Svantek Shawcity SVAN 977C User manual

USER MANUAL
SVAN 977C
SOUND & VIBRATION
ANALYSER
Warsaw, 2021-01-15
Rev. 1.00
Copyright © 2021 SVANTEK.
All rights reserved.

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SVAN 977C User Manual
Note: Because of continuous product improvement SVANTEK reserves the right to make changes to
product specifications without notice. To download the most up to date User Manual please visit our web site
at www.svantek.com. This User Manual presents the firmware revision named 1.41.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 screens
presented in the text of this manual.
WEEE Notice: 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 © 2021 Svantek Sp. z o.o.
All rights reserved.
Reproduction without permission is prohibited.
Trademarks
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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SVAN 977C User Manual
CONTENTS
INDEX 9
1INTRODUCTION 12
1.1 SVAN 977C as Sound Level Meter & Analyser 13
1.2 SVAN 977C as Vibration Level Meter & Analyser 13
1.3 General features of SVAN 977C 13
1.4 Accessories included 14
1.5 Accessories available 14
1.6 Firmware options available 14
2GENERAL INFORMATION 15
2.1 Measurement configurations as SLM 15
2.2 Measurement configurations as VLM 16
2.3 Input and output sockets of the instrument 16
2.4 Control keys on the front panel 18
2.5 Working with the instrument 20
2.5.1 Measurement mode 20
2.5.2 Configuration mode 22
2.6 Instrument power 25
2.7 Default settings 26
2.8 Description of icons 27
2.9 Overload and underrange detection 28
2.10Saving data 29
2.11Downloading and uploading files 33
2.12Activating optional functions 33
3MEASUREMENT FUNCTIONS AND CALIBRATION –Function 34
3.1 Selecting instrument mode –Mode 34
3.2 Activating measurement functions –Measurement Function 34
3.3 Calibration of the instrument –Calibration 35
3.3.1 System Check 36
3.3.2 Calibration by Sensitivity (Acoustic signal) 36
3.3.3 Calibration by Sensitivity (Vibration signal) 37
3.3.4 Calibration by Measurement (Acoustic signal) 37
3.3.5 Calibration by Measurement (Vibration signal) 38
3.3.6 History of performed calibrations –Calibration History 39
3.3.7 Erasing calibration records –Clear Calibr. History 39
3.3.8 Automatic calibration –Auto Calibration 40
3.3.9 Post measurement calibration –Post Calibration 40
4CONFIGURING MEASUREMENT PARAMETERS –Measurement 41
4.1 Setting general measurement parameters –General Settings 42
4.2 Setting measurement trigger –Measurement Trigger 44

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SVAN 977C User Manual
4.3 Setting parameters for profiles –Profiles 46
4.4 Configuring data logging –Logging 47
4.4.1 Setting logger general parameters –Logger Setup 48
4.4.2 Selecting results for logging –Logger Results 50
4.4.3 Selecting additional summary results for saving –Summary Results 50
4.4.4 Configuring Logger trigger –Logger Trigger 50
4.4.5 Setting markers –Marker Setup 52
4.4.6 Configuring signal recording –Wave Recording 52
4.5 Selecting microphone compensation –Compensation 55
4.6 Selecting measurement range –Range 56
4.7 Setting RPM measurement –RPM Measurement 57
4.8 Setting workday exposure time –Exposure Time 58
4.9 Setting statistical levels –Statistical Levels 58
4.10Programming instrument’s internal timer – Timer 58
4.10.1Example of timer execution 59
4.11Advanced alarm function –Alarms 60
5CONFIGURING DATA VIEWING –Display 61
5.1 Enabling views –Display Modes 61
5.1.1 Running SPL view 62
5.1.2 Single Profile view 62
5.1.3 Combined views 63
5.1.4 Logger view 65
5.1.5 Spectrum view 66
5.1.6 Statistics view 66
5.1.7 Meter Table view 67
5.1.8 GPS view 67
5.1.9 File information view 67
5.2 Adjusting plot views –Display Scale 67
5.3 Adjusting logger view –Logger View 69
5.4 Configuring display brightness and power saver –Screen Setup 69
6MANAGING FILES –File 71
6.1 Managing instrument’s files – File Manager 72
6.1.1 Assigning the directory for saving data files –Set as Working Directory 72
6.1.2 Opening files/directories –Open 73
6.1.3 Deleting files/directories –Delete 73
6.1.4 Erasing all files in a directory –Delete All 73
6.1.5 Renaming files/directories –Rename 74
6.1.6 Viewing information about files/directories –Info 74
6.2 Managing setup files –Setup Manager 74
7CONFIGURING INSTRUMENT PARAMETERS –Instrument 76
7.1 Measurement auto start –Auto Start 76
7.2 Checking power –Battery 76

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SVAN 977C User Manual
7.3 Setting interface parameters –Communication Ports 77
7.4 Setting external power On/Off conditions –External Power 78
7.5 Selecting IEPE current supply –IEPE Current 78
7.6 Programming keyboard –Keyboard Settings 78
7.7 Setting parameters of I/O port –Multifunction I/O 79
7.8 Programming instrument’s internal Real Time Clock – RTC 81
7.9 Remote communication settings –Wireless Transfer 82
7.9.1 Selecting network type –Network 82
7.9.2 Configuring modem basic settings –Modem 82
7.9.3 Configuring connections –Modem Connection 83
7.9.4 Configuring SMS service –SMS Options 84
7.9.5 Configuring e-mail service –E-mail Settings 85
7.10Introducing instrument name –Unit Name 86
7.11Checking instrument properties –Unit Label 86
8AUXILIARY SETTINGS –Auxiliary Setup 87
8.1 Selecting user interface language –Language 87
8.2 Restoring factory settings –Factory Settings 87
8.3 Setting reference levels –Reference Levels 87
8.4 Selecting units for vibration results –Vibration Units 88
8.5 Activating warnings –Warnings 88
9PRINTING REPORTS –Report 90
10 1/1- AND 1/3-OCTAVE ANALYSER 93
10.1Selecting 1/1 Octave or 1/3 Octave function 93
10.2Configuring 1/1- or 1/3-octave analyser 94
10.2.1General measurement settings for 1/1- or 1/3-octave analysis –General Settings 94
10.2.2Selecting measurement range for 1/1- or 1/3-octave analysis –Range 94
10.2.3Logging of 1/1- or 1/3-octave spectra –Logging 94
10.2.4Setting parameters of 1/1- or 1/3-octave analysis –Spectrum 94
10.3Configuring 1/1- or 1/3 octave spectra views 97
10.3.1Presentation of 1/1- or 1/3 octave spectra 97
10.3.2Adjusting spectrum plot scale –Display Scale 98
10.3.3Selecting spectra to be viewed –Spectrum View 99
10.3.4Changing spectrum type in Vibration modes –Spectrum Type 100
10.3.5Spectrum statistics 101
11 FFT ANALYSER 102
11.1Selecting FFT function 102
11.2Configuring FFT analyser 102
11.2.1General measurement settings of FFT analysis –General Settings 102
11.2.2Selecting measurement range for FFT analysis –Range 102
11.2.3Logging FFT spectra –Logging 103
11.2.4Setting parameters of FFT analysis –FFT 103

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SVAN 977C User Manual
11.3Configuring FFT spectra view 104
11.3.1Presentation of FFT spectra 104
11.3.2Setting scale of spectrum plot –Display Scale 105
11.3.3Selecting spectra to be viewed –Spectrum View 106
11.3.4Changing spectrum type in Vibration modes –Spectrum Type 107
12 REVERBERATION TIME MEASUREMENTS –RT60 108
12.1Selecting RT 60 function 108
12.2Setting RT60 parameters –RT60 Settings 108
12.3Configuring RT60 views 111
12.4Starting RT60 measurements 111
12.5Viewing RT60 results 113
13 STI CALCULATIONS –STIPA 116
13.1Introduction 116
13.2STI method background 116
13.3Selecting the STIPA function 116
13.4STIPA measurement and calculation process 117
13.4.1Measured results 117
13.4.2Project structure 119
13.4.3Results averaging 120
13.4.4STIPA settings 120
13.4.5Considering ambient noise distortions 122
13.4.6STIPA measurements 123
13.5Files downloading and data processing 125
13.5.1Measurement with BA Assistant 125
13.5.2Measurement with SVAN 977A without BA Assistant 126
13.5.3Presentation of STIPA results 127
13.5.4Changing background noise values 128
13.5.5Generating reports 129
14 REMOTE CONTROL AND DATA PROCESSING TOOLS 130
15 MAINTENANCE 131
15.1Replacing batteries 131
15.2Memory card extraction and insertion 131
15.3Transducers 131
15.4Resetting instrument 133
15.5Firmware upgrade 133
15.6Preservation of internal batteries 133
15.7Transportation and storage 133
15.8Cleaning 134
15.9Troubleshooting 134
16 GLOSSARY 135
16.1Modes and Measurement Functions 135

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SVAN 977C User Manual
16.2Calibration 136
16.3Definitions of measured results 138
16.4Measurement parameters 140
16.5Display parameters 154
16.6Instrument parameters 159
16.7Auxiliary parameters 166
APPENDIX A. REMOTE CONTROL 168
A.1. Function #1 –Input/Output of the control setting codes 168
A.2. Function #2 –Read out of the main measurement results 169
A.3. Function #3 –Read out of the measurement results in 1/x OCTAVE or FFT mode 171
A.4. Function #7 –Special control functions 171
A.5. Function #D –Read / Write the data files from the external memory (SD-card) 181
A.6. Control setting codes 182
APPENDIX B. DATA FILE STRUCTURES 189
B.1. General structure of the SVAN 977 files 189
B.2. Structure of the file containing results from logger’s file 213
B.2.1. The contents of the logger file 213
B.2.1.1. Record with the results 214
B.2.1.2. Record with the state of the markers 215
B.2.1.3. Record with the breaks in the results registration 216
B.2.1.4. Record with the breaks account PAUSE in the results registration 216
B.2.1.5. Record with the wave file name 216
B.2.1.6. Record with Summary Results 216
B.2.1.8. Record with METEO data 217
B.2.1.9. Record with name of the comment file 217
B.3. Structure of the SETUP file 218
B.4. Date and time 218
APPENDIX C. TECHNICAL SPECIFICATIONS 219
C.1. Specification of SVAN 977C as Sound Level Meter 219
C.1.1 Specification of SVAN 977C as SLM in the standard configuration 219
C.1.2 Effect of the SA 22 windscreen 237
C.1.3 Effect of the SA 277C Outdoor microphone kit 249
C.1.4 Effect of Vibration 249
C.2. Specification of SVAN 977C as Vibration Level Meter 251
C.3. Specification of SVAN 977C as 1/1 OCTAVE and 1/3 OCTAVE analyser 257
C.3.1 Specification of SVAN 977C as 1/1 and 1/3 octave analyser in the standard
configuration 257
C.3.2 1/1 and 1/3 octave filters 260
C.4. Frequency characteristics of the implemented broadband digital filters 274
C.5. Miscellaneous specification of SVAN 977C 281
C.6. Specification of SV 80 accelerometer 287
C.7. Using the SA 277C Outdoor microphone kit 288
C.8. EU Declaration of Conformity 321

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SVAN 977C User Manual
APPENDIX D. DEFINITIONS AND FORMULAE OF MEASURED VALUES 322
D.1. Sound Level Meter 322
D.1.1 Basic terms and definitions (SLM mode) 322
D.1.2 Definitions and formulas of SLM results 323
D.2. Vibration Level Meter 326
D.2.1 Basic terms and definitions (VLM mode) 326
D.2.2 Definitions and formulas of the VLM result 326
D.3. Statistical levels –Ln definition 327
APPENDIX E. REVERBERATION TIME CALCULATIONS 329
E.1. Introduction 329
E.2. Definitions and calculation of RT 60 reverberation time 330
E.3. Description of decay curve recording in different measurement methods 332
APPENDIX F. SA 277C OUTDOOR MICROPHONE KIT ASSEMBLY GUIDE 335
F.1. Part Set 335
F.2. Assembly of SA 277C 337
F.3. Important notes 343

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SVAN 977C User Manual
INDEX
1
1/1 Octave · 35, 94
1/3 Octave · 35, 94
A
Acceleration · 101, 108
Accelerometer · 133
Accelerometer sensitivity · 38
Accessories · 14
Alarm e-mail · 82
Alarm level · 81
Alarm pulse · 81
Alarm SMS · 82
Alarm source · 81
Alarms · 61
Analog Out · 80
APN · 85
Audio sampling · 54
Auto calibration · 41
Auto start · 77
Automatic file saving · 30, 32
Auxiliary settings · 88
Averaged spectrum · 100, 107
Averaging · 104
B
Band · 95, 104
Battery · 25, 77
Bits per sample · 54
Bluetooth · 78
Brightness · 70
C
Calibration · 36
Calibration by measurement · 38, 39
Calibration by sensitivity · 37, 38
Calibration factor · 37, 38, 39
Calibration history · 40
Calibration level · 37, 38, 39
Calibration result · 38, 39
Cleaning · 135
Clear calibration history · 40
Combined view · 64
Communication ports · 78
Complex parameter · 23
Configuration mode · 22
Control keys · 18
D
Data port · 85
Data protocol · 84
Day time limits · 45
Decay · 109
Decay method · 112
Decimal mark · 70, 100
Default settings · 26
Deleting all files · 74
Deleting file · 74
Detector · 48
Diffuse field compensation · 57
Digital In · 80
Digital Out · 80
Directory · 30, 73
Displacement · 101, 108
Display mode · 20, 62, 97, 105
Display scale · 68, 99, 106
Display settings · 62
DNS server · 85
Downloading · 33
Dynamics · 69, 99, 107
DynDNS server · 85
E
E-mail · 84, 86
Exponential integration · 44
Exposure time · 59
External battery · 25
External DC · 25
External power · 79
External trigger · 47, 56
F
Factory settings · 26, 88
Fast · 48
FFT · 35, 103, 104
FFT window · 104
File · 30, 73
File info view · 68
File information · 75
File manager · 29, 73
File name · 54
Files · 72
Filter · 47, 54, 97, 104
Firmware options · 14
Flat Top · 104
Free field compensation · 57
Frequency range · 110
Function · 35

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SVAN 977C User Manual
G
General settings · 43, 95, 103
GPRS · 83
GPS · 78
GPS view · 68
Gradient · 47
Gradient trigger · 46
Grid · 69, 100, 107
H
Hanning · 104
Help information · 25
High range · 58
I
I/O active level · 81
I/O function · 81
I/O mode · 80
I/O polarisation · 81
Icons · 27
IEPE current · 79
Impulse · 48, 109
Impulse method · 113
Impulse response method · 109
Inactive position · 25
Infinite integration period · 43
Information screen · 23
Input/output · 15, 16
Instantaneous spectrum · 100, 107
Instrument settings · 77
Integration period · 43, 48, 95, 103
Integration period trigger · 56
Interface · 78, 91
Internet configuration · 84
Interrupted noise method · 109
K
Kaiser-Bessel · 104
Keyboard · 18, 79
L
Language · 88
Level meter · 35
Level trigger · 46, 52, 55
Linear integration · 44
Lines · 104
List of options · 23
List of parameters · 22
Logger · 30, 31, 48, 49
Logger name · 50
Logger results · 51, 95, 104
Logger split · 50
Logger step · 48, 50, 95, 104
Logger trigger · 52
Logger view · 66, 70
Logging · 48, 95, 104
Low range · 58
M
Main menu · 22
Maintenance · 132
Manual file saving · 31, 33
Marker · 53
Matrix of parameters · 23
Max spectrum · 51, 100, 107
Measurement function · 35, 94, 103, 109
Measurement mode · 20
Measurement settings · 42
Measurement trigger · 45
Memory · 29
Menu position · 22
Meteo · 51
Microphone · 133
Microphone sensitivity · 37
Min spectrum · 51, 100, 107
Mode · 35
Modem · 83
Modem connection · 84
Multifunction I/O · 80
Multiple timer · 59
N
NC spectrum · 100
Network · 83
Noise margin · 111
NR spectrum · 100
O
Opening file · 74
Opening position · 22
Optional functions · 33
Outdoor airport compensation · 57
Outdoor environment compensation · 57
P
Post calibration · 41
Post-trigger · 52
Power saver · 70
Powering · 25, 132
Preservation · 134
Pre-trigger · 52, 57
Profiles · 47
R
Range · 58, 95, 103
Real-time clock · 82
Reconnection · 84

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SVAN 977C User Manual
Recording on trigger · 54
Recording time · 55, 56, 110
Rectangle · 104
Reference levels · 88
Registration port · 85
Remote control · 131
Renaming file · 75
Repetition cycles · 44, 48, 95, 103
Report · 91
Reset · 134
Resolution · 69, 99
Results file · 31
Results presentation · 20
Results view · 62, 97, 105
RMS detector · 97
RMS integration · 44
Rolling time · 45
RPM measurement · 58
RS232 · 78, 91
RT averaging · 110
RT integrated data · 112
RT method · 110
RT octave · 110
RT raw data · 112
RT smoothed data · 112
RT smoothing · 112
RT step · 110
RT60 · 35, 109
RT60 settings · 109
RT60 view · 112, 114
RTC · 82
Running SPL · 20, 63
S
Save setup · 76
Scale · 69, 99, 106
Screen dim · 70
Screen setup · 70
SD card · 29, 132
Serial port · 78
Server address · 85
Setup file · 33
Setup manager · 29, 75
Signal gain · 54
Signal recording · 53
Sim authentication · 84
Single Profile view · 63
Single timer · 59
Slope trigger · 45, 55
Slow · 48
SMS · 84, 85
Sound analyser · 13
Sound level meter · 13
Sound meter · 35
Source type · 81
Spectrum · 57, 98, 105
Spectrum settings · 95
Spectrum statistics · 51
Spectrum type · 101, 108
Spectrum view · 67, 98, 105, 107
Speech intelligibility · 117
Start delay · 43
Start measurements · 21
Start synchronisation · 43
Statistical levels · 59
Statistics · 44, 51
Statistics view · 67
STIPA · 117
Storage · 134
Summary results · 31, 48, 50, 51, 95, 104
Svantek mail · 86
System check · 37
T
TCP · 84
Text editor · 23
Timer · 59
Total value · 94
Transducers · 132
Trigger · 45, 52
Trigger level · 47, 52, 56
Trigger on marker · 54
Trigger period · 55, 56
Trigger pulse · 81
Trigger source · 47, 56
Troubleshooting · 135
Turn on · 20
U
Unit label · 87
Upgrade · 134
Uploading · 33
USB · 25
V
Velocity · 101, 108
Vibration analyser · 13
Vibration level meter · 13
Vibration meter · 35
Vibration units · 89
Viewed spectra · 100
W
Warnings · 89
Wave file · 32
Wave format · 54
Wave recording · 53
Wave trigger · 54
Windscreen compensation · 57
Wireless transfer · 83
Working directory · 73

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SVAN 977C User Manual
1 INTRODUCTION
SVAN 977C is an all-digital, Class 1 Sound & Vibration level meter designed for
general acoustic and vibration, environmental noise, occupational health and
building acoustic measurements.
Three acoustic or vibration user configurable profiles allow parallel
measurements with independently defined frequency filters and RMS detector
time constants. Each profile provides significant number of results (like Spl,Leq,
Sel, Lden, LEPd, Ltm3, LTeq, Peak,Max and Min as well as ten statistics, two
rolling Leq, expected Leq value, standard Leq deviation and noise criterium and
noise ratio indexes in case of sound measurements or RMS,Ovl,Peak,P-P in
case of vibration measurements). Advanced time history logging for each profile
provides complete information about the measured signal using the SD-card
fitted in the bottom of the meter and can be easy downloaded to any PC using
the USB interface and SvanPC++ software.
All required weighting filters: A, B, C, Z, U, AU and LF for sound measurements
and HP1,HP3,HP10,Vel1,Vel3,Vel10,VelMF,Dil1,Dil3,Dil10 and Wh for
general vibration measurements (like acceleration, velocity and displacement);
are available with this instrument.
Using the computational power of its digital signal processor SVAN 977C can,
simultaneously to the meter mode, perform the real time 1/1 Octave or
optionally 1/3 Octave analysis including calculations of statistical levels or can
optionally perform FFT analysis.
The built-in frequency analyser offers 1/1 octave real-time analysis as a
standard feature and 1/3 octave and FFT as optional functions. The frequency
analysis is logged together with the time history of sound or vibration meter
results.
Time domain waveform signal recording ontheSD-cardis available as anoption
and advanced trigger and alarm functions are available in the standard version
of this instrument.
For building acoustic applications, SVAN 977C offers Reverberation Time
measurements (RT60) option working with the BA Assistant application for
smartphones.
SVAN 977C enables also STIPA calculations in accordance with IEC 60268-16:2011 as optional function.
A fast USB 1.1 interface (12 MHz) creates a real-time link for the PC "front-end" application of SVAN 977C. With
the use of optional interfaces (RS 232) the instrument can be remotely controlled from the PC with the use of
SvanPC++ software.
SVAN 977C is equipped with Bluetooth®1v.2.0+EDR module and can be remotely control by the SvanMOBILE
and BA Assistant smartphone applications.
Working as a part of the SV 277 monitoring station, equipped with 3G modem, SVAN 977C can transfer
measured data via Internet to PC with the use of SvanPC++_RC option or via SvanNET web service. The
instrument can be fully remotely controlled via these interfaces. The instrument has advanced alarms features,
enables the user notification about exceeded threshold levels by SMS or mails.
The instrument is powered from four AA standard alkaline or rechargeable batteries (i.e. NiMH –a separate
charger is required). Powering the instrument from the External DC power source or the USB interface is also
possible.
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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SVAN 977C User Manual
1.1 SVAN 977C AS SOUND LEVEL METER &ANALYSER
•Noise measurements (Peak, Max, Min, Spl, Leq, SEL, Lden, LEPd, Ltm3, LTeq, Leq statistics (Ln),
expected Leq value (EX), standard Leq deviation (SD), two rolling Leq (LR1 and LR2), measurement time
and overload time % (OVL) as well as noise criterium (NC) and noise ratio (NR) in case of 1/1 Octave
option) with Class 1 IEC 61672-1:2013 accuracy in the frequency range 20 Hz to 20 kHz with the MK 255
microphone.
•Parallel Impulse, Fast and Slow detectorsfor the measurements with A, B, C, Z, U, UA and LF frequency
filters.
•Two measurement ranges 25 dB RMS(A) ÷ 123 dB Peak (Low) and 35 dB RMS(A) ÷ 140 dB Peak (High).
•1/1 Octave and optional 1/3 Octave realtime analysis - 10 filters with centre frequencies 31.5 Hz ÷ 16 kHz
and 31 filters with centre frequencies 20 Hz ÷ 20 kHz, in accordance with Class 1 IEC 61260-1:2014.
•Optional reverberation time RT60 analysis function for 1/1 octave bands or 1/3 octave bands and three
total RMS levels (A, Cand Zweighted) in accordance with the ISO 3382 standard.
•STIPA (speech transmission index for public address systems) measurements of electro-acoustic and
acoustic environments effects that affect the speech intelligibility in the room acoustics and/or public address
systems.
1.2 SVAN 977C AS VIBRATION LEVEL METER &ANALYSER
•General Vibration measurements (acceleration, velocity and displacement) meeting ISO 20816-1:2016
standard in the frequency range depending on the parameters of the attached accelerometer, i.e. with the
SV 80 general purpose transducer is equal to 0.5 Hz ÷ 14 kHz.
•Parallel RMS, Max, Peak, Peak–Peak measurements.
•HP, HP1, HP3, HP10, Vel1,Vel3,Vel10,VelMF,Dil1,Dil3,Dil10 and Wh weighting filters.
•1/1 Octave and optional 1/3 Octave real time analysis - 15 filters with centre frequencies 1 Hz ÷16 kHz,
and 45 filters with centre frequencies 0.8 Hz ÷ 20 kHz, Class 1 IEC 61260-1: 2014.
•Optional RPM measurement with the use of RPM probe, connected to the I/O socket of SVAN 977C.
•Optional FFT analysis with the single Total overall value, performed with preselected frequency weighting
filters and windows.
1.3 GENERAL FEATURES OF SVAN 977C
•Advanced Data Logger function including spectrum logging on the micro SD card
•1/1 and 1/3 octave and FFT analyser (1/3 octave and FFT –optionally)
•Time domain waveform signal recording (option)
•Advanced trigger and alarm functions
•USB 1.1 Client interface (real time PC "front end" application supported)
•RS 232 interface
•Bluetooth®v.2.0+EDR module
•Integration time programmable up to 24 h
•Power supply by four AA rechargeable or standard batteries
•Handheld, light weight and robust case
•Easy to use with menu driven user interface

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SVAN 977C User Manual
1.4 ACCESSORIES INCLUDED
•MK 255 Microtech Gefell, 50 mV/Pa, prepolarised ½” condenser microphone
•SV 12L microphone preamplifier with IEPE power supply
•SA 22 foam windscreen
•SC 16 USB 1.1 cable
•SA 62 16 GB memory card - Kingston MicroSD HC Class 4
•four AA alkaline batteries
•CD with manual and links to the Supervisor and SvanPC++ installation files
1.5 ACCESSORIES AVAILABLE
•SA 277C outdoor microphone kit (microphone, desiccator and cable not included)
•SA 270D desiccator for the outdoor microphone kit
•SC 26 extension cable for SV 12L (TNC plug to TNC socket)
•SV 36 Class 1 sound calibrator: 94/114 dB@1000 Hz
•SA 17A external battery pack using 6 x AA batteries
•SA 143 carrying case for SVAN 977C and accessories (lightweight)
•SA 79 carrying case for SVAN 977C and accessories (waterproof)
•SA 47 carrying bag for SVAN 977C and accessories (fabric material)
•SV 55 interface RS 232 for SVAN 977C
•SV 80 general purpose vibration accelerometer 100 mV/g (10 mV/ms-2)
•SC 27 coiled cable for accelerometer 2 m
•SA 27/10-32 mounting magnetic base for accelerometer
•SA 15 power supply
•SA 31 external charger for four AA rechargeable batteries
•SV 58_H GPS module with USB HOST plug.
1.6 FIRMWARE OPTIONS AVAILABLE
The standard firmware of SVAN 977A includes 1/1 octave analysis. Other functions are optional:
•SF 977_2 1/3 octave analysis option
•SF 977_4 FFT analysis option
•SF 977_5 RT60 option
•SF 977_8 RPM option (excluding Laser Tachometer)
•SF 977_15 Time domain waveform signal recording option
•SF 977_20 STIPA option
Note: The software options for the instrument can be purchased at any time as only the introduction
of a special unlock code is required for their activation in a specific instrument. Contact your local
Svantek distributor for further information and costs for these options.

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SVAN 977C User Manual
2 GENERAL INFORMATION
2.1 MEASUREMENT CONFIGURATIONS AS SLM
The instrument's normal operating mode as SLM assumes operating with a preamplifier and a microphone
attached to the instrument and without a windscreen. Optionally the instrument can be operated with the
windscreen attached to the microphone or with the preamplifier and microphone fitted in the outdoor microphone
kit and connected with the instrument by the extension cable (see Appendix C.7 for specification).
During sound measurements, to meet the requirements of the Class 1 accuracy, it is recommended to install the
instrument on a tripod or in a holder to minimize the possibility of reflection and diffraction of acoustic waves. In
particular, the instrument must not be held close to the body of the person performing the measurement. The
instrument should be directed so that the microphone diaphragm plane is perpendicular to the direction of the
measured sound source (the incidence angle of the sound wave is 0 degree).
In the case of significant differences between the instrument’s temperature and the ambient temperature at the
measuring point, long enough acclimatization of the instrument is recommended so that its temperature is as
close to the ambient temperature as possible.
In the caseof measurementsinthe presence of wind, it is necessaryto use a windscreen.Thewindscreen should
be simply installed over the microphone with the preamplifier without any significant force.
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 4.5).
When measuring in the diffusion field (in small spaces) it is recommended to switch on the filter for the diffusion
field.
Before starting measurements, the instrument should be calibrated using
the recommended sound calibrator (see Chapter 3.3).

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2.2 MEASUREMENT CONFIGURATIONS AS VLM
The instrument can operate as VLM with the SV 80 general-
purpose accelerometer 100 mV/g (10 mV/ms-2) with the
SC 27 coiled cable (see Appendix C for specification).
Chapter 15.3 presents the way of connecting the
accelerometer to the instrument.
2.3 INPUT AND OUTPUT SOCKETS OF THE INSTRUMENT
SVAN 977C is supplied disassembled, so the user should mount the MK 255
microphone and SV 12L preamplifier on his own.
It doesn’t matter which elements will be assembled first: the microphone with
the preamplifier or the instrument with the preamplifier.
To connect the preamplifier to the instrument, first insert the tip of the
preamplifier into thesocket and tightenthering tothefirst screwthread. Then
move the preamplifier outer sleeve in the direction to the instrument and
tighten it to the screw thread.
See also Chapter 15 for instrument Maintenance.

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Top cover of the instrument
The measurement input is placed in the centre of the instrument’s top cover.
It is the TNC compatible socket. The SV 12L microphone preamplifier has a
specially designed matching TNC plug and a locking screw to secure the
preamplifier to the meter body. The accelerometers must be connected to
the instrument also using the TNC connector. The full description of the
signals connected to the socket is given in Appendix C.
Bottom cover of the instrument
In the bottom cover, there are four sockets, placed from the right to the left
as follows: 7-16V, Serial, USB and I/O.
The USB socket is the USB Device 1.1 interface –a serial interface working
with 12 MHz clock. Thanks to its speed, it is widely used in all PCs. In the
instrument, the standard 4-pin socket is used.
The Serial socket is the Serial Port with RS232 data transfer format in TTL
logic standard by means of the SV 55 interface. It conforms to the EIA
Standard RS 232C and enables remote programming of all instrument
functions and transmission to and from the instrument with speed from 300
bit/s to 115200 bit/s.
The additional multi-purpose input/output socket, called I/O, is a 3.5 mm jack
socket. In case the Analogue Output functionality is selected, the signal from
the input of the analogue/digital converter (before any frequency correction)
is available on this socket. This signal can be recorded using a magnetic
recorder or observed on an oscilloscope. The Digital Input as another
functionality that serves as the external trigger to the instrument, while the
Digital Output is used to generate the trigger pulse or alarm pulse from the
instrument.
There is a micro SD-card memory slot under the bottom cover of the
instrument and spaces for the 4 x AA batteries.
All sockets are described in detail in Appendix C for this manual.
You can power the instrument from the external
6 x AA battery pack (SA 17A) orDC power source
7 V DC÷16 V DC, 1.5 W (SA 15) via the 7–16 V
socket or from the USB power source via the
USB socket and SC 16 cable. The current
consumption depends on the voltage of the
power supplier.
Note: Use only high-quality USB cables, such as SC 16. Many poor-quality cables do not ensure low
resistance of the cable, thus disabling proper operating of the instrument.
Note: The originally supplied Kingston Industrial memory card has been tested by SVANTEK and
cards of this type are strongly recommended for use when the original card is going to be replaced.
Note: Switch the power off before connecting the instrument to any other device (e.g. a Personal
Computer).

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2.4 CONTROL KEYS ON THE FRONT PANEL
Control of the instrument has been developed in a fully interactive manner. Convenient and intuitive menu is
used for device configuration Thanks to that, the number of keys has been reduced to nine for ease of use and
convenience.
The following control keys are located on the front panel of the instrument:
•<ENTER>,(<Menu>),[<Save>],
•<ESC>, (<Cal>),[<S/P>],
•<Shift>,
•<Alt>,
•▲, ◄, ►, ▼
•<Start/Stop>.
Functions of these keys are described below. The name given in (...)
brackets denotes the second key function which is available after pressing it
in conjunction (or in sequence) with the <Shift> key. For the first two keys,
the name given in square brackets […] denotes also the third key function
which is available after pressing it in conjunction (or in sequence) with the
<Alt> key.
<Shift>
Enables the second function of some keys (for example, <Menu>).
<Alt>
Enables the third function of some keys (for example, <S/P>).
Note: These keys can be used in two different modes, which are configured in the Keyboard screen
(path: <Menu> / Instrument / Keyboard):
•like in a computer keyboard, when both the <Shift>/<Alt> key and the second key must be
pressed simultaneously (Direct mode);
•like in a smartphone keyboard, when the first <Shift>/<Alt> key should be pressed and
released and then the second key pressed (2nd Function mode).
Note: Simultaneous pressing of the <Alt> and <Start/Stop> keys turning the instrument on or off.
<Start/Stop>
This key starts or stops the measurement. You can set the mode of this key so that to
start or stop the measurements you should press <Start/Stop> simultaneously with
<Shift>. This can prevent accidentally starting or stopping a measurement.
<ENTER>
This key opens the selected position in the list and confirms selected settings. Some
additional functions of this key will be described in the following chapters of this manual.
(<Menu>)
This key (<Shift> + <ENTER>) opens the main Menu in the configuration mode. Double
press of the <Menu> key opens the list containing last opened configuration screens. It
gives faster access to the frequently used screens for easy navigation.
[<Save>]
This key (<Alt> + <ENTER>) enables saving of measurement results (see description in
Chapter 2.10).
<ESC>
This key escapes from the lists of parameters, menu lists or other screens and return to
the previous screen without saving changes. It acts in an opposite way to the <ENTER>
key.
(<Cal.>)
This key (<Shift> + <ESC>) opens the Calibration menu.
[<S/P>]
This key (<Alt> + <ESC>) breaks the measurement process temporary or enables
saving of the setup file if the instrument is not running the measurement.
◄, ►
These keys allow you to:
•change the cursor position to the left or right field;
•select column in a multi-column parameter list,

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•select a parameter value in an active position (e.g. filter Z, A, Cetc., Start Delay
period: 1s, 2s, 3s, … etc.). In case of numerical values, it speeds up selection after
pressing and holding,
•control cursor in graph views (Logger, Spectrum etc.),
•activate/deactivate markers no. 2 and 3.
(◄, ►)
The ◄/ ► keys used in conjunction with <Shift> allow you to:
•change a parameter’s value with double step (e.g. Start Delay period: form 1s to
11s, 21s, … etc.);
•shift cursor to the first or to the last position on the plot.
[◄, ►]
The ◄/ ► keys used in conjunction with <Alt> allow you to:
•select a parameter’s value in an active position (especially in the parameters table);
•insert or delete a character in the text editor screen.
▲, ▼
These keys allow you to:
•change a position in a list or a field in the result view;
•activate/deactivate markers no. 1 and 4.
(▲,▼)
The ▲ / ▼ keys used in conjunction with <Shift> allow you to:
•change a position in a list to the first one or the last one;
•change relationship between Y-axis and X-axis in the Logger and Spectrum views.
[▲,▼]
The ▲ / ▼ keys used in conjunction with <Alt> allow you to:
•change a result view;
•programme the Real-Time Clock (RTC) and Timer.
[Info]
The <Info> key (simultaneous pressing the ◄and ►
keys) opens the screen with the help information in the
measurement display modes. Press <ESC> or
<ENTER> to exit the Info screen.
<Markers>
The <Markers> key (<Shift> + <Alt>) enables marking the special events, occurring
during a measurement (for example, some sound or vibration disturbance). To activate
markers, the logger should be switched on (path: <Menu> / Measurement / Logging /
Logger Setup) and one or more logger results (Peak, Max, Min, Leq, LXY, LR1 or LR2
for sound measurements and Peak, P–P, Max or RMS for Vibration measurements) in
profiles should be active (path: <Menu> / Measurement / Logging / Logger Results).
To enter the marker mode, press the <Shift> and <Alt> keys simultaneously
during the measurement. Then four available markers will appear on the screen.
To switch on marker no. 1, press the ▲key (no. 2 - ◄, no. 3 - ►and no. 4 - ▼).
Active marker number will be highlighted. To switch off the marker, press the
appropriate arrow-key second time.
Markers disappear from the screen after pressing <Shift> and <Alt>, but their
status doesn’t change. To continue working with markers, press <Shift> and
<Alt> again.
Markers are saved in the logger file (see Appendix B for details) and can be
studied with the help of the SvanPC++ software.
An example presentation of the markers onthe time history plot is shown below.
<Shift> + <Alt>
▲

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2.5 WORKING WITH THE INSTRUMENT
The instrument is controlled by means of nine keys onthe keypad. Using these keys, one canaccess all available
functions and change the value of all available parameters.
The instrument is equipped with the super contrast OLED colour display (320 x 240 pixels), which displays the
measurement results and the configuration menu.
The instrument has two general modes of operation: measurement performance and results preview mode and
configuration mode with the use of Menu functionality.
Turning on the instrument
To turn the instrument on, press the <Alt> and <Start/Stop> keys at the same time.
The instrument goes through the self-test routine after turning on, displaying during this time the manufacturer
logo, the name of the instrument and the firmware version.
Then it enters the screen with the list of
settings from which you can select the
required one and confirm the selection with
the <ENTER> key or skip selecting with the
<ESC> key.
The instrument will warm up for one minute,
then it enters one of the results view mode:
=>
•in case of vibration measurement - the
Default mode set in the
Display Modes screen, or
•in case of sound measurement - the
Running SPL mode, if it was enabled,
or the Default mode set in the
Display Modes screen, if the
Running SPL mode was disabled.
2.5.1 Measurement mode
The measurement results can be viewed in different views or display modes, the set of which depend on the
selected Measurement Function and which you can change and activate/deactivate.
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30
40
50
60
70
80
13:30:00 13:30:09 13:30:17 13:30:26 13:30:35 13:30:43 13:30:52
Leq
Marker 1
Marker 2
Marker 3
Marker 4