Svantek SVAN 971 User manual

SVAN 971
Pocket-size Sound Level Meter&Analyser
USER MANUAL
SVANTEK Sp. z o.o.
WARSAW, March 2013
© SVANTEK

SVAN 971 USER'S MANUAL_____________________________________________ _2
Notice: This user manual presents the software revision named 1.03.0 (cf. the description of
the Unit Label position of the Instrument list). Newer software revisions (higher numbers) can slightly
change the view of some displays presented in the text of the manual.

SVAN 971 USER'S MANUAL_____________________________________________ _3
CONTENTS
1INTRODUCTION ............................................................................................................................. 5
1.1 SVAN 971 AS SOUND LEVEL METER &ANALYSER ................................................................................. 5
1.2 GENERAL FEATURES OF SVAN 971 ..................................................................................................... 6
1.3 ACCESSORIES INCLUDED..................................................................................................................... 6
ACCESSORIES AVAILABLE................................................................................................................. 6
1.4 SOFTWARE OPTIONS AVAILABLE.............................................................................................................
2MANUAL CONTROL OF THE INSTRUMENT ..................................................................................... 8
2.1 CONTROL PUSH-BUTTONS ON THE FRONT PANEL..................................................................................... 8
2.2 INPUT AND OUTPUT SOCKETS OF THE INSTRUMENT................................................................................ 10
3SETTING THE INSTRUMENT ......................................................................................................... 11
3.1. BASIS OF THE INSTRUMENT’S CONTROL ............................................................................................... 11
3.2. POWERING OF THE INSTRUMENT ....................................................................................................... 14
3.3. INITIAL SETUP OF THE INSTRUMENT.................................................................................................... 14
3.4. ICONS DESCRIPTION ........................................................................................................................ 15
3.5. MEMORY ORGANISATION................................................................................................................. 16
4MEASUREMENT FUNCTIONS OF THE INSTRUMENT –FUNCTION................................................. 17
4.1. MEASUREMENT FUNCTIONS OF THE INSTRUMENT –MEAS.FUNCT........................................................... 17
4.2. INSTRUMENT’S CALIBRATION –CALIBRATION ....................................................................................... 17
4.3.1. Calibration By Measurement................................................................................................ 18
4.3.2. History of calibrations - Last Cal. .......................................................................................... 19
4.3.3. Post measurement calibration –Post Cal............................................................................. 19
4.3.4. Automatic calibration –Auto Cal. ........................................................................................ 20
5MEASUREMENT PARAMETERS SETTING –MEASUREMENT ......................................................... 21
5.1 SELECTION OF MEASUREMENT PARAMETERS -GENERAL SETTINGS ........................................................... 21
5.2 MEASURE TRIGGERING PARAMETERS SELECTION –MEAS. TRIG. .............................................................. 23
5.3 SETTING PARAMETERS IN A PROFILE –PROFILES.................................................................................... 24
5.4 SETTING OF THE LOGGING FUNCTIONALITY –LOGGING........................................................................... 25
5.4.1 Settings of the Logger –Logger Set....................................................................................... 25
5.4.2 Results selection –Logger Res............................................................................................... 27
5.4.3 Logger trigger parameters setup –Logger Trig..................................................................... 27
5.4.4 Event recording setup –Event Rec. ....................................................................................... 28
5.5 MEASUREMENT RANGE SETTING –RANGE........................................................................................... 30
5.6 DEACTIVATION OF THE MICROPHONE COMPENSATION FILTER –COMP. FILTER ........................................... 30
5.7 SETTING TEN STATISTICAL LEVELS –STAT. LEV. ..................................................................................... 30
5.8 PROGRAMMING THE INSTRUMENT’S INTERNAL TIMER –TIMER................................................................ 30
5.9 DESCRIPTION OF THE EXEMPLARY TIMER FUNCTION EXECUTION ............................................................... 32
6DATA AVAILABLE ON THE DISPLAY –DISPLAY ............................................................................. 33
6.1 SELECTION OF THE MODES OF MEASUREMENT RESULTS PRESENTATION –DISP. MODES ............................... 33
6.1.1 ONE PROFILE PRESENTATION MODE.................................................................................................... 34
6.1.2 3PROFILE PRESENTATION MODE........................................................................................................ 34
6.1.3 LOGGER PRESENTATION MODE .......................................................................................................... 35
6.1.4 STATISTICS PRESENTATION MODE....................................................................................................... 36
6.1.5 FILE INFORMATION PRESENTATION MODE............................................................................................ 36
6.1.6 RUN SPLPRESENTATION MODE......................................................................................................... 36
6.2 SETTING THE SCALE OF THE PRESENTATION AND THE DISPLAY’S GRID –DISP. SCALE ..................................... 37
6.3 SELECTION OF RESULTS FOR PRESENTATION –MEAS. RES....................................................................... 37
6.4 SELECTION OF LOGGER RESULTS FOR PRESENTATION -LOGGER RES. ......................................................... 38
6.5 SETTING THE POWER SAVER-SCREEN SET............................................................................................ 38
7SAVING THE MEASUREMENT RESULTS –FILE .............................................................................. 40

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7.1 MANAGING THE FILES SAVED IN THE EXTERNAL MEMORY –FILE MANAG. .................................................. 41
7.1.1 Setting the directory for saving files –Work. Dir................................................................... 42
7.1.2 Renaming file/catalogue –Rename ...................................................................................... 42
7.1.3 Information about file/catalogue –Info................................................................................ 42
7.1.4 Deleting file/catalogue –Delete............................................................................................ 42
7.1.5 Erasion of the external memory –Erase Disk ........................................................................ 43
7.2 MANAGING THE SETUP FILES –SETUP MAN......................................................................................... 43
8SETTINGS OF THE INSTRUMENT PARAMETERS –INSTRUMENT ................................................... 44
8.1. CHOOSING SIMPLE OR ADVANCED USER INTERFACE VERSION –INTERFACE................................................. 44
8.2. CHECKING THE STATE OF THE INTERNAL BATTERY –BATTERY ................................................................... 44
8.3. SELECTION OF KEYBOARD MODES –KEYBOARD..................................................................................... 45
8.4. TRANSMISSION SPEED OF THE USB INTERFACE –USB ............................................................................ 46
8.5. SETTING THE PARAMETERS OF THE SERIAL INTERFACE -RS232 ................................................................ 46
8.6. PROGRAMMING THE INSTRUMENT’S INTERNAL REAL TIME CLOCK –RTC .................................................. 46
8.7. CHECKING SPECIFICATION OF THE INSTRUMENT -UNIT LABEL .................................................................. 47
9AUXILIARY SETTINGS –AUXILIARY SETUP.................................................................................... 48
9.1. SETTING THE LANGUAGE OF THE USER INTERFACE –LANGUAGE ............................................................... 48
9.2. RETURN TO THE FACTORY SETTINGS –FACTORY SET .............................................................................. 48
9.3. VOICE COMMENTS –COMMENTS ...................................................................................................... 49
9.4. WARNINGS SELECTION –WARNINGS.................................................................................................. 49
10 REPORTS PRINTING –REPORT ..................................................................................................... 51
11 1/1 AND 1/3 OCTAVE ANALYSER ................................................................................................. 52
11.1. SELECTION OF 1/1 OCT.OR 1/3 OCT.ANALYSIS MODE ..................................................................... 52
11.2. SELECTION OF PARAMETERS OF 1/1 OCT.AND 1/3 OCT.ANALYSIS...................................................... 53
11.3. MEASUREMENT RANGE SELECTION IN 1/1 OCTAVE AND 1/3 OCTAVE ANALYSIS -RANGE......................... 53
11.4. SETTING THE PARAMETERS OF 1/1 OCTAVE AND 1/3 OCTAVE ANALYSIS -SPECTRUM.............................. 53
11.5. ACTIVATION OF SAVING OF 1/1 AND 1/3 OCTAVE ANALYSIS RESULTS IN THE LOGGER’S FILE -LOGGER RES. . 53
11.6. DISPLAY OPTIONS IN 1/1 OCTAVE AND 1/3 OCTAVE ANALYSIS MODE................................................... 54
11.7. PRESENTATION OF 1/1 OCTAVE AND 1/3 OCTAVE ANALYSIS RESULTS .................................................. 54
11.8. SETTING THE SCALE OF THE MEASUREMENT RESULTS PRESENTATION -SCALE .......................................... 55
11.9.SETTING THE PARAMETERS OF THE SPECTRUM PRESENTATION –SPECT. VIEW......................................... 56

SVAN 971 USER'S MANUAL_____________________________________________ _5
1 INTRODUCTION
The SVAN 971 is an extremely small Type 1 IEC 61672 Sound Level
Meter (SLM) and real time 1/1 & 1/3 octave analyzer (RTA). The
instrument represents State of the Art technological design bringing
unprecedented levels of SLM and RTA integration.
The new user interface of this instrument makes measurement
configuration as easy as possible. This all makes SVAN 971 an ideal
choice for industrial hygiene noise measurements, short period
environmental noise measurements, acoustics consultancy survays,
technical engineers dealing with noise issues and general acoustics
noise measurements.
The SVAN 971 provides broad band results with all required frequency
weighting filters plus real time 1/1 octave & 1/3 octave spectra in the
auduo 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 a micro SD
memory card and can be easily downloaded to PC (with the provided
SvanPC++ software) over USB or optional RS 232 interfaces.
The instrument can be easily calibrated in the field using an acoustic
calibrator. A built-in algorithm automatically activates the calibration
process whenever an acoustic calibrator is installed on microphone and
the calibration history is saved for later inspection.
Thanks to a robust (IP65) and pocket size housing, this instrument is an
excellent tool for anyone who deals with acoustic measurements.
The SVAN 971 comes with SvanPC++ software for data download,
visualization, basic post-processing and exporting to commonly used
office software applications. Additionally, a dedicated software package
for environmental monitoring (SvanPC++_EM) is also available. This
module supports measurement data management, advanced data
processing and analysis, visualization and automated reporting.
1.1 SVAN 971 as Sound Level Meter & Analyser
noise measurements: SPL, LEQ, SEL, Lden, LEPd, Ltm3,Ltm5,LPeak,LMax, LMin, LR15,
LR60and statistics with Type 1 IEC 61672:2002 accuracy in the frequency range
10 Hz ÷20 kHz with ACO 7052E microphone (38mV/Pa, prepolarised ½” condenser
microphone);
parallel Impulse, Fast and Slow detectors for the measurements with A, B, Cand Zfrequency
filters;
total linearity measurement range 25 dBA LEQ ÷ 140 dB PEAK; is divided into two ranges:
- low range: 25 dBA LEQ ÷ 123 dB PEAK
- high range: 30 dBA LEQ ÷140 dB PEAK
1/1 Octave real-time analysis meeting Type 1 requirements of IEC 61260, 10 centre
frequencies from 31.5 Hz to 16 kHz (option) available simultaneously with three user definable
profiles for broadband measurements (SLM), time history logging and audio recording;
1/3 Octave real-time analysis meeting Type 1 requirements of IEC 61260, 31 centre
frequencies from 20 Hz to 20 kHz (option) available simultaneously with three user definable
profiles for broadband measurements (SLM), time history logging and audio recording.

SVAN 971 USER'S MANUAL_____________________________________________ _6
1.2 General features of SVAN 971
Sound Level Meter in extremely small pocket size body
Noise measurements meeting Type 1 IEC 61672-1 accuracy
Two overlapping wide measurement ranges
1/1 & 1/3 octave real-time frequency analysis
Dosimeter function for personal noise monitoring in the workplace
Audio event recording (voice recording)
Statistical analysis with up to 10 percentile values
Time-history with two logging step intervals
Automated calibration start and save
Free-field & diffuse-field measurements
Integration measurement run time programmable up to 24 h
Setup editor available with SvanPC++ software
Ready to use with predefined setups and reports in H&S mode of SvanPC++ software
Advanced modules for data processing and reporting SvanPC++_DM and SvanPC++_EM
Super contrast color OLED display
Wide range of temperature operating conditions
Protection rating IP 65 for use in the field
Very handy, light weight and robust pocket size case
Easy and friendly user interface for quick start and stop
1.3 Accessories included
7052 - microphone (38mV/Pa, prepolarised ½” condenser microphone),
SV 7052 - microphone capsule (38mV/Pa, prepolarised ½” condenser microphone),
SV 18 - built-in non removable microphone preamplifier,
SC 156 - micro USB cable,
SA 62 - micro SD memory card 4 GB capacity,
SA 22 –foam windscreen,
four AAA batteries,
CD with instruction,
SvanPC++ for Windows XP/VISTA7/ operating system.
SV 18 - Accessories available
SV 31_1 Type 1 acoustic calibrator: 1000 Hz/114 dB
SC 91/5 Extension cable for SV 18 (SVAN 971), 5 meters (for laboratory testing
purposes)
SA 72 Carrying case for SVAN 971 and accessories (waterproof)
SvanPC++_EM Environmental monitoring module for SvanPC++ (hardware key, single
license)
Software options available (firmware)
SVAN 971 Type 1 Sound Level Meter including time history logging
SVAN 971PACK Type 1 Sound Level Meter including time history logging, 1/1 & 1/3 octave
analysis
SV 971_1 1/1 octave analysis option
SV 971_3 1/1 & 1/3 octave analysis option
SV 971_15 Audio events recording option (time waveform recording as wav format files)

SVAN 971 USER'S MANUAL_____________________________________________ _7
SvanPC++ PC Software for viewing and exporting data, USB drivers (MS Windows XP,
Vista, Windows 7)
Notice: The software options listed above can be purchased at any time, as only the
entry of a special unlock code is required for their activation.

SVAN 971 USER'S MANUAL_____________________________________________ _8
2 MANUAL CONTROL OF THE INSTRUMENT
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 push-buttons of the instrument has been reduced to eight for ease of use and
convenience.
2.1 Control push-buttons on the front panel
The following control push-buttons are located on the front panel of the
instrument:
<ESC>, (<P/S>),
<ENTER>,(<Menu>),
<>,
<>,
<>,
<>.
<Shift>,
<Start/Stop>,
The action given in (...)brackets denotes the second push-button function
which is available after pressing it in conjunction (or in sequence) with the
<Shift> push-button.
<Shift>
The second function of a push-button (P/S and Menu) can be used when the
<Shift> push-button is pressed together with <ESC> or <Enter>. This push-
button can be used in two different ways:
as Direct like in a computer keyboard (e.g. while typing the filename);
both <Shift> and the second push-button must be pressed
simultaneously;
as 2nd Function; this push-button can be pressed and released before
pressing the second push-button.
Notice: The simultaneously pressing the <Shift> and <Start/Stop> push-buttons
switches the instrument on or off.
<Start/Stop>
This push-button enables the user to start and stop the measurement process.
<ENTER>
This push-button enables the user to enter the selected position shown on the
screen Menu list, to confirm selected settings or to switch the views of the result
presentation modes. Some additional functions of this push-button will be
described in the following chapters of this manual.
(<Menu>)
This push-button (pressed together with the <Shift>) enables the user to enter
the main list containing six sub-lists: Function, Measurement, Display, File,
Instrument, Aux. Setup and Report. Each of the mentioned above sub-lists
consists of other sub-lists, elements and data windows. These main sub-lists will
be described in detail in the following chapters of the manual. Double pressing
the <Menu> push-button enters the list containing the last eight opened sub-lists.

SVAN 971 USER'S MANUAL_____________________________________________ _9
It often speeds up the control of the instrument as the user has faster access to
the frequently used sub-lists for easy navigation.
<ESC>
This push-button closes the control lists, sub-lists or windows. It acts in an
opposite way to the <ENTER> push-button. When the window is closed after
pressing the <ESC> push-button, any changes just made are ignored.
(<P/S>)
This push-button enables the user to pause or break the measurement process
temporarily. If there is no current running measurement in progress this push-
button opens the Setup Manager menu.
<>, <>
These push-buttons enable the user, in particular, to:
select the column in a multi column parameter list;
select the parameters value in an active position (e.g. filter Z, A or C,
Integration period: 1s, 2s, 3s, … etc.);
control the cursor in Spectrum, Logger and Statistics modes of result
presentation;
select the position of the character in text edition screens;
speed up the changing of numerical values of the parameters when pressed
and held.
(<>, <>)
The <>, <>push-buttons pressed in conjunction (or in sequence) with
<Shift> enable theuser, in particular, to:
select the parameters value in an active position (e.g. filter Z, Aor C,
Integration period: 1s, 2s, 3s, … etc.);

<>, <>
The <>, <> push-buttons enable the user, in particular, to:
select lines in the list;
select the correct character from the list in the text editing mode;
change the presentation mode of the results.
(<>, <>)
The <>, <> push-buttons pressed in conjunction (or in sequence) with the
<Shift> enable the user, in particular, to:
change the current profile in the measurement display mode,
change the relationship between the Y-axis and X-axis of all plots presented
on the screen,
program the Real Time Clock (RTC) and delayed run Timer.
< ♪>
The simultaneously pressing the <>, <>push buttons initiates recording of a
voice signal as a comment (see. Paragraph 9.3 “Voice comments”).

SVAN 971 USER'S MANUAL_____________________________________________ _10
2.2 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 SV 18 microphone preamplifier
has a specially designed matching plug with a locking screw
to secure the preamplifier to the meter body. After plugging in
the preamplifier to the measurement input, the screw should
be tightened to light resistance only. Do not over tighten this
connector. It is not necessary to remove this preamplifier
from the top of the instrument unless the meter is in a
calibration laboratory as it is always used close coupled to
the meter body. The full description of the signals connected
to the sockets 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.
The USB Device 2.0 interface is the serial interface working with 12 MHz clock in the full speed mode
and with 480MHz in the high speed mode, which is a default mode of the instrument. Thanks to its
speed, it is widely used in all PCs. In the instrument, the standard 4-pin socket is used and described
in detail in Appendix C.
Notice: Switch the power off before connecting the instrument to any other device (e.g.
a printer or a Personal Computer) or fitting the microphone capsule.

SVAN 971 USER'S MANUAL_____________________________________________ _11
3 SETTING THE INSTRUMENT
In order to perform measurements using the instrument the user only has to plug-in the preamplifier
with the microphone already screwed on and to switch the power on by means of the <Shift> and
<Start/Stop> push-buttons at the same time.
3.1. Basis of the instrument’s control
The instrument is controlled by means of eight push-buttons on the keypad. Using these push-buttons
one can access all available functions and change the value of all available parameters. The functions
are placed in a system of lists and sub-lists shown on the high contrast graphic colour display.
The instrument's menu consists of different type of windows, which include: main menu list, sub-menu
list, option list, parameter list, text editor window, information window and file manager window with file
command list.
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. window of the Instrument
menu. The Simple mode defines basic instrument
functions, while the Advanced mode defines the full
scope of available functions. Many windows can
therefore have different view depending on the selected
operational mode.
Start/Stop mode limits the menu to only one User Inter.
window from Menu and measurement windows.
<EN>
Main menu
The main list contains the headers of seven lists, which also contain sub-lists or
positions (elements). The main list is opened after pressing the <Menu>
(<Shift> and <Enter>) push-button. This list contains the following lists:
Function, Measurement, Display, File, Instrument, Aux. Setup and Report.
Recent Items list
The double pressing the <Menu> push-button opens the list of recently
accessed menu items. This enables the user to access the most frequently used
lists quickly, without the necessity of passing through the whole menu path.
Position selection
The desired position in menu list is selected using the
<>or <>push-buttons.
<>

SVAN 971 USER'S MANUAL_____________________________________________ _12
Entering position
After the selection of the desired position in the menu
list, the user has to press the <ENTER> push-button in
order to select and enter it. After this operation a new
sub-menu, option list, parameter list or information
window appears on the display.
<ENT>
List of parameters
The parameter list contains parameters for which the user may select the value
from the available range. The next press of the <ENTER> push-button enables
the user to access the sub-lists as mentioned above.
The desired position in a list is accessed after pressing the <>or <>
push-button.
The change of the value in a selected position is performed by the <>or
<>push-buttons (or pressed together with the <Shift> one).
Option list
The option list consists of different options, from which only one may be
selected. The selection of the option is performed in the following way. The user
has to highlight the desired option by means of the <>or <>push-buttons
and then press <ENTER>. This option becomes active and the list is closed.
When the user re-enters this list again, the last selected option will be marked.
If the parameter has a numerical value the user may speed up selection by pressing the <>or <>
push-buttons (or pressed together with the <Shift> one) for longer than 2 seconds. In this case, the
parameter starts to change automatically until the user releases the pressed buttons.
The user may change the numerical parameter value with a larger step (usually 10, 20) by means of
the <>or <>push-buttons pressed together with <Shift>.
Matrix of parameters
When the list of parameters consists of more than one column the user may
change:
column by means of <>or <>
line in the column by means of <>or <>
value in a selected position by means of <>or <>with <Shift>
value in a line by means of <>or <> with <Shift>
value in a column, if the cursor is on one of Profile positions, by means of <>
or <>with <Shift>
value in a matrix, if the cursor is on one of Profile positions, by means of <>
or <> with <Shift>

SVAN 971 USER'S MANUAL_____________________________________________ _13
Complex parameters
Some parameters like Start Hour, Start Day etc. are
complex (consisting of more than one value field). The
selection of values for such parameters is performed in a
special window, which is opened with the <>or <>
push-buttons. In the special, window the value is selected
with the <>, <> or <>, <> push-buttons and then
is confirmed by pressing <ENTER>.
<>
In all cases the <ENTER> push-button is used for confirmation of the selection in a position and for
closing the opened sub-list. The sub-list is closed, ignoring any changes made in thr list by pressing
the <ESC> push-button.
Information window
Some windows inform the user about the state of the instrument, available
memory, not existing files or loggers, standards fulfilled by the unit, etc. In order
to scroll through the list, the user has to use the <>or <>push-button. In
order to close such a window, the user has to press the <ESC> push-button.
Text editing window
There are also windows in which the user may edit some text (i.e. the name of
the file, the header for the printed reports from the measurements). This window
contains help information to guide the user on how to edit the text. The character
which is displayed inversely may be edited.
One can select the position of the character in the edited text using the <>,
<> push-buttons.
The available ASCII characters can be changed using the <>or <>
push-button. The subsequent digits, underline, upper case letters and space
appear on the display in the inversely displayed position after each press of
the push-buttons mentioned above.
One can insert or delete the position in the edited text using the <>, <>
push-buttons pressed together with <Shift>.
<>
Help information
In most windows the last line or several lines contain help information. It informs
the user how to select or modify the parameter’s value, change the character in
the text line etc. (Delete: Sh<,Insert: Sh>)
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 frame with black background, not yellow). For
example, if Logger (path: <Menu> / Measurement / Logging / Logger Set.) is
switched off the other Logging positions are not active!

SVAN 971 USER'S MANUAL_____________________________________________ _14
3.2. Powering of the instrument
The SVAN 971can 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 12 h (6.0 V / 1.6 Ah). Instead of the ordinary alkaline cells,
four AAA rechargeable batteries can be used (a separate external charger is required for
charging them). In this case, using the best NiMH type, the operation time can be increased
up to 16 h (4.8 V / 2.6 Ah)
USB interface –100 mA HUB
For each of the three kinds of possible power source there is a different view presented in the Battery
window of the Instrument list.
When the instrument is powered from its internal batteries, the “Battery” icon is presented on the top
line of the display. When voltage of the batteries is too low for reliable measurements, the icon is red
or 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. To change the batteries the user has to switch off
the instrument, take off the black bottom cover of the instrument, unscrew battery cover, slide the
battery tubes out, change the batteries taking care to observe the correct polarity and reassemble the
parts of the instrument. The fully charged set of 4 batteries ensures more than 12 hours of continuous
operation of the instrument (with Dim LCD switched on). The battery condition can be checked by
means of the Battery function. It is also presented continuously on the top line of the display by
means of the “Battery” icon.
When there is a connection to the USB interface (USB Device socket is connected by means of the
SC 156 cable to a PC), the “Computer” icon is presented on the top of the display and in the Battery
window, there is the USB Power: Voltage: 5.00V message.
Notice: In the case when “Battery” icon is red, it is strongly recommended to use an
external power adapter or USB 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. The settings of power saver function (Dim Mode) may be selected in the Screen Set.
window (path: <Menu> / Display / Screen Set.).
3.3. Initial Setup of the instrument
Switching the instrument on
To switch the power on the user should
press the <Shift> and <Start/Stop> push-
buttons at the same time. The instrument
goes the self-test routine after switching on
(in this time the manufacturer's logo and the
name of the instrument is displayed) and
then it enters the basic SPL view mode.
Starting measurement
To start the measurements the user has to press the <Start/Stop> push-button.
The results of the measurement are displayed in the last used result’s display
view mode. As an example one profile mode is displayed.

SVAN 971 USER'S MANUAL_____________________________________________ _15
One profile mode is always available for most Functions of the instrument. The results of the
measurements can also be presented in other display modes, which can be switch on and off and
adjusted to the user’s needs.
Default Profile settings for Sound measurements:
Profile 1 - Aweighting filter (Filter(1)=A), Fast for the LEQ detector
(Detector(1)=Fast);
Profile 2 - Cweighting filter (Filter(2)=C), Fast for the LEQ detector
(Detector(2)=Fast);
Profile 3 - Z weighting filter (Filter(3)=Z), Fast for the detector
(Detector(3)=Fast);
The user can change all the above mentioned settings using Profiles sub-list of the Measurement list.
The instrument remembers all changes for the next time it is used. Return to the default settings (set
up by the manufacturer) is possible after the selection of the Factory Set. position available in the
Aux. Setup list.
3.4. Icons description
Description of the instrument state
Additional information about the instrument’s state is given by means of the row
of icons visible in the top of the display.
The real time clock (RTC) is also displayed in the same line together with icons.
The meanings of the icons are as follows:
“play” icon is displayed, when the
measurement is started by the
instrument.
.
“tone” icon is displayed during wave
recording and event recording.
“stop” icon is displayed when the
measurement is stopped by the
instrument.
“Internal memory” icon is displayed
when there is no external SD memory
card inserted.
“pause” icon is displayed when the
measurement is paused.
“SD Card” icon is displayed when the
external SD card memory is connected.
“computer” icon is displayed when
there is USB connection with the PC.
“Trigger Level - ” icon is displayed when
the trigger condition is set up to „Level -”.
The icon appears alternately with the
„play” icon.
“curve” icon is presented when the
current measurement results are logged
into the instrument’s logger file.
“Trigger Level + “ icon is displayed
when the trigger condition is set up to
„Level +”. The icon appears alternately
with the „play” icon.
“RS232” icon is displayed when the
RS232 port is activated.
“Trigger Slope +” icon is displayed
when the trigger condition is set up to
„Slope+”.

SVAN 971 USER'S MANUAL_____________________________________________ _16
“Shift” icon is displayed when the
<Shift> push-button is pressed.
“Trigger Slope –“ icon is displayed when
the trigger condition is set up to „Slope-”
“clock” icon is displayed when the
timer is On. It is active when the
instrument is waiting for the
measurement start up to occur. When
the measurement start up is close, the
icon changes its colour to green and
starts to blink.
“battery” icon is displayed when the
instrument is powered from the internal
batteries. Icon corresponds to the status
of the batteries (three, two, one or none
vertical bars inside the icon). When
voltage of batteries is too low, the icon
becomes red.
3.5. Memory organisation
All available measurement results and settings can be stored in the external
Memory (micro SD Card) as files.
The SD Card external memory is activated automatically after insertion of
the card. The presence of an SD Card is signalled by the memory icon with
SD letters at the top left hand corner of the display.
- SD card is
inserted
- no SD card
File manager
The File Manag. is used for checking the contents of the
memory and operation on files and catalogues such as:
rename, delete, display information and also to create
new catalogues.
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The SD Card memory is organised as standard memory
with directories and sub-directories. It is possible to
create and to delete the directory structure.
The content of each memory file type can be checked
with the help of the File Manag. function of the File
menu.
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Files are saved automatically to the SD card. To enable automatic saving several conditions should be
fulfilled:
1. SD card should be inserted and there should be enough space on it.
2. The Logger (path: <Menu> / Measurement / Logging / Logger Set.) should be switched on.
3. The selected should be defined with a unique name.
The files are saved in the catalogue, which was set up as the working catalogue. The default working
catalogue, after using Factory Set function, is called SVANTEK.
The Setup files can be stored by means of Setup Man. list or by pressing <Shift> with <ESC> push-
buttons from the measurement screen, when a measurement is not being made. All Setup files are
stored in the default catalogue SETUP on the SD disk.

SVAN 971 USER'S MANUAL_____________________________________________ _17
4 MEASUREMENT FUNCTIONS OF THE INSTRUMENT –Function
In order to select the Function list one has to press the
<Menu> push-button, select the Function text and press
<ENTER>. The Function list contains two elements:
Meas. Funct and Calibration.
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4.1. Measurement functions of the instrument –Meas. Funct
The main function of the instrument is the measurement of sound pressure level (Lev. Met.). The
Sound Level Meter (SLM) function provides the user with functions meeting the standard
IEC 61672:2002 for Type 1 accuracy. The instrument can also be used for medium to long-term
acoustic monitoring using the huge capacity data logger in which all the measurement results are
stored.
The user may also use 1/1 and 1/3 real time octave band analysis and dose meter (dosimeter)
functions. These functions broaden the main Level Meter functions of the instrument, because 1/1 and
1/3 analysis as well as dose meter measurements are performed together with all calculations of the
broadband Level Meter functions.
In order to select the required function the user has to
enter the Meas. Funct list. After entering the Meas. Funct
list, the set of the available functions appears on the
display: Lev. Met., 1/1 Oct., 1/3 Oct., Dose Met. and
Run. LEQ. The currently active function is highlighted.
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Notice: The type of measurement function and the measurement mode is not displayed
on the screen, so the user should remember the currently selected function!
Optional functions that broaden the applications of the instrument can be easily installed. These
options can be provided initially by the manufacturer or can be purchased at a later time when
required.
Notice: It is not possible to change the measurement function during a measurement run.
In this case, the instrument displays for about 3 seconds the text: “Measurement in
Progress”. In order to change the mode of the instrument the current measurement in
progress must be stopped!
4.2. Instrument’s calibration – Calibration
The instrument is factory calibrated with the supplied microphone for the standard environmental
conditions. Because the microphone sensitivity is a function of the temperature, ambient pressure and
humidity, when the absolute sound pressure level value is important, the absolute calibration of the
measurement channel should be performed. In order to select the calibration function the user has to
enter the Calibration sub-list.
The instrument performs the acoustic calibration automatically, when the calibrator is placed over the
microphone. The calibrator levelis automatically detected and the calibration proceedure is started.

SVAN 971 USER'S MANUAL_____________________________________________ _18
The user simply has to press <Enter> to confirm the calibration results. A sound measurement cannot
be in progress while the calibration is being performed.
The Calibration sub-list consists of four positions:
By Measure., which may be used to perform the actual
calibration, Last Cal., which contains the list of calibration
measurements performed earlier and the results obtained,
Post Cal., which enables the user to perform additional
calibration after the measurement session is over and add
the results to the saved file and Auto Cal., which enables
the user to switch on the auto calibration function.
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Notice: It is advised to perform an acoustic calibration of the instrument each time before
the measurements begin. A sinle calibration at the start of each day is usually sufficient
for most regulations.
Notice: The calibration factor is always added to the results in the Lev. Met., 1/1 Oct.,
1/3 Oct., Dose Met.
Notice: The manufacturers recommended factory calibration interval is every 12 months
for this instrument to be confident in its continuing accuracy and compliance with the
international specifications. Please contact your local Svantek distributor for further
details.
4.3.1. Calibration By Measurement
To calibrate the instrument:
1. Set the actual calibration level of the calibrator to be used in the position
Cal. Level and press <Enter> or <Start> push-button.
2. Attach the acoustic calibrator, SV 30A (or equivalent 114 dB / 1000 Hz)
carefully over the microphone of the instrument. The presence of the calibrator
will be detected automatically.
Notice: It is also possible to use an electro-mechanical pistonphone, which generates the
signal (ca 124 dB) or different type of acoustic calibrator dedicated for ½” microphones. In
any case, before starting the calibration measurement, the user has to set the level of the
signal generated by the given calibrator (Cal. Level position of By Measurement sub-
list), which is stated in the calibration certificate of the unit (the value of the Cal. Level set
by the manufacturer of SVAN 971 is equal to 114 dB). It is also necessary to switch the
instrument Range to the High level setting..
3. Switch on the calibrator and wait ca 30 seconds for the tone to stabilise
before starting the calibration measurement.
4. Start the calibration measurement by pressing the <Start/Stop> push-
button.

SVAN 971 USER'S MANUAL_____________________________________________ _19
The calibration measurement time is set to
1 second with 5 seconds delay and stops
until the same results are obtain 3 times in
a rowDuring the calibration measurement
the <ESC> and <Pause> push-buttons do
not operate but it is possible to stop the
measurement using the <Start/Stop>
button.
Waiting for the start of the measurements the Delay is counted down on the display. After the end of
the measurement, its result is displayed on the display in the bottom line.
It is recommended to repeat the calibration measurement a few times. The obtained results should be
almost the same (with 0.1 dB difference). The reasons for the unstable results are as follows:
the calibrator is not properly attached to the instrument,
there are external acoustic disturbances such as high noise levels close by,
the calibrator or the measurement channel (the microphone, the preamplifier or the
instrument itself) are damaged.
Notice: During the calibration measurement, the external disturbances (acoustic noise or
vibrations) should not exceed a value of 100 dB (when using a calibrator that generates a
level of 114 dB).
5. Press the <ENTER> push-button in order to accept the
measurement result.
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Notice: To quit the calibration procedure without saving the calibration factor press
<ESC>.
4.3.2. History of calibrations - Last Cal.
The Last Calibr window displays up to ten last calibration
records and positions, which clears all calibration records
(Clear Hist.).
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The user can clear all calibrations records in the history. In order to do this the
user has to choose the position Clear Hist. and press <ENTER>.
The instrument requests confirmation of the selected operation. The next press
of the <ENTER> push-button, when the No option is selected, closes the
window and returns to the Calibration sub-list.
4.3.3. Post measurement calibration –Post Cal.

SVAN 971 USER'S MANUAL_____________________________________________ _20
Sometimes it is required to perform so called post-
calibration of the instrument. Position Post Cal. enables
the user to perform additional calibration after a
measurement session and add the results to the file saved
in the memory. In the opened window, there are three
options for saving results: not to save (Off), save in the
last file (Last File) or save in the files which will be
created after last calibration (After Cal.).
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4.3.4. Automatic calibration –Auto Cal.
Position Auto Cal. enables the user to perform automatic
calibration when the sound calibrator is attached. In this
case the window Calibration will appear automatically. If
Auto Cal. is switched off, the user should enter this
window through the Menu.
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