Kimo DB 200 User manual

Sound level meter
DB 200

Table des matières
1 Introduction...........................................................................................................................................4
2 Vocabulary............................................................................................................................................5
3 Presentation of the sound level meter.................................................................................................6
3.1 Overview.......................................................................................................................................6
3.2 Presentation of the screen keyboard group.................................................................................7
4 Settings.................................................................................................................................................8
4.1 Configuration.................................................................................................................................8
4.2 I/O.................................................................................................................................................8
4.3 Contrast backlight.......................................................................................................................9
4.4 Autonomy......................................................................................................................................9
4.5 Instrument.....................................................................................................................................9
4.6 About.............................................................................................................................................9
5 Make some measurements................................................................................................................10
5.1 Conventional sound level meter function....................................................................................10
5.1.1 Adjustment prior to measurement.......................................................................................10
5.1.2 Launch the measurement....................................................................................................10
5.1.3 During measurement...........................................................................................................10
5.2 Conventional sound level meter with storage function...............................................................11
5.2.1 Adjustment prior to measurement........................................................................................11
5.2.2 Launch the measurement....................................................................................................11
5.2.3 During measurement...........................................................................................................11
5.2.4 Stop the measurement........................................................................................................12
5.2.5 Store data............................................................................................................................12
5.3 Classical sound level meter and averager integrator function...................................................13
5.3.1 Adjustment prior to measurement.......................................................................................13
5.3.2 Launch the measurement....................................................................................................13
5.3.3 During measurement...........................................................................................................13
5.3.4 Stop the measurement........................................................................................................14
5.3.5 Store data............................................................................................................................14
5.4 Sound level meter and averager integrator with storage function..............................................15
5.4.1 Adjustment prior to measurement.......................................................................................15
5.4.2 Launch the measurement....................................................................................................15
5.4.3 During measurement...........................................................................................................15
5.4.4 Stop the measurement........................................................................................................16
5.4.5 Store data............................................................................................................................16
5.5 Calculate two sound sources......................................................................................................17
5.5.1 Adjustment prior to measurement.......................................................................................17
5.5.2 Make calculation of two sound sources...............................................................................17
5.5.3 Store data............................................................................................................................18
5.6 Determine a sound source among two.......................................................................................18
5.6.1 Adjustment prior to measurement.......................................................................................19
5.6.2 Make the measurement.......................................................................................................19
5.6.3 Store data............................................................................................................................19
5.7 Sound level meter in I/O mode...................................................................................................20
5.7.1 Launch a measurement in I/O mode...................................................................................20
6 Read the stored files..........................................................................................................................21
6.1 Access to files.............................................................................................................................21
6.2 Read all data file.........................................................................................................................21
6.2.1 L St mode file.......................................................................................................................21
6.2.2 L Leq mode file....................................................................................................................22
6.2.3 Leq St mode file...................................................................................................................22
6.2.4 S1+S2 mode file..................................................................................................................23
7 Transfer files to a PC..........................................................................................................................24
8 Reset memory....................................................................................................................................25

9 Directions for use and sound level meter maintenance.....................................................................26
9.1 Use warnings..............................................................................................................................26
9.2 Directions for use........................................................................................................................26
9.3 Calibration...................................................................................................................................26
9.4 Maintenance...............................................................................................................................27
9.5 Regular checking........................................................................................................................27
9.6 Change batteries.........................................................................................................................27
9.7 Replace the batteries with a battery pack...................................................................................27
9.8 Load the battery..........................................................................................................................28
9.9 AC adapter..................................................................................................................................28
10 Running informations.......................................................................................................................29
10.1 Over range................................................................................................................................29
10.2 Power........................................................................................................................................29
11 Technical features.............................................................................................................................30
11.1 Microphone................................................................................................................................30
11.1.1 Sheet..................................................................................................................................30
11.1.2 Frequency response type – reference direction of the sound level meter........................30
11.2 Windscreen...............................................................................................................................30
11.3 Measured and displayed values...............................................................................................31
11.4 A – C – Z weightings and free field response...........................................................................31
11.5 Metrology...................................................................................................................................32
11.5.1 Main features.....................................................................................................................32
11.6 Plugs and connections..............................................................................................................32
11.6.1 I/O Interface.......................................................................................................................33
11.6.2 Transfer plug / load / mains voltage adaptor.....................................................................33
11.7 Memory and storage autonomy................................................................................................33
11.8 Power and storage autonomy...................................................................................................34
12 Packaging and accessories.............................................................................................................35
12.1 Supplied with.............................................................................................................................35
12.2 Optional.....................................................................................................................................35
13 LDB200 software..............................................................................................................................36

1 Introduction
The DB200 sound level meter is an acoustic measurement instrument with main features of a conventional and integrating-averaging
sound level meter.
With its memory, DB200 sound level meter stores measurement datasets. Then they are transferred to a computer and processed
through LDB200 software.
According to international standards, sound level meter calculates and displays on its graphical backlight LC -screen values used for a
fast and complete study of the noise environment.
To simplify and make nice its use, 5 measurement modes have been preselected :
•Mode 1 : Conventional sound level meter (See p.10)
•Mode 2 : Conventional sound level meter with storage (See p. 11)
•Mode 3 : Conventional and integrating-averaging sound level meter (See p. 13)
•Mode 4 : Integrating-averaging sound level meter with storage (See p. 15)
•Mode 5 : Sound level meter « calculator » of two sound sources (See p 17)
In the different modes, in addition to measured values, the sound level meter can display :
•results for a better definition of the acoustic environment :
Maximum and minimum values, peak values, statistics distribution of measured levels
•Indications required for the proper validation of the measurement :
Presence and percentage of overload input stages, duration of the measurement
•other information :
attery autonomy, remaining measuring capacity
The sound level meter also communicates with an automaton through I / O plugs :
•0-10 V C analog output
•Control bit activated as per pre-programmed threshold
•Launching and stop of measurement by the automaton
Introduction 4

2 Vocabulary
The terms and abbreviations listed below will be used throughout this user manual.
L : represents the measurement mode: conventional sound level meter
L-St : represents the measurement mode : conventional sound level meter with storage function. The sound pressure level is stored into the
memory at a sampling rate which is defined and planned.
L-Leq : represents the measurement mode : conventional and integrating-averaging. Values are measured simultaneously.
L-St : represents the measurement mode : integrating-averaging sound level meter with storage function The equivalent continuous sound level on
the logging time ( I) is stored into the memory.
S1+S2 : denomination for measuring or calculating the levels of 2 sound sources.
LXeq : X-weighted equivalent continuous sound level on the logging time or on the total time of the measurement.
LXeqM : Maximum X-weighted equivalent continuous sound level on the logging time, on the total time of the measurement.
LXeqm : Minimum X-weighted equivalent continuous sound level on the logging time, on the total time of the measurement.
LXE : X-weighted sound exposure level.
LXY : X-weighted acoustic pressure level ; time weighting : Y
LXYmax : Maximum X-weighted sound pressure level ; time weighting : Y
LXYmin : Minimum X-weighted sound pressure level ; time weighting : Y
LUpK : U-weighted peak sound level.
Echant. : time between two successive storages of the sound pressure level into the memory, also called : Sampling rate.
DI : Programmable logging time for the calculation of the equivalent continuous sound level stored into the memory, also called : elementary
integration time.
X : generic marking for frequency weightings, A – C or Z standardized (L, Leq, LE values)
U : generic marking for frequency weightings, C or Z standardized (Lpk values)
Y : generic marking for time weightings with : « F » for Fast, « S » for Slow or « I » for Impulse.
Man : manual mode of measurement launching
I/O : Launching mode of the measurement controlled by I/O plugs.
SXX : order number of the measurement sessions. Limited to 25.
RST : reset of calculations of maximum or minimum values memorized – erasing of measurement session or of the whole memory.
Sto. : storage of measurement session into the memory.
S1 : name for measuring or calculating the equivalent continuous sound level of a first sound source.
S2 : name for measuring or calculating the equivalent continuous sound level of a second sound source.
S1+S2 : name for measuring or calculating the equivalent continuous sound level of the two sound sources.
00/00:00:00 : format of the measurement time in ays/hours:minutes:seconds
00/00:00 : format of the measurement time in ays/hours:minutes
00:00:00 : format of the measurement time in ays/hours:minutes:seconds or format of the current time
18/11 : format of date
00:00 : format of current time in hours/minutes
Pond. : A, C or Z frequency weightings
Cte : time weighting or time constant : Fast – Slow - Impulse
S/S : integration time controlled in Manuel mode : Start/Stop
C.Cl : free field correction term in calibration mode.
Corr. : corrective term of nominal benefit in calibration mode.
L01 – L10 – L50 – L90 – L95 : Normalised statistics distribution, used in environmental studies
5 Vocabulary

3 Presentation of the sound level meter
3.1 Overview
The back of the instrument contains a battery compartment door, a threaded hole for mounting on a tripod, a location for the nameplate
and a location for the calibration label.
Presentation of the sound level meter 6
Preamplifier
Graphical backlighted LCD-
screen : 240 x 160 pixels.
It displays both reserved areas
for the setting of the
measurement and areas for
results presentation.
Monochrome, with 16 grey/blue
levels, it participates to the
intuitive manipulation of the
sound level meter .
ottom part : protected by a flexible and removable
rubber breastplate, it contains all input/output and
external power plugs.
Windscreen : essential to
reduce the noise induced by air
currents.
Keyboard : it consists of only 8
sensitive keys. Its ergonomy allows
an immediate and easy use of the
sound level meter.
Electret microphone
Severable from the preamplifier
(inside the windscreen).

3.2 Presentation of the screen-keyboard group
The screen/keyboard group gives to the instrument a modern ergonomy. It mainly participates to the quick
familiarization of the sound level meter.
A press, a touch or a very light finger slipped on keyboard icon is enough to trigger the corresponding action of
the sensitive key.
The measurement configuration is made by moving a reversed video cursor in reserved areas, then by
choosing the concerned parameter or function.
For instance :
•Time weighting choice : Slow, fast or Impulse.
•Frequency weighting choice : A, C or Z.
•Measurement mode choice : L, L-St, L-Leq or Leq-St.
Reserved areas appear according to two 3 type formats :
•Inner shadow to the frame : simulates a shifted back area in which parameters can be modified or displayed
measurement results.
•External shadow to the frame : simulates a shifted forward area in which different propositions of the menu
can be chosen to go to an other configuration or validation screen.
7 Presentation of the sound level meter
A push on each arrow moves the cursor on the horizontal left-right axis.
A push on each arrow moves the cursor on the vertical up-down axis.
scrolling knob key : increases or decreases suggestions in the area according the principle of front or back circular
permutation. The finger must slide from an arrow to the other one, simulating a scroll wheel action.
From the bottom to the top to increase or from the bottom to the top to back to the previous proposal.
Validate a suggestion or an action to lead present in an outer shaded frame.
Go to the main menu to return to the previous screen.
Exit a menu screen to return to the previous screen.
Launch a measurement, then pause it if necessary .
Finally stop measurement
Enable-disable the backlight.
On-Off

4 Settings
From the key a screen lists the different settings or informations about the instrument.
To have access to one of those screens, scroll with the scrolling knob key and validate with OK key.
To quit each screen and back to main menu, use key.
.1 Configuration
This screen allows configuration for some functions. To have access to those functions :
Press key then choose CONFIGURATION with the scrolling knob key and OK key to validate.
From this screen, use arrow keys to move the cursor in the desired area and modify with the scrolling knob key the proposition. Various
parameters to adjust are :
•Run : systematic measurement mode when starting the device : L, L-St, L-Leq, Leq-St or S1+S2.
•Lang. : user language : French or English.
•Bip : the presence or absence of tone when pressing on the keyboard. The beep disappears by itself if it interferes with the
measurement.
•ate / Hour : Set date and time
To return to main screen, press .
.2 I/O
The I/O input/output allows to connect 2.5 mm jacks. It is located at the bottom of the unit behind the rubber breastplate.
I/O 1 corresponds to input for the launch and stop measurement from an industrial controller and is for measurement modes L-St, L-
Leq and Leq-St. Launching of the measurement is made for a continuous high level and stopping the measurement is made for a
continuous low level.
I / O 1 also corresponds to the detection output compared to a preset sound level and is for all modes of measurement. A high level
appears in output when the value of the acoustic pressure level reaches and exceeds a certain value.
For this type of output following items must be configured :
•The level type: choose L, Leq or LPK depending on the mode of measurement.
Settings 8
Menu
Menu Configuration

•Programming with scrolling knob key the desired level of detection by 1 dB steps.
•Set a timer for maintaining the continuous signal detection after sub-overshoot sound level (from 1s to 10s by 1s pitch).
I/O 2 : C continuous analogue output : 0-10V for connection to a recorder or industrial controller.
.3 Contrast - backlight
To optimize reading of the display:
➢Position the cursor on Cont. and adjust the contrast by choosing with scrolling knob key a level
of 1 to 7.
➢Position the cursor on Retro. and adjust backlight by choosing with scrolling knob key a level of
1 to 3.
. Autonomy
Autonomy provides information on the remaining memory capacity and allows time measurement according to the
chosen method of measurement and acquisition speed measurement (logging time or sampling rate).
➢Select measurement mode among L-St or Leq-St.
➢Specify the sampling rate or logging time according to the method of measurement used.
The measurement time is calculated automatically based on the remaining memory capacity. It is immediately compared to the
remaining capacity of the power system : batteries, battery or AC adapter.
A warning appears in case of incompatibility between measurement time and power capacity.
.5 Instrument
This screen reminds main components of the sound level meter :
•microphone and its serial number
•sound level meter housing
•version number of the firmware.
.6 About
This screen shows the various European standards and the accuracy class of the instrument.
It also specifies the date of the last checking and recalled next.
9 Settings
Menu I/O features
Contrast
Backlight
Instrument
Menu Autonomy Autonomy
About

5 Make some measurements
5.1 Conventional sound level meter function
The sound level meter processes the signal and displays sound pressure and at the same time following informations :
•Temporally weighted sound pressure level.
•Maximum and minimum values of levels on the measurement time.
•Level of maximum peak sound level on the measurement time.
5.1.1 Adjustment prior to measurement
1 – Select L mode : move the cursor with arrow keys to 1 and select 'L' with the scrolling knob key.
2 – Select the weighting frequency and the time weighting.
For each weighting frequency, the sound level meter proposes the measurement according to three time
weightings : Fast (F) – Slow (S) – Impulse (I). Possible choices are :
A frequency weighting : LAF – LAS – LAI
C frequency weighting : LCF – LCS – LCI
Z frequency weighting : LZF – LZS – LZI
Place the cursor with arrow key on the area 2 and select with scrolling knob identified measurement
criteria among the possibilities listed above.
3 – Select the weighting frequency of peak level of sound pressure : move the cursor with the arrows
to 3 and select C or Z with the scrolling knob key.
5.1.2 Launch the measurement
The measurement is immediate, yet it is interrupted and reset with each change.
5.1.3 During measurement
uring the measurement, two actions are possible :
•Reset memorized levels.
•Fix the measurement thanks to Pause function.
To reset all the values :
➢Press OK icon, RAZ function is activated and concerns :
•LAF maximum and minimum levels
•Value of the maximum peak pressure
•Informations about overload
Pause function allows to stop the current measurement to avoid an unwanted event or to make a manual
record of results.
Press icon to stop the measurement then press it again to resume measuring.
Note : When the sound level meter is paused, no action is specified in the "Peak" at the top of the
screen.
Make some measurements 10
1
2
3
Procedure
RAZ activation
Pause