Svantek SV 973 User manual

USER MANUAL
SV 973
CLASS 2
SOUND LEVEL METER
& SOUND EXPOSURE
METER
Warsaw, 2020-12-18
Rev. 1.01
Copyright © 2020 SVANTEK.
All rights reserved.

SVAN 973 User Manual
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Note: On account of continuous product improvement SVANTEK reserves the right to make
changes to product specifications without notice. To download the most upto date user'smanual please
visit our web site at www.svantek.com.
This user’s manual presents the firmware revision named 1.04.x (see the Unit Label review to check
version details).
The succeeding software revisions (marked with the higher numbers) can change the view of some
displays presented in the text of the manual.
WEEE Note: Do not throw the device away with the unsorted municipal waste at the end of its
life. Instead, hand it in at an official collection point for recycling. By doing this you will help to preserve
the environment.
The software described in this manual is furnished under a license agreement and may be used only in
accordance with the terms of that agreement.
Copyright Notice
Copyright © 2020 Svantek Sp. z o.o.
All rights reserved.
Reproduction without permission is prohibited.
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Trademarks or registered marks in this manual belong to their respective manufacturers.
Microsoft and Windows are registered trademarks of Microsoft Corporation.
The Bluetooth®word mark and logos are registered trademarks owned by Bluetooth SIG, Inc.
Disclaimer
Information in this document is subject to change without notice and does not represent a commitment
on the part of Svantek.
Svantek provides this document “as is”, without warranty of any kind, either expressed or implied,
including, but not limited to, its particular purpose. Svantek reserves the right to make improvements
and/or changes to this manual, or to the products and/or the programs described in this manual, at
any time.
Information provided in this manual is intended to be accurate and reliable. However, Svantek assumes
no responsibility for its use, or for any infringements on the rights of third parties that may result from
its use.
This product might include unintentional technical or typographical errors. Changes are periodically
made to the information herein to correct such errors, and these changes are incorporated into new
editions of the publication.
Technical Support Contact Information:
web: www.svantek.com
e-mail: [e-mail]

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CONTENTS
INDEX............................................................................................................................................................... 8
1INTRODUCTION ...................................................................................................................................... 11
1.1 SV 973 AS SOUND LEVEL METER /SOUND EXPOSURE METER /ANALYSER ........................................................ 11
1.2 GENERAL FEATURES OF SV 973 ............................................................................................................... 12
1.3 ACCESSORIES INCLUDED ......................................................................................................................... 12
1.4 ACCESSORIES AVAILABLE ........................................................................................................................ 13
1.5 FIRMWARE OPTIONS AVAILABLE ............................................................................................................... 13
2GENERAL INFORMATION ........................................................................................................................ 14
2.1 INSTRUMENT CONFIGURATIONS ............................................................................................................... 14
2.1 INPUT AND OUTPUT SOCKETS OF THE INSTRUMENT........................................................................................ 14
2.2 INSTRUMENT POWER............................................................................................................................. 15
2.3 CONTROL KEYS ON THE FRONT PANEL......................................................................................................... 15
2.4 WORKING WITH INSTRUMENT ................................................................................................................. 17
2.4.1 Measurement mode................................................................................................................. 17
2.4.2 Configuration mode ................................................................................................................. 18
2.5 GETTING STARTED ................................................................................................................................ 20
2.6 DESCRIPTION OF ICONS .......................................................................................................................... 21
2.7 OVERLOAD AND UNDERRANGE DETECTION .................................................................................................. 23
2.8 SAVING DATA ...................................................................................................................................... 23
2.9 DOWNLOADING AND UPLOADING FILES ...................................................................................................... 25
2.10 ACTIVATING OPTIONAL FUNCTIONS ........................................................................................................... 25
3MEASUREMENT FUNCTIONS AND CALIBRATION –FUNCTION ................................................................ 26
3.1 ACTIVATING MEASUREMENT FUNCTIONS –MEASUREMENT FUNCTION .............................................................. 26
3.2 INSTRUMENT’S CALIBRATION –CALIBRATION............................................................................................... 26
3.2.1 Calibration –By Measurement ................................................................................................. 27
3.2.1 Last calibration record –Last Calibration .................................................................................. 28
3.2.2 History of calibrations –Calibration History .............................................................................. 29
3.2.3 Erasing calibration records –Clear History................................................................................ 29
3.2.4 Post measurement calibration –Post Calibration...................................................................... 29
3.2.5 Automatic calibration –Auto Calibration .................................................................................. 29
4CONFIGURING MEASUREMENT PARAMETERS –MEASUREMENT ........................................................... 31
4.1 SETTING GENERAL MEASUREMENT PARAMETERS –GENERAL SETTINGS............................................................... 31
4.2 SETTING MEASUREMENT TRIGGER –MEASUREMENT TRIGGER ......................................................................... 33
4.3 SETTING PARAMETERS FOR PROFILES –PROFILES .......................................................................................... 35
4.4 SETTING ALARM THRESHOLDS FOR DOSE METER –ALARM ............................................................................... 35
4.5 CONFIGURING DATA LOGGING –LOGGING .................................................................................................. 35
4.5.1 Setting general logging parameters –Logger Setup.................................................................. 36

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4.5.2 Selecting results for logging –Logger Results............................................................................ 38
4.5.3 Configuring Logger trigger –Logger Trigger ............................................................................. 38
4.5.4 Configuring signal recording –Wave Recording ........................................................................ 39
4.6 MEASUREMENT RANGE –RANGE ............................................................................................................. 42
4.7 SWITCHING ON COMPENSATION FILTERS –COMPENSATION FILTER ................................................................... 42
4.8 SETTING STATISTICAL LEVELS –STATISTICAL LEVELS ....................................................................................... 43
4.9 PROGRAMMING INSTRUMENT’S INTERNAL TIMER –TIMER .............................................................................. 43
4.9.1 Example of timer execution ...................................................................................................... 44
5CONFIGURING DATA VIEWING –DISPLAY............................................................................................... 45
5.1 ENABLING VIEWS –DISPLAY MODES ......................................................................................................... 45
5.1.1 One Result view........................................................................................................................ 45
5.1.2 Three profiles view ................................................................................................................... 46
5.1.3 Logger view.............................................................................................................................. 47
5.1.4 Statistics view .......................................................................................................................... 47
5.1.5 Running SPL view ..................................................................................................................... 48
5.1.6 File information view................................................................................................................ 48
5.2 ADJUSTING PLOT SCALE –DISPLAY SCALE ................................................................................................... 48
5.3 SELECTING MEASUREMENT RESULTS FOR PRESENTATION –MEASUREMENT RESULTS ............................................. 49
5.4 CHOOSING LOGGER RESULTS FOR PRESENTATION –LOGGER RESULTS................................................................ 49
5.5 CONFIGURING POWER SAVER –SCREEN SETUP ............................................................................................ 49
6MANAGING FILES –FILE.......................................................................................................................... 51
6.1 MANAGING INSTRUMENT’S FILES –FILE MANAGER....................................................................................... 51
6.1.1 Assigning directory for data files saving –Working Directory .................................................... 52
6.1.2 Renaming file/directory –Rename............................................................................................ 52
6.1.3 Information about file/directory –Info ..................................................................................... 52
6.1.4 Deleting file/directory –Delete................................................................................................. 53
6.1.5 Erasing memory –Erase Disk.................................................................................................... 53
6.2 MANAGING SETUP FILES –SETUP MANAGER ............................................................................................... 53
7CONFIGURING INSTRUMENT –INSTRUMENT ......................................................................................... 54
7.1 CHOOSING USER INTERFACE MODE –USER INTERFACE ................................................................................... 54
7.2 CHECKING POWER –BATTERY.................................................................................................................. 54
7.3 PROGRAMMING KEYBOARD FUNCTIONS –KEYBOARD .................................................................................... 55
7.4 AUTOMATIC POWER OFF SETTING –POWER OFF .......................................................................................... 55
7.5 CONFIGURING USB INTERFACE –USB....................................................................................................... 56
7.6 SWITCHING BLUETOOTH –BLUETOOTH...................................................................................................... 56
7.7 CONFIGURING SERIAL INTERFACE –RS232 ................................................................................................. 56
7.8 PROGRAMMING INTERNAL REAL TIME CLOCK –RTC..................................................................................... 56
7.9 CHECKING INSTRUMENT PROPERTIES –UNIT LABEL ....................................................................................... 57

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8AUXILIARY SETTINGS –AUXILIARY SETUP ............................................................................................... 58
8.1 SELECTING USER INTERFACE LANGUAGE –LANGUAGE .................................................................................... 58
8.2 RESTORING FACTORY SETTINGS –FACTORY SETTINGS .................................................................................... 58
8.3 VOICE COMMENTS –COMMENTS ............................................................................................................. 59
8.4 DISPLAYING LEQ & LAV RESULTS –LEQ & LAV ............................................................................................ 59
8.5 ACTIVATING WARNINGS –WARNINGS ....................................................................................................... 59
9PRINTING REPORTS –REPORT ................................................................................................................ 61
9.1 PRINTING MEASUREMENT RESULTS –PRINT ................................................................................................ 61
9.2 SELECTING PRINTING OPTIONS –OPTIONS .................................................................................................. 63
9.3 SELECTING RESULTS FOR THE REPORT –RESULTS........................................................................................... 63
9.4 SELECTING STATISTICS FOR THE REPORT –STATISTICS ..................................................................................... 63
9.5 SELECTING SPECTRA FOR THE REPORT –SPECTRUM ....................................................................................... 64
9.6 PRINTER SETTINGS –PRINTER .................................................................................................................. 64
10 1/1-OCTAVE AND 1/3-OCTAVE ANALYSER .......................................................................................... 65
10.1 SELECTING 1/1 OCTAVE OR 1/3 OCTAVE FUNCTION ..................................................................................... 65
10.2 CONFIGURING 1/1- OR 1/3-OCTAVE ANALYSER ........................................................................................... 65
10.2.1 General measurement settings for 1/1- or 1/3-octave analysis –General Settings..................... 65
10.2.2 Logging 1/1- or 1/3-octave spectra –Logging........................................................................... 66
10.2.3 Setting parameters of 1/1- or 1/3-octave analysis –Spectrum .................................................. 66
10.3 CONFIGURING 1/1- OR 1/3-OCTAVE SPECTRA VIEWS .................................................................................... 66
10.3.1 Presentation of 1/1- or 1/3-octave spectra ............................................................................... 67
10.3.2 Adjusting spectrum plot scale –Display Scale ........................................................................... 68
10.3.3 Selection of spectra to be viewed –Spectrum View ................................................................... 68
11 DOSIMETER......................................................................................................................................... 69
11.1 SELECTING DOSIMETER FUNCTION ............................................................................................................ 69
11.2 SETTING GENERAL PARAMETERS –GENERAL SETTINGS ................................................................................... 69
11.3 SETTING PROFILE PARAMETERS –PROFILE X................................................................................................ 69
11.4 CHECKING MEASUREMENT RANGE –RANGE ................................................................................................ 70
11.5 SETTING EXPOSURE TIME –EXPOSURE TIME................................................................................................ 70
11.6 SETTING ALARM THRESHOLDS FOR DOSE METER RESULTS –ALARM.................................................................... 70
11.7 LOGGING TIME-HISTORY RESULTS –LOGGER RESULTS .................................................................................... 71
11.8 DISPLAYING DOSIMETER RESULTS ............................................................................................................. 71
11.8.1 Displaying of Leq & Lav results –Leq & Lav............................................................................... 71
12 REVERBERATION TIME MEASUREMENTS –RT60................................................................................. 72
12.1 SELECTING RT60 FUNCTION.................................................................................................................... 72
12.2 SETTING RT60 PARAMETERS –RT60 SETTINGS ........................................................................................... 72
12.3 STARTING RT60 MEASUREMENTS............................................................................................................. 74
12.1 VIEWING RT60 RESULTS ........................................................................................................................ 75

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12.1 AVERAGING RT60 RESULTS..................................................................................................................... 75
13 MAINTENANCE ................................................................................................................................... 76
13.1 BATTERIES REPLACEMENT ....................................................................................................................... 76
13.2 DISCONNECTING MICROPHONE ................................................................................................................ 76
13.3 RESETTING THE INSTRUMENT................................................................................................................... 76
13.4 FIRMWARE UPGRADE ............................................................................................................................ 77
13.5 PRESERVATION OF INTERNAL BATTERIES ..................................................................................................... 77
13.6 TRANSPORTATION AND STORAGE .............................................................................................................. 77
13.7 CLEANING .......................................................................................................................................... 77
13.8 TROUBLESHOOTING .............................................................................................................................. 78
14 GLOSSARY........................................................................................................................................... 79
14.1 MODES AND MEASUREMENT FUNCTIONS................................................................................................... 79
14.2 CALIBRATION ...................................................................................................................................... 80
14.3 DEFINITIONS OF MEASURED RESULTS ......................................................................................................... 81
14.4 MEASUREMENT PARAMETERS.................................................................................................................. 85
14.5 DISPLAY PARAMETERS............................................................................................................................ 97
14.6 INSTRUMENT PARAMETERS ................................................................................................................... 100
14.7 AUXILIARY PARAMETERS....................................................................................................................... 102
APPENDIX A. REMOTE CONTROL.................................................................................................................. 104
A.1 INPUT/OUTPUT TRANSMISSION TYPES ..................................................................................................... 104
A.2 FUNCTION #1 –INPUT/OUTPUT OF THE CONTROL SETTING CODES.................................................................. 104
A.3 FUNCTION #2 –MEASUREMENT RESULTS READ-OUT IN THE SLM MODE .......................................................... 106
A.4 FUNCTION #3 –READ-OUT OF MEASUREMENT RESULTS IN 1/1 OCTAVE AND 1/3 OCTAVE MODE.......................... 109
A.5 FUNCTION #4 –READ-OUT OF THE DATA FILE FROM THE INTERNAL FLASH-DISK OR RAM MEMORY......................... 109
A.6 FUNCTION #D –READ /WRITE THE DATA FILES FROM THE EXTERNAL MEMORY (SD-CARD) .................................. 110
A.7 FUNCTION #5 –STATISTICAL ANALYSIS RESULTS READ-OUT ........................................................................... 112
A.8 FUNCTION #7 –SPECIAL CONTROL FUNCTIONS .......................................................................................... 113
A.9 FUNCTION #9 –WRITE-IN THE DATA FILE INTO THE INTERNAL FLASH-DISC ......................................................... 117
A.10 CONTROL SETTING CODES ..................................................................................................................... 117
APPENDIX B. DATA FILE STRUCTURES........................................................................................................... 122
B.1 GENERAL STRUCTURE OF THE SV 973 FILES .............................................................................................. 122
B.2 STRUCTURE OF THE FILE CONTAINING RESULTS FROM LOGGER’S FILE ................................................................ 141
B.2.1. The contents of the files in the logger........................................................................................... 142
B.2.1.1. Record with the results.......................................................................................................................... 142
B.2.1.2. Record with the state of the markers ..................................................................................................... 143
B.2.1.3. Record with the breaks in the results registration................................................................................... 143
B.2.1.4. Record with the breaks account PAUSE in the results registration........................................................... 143
B.2.1.5. Record with the wave file name............................................................................................................. 143
B.2.1.6. Record with Summary Results................................................................................................................ 144

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B.2.1.7 Record with audio data........................................................................................................................... 144
B.2.1.8. Record with name of the comment file .................................................................................................. 145
B.2.1.9. Record with GPS data ............................................................................................................................ 146
B.3 STRUCTURE OF THE SETUP FILE ............................................................................................................. 147
B.4 DATE AND TIME ................................................................................................................................. 147
APPENDIX C. TECHNICAL SPECIFICATIONS .................................................................................................... 148
C.1 SPECIFICATION OF SV 973 AS SOUND LEVEL METER IN THE STANDARD CONFIGURATION ...................................... 148
C.2 SPECIFICATION OF SV 973 AS SOUND EXPOSURE METER (DOSIMETER)IN THE STANDARD CONFIGURATION .............. 163
C.3 EFFECT OF THE SA 22 WINDSCREEN ........................................................................................................ 178
C.4 SPECIFICATION OF SV 973 AS 1/1 OCTAVE AND 1/3 OCTAVE ANALYZER ......................................................... 181
C.5 FREQUENCY CHARACTERISTICS OF THE IMPLEMENTED DIGITAL FILTERS .............................................................. 190
C.6 MISCELLANEOUS SPECIFICATION OF SV 973 ............................................................................................. 193
C.7 DECLARATION OF CONFORMITY ............................................................................................................. 198
APPENDIX D. DEFINITIONS AND FORMULAE OF MEASURED VALUES...................................................... 199
D.1 BASIC TERMS AND DEFINITIONS .............................................................................................................. 199
D.2 DEFINITIONS AND FORMULAS OF THE SLM RESULTS .................................................................................... 200
D.3 DEFINITIONS AND FORMULAS OF THE ADDITIONAL DOSIMETER FUNCTION RESULTS.............................................. 203
D.4 DEFINITIONS AND FORMULAS OF THE ADDITIONAL RUNNING LEQ FUNCTION RESULTS.......................................... 204
D.5 STATISTICAL LEVELS –LN DEFINITION ....................................................................................................... 205
APPENDIX E. REVERBERATION TIME CALCULATIONS.................................................................................... 207
E.1. INTRODUCTION ....................................................................................................................................... 207
E.2. DEFINITIONS AND CALCULATION OF THE RT 60 REVERBERATION TIME................................................................... 208
E.3. DESCRIPTION OF THE DECAY CURVE RECORDING IN DIFFERENT MEASUREMENT METHODS ........................................... 210

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INDEX
1
1/1-octave · 26, 65
1/3-octave · 26, 65
3
3 Profiles view · 46
A
Accessories · 12
Advanced interface · 54
Alarm · 35, 70
Auto calibration · 29
Automatic pauses · 69
Autoscale · 49, 68
Auxiliary settings · 58
Averaged spectrum · 68
B
Battery · 54
Bluetooth · 56
C
Calibration · 26
Calibration by measurement · 27
Calibration factor · 27
Calibration history · 29
Calibration level · 27
Calibration result · 27
Compensation filter · 42
Complex parameter · 19
Configuration mode · 18
Control keys · 15
Criterion level · 70
D
Day time limits · 33
Decay · 72
Decay method · 74
Default settings · 21
Deleting files · 53
Detector · 35, 66, 70
Diffuse Field · 42
Directory · 52
Display colour · 50
Display mode · 17, 45, 66
Display scale · 48, 68
Display settings · 45
Dosimeter · 26, 69
Dosimeter results · 71
Downloading · 25
Dynamics · 48, 68
E
Erasing disk · 53
Exchange rate · 70
Exponential integration · 33
Exposure time · 70
F
Factory settings · 21, 58
File info view · 48
File information · 52
File manager · 23, 51
File name · 73
Files · 51
Filter · 35, 66, 69
Filter Peak · 35
Firmware options · 13
Firmware upgrade · 77
Free Field · 42
Function · 26
G
General settings · 31, 65, 69
Gradient · 42
Gradient threshold · 35
Gradient trigger · 34, 41
Grid · 49, 68
H
Help information · 20
I
Icons · 21
Impulse · 72
Impulse method · 74
Impulse response method · 72

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Inactive parameters · 20
Information screen · 20
Input/output · 14
Instantaneous spectrum · 68
Instrument settings · 54
Integration period · 32, 35, 65
Integration period trigger · 41
Interrupted noise method · 72
K
Key lock · 55
Keyboard · 15, 55
L
Language · 58
Last calibration · 28
Leq & Lav · 59, 71
LEQ integration · 33
Level · 73
Level meter · 26
Level threshold · 34
Level trigger · 33, 38, 40
Linear integration · 33
List of options · 19
List of parameters · 19
Logger · 36
Logger name · 37
Logger results · 38, 49, 66, 71
Logger setup · 36
Logger split · 37
Logger step · 35, 66
Logger trigger · 38
Logger view · 47
Logging · 35, 66
M
Main menu · 18
Maintenance · 76
Manual trigger · 41
Matrix of parameters · 19
Max spectrum · 68
Measurement function · 26, 65, 69, 72
Measurement mode · 17
Measurement settings · 31
Measurement trigger · 33
Measurement view · 17
Memory · 23
Menu position · 18
Microphone · 76
Microphone compensation · 42
Min spectrum · 68
N
New directory · 52
Noise margin · 73
O
One result view · 45
Opening position · 19
Optional functions · 25
P
Post-calibration · 29
Post-trigger · 39
Power Off · 55
Power saver · 49
Powering · 15, 76
Pre-trigger · 39, 42
Print options · 63
Print results · 61
Printed results · 63
Printed spectrum · 64
Printed statistics · 63
Printer settings · 64
Profiles · 35, 69
PTC threshold level · 70
R
Range · 42, 70
Recording · 39
Recording time · 42, 73
Renaming files · 52
Repetition cycles · 32, 35, 65
Report · 61
Resetting · 76
Results presentation · 17
Results view · 45, 66
RS232 · 56
RT averaging · 73
RT frequency range · 73
RT method · 73
RT octave · 73
RT step · 73
RT60 · 26, 72
RT60 averaging · 75
RT60 settings · 72
RTC · 56
Running SPL · 20
Running SPL view · 48
S
Saving files · 23
Screen dim · 49
Screen setup · 49
SD card · 23
Setup manager · 24, 53
Shift key mode · 55
Simple interface · 54

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SLM/Dosimeter results · 49
Slope trigger · 40
Sound analyser · 11
Sound exposure meter · 11
Sound level meter · 11
Spectrum · 67
Spectrum settings · 66
Spectrum view · 67
Start delay · 32
Start measurements · 20
Start synchronisation · 32
Start/Stop interface · 54
Statistical levels · 43
Statistics view · 47
Summary results · 35, 37, 66
T
Text editor · 19
Threshold level · 70
Timer · 43
Total value · 65
Trigger level · 39
Trigger source · 34, 39
Trigger step · 41
Troubleshooting · 78
Turn on · 20
U
ULT threshold level · 70
Unit label · 57
Uploading · 25
USB · 56
User interface · 18, 54
V
Viewed spectra · 68
Voice comments · 59
W
Warnings · 59
Wave recording · 39
Windscreen compensation · 42
Working directory · 52

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1 INTRODUCTION
SV 973 is an extremely small Class 2 IEC 61672-1:2013 Sound
Level Meter (SLM) with the real time 1/1 & 1/3 octave analyser
option and Sound Exposure Meter (SEM) conforming to
international standards ISO 9612 and OSHA (IEC 61252;
ANSI S1.25).
The unique feature of SV 973 is the microphone in MEMS
technology with a lifetime warranty.
The user interface of this instrument makes measurement
configuration as easy as possible. This all makes SV 973 an ideal
choice for industrial hygiene noise measurements, audiometric
tests, short period environmental noise measurements, acoustics
consultancy surveys,technical engineers dealing with noise issues
and general acoustics noise measurements.
SV 973 provides broad band results with all required frequency
weighting filters plus real time 1/1 octave & 1/3 octave spectra in
the audio range.
The instrument enables huge time history logging capability
providing broad band results and spectra with adjustable double
(long and short) logging steps. Audio recording on user selectable
trigger conditions complete the logging functionality. Data are
stored on 8GB built-in micro SD chip and can be easily
downloaded to a PC (with the provided SvanPC++ software) over
the USB-C or optional RS 232 interfaces.
Direct printing feature enables quick on-site printing with the use
of optional portable printer.
The instrument can be easily calibrated in the field using an
acoustic calibrator.
Thanks to a robust pocket size housing and Low Energy Long
Range Bluetooth®1Smart wireless interface, this instrument is an
excellent tool for anyone who deals with acoustic measurements.
The instrument works with Svantek’s dedicated health and safety software packages – Supervisor for
data downloading, visualization, basic post-processing and exporting to commonly used office software
applications and also with the full analysis package SvanPC++.
1.1 SV 973 AS SOUND LEVEL METER /SOUND EXPOSURE METER /ANALYSER
•SLM mode: Lpeak, Lmax, Lmin, L,Leq, LE, Lden, LEPd, Ltm3,Ltm5, Leq statistics (Ln),
expected Leq value (EX), standard Leq deviation (SD), measurement time and overload time %
(OVL) and two running Leq (LR15 and LR60) with Class 2 IEC 61672-1:2013 accuracy in the
frequency range 20 Hz ÷10 kHz and linear measurement range 32 dBA LEQ ÷ 128 dBA PEAK
•SEM mode: Lpeak, Lmax, Lmin, L, Leq, LE, LEPd, Ltm3,Ltm5, Leq statistics (Ln), Lc-a,
DOSE, D_8h, PrDOSE,LAV, SEL8(LAE8), PSEL(PLAE), E, E_8h, peak counter (PTC), peak
threshold (PTP), upper limit time (ULT), TWA, PrTWA, expected Leq value (EX), standard Leq
deviation (SD), measurement time, overload time % (OVL) and no-motion time with Class 2
IEC 61672-1:2013 accuracy in the frequency range 20 Hz ÷10 kHz and linear measurement
range 50 dBA LEQ ÷ 141 dBA PEAK. Available exchange rates: 2, 3, 4, 5 and 6
1
The Bluetooth®word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by
SVANTEK is under license. Other trademarks and trade names are those of their respective owners.

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•parallel Impulse, Fast and Slow detectors for the measurements with A, B, C, Zand LF (low
frequency) frequency-weighting filters
•1/1 Octave real-time analysis (option). Nine 1/1-octave filters with center frequencies from
31.5 Hz to 8 kHz (meeting Class 1 requirements of IEC 61260-1:2014) available simultaneously
with three user definable profiles for broadband measurements (SLM), time history logging and
audio recording
•1/3 Octave real-time analysis (option). Twenty eight 1/3-octave filters with center frequencies
from 20 Hz to 10 kHz (meeting Class 1 requirements of IEC 61260-1:2014) available
simultaneously with three user definable profiles for broadband measurements (SLM), time
history logging and audio recording
•Audio events recording (option), trigger andcontinuous mode, 12kHz and24 kHzsampling rate,
WAV format
Note: SV 973 has two different dynamic ranges - one dedicated for the SLM functions (Level
Meter, 1/1 Octave, 1/3 Octave and RT60) and another one dedicated for the Dosimeter
function. Due to this theinstrument uses twodifferent calibration factors, and you must perform
separate calibrations while using SV973 as SLM and as Dosimeter!
1.2 GENERAL FEATURES OF SV 973
•Sound Level Meter in extremely small pocket size body
•Noise measurements meeting Class 2 IEC 61672-1:2013 accuracy
•Dosimeter function for personal noise monitoring in the workplace
•1/1 & 1/3 octave real-time frequency analysis (option)
•Audio event recording (option)
•Audio records on demand, created before or after measurement, added to a measurement file
•Statistical analysis with up to 10 percentile values
•Time-history with two logging step intervals
•Automated calibration start and save
•Integration measurement run time programmable up to 24 h
•Long operation time: 20 h ÷ 38 h (depending on configuration and environmental conditions)
•Wireless connectivity with low energy Long Range Bluetooth®Smart (4.2) interface
•Setup editor available with Supervisor or SvanPC++ software
•Super contrast colour OLED display
•Wide range of temperature operating conditions
•Very handy, light weight and robust pocket size case
•Easy and friendly user interface for quick start and stop
1.3 ACCESSORIES INCLUDED
•ST 973 MEMS microphone with LIFETIME WARRANTY!
•SC 158 micro USB-C cable
•SA 22 foam windscreen
•SA 80 pocket soft bag for SV 973
•batteries four AAA type
•CD with manual and links to the Supervisor and SvanPC++ installation files

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1.4 ACCESSORIES AVAILABLE
•SV 34B Class 2 sound calibrator: 114 dB/1000 Hz
•SP 75 RS232 interface option for SV 973
•SA 72 carrying case for SV 973 and accessories (waterproof)
1.5 FIRMWARE OPTIONS AVAILABLE
•SF 973_PACK Level Meter including 1/1 & 1/3 octave analysis, audio recording
•SF 973_1 1/1 octave analysis option
•SF 973_2 1/3 octave analysis option
•SF 973_5 Reverberation time analysis (RT60) option
•SF 973_15 Audio recording option
Note: The software options listed above can be purchased at any time, as only the entry of a
special unlocks code is required for their activation.

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2 GENERAL INFORMATION
2.1 INSTRUMENT CONFIGURATIONS
The instrument's normal operating mode as SLM assumes operating with the microphone attached to
the instrument and without a windscreen. Optionally the instrument can be operated with the windscreen
attached to the microphone (see Appendix C for specification).
Note: To have measurements in accordance with the IEC 61672-1:2013 standard it is
necessary to set the appropriate compensation in the Compensation Filter screen (see
Chapter 4.7).
2.1 INPUT AND OUTPUT SOCKETS OF THE INSTRUMENT
Top cover of the instrument
The measurement Input is placed in the centre of the
instrument’s top cover. The microphone capsule with the
USB-C connector has a special locking ring with the screw.
The ring should be tightened to light resistance only. The full
description of the microphone connector is given in
Appendix C.
Bottom cover of the instrument
In the bottom cover, there is only one socket - USB. This
socket has a special protection cover held in place by a small
captive screw.

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The USB-C Device 2.0 interface is the serial interface working with 12 MHz clock in the full speed mode
and with 480 MHz in the high-speed mode, which is a default mode of the instrument. Thanks to its
speed, it is widely used in all PCs. The standard 4-pin socket is described in detail in Appendix C.
Note: Switchthe power off before connecting theinstrument to any other device (e.g. a printer
or a Personal Computer) or fitting the microphone capsule.
2.2 INSTRUMENT POWER
SV 973 can be powered by one of the following sources:
•Four AAA standard size batteries fitted internally. In the case of alkaline type, a new fully charged
set can operate more than 20 h (6.0 V / 0.8 Ah). Measurements with the display off extend the
working time to more than 30 h.
•USB-C interface –100 mA HUB.
When the instrument is powered from internal batteries, the “battery” icon is presented on the top line
of the display.
The battery condition can be checked through the Battery screen. It is also presented continuously on
the top line of the display by means of the number of bars in the “battery” icon.
When voltage of the batteries is too low for reliable measurements, the icon is red and during attempt to
switch the instrument on, the Low Battery! message occurs on the display for 2 seconds and the
instrument switches off by itself.
Powering the instrument from the USB-C interface is performed by
connecting its USB socket to the PC or other USB power source via the
SC 158 cable.
When the USB is connected, the instrument automatically switches
powering from the internal batteries to the USB powering. After
disconnection the USB, the instrument will automatically switch
powering to the internal batteries.
Note: When the instrument is powering via USB, the internal batteries are slightly discharging.
You should remember about this effect and remove the battery if discharging is undesirable.
Note: Use only high-quality USB-C cables, such as SC 158. Many poor-quality cables do not
ensure low resistance of the cable, thus disabling proper operating of the instrument.
When there is a connection to the USB-C interface (USB Device socket is connected by the SC 158
cable to a PC), the “USB”icon is presented on the top of the display and the Battery screen displays
the source voltage.
Note: In case the “battery” icon is red, it is strongly recommended to use USB-C interface as
soon as possible to ensure reliable operation. If no suitable external power source is provided
the instrument will be switched off automatically after a short time!
Prolonging the internal source of the instrument’s power can be achieved by means of the LCD screen
Dim Mode. You can configure the power saver function (Dim Mode) in the Screen Set. screen (path:
<Menu> / Display / Screen Set.).
2.3 CONTROL KEYS ON THE FRONT PANEL
Control of the instrument has been developed in a fully interactive manner. The user can operate the
instrument by selecting the appropriate position from the screen Menu list. Thanks to that, the number
of the control keys of the instrument has been reduced to eight for ease of use and convenience.

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The following control keys are located on the front panel of the
instrument:
•<ESC>
•<Enter>
•▲,◄, ►, ▼
•<Shift>
•<Start/Stop>
The action given in (...) brackets denotes the second key function
which is available after pressing it in conjunction (or in sequence)
with the <Shift> key.
<Shift>
The second function of a key can be used when the <Shift> key is pressed with
<ESC> or arrow keys. This key can be used in two different modes, which can be
configured in the Keyboard screen (path: <Menu> / Instrument / Keyboard):
•like in a computer keyboard, when both <Shift> and the second key must be
pressed simultaneously (Direct mode);
•like in a smartphone keyboard, when the first <Shift> key should be pressed
and released and then the second key pressed (2nd Function mode).
Note: Simultaneous pressing of the <Shift> and <Start/Stop> keys turning the instrument on
or off.
<Start/Stop>
This key allows you to start and stop a measurement process.
<Enter>
This key allows you to open the selected position on the Menu list, to confirm selected
settings or to switch the sub-views in the measurement mode. Some additional
functions of this key will be described in the following chapters of this manual.
<ESC>
This key closes lists of parameters or other screens and return to the upper list of the
menu. It acts in an opposite way to the <Enter> key. When a screen is closed after
pressing the <ESC> key, any changes just made are ignored.
In the Measurement mode, this key switches results presentation views.
<Shift>+<ESC>
This combination of keys allows you to pause or break the measurement process
temporarily. If there is no current running measurement in progress this key opens the
Setup Manager menu.
◄/ ►
These keys allow you, in particular, to:
•change viewed result in the measurement mode,
•select column in a multi-column parameter list,
•select parameter value in an active position (e.g. filter Z, A, C; integration period:
1s, 2s, 3s, … etc.),
•control cursor in the Logger, Statistics and Spectrum views,
•select position of a character in the text editor screen,
•speed up changing of numerical values of the parameters when pressed and held.
(◄ /►)
These ◄/ ►keys pressed in together with <Shift> allow you, in particular, to:
•select parameter value in an active position (e.g. filter Z, A, C;integration period:
1s, 2s, 3s, … etc.),
•shift cursor from the first to the last position and back on the plot.
▲/ ▼
These keys allow you, in particular, to:
•select position on the list,
•select correct character in the text editor screen.
(▲ / ▼)
These ▲/ ▼ keys pressed with <Shift> allows you, in particular, to:
•change view in the measurement mode,

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•change relationship between Y-axis and X-axis of plots,
•program the Real Time Clock (RTC) and delayed run Timer.
<Menu>
The simultaneous pressing of the <ESC> and <Enter> keys opens the main Menu
containing seven sections: Function, Measurement, Display, File, Instrument,
Aux. Setup and Report. Each section contains positions, that open screens with
submenu or lists of configuration parameters. These sections will be described in detail
in the following chapters of the manual.
<REC>
The simultaneous pressing of the ◄and ►keys initiates recording of a voice signal
as a comment (see Chapter 8.3).
2.4 WORKING WITH INSTRUMENT
To start using the instrument the user should turn it on with the <Shift> and <Start/Stop> keys at the
same time. Hold both keys down for 1 or 2 seconds and release to switch on.
The instrument is controlled by means of eight keys on the keypad. Using these keys, one can access
all available functions and change the value of all available parameters.
The instrument is equipped with the super contrast OLED colour display (96 x 96 pixels), which displays
the measurement results and the configuration menu.
The instrument has two general modes of operation: measurement performance / results preview mode
and configuration mode with the use of menu functionality.
2.4.1 Measurement mode
The measurement results can be viewed in different views, depending on the selected Measurement
Function.
Measurement views
Views present measurement results as well as additional information by means
of icons regarding:
- instrument status: memory, power, real time, etc.;
- measurement status: measurement elapsed time, measurement start/stop/
pause, trigger, logger etc.;
- measurement parameters: measured result, profile number, file name,
detector type, filter etc.
Measurement results can be presented in different
views, so called display modes, some of which are
always available, and some can be activated or
deactivated.
Some views present numerical and some graphical
results, like on the right-hand example: time-history plot
and spectrum.
In some display modes you can toggle sub-views by
pressing the <Enter> key.
You can switch between views using the ▲/ ▼ keys
pressed with <Shift>, or with the <Esc> key.
<ENT>
All icons are described in Chapter 2.6, other fields and view control functions - in Chapter 5.

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2.4.2 Configuration mode
To configure a measurement or the instrument, use the menu, which is switched with the <Menu> key.
The menu consists of different type of screens, which include main menu, sections, lists of options, lists
of parameters, text editor screens, information screens etc.
User interface mode
The user interface may be presented in three modes:
Start/Stop, Simple or Advanced. These modes can be
selected in the User Inter. screen of the Instrument
section. The Simple mode enables basic instrument
settings, while the Advanced mode enables full scope
of available settings. Many screens can therefore have
different view depending on the selected operational
mode.
The Start/Stop mode limits the menu to only one
User Interface position in the main menu and
measurement screens.
<ENT>
<Menu>
Note: For parameters hidden in the Simple interface mode the instrument will use settings
previously defined in the Advanced mode or default settings.
When the Simple interfacemode is being selected after
the Advanced mode theinstrumentproposes to restore
the default settings by asking the question: Do you
restore the default value of the advanced settings?
In case of No, all hidden in the Simple mode
parameters will have settings defined in the Advanced
mode. In case of Yes, the instrument will set all hidden
parameters to default values.
<ENT>
Main menu
The main menu (Menu) contains headers of seven sections, which contain
another sub-menu. The main menu is openedafter pressingthe <Menu> (<Shift>
and <Enter>) key.
Recent Items list
Double-pressing of the <Menu> key opens the list of recently used menu items.
This enables accessing most frequently used lists of parameters and lists of
options quickly, without the necessity of passing through the whole menu.
Selecting position
The desired position in the list is selected with the ▲/ ▼
key.
▼

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Opening position
After selecting a desired position in the menu list, press
the <Enter> key to open it. After this operation, a new
sub-menu, list of option, list of parameter or information
screen appears on the display.
<ENT>
List of parameters
A list of parameters contains parameters for which you may select the value from
the available set.
•Use the ▲/ ▼key to select a parameter in the list.
•Use the ◄/ ►key to change a value of the selected parameter.
•Press <Enter> to saves all performed changes in the list of parameters.
List of options
In the list of options, you can select only one option. The selection of an option is
performed in the following way. Select the desired option with the ▲/ ▼key and
press <Enter>. Thisoption becomes active and the listis closed. After re-entering
this list again, the last selected option will be marked.
If the parameter has a numerical value, you can speed up a selection by pressing the ◄/ ►key and
keeping it pressed by more than 2 seconds. In this case, the parameter value starts to change
automatically until you release the pressed button.
You may change the numerical parameter value with a larger step (usually 10) with the ◄/ ►key
pressed with <Shift>.
Matrix of parameters
When the list of parameters consists of more than one column you may change:
•column with the ◄/ ►key
•line with the ▲/ ▼ key
•value in a selected position with the ◄/ ►key pressed with <Shift>
•all values in a line with the ▲/ ▼ key pressed with <Shift>
•all values in a column, if the cursor is on one of Profile positions, with the
◄/ ►key pressed with <Shift>
•all values in a matrix, if the cursor is on one of Profile positions, with the
▲/ ▼ key pressed with <Shift>.
Complex parameters
For complex parameters, consistedof morethan one value field like RTC or result
screen, you should select the field with the ◄/ ►/ ▲/ ▼key and then select the
value with the ◄/ ►key pressed with <Shift>. The selection should be
confirmed by <Enter>.
In all cases the <Enter> key is used for confirmation of changes and for closing the opened list. The list
is closed, ignoring any made changes by pressing the <ESC> key.
Text editor screen
There are screens used for text edition (i.e. the name of
the file). Such screens contain help information to guide
on how to edit the text. The character which is displayed
inversely may be edited.
►

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•Use the ◄/ ►key to select a position of the character in the edited text.
•Use the ▲/ ▼key to change the existing character with another ASCII character. The subsequent
digits, underline, upper case letters and space appear in the inversely displayed position after each
press of said key.
•Use the ◄/ ►key pressed with <Shift> to insert or delete a position in the edited text.
Information screen
Some screens inform about the state of the instrument, available memory,
standards fulfilled by the instrument, etc. To scroll through the screen, use the
▲/ ▼keys. To close such screen, press <ESC>.
Help information
In most screens, the last line or two lines contain help information: how to select
or modify the parameter’s value, change the character in the text line etc. For
example, Delete: Shift < means that you can delete the selected position with
the ◄key pressed with <Shift>.
Inactive parameters
If some functions or parameters are not available, the positions in the menu or
parameter lists linked with this function or parameter become inactive (the
selected line field will be in the frame with black background, not yellow). For
example, if Logger (path: <Menu> / Measurement / Logging / Logger Set.) is
switched off, some other Logging positions become not active!
2.5 GETTING STARTED
Turning instrument on
To switch the power on, press the <Shift> and
<Start/Stop> keys simultaneously. The instrument goes
through the self-test routine (during this time the
manufacturer's logo and the name of the instrument is
displayed) and then it enters Running SPL view mode, if
it was enabled, or One profile view.
Starting measurements
To start a measurement, press the <Start/Stop> key.
After start delay count down the results of the
measurement will be displayed in the one profile view.
After turning on, the instrument requires 30 seconds to
warm up. If you press the <Start> key earlier, the
instrument will delay a measurement for longer time.
<Start>
One profile view is always available for most Functions of the instrument. The measurement results can
also be presented in other views, which you may enable or disable.
Pausing measurement
To pause a measurement, press the <Shift> and <ESC>
key together. The measurement will be paused and the
icon will appear together with the Help section.
<Sh+ESC>