Tenmars ST-109R User manual

ST-109R
Integrating Sound Level Meter
User’s Manual
HB2ST109R001

Contents
1Introduction.......................................................1
2Accessories.......................................................1
3Safety Precaution..............................................1
4Instrument Description ......................................2
5Operation..........................................................3
5.1 Backlight Button.........................................4
5.2 Start/Pause Measuring...............................4
5.3 Data Hold:..................................................4
5.4 Single Record/ Datalogger Reading ...........4
5.5 Product Setup ............................................5
5.6 Integrating Time Setup...............................5
5.7 Auto Power Off...........................................5
5.8 Analog/Communication Output Interface....6
5.9 Record Data Delete/Back-up......................6
5.10 94dB Calibrate ...........................................7
5.11 Microphone Connection Inter-face..............7
5.12 Microphone Extension Test........................8
5.13 Sensitivity Correction..................................9
6Software Installation........................................10
7General Specifications ....................................11
8Electrical specification.....................................12
9Maintenance or Repair....................................14
10 Battery Replacement.......................................14
11 Product Disposal.............................................14

ST-109R
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1
1 Introduction
This Integrating Sound Level Meter (ISLM) is
IEC61672-2002 Class 1 compliant.
2 Accessories
1
Meter
1
User’s Manual
1
AC to DC adaptor
1
Windscreen ball
1
Installation disk
1
USB cable (Mini B type)
1
AC adapter (9~12V/500mA)
4
1.5V AA-LR6-AM3 alkaline battery
3 Safety Precaution
Caution! Please refer to this manual.
Improper use may damage the meter ad
its components.
Complies with European Directive.
Do not operate in environments with flammable
gas or humid environments.
Operating altitude: up to 2000M.
Operating environment: Indoor use; Pollution
degree 2.
Clean with soft cloth when dirty, such as glasses
cloth. Do not clean with chemicals and other
solvents.
EMC: EN61326-1:CISPR 11:Group 1, Class B
Class B –Equipment for use in all establishments
other than domestic.
Group1 –RF energy generated is needed for
internal functioning.

ST-109R
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2
4 Instrument Description
1.Microphone
2.Power Button
3.Backlight Button
4.Start or Pause Test
Button
5.Frequency Weighting
Select Button
6.Time Weighting Select
Button
7.Set Button
8.Test function select
button
9.Record dada / Reading
Record dada button
10. Data Hold/ up arrow
button.
11. Clock switch/left
arrow button
12. OK button
13. Clock switch/right
arrow button
14. Shift switch/end
measurement/down
arrow button
15. MICRO SD card slot
16. Analog/RS232
professional output
17. USB
18. DC voltage input
(6V~12V)

ST-109R
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3
5 Operation
1. Press button to power on or off your
product.
2.Press button to selection measurement
mode.
Sound pressure level (SPL)
Equivalent Energy Sound Level (Leq)
Sound exposure level (SEL)
Peak sound pressure (PeakMAX)
3.Press button to switch time weight.
4. Press button to switch frequency weight.
5.Press button to switch shift, end integrating
measurement during integrating.
6.Press button to start integrating measuring
(SPL exclusive) and revoke auto off function.
7.Display measurement readings on LCD.
＊Peak sound pressure (PeakMAX) does not
support time and frequency weighting.
CAUTION
Please mount windscreen to
microphone as shown in figure below to
reduce wind noise when ambient wind
speed is greater than 10m/sec.

ST-109R
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4
5.1 Backlight Button
In standby mode，Press button to turn on
backlight, press button again to turn it off
immediately.
＊Backlight will turn off in 15 seconds automatically.
5.2 Start/Pause Measuring
Press button to start integrating
Leq/SEL/PeakMAX and MAX/MIN lock-up function
with the maximum and minimum values displayed
at the lower row of LCD and measurement interval
upper row of LCD. Press button to pause
measurement and button to abort
measurement.
＊The longest time that the SPL mode, SEL, and
peak sound pressure mode can last is 99 hours,
59 minutes and 59 seconds.
5.3 Data Hold:
Press button to the on/off data HOLD. If the
integrating is started, this function is invalid.
5.4 Single Record/ Datalogger Reading
Each press the button once to display REC
message, increment record count by 1 and log one
measurement record.
Press and hold button for 1 second to enter
record reading mode, press / button to reading
records, press / button to toggle switch time
display between hh:mm:ss and yyyy/mm/dd, press
and hold button for 1 second to exit reading
function.

ST-109R
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5
5.5 Product Setup
Press button to enter set-up mode of this product for
the following:
Press the button to cycle through the following options:
Clock → Auto record → Auto power off → Communication
interface → Delete one record → Delete all record → Copy
SD card → 94dB calibrate → Back to measurement mode
Select settings
/Select place settings
/ Select value up/down
Enter data delete/copy
Enter setup and exit setup page
＊Please get your SD card installed before enabling SD
card copy function. Please refer to section 5.9 for details.
5.6 Integrating Time Setup
In Leg mode the record and integrating time settings are
the same:
Press button to enter Integrating time selection page,
the LCD display REC with the following options for
selection:
10 seconds → 1 minute → 5 minute → 10 minute → 30
minute → 1 hour → 8 hour → 16 hour → 1 day → Custom.
Press / button to point cursors, / button to
change values, with the maximum settings at 23 hours, 59
minutes and 59 seconds.
Enter setup and exit setup page.
5.7 Auto Power Off
The longest auto power off time is 99 minutes; set this to
zero to disable the auto off function.
The auto power off will be disabled accordingly in the USB
connection mode.

ST-109R
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6
5.8 Analog/Communication Output
Interface
This product features to computer communication
inter-face: USB and RS-232.
The RS-232 (TTL) and analog output inter-face shares.
You may select USB or RS232 inter-face in the set-up
mode. The default value is USB.
AC signal output: MAX: 5VP-P/130dB, output impedance
around 600Ω
DC signal output: 10mV/10dB, output impedance around
100Ω
5.9 Record Data Delete/Back-up
You may define the file name with a desktop program: file
extension is "*.IAR", file name may contain up to 8
characters including capital letter A~F and number 0~9.
The auto backup function copies data from this product to
micro SD card and delete them afterwards.
Please connect to external power source for micro SD card
write-in operation to prevent it from failed due to power
outage.
You may manually delete records in the mode of a single
record or all records.
The single record delete function erases the latest one first
and move to the earlies one.
See section 5.5 for the functions of individual buttons.
＊ID of this product is "FFFFFFFF" by default.
＊This product supports a micro SD card in the
FAT16/FAT32 format.
＊The maximum space supported in SD/SDHC mode is
32GB.

ST-109R
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7
5.10 94dB Calibrate
Input 94dB@1KHZ signal.
Last calibration records are displayed at the lower
right corner of LCD.
Current measurement value is displayed at the
lower left corner of LCD.
Time weight value is Fast by default.
Calibration range: 91dB~97dB.
Press button to the selection frequency
weight.
Press button to select shift.
Press button to select full calibration.
Press button to select next setup mode.
Press button to save calibration value and exit
set-up mode.
5.11 Microphone Connection Inter-face
Pin 1: signal input
Pin 2: ground
Pin 3: power supply
Pin 4: X