12% with a parallel resistance of 81 MΩ ±12%).
3.2.1 EMC test
The measurement is performed for the following configurations:
Low interference immunity: USB cable linked to public power supply and microphone extension cable
connected
Maximim interference immunity: USB cable and microphone extension cable disconnected
3.2.2 Level linearity
The starting values for the level linearity tests are listed in the last column of table 4.3.
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4 TECHNICAL SPECIFICATIONS
4 Technical specifications
Property Value
Software Tango-Utilities
Number of channels 1
Accuracy Class 1 according to IEC 61672-1:2003
Display of measured values Colour TFT 320 x 240
Frequency weighting A, C (simultaneously), no optional frequency weightings
Time weighting Fast, Slow, Peak (simultaneously)
Data storage Yes
Self-generated noise ≤19 dB(A)
Max. Sound Pressure Level see table 4.6
Linearity range 25. . .140 dB(A) (at 1 kHz)
Nominal measuring range for L
Max. electr. measuring range ± 2 V
Max. input voltage at
the input of the feeding device
U
at input ± 2,5 V
max
Integration response immediate
Time weighting F Rise or decay time constant = 0.125 s
Time weighting S Rise or decay time constant = 1 s
Time weighting Peak Rise time constant = 20 µs
Shortest integration time 16 ms
Longest integration time 194 days (100 h running on rechargeables)
Interfaces USB 2.0, serial printer port
Stabilizing time after switch-on 1 min
Warm-up time 1 min
Calibration frequency 1 kHz
Max. time of day drift max. 1.73 s in 24 h
Battery 2 x AA, 40 operation hours
External power supply via USB (see accessories)
Dimensions 266 mm x 76 mm x 38 mm
Weight 320 g (batteries inserted)
Reference conditions
Reference direction Along the microphone axis
Reference sound pressure level 94 dB
Reference frequency 1 kHz
Reference measuring range 25. . .140 dB(A)
Reference air temperature 23◦C
Reference air pressure 101.325 kPa
Reference relative humidity 50 %
Table 4.1: Technical data Tango_Plus
Cpeak
37. . .140 dB(C)
± 2,5 V
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4.1 Level linearity range
4.1 Level linearity range
The following table 4.2 contains the measurement ranges for A-weighted sound levels and the C-weighted
peak sound level for microphone sensitivity of 50 mV/Pa.
Fast/Slow/Leq in dB(A) LAEin dB(A) L
25. . .140 ab 30 37. . .140
Table 4.2: Level linearity ranges for A-weighted sound levels and C peak
Cpeak
in dB(C)
4.2 Linear operating ranges
The operating ranges given below are only valid for calibrated devices! The last columns show the starting
values for the level linearity tests.
f max in dB(A) min in dB(A) Range in dB(A) Starting values
16 Hz 84 30 54 74
31,5 Hz 100 30 70 84
1 kHz 139 25 114 94
4 kHz 140 30 110 94
8 kHz 139 30 109 94
12,5 kHz 135 30 105 94
Table 4.3: Linear operating ranges A-weighted (f is the frequency of the sine signal) and starting values for the level linearity tests.
f max in dB(C) min in dB(C) Range in dB(C) Starting values
16 Hz 126 41 85 94
31,5 Hz 137 42 95 94
1 kHz 139 39 100 94
4 kHz 139 38 101 94
8 kHz 137 39 98 94
12,5 kHz 133 38 95 94
Table 4.4: Linear operating ranges C-weighted (f is the frequency of the sine signal) and starting values for the level linearity tests.
4.3 Self-generated noise
The self-generated electrical noise of the device including preamplifier (measured with equivalent capacitance and 50Ω at the input) amounts to approx. 16 dB(A) on the display. The acoustic noise is 16 dB. This
is a total noise level of 19 dB. The highest noise level may be expected when externally powered.
4.3.1 Measurement of low noise levels
For the measurement of low noise levels not special preparation is required.
ATTENTION! Legally binding measurements must not be performed, if the device is con-
nected to public power supply.
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4.4 Frequency weighting
4 TECHNICAL SPECIFICATIONS
f A Tango_Plus C Tango_Plus A Standard C Standard Diff A Diff C
10 -67,93 -13,76 -70,00 -14,30 2,07 0,54
12,5 -62,56 -10,84 -63,40 -11,20 0,84 0,36
16 -55,90 -8,12 -56,70 -8,50 0,80 0,38
20 -50,00 -5,94 -50,50 -6,20 0,50 0,26
25 -44,54 -4,20 -44,70 -4,40 0,16 0,20
31,5 -39,36 -2,90 -39,40 -3,00 0,04 0,10
40 -34,36 -1,88 -34,60 -2,00 0,24 0,12
50 -30,14 -1,22 -30,20 -1,30 0,06 0,08
63 -26,12 -0,78 -26,20 -0,80 0,08 0,02
80 -22,32 -0,46 -22,50 -0,50 0,18 0,04
100 -19,06 -0,28 -19,10 -0,30 0,04 0,02
125 -16,12 -0,18 -16,10 -0,20 -0,02 0,02
160 -13,22 -0,10 -13,40 -0,10 0,18 0,00
200 -10,82 -0,06 -10,90 0,00 0,08 -0,06
250 -8,66 -0,04 -8,60 0,00 -0,06 -0,04
315 -6,62 0,00 -6,60 0,00 -0,02 0,00
400 -4,74 0,00 -4,80 0,00 0,06 0,00
Table 4.5: A- and C-weighted frequency response
f A Tango_Plus C Tango_Plus A Standard C Standard Diff A Diff C
500 -3,22 0,00 -3,20 0,00 -0,02 0,00
630 -1,92 0,00 -1,90 0,00 -0,02 0,00
800 -0,78 0,00 -0,80 0,00 0,02 0,00
1000 0,00 0,00 0,00 0,00 0,00 0,00
1250 0,58 -0,06 0,60 0,00 -0,02 -0,06
1600 0,98 -0,06 1,00 -0,10 -0,02 0,04
2000 1,20 -0,18 1,20 -0,20 0,00 0,02
2500 1,28 -0,28 1,30 -0,30 -0,02 0,02
3150 1,26 -0,40 1,20 -0,50 0,06 0,10
4000 1,10 -0,68 1,00 -0,80 0,10 0,12
5000 0,78 -1,06 0,50 -1,30 0,28 0,24
6300 0,20 -1,64 -0,10 -2,00 0,30 0,36
8000 -0,60 -2,46 -1,10 -3,00 0,50 0,54
10000 -1,74 -3,62 -2,50 -4,40 0,76 0,78
12500 -3,30 -5,14 -4,30 -6,20 1,00 1,06
16000 -5,48 -7,32 -6,60 -8,50 1,12 1,18
20000 -7,90 -9,74 -9,30 -11,20 1,40 1,46
Figure 4.1: A-weighted frequency response
Figure 4.2: C-weighted frequency response
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4.5 Microphone
4.5 Microphone
Only the original microphone capsule MK255 by MICROTECH GEFELL is approved for measurements with
Tango_Plus. The directional characteristics of the microphone correspond to the limits specified in IEC
61672-1:2003. The effect of the windscreen on the directional characteristics of the microphone is negligible.
As a result all corresponding correction values are specified with pm0.1 dB. The acoustic center point and
microphone reference point are located at the middle of the microphone membrane.
Property Value
Model Transducer type Capacitive pressure transducer
Polarization backelectret
Frequency range free-field 3.5 Hz . . .20 kHz (±2 dB)
Sensitivity ca. 50 mV/Pa
Max. SPL for 3 % , distortion at 1 kHz 146 dB
Self-generated noise with preamplifier 15 dBA
Capacitance 17 pF
Operating temperature range -50 . . .+100◦C
Ambient temperature coefficient leq0.01 dB/◦C
Ambient pressure coefficient -0.01 dB/kPa
Diameter 1/2”
with protection lid 13,2 ± 0,02 mm
without protection lid 12,7 ± 0,02 mm
Length 16,4 mm
Weight 7,5 g
Thread for preamplifier 11,7 mm 60 UNS
Thread for protection 12,7 mm 60 UNS
Table 4.6: Technical data MK255
4.5.1 Random incidence and free-field correction
f Freifeldkorr. Diffusfeldkorr.
in Hz in dB in dB
25 0 0
31.5 0 0
40 0 0
50 0 0
63 0 0
80 0 0
100 0 0
125 0 0
160 0 0
200 0 0
250 0 0
315 0 0
400 0 0
500 0 0
630 0 0
Table 4.7: Free-field and random incidence corrections (manufacturer’s specification: measurement uncertainty at 95% certainty ±0.6 dB)
f Freifeldkorr. Diffusfeldkorr.
in Hz in dB in dB
0.8 k 0 0
1 k 0 0
1.25 k -0.03 0
1.6 k 0.03 0
2 k 0.21 -0.1
2.5 k 0.36 -0.1
3.2 k 0.56 0
4 k 0.88 0.1
5 k 1.36 0.2
6.3 k 2.01 0.4
8 k 2.99 0.7
10 k 4.25 0.9
12.5 k 6.14 1.8
16 k 8.77 3.4
20 k 9.9 3.2
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4 TECHNICAL SPECIFICATIONS
4.6 Details on EMC
When the device is exposed to electromagnetic emissions the lower limits of the ranges in table 4.2 are
increased by 5 dB. Within these changed ranges the error limits according to IEC 61672-1:2003 are maintained. The level linearity range changes to 40. . . 107 dB(A) when the device is exposed to electromagnetic
emissions. There will be no performance loss in the device after electrostatic discharges (touch discharge
up tp 4 kV and air discharge up to 8 kV).
4.6.1 Directional characteristics
Figure 4.3: Mikrofonachse
4.6.2 Frequency response of the microphone
4
MK255 Tolerance
2
0
−2
Amplitude / dB
−4
10 100 1k 10k
f / Hz
4.7 Effect of environmental conditions
In order to avoid the effect of sound reflections from the body of the operator interfering with the measurement, Tango_Plus should be located as far as possible from the body. Thus, when actually performing the
measurement, the operator should place himself at a distance behind the tripod-mounted meter, or extend
the hand-held meter as far from the body as is comfortable.
NOTICE! When the temperature changes by more than 15
of 30 min must be safeguarded.
◦
C an acclimatization time
4.7.1 Mains frequency and high-frequency fields
Tango_Plus complies with IEC 61672-1:2003 with respect to interference immunity to mains frequency and
high-frequency fields. The interference immunity to mains frequency and high-frequency fields is highest
when the device is running on batteries/rechargeables without USB cable connected.
If Tango_Plus is connected to a PC and measuring high-frequency emissions are highest. Additionally, the
interference immunity to mains frequency and high-frequency fields is lowest in this configuration (alignment
see fig. 4.4). The next lowest emission level is reached in the same configuration, but in STOP-Mode.
In compliance with paragraph 6.6.9 of IEC 61672-1:2003 Tango_Plus is not appropriate to measure levels
lower than 74 dB for an electric field strength exceeding 10 V/m.
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4.8 Connection assembly of the detachable microphone
Figure 4.4: Alignment measurement HF immunity
4.7.2 Effect of mechanical vibration
If the device is exposed to mechanical vibration with an acceleration of 1 m/s2perpendicular to the membrane plane of the microphone, the lower limit of the linear operating range increases to 75 dB for the
frequencies 31,5 Hz, 63 Hz, 125 Hz, 250 Hz, 500 Hz, 630 Hz, 800 Hz and 1000 Hz, frequency weighting A.
If the device is exposed to mechanical vibration with an acceleration of 1 m/s2parallel to the membrane
plane of the microphone, the lower limit of the linear operating range increases to 58 dB for the frequencies
31,5 Hz, 63 Hz, 125 Hz, 250 Hz, 500 Hz, 630 Hz, 800 Hz and 1000 Hz, frequency weighting A.
4.8 Connection assembly of the detachable microphone
ATTENTION! The detachable microphone must be used only with Tango_Plus! Other-
wise it may be damaged.
The microphone of Tango_Plus is detachable and connected to the analyser via LEMO
FGG.1B.307. The pin assignment is shown in
figure 4.5.
Figure 4.5: Pin assignment for the detachable microphone
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5 ACCESSORIES
5 Accessories
Tango_Plus achieves accuracy class 1 of IEC 61672-1:2003 in all possible device-accessories-alignments
without the necessity of applying any correction values.
Accessory Manufacturer Item number
Cal200 PCB, 1 kHz, 94 dB or 114 dB 800934.4
Type 4231 B&K, 1 kHz, 94 dB bzw. 114 dB 800043.2
Windscreen W2 MICROTECH Gefell 800253.0
USB cable A-Bmini 5 Pol 1.8 m SINUS Messtechnik GmbH 801038.7
USB power supply adaptor SINUS Messtechnik GmbH 601092.6
Equivalent electrical impedance K65 MICROTECH Gefell 800030.3
Table 5.1: Available accessories for Tango_Plus
The Windscreen W2 is black coloured and spherically with a diameter of 69 mm.
5.1 Technical specifications of the calibrators
Feature Value
Standards IEC 60942:2003 and
ANSI S1.40-1984, Class 1
Sound pressure level 94 dB, 114 dB ±0.1 dB
Supported microphone types 1/2”, 1/4”, 3/8”
Weight 156 g
Sound pressure stability <0.1 dB
Surrounding conditions each for ±0.3 dB tolerance
Static pressure 65 kPa . . . 108 kPa
Humidity 10% . . .90% RH
Temperature -10◦C . . .+ 50◦C
Table 5.2: Technical specifications Cal200
Feature Value
Standard IEC 60942:2003, Klasse 1
Sound pressure level 94 dB, 114 dB ±0.2 dB
Supported microphone types 1”,1/2”
Weight approx. 150 g
Sound pressure stability <0.05 dB
Surrounding conditions
Static pressure 65 kPa .. . 108 kPa
Humidity 10 % . . .90 %RH
Temperature -10◦C . . .+ 50◦C
Table 5.3: Technical specifications Type 4231
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6 Declaration of Conformity
# 01000
We, SINUS Messtechnik GmbH, Foepplstrasse 13, 04347 Leipzig, Germany, declare that the product
Sound Level Meter Tango_Plus
Part Number: 907004.2
Serial Number:
to which this CE-declaration relates, is in conformity with the following standards and other documents:
Technical Parameters Sound Level Meter: IEC 61672 or DIN EN 61672 class 1
DIN 45657
Third-octave analyzer: IEC 61260 (09/2001) class 1
Electromagnetic Compatibiliy: Emission IEC 61000.6.3 or DIN EN 61000-6-3
IEC 61672 or DIN EN 61672
Immunity IEC 61000.6.2 or DIN EN 61000-6-2
IEC 61326 or DIN EN 61326
IEC 61672 or DIN EN 61672
Safety IEC 61010.1 or DIN EN 61010-1
The measuring system is intended for use with measuring microphones according to IEC 1094-1. This product has been manufactured and tested in compliance with the following binding internal documentation from
SINUS Messtechnik GmbH:
Manufacturing and Testing documents: - Quality assurance manual
- Manufacturing documents for Tango_Plus
- Testing rules for Tango_Plus
This product was tested and found to comply with all specifications.
Gunther Papsdorf
Managing Director
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Page 30
Index
INDEX
C
Calibrate. .. . . .. . . .. . . . .. . . .. . . .. . . . .. . . .. . . .. . . . .19
Calibrator . .. . . . .. . . .. . . .. . . . .. . . .. . . .. . . . .. . . .. . . 28
Configuration . . . . .. . . .. . . . . . . . .. . . .. . . .. . . . .. . . .. 12
D
Directional characteristics . .. . . . .. . . .. . . .. . . . .. . . .26
E
EMC. . . . .. . . .. . . .. . . . .. . . .. . . .. . . . . . . . .. . . .. . . . . . 26
Environmental conditions .. . . .. . . .. . . . .. . . .. . . .. . 26
Export .. . . .. . . . .. . . .. . . .. . . . . . . . .. . . .. . . . . . . . .. . . 17
Export directory. . .. . . .. . . . . . . . .. . . .. . . . . . . . .. . . ..14
F
First use . . . .. . . .. . . .. . . . .. . . .. . . .. . . . . . . . .. . . .. . . 10
Frequency weighting. .. . . .. . . .. . . . . . . . .. . . .. . . . . . 24
H
Help . . .. . . . .. . . .. . . .. . . . .. . . .. . . .. . . . .. . . .. . . .. . . 14
I
Info . .. . . . .. . . .. . . .. . . . . . . . .. . . .. . . . . . . . .. . . .. . . . . 14
L
Level linearity range .. . . .. . . .. . . . .. . . .. . . .. . . . .. . 23
M
Measure . .. . . . . . . . .. . . .. . . .. . . . .. . . .. . . .. . . . .. . . .19
low noise levels . . .. . . .. . . . .. . . .. . . .. . . . . . . . . 23
low sound levels . . .. . . .. . . .. . . . .. . . .. . . .. . . . 19
O
Operating range .. . . .. . . . . . . . .. . . .. . . . . . . . .. . . .. . 23
P
Power supply . . . .. . . . .. . . .. . . .. . . . .. . . .. . . .. . . . .. . 7
R
Reference conditions . . . . .. . . .. . . . . . . . .. . . .. . . . . . 22
S
Self-generated noise. . . .. . . . . . . . .. . . .. . . . . . . . .. . . 23
Software installation . . . .. . . .. . . .. . . . . . . . .. . . .. . . . 10
Sound level values . . . .. . . .. . . .. . . . .. . . .. . . .. . . 6, 11
Sound levels
low. . . . .. . . .. . . .. . . . .. . . .. . . .. . . . .. . . .. . . .. . . 19
Storage Requirement . . .. . . .. . . . .. . . .. . . .. . . . .. . . 13
T
Testing information .. . . .. . . .. . . . .. . . .. . . .. . . . .. . . .21
acoustic test . .. . . .. . . .. . . . .. . . .. . . .. . . . .. . . . 21
electrical test . .. . . . . . . . .. . . .. . . .. . . . .. . . .. . . .21
EMC test. . . .. . . .. . . . .. . . .. . . .. . . . . . . . .. . . .. .21
level linearity . .. . . . . . . . .. . . .. . . .. . . . .. . . .. . . .21
Type approval
admitted accessories . . .. . . . .. . . .. . . .. . . . . . . . .6
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