ENDEAVOUR ET2146 User manual

Operating Instruction for
Sound Level Meter
Please read this manual before switching the unit on.
Important safety information inside.

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Operating Instruction for Sound Level Meter
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Content
1.Product Introduction.....................................................................
2.Safety Information........................................................................
2-1.Environment Conditions...........................................................
2-2.Maintenance & Clearing..........................................................
2-3.Safety Symbols.......................................................................
3.Functions Description...................................................................
4.Specification.................................................................................
5.Description...................................................................................
5 .................................................................... -1.Meter Description
5 2 Symbols Used on LCD Display.................................................. - .
6.Button & Functions.......................................................................
6 Backlight Button..................................................................... -1.
6 2 MAX/MIN Button.....................................................................- .
6 3 REC Button.............................................................................- .
6 3 1 Datalogger Function........................................................... - - .
6 3 2 Adjusting Datalogger Response.......................................... - - .
6 3 3 Data Zero Function............................................................. - - .
6 4 HOLD Button...........................................................................- .
6 5 Frequency Weighting Select Button..........................................- .
6 6 FAST/SLOW Button..................................................................- .
6 7 SETUP/Bluetooth Button..........................................................- .
6 7 1 The Time Chip Adjustment and Bluetooth Switch.................- - .
6 7-2 USB Communications Setting.............................................. - .
6 7-3 Bluetooth Communications Setting..................................... - .
6 8 LEVEL Button...........................................................................- .
6 9 Power Button...........................................................................- .
6 10 External DC 9V Power Supply Terminal....................................- .
6 11 USB Interface........................................................................- .
6 12 AC/DC Signal Output Earphone Outlet.....................................- .
6 13 Calibration Potentiometer (CALL)............................................- .
7. Calibration Procedures..................................................................
8. Measurement Preparation.............................................................
9.Operating Procedure......................................................................
10.Notice.........................................................................................
11.Accessories.................................................................................
12. Installing the Software................................................................
13. Mobile APP Software...................................................................

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Operating Instruction for Sound Level Meter
1.Product Introduction
• This Sound Level Meter is designed for noise project; quality control; illness prevention and cure and all kinds
of environmental sounds measurement.
• It is applied to the sounds measurement at factory, school, office, traffic access and household, etc.
2. Safety Information
• Read the following safety information carefully before attempting to operate or service the meter.
• Use the meter only as specified in this manual:
2-1.Environment Conditions
• Altitude lower than 2000 meters
• Relatively humidity <90%RH
• Operation Ambient 0 to 40°C
2-2.Maintenance & Clearing
• Repair or servicing not covered in this manual should be performed by qualified personnel.
• Periodically wipe the case with a dry cloth.
• Do not use solvents or eradicator on this instrumen.
2-3.Safety Symbols
Comply with EMC
3.Functions Description
• This unit confirms to the IEC61672-1 CLASS2 for Sound Level Meters.
• MAX & MIN measurements.
• Over range display.
• Under range display.
• A & C Weighting.
• FAST & SLOW response.
• Analog AC/DC outputs for connection to frequency analyzer or X-Y shaft recorder.

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Operating Instruction for Sound Level Meter
4.Specification
Standard Applied
Accuracy
Frequency Range
Dynamic Range
Level Ranges
Frequency Weighting
Time Weighting
Microphone
Display
Display Update
Max Hold
Min Hold
Hold
Alarm Function
Analog Output
Data Output
Auto Power Off
Power Supply
Operation Temperature
Operation Humidity
Storage Temperature
Storage Humidity
Dimension (L x W x H)
Weight
IEC61672 -1 CLASS2
±1.4dB
31.5Hz to 8kHz
50dB
Lo: 30dB to 80dB / Med: 50dB to 100dB / Hi: 80dB to 130dB / Auto: 30dB to 130dB
A/C
FAST (125ms); SLOW (1s)
1/2 inch electret condenser microphone
4 digits LCD display with a resolution of 0.1dB
2 times/sec.
Hold the Maximum reading
Hold the Minimum reading
Hold the readings
“OVER”is when input is more than upper limit of range;
“UNDER”is when input is less than lower limit of range.
AC/DC outputs from earphone outlet, AC=1Vrms; DC=10mV/dB
USB data traffic, Bluetooth
Meter automatically shuts down after approx. 15 minutes of inactivity.
One 9V battery, 006P or NEDA1604 or IEC 6F22.
0 to 40°C
10%RH to 90%RH
-10 to 60°C
10%RH to 75%RH
278 x 76 x 50mm
350g

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Operating Instruction for Sound Level Meter
5.Description
5-1.Meter Description
1-Windscreen
2-LCD Display
3-Backlight Button
4-MAX/MIN Button
5-REC Button
6-HOLD Button
7-Frequency Weighting Select Button
8-FAST/SLOW Button
9-SETUP/Bluetooth Button
10-LEVEL Button
11-Power Button
12-Microphone
External DC 9V Power Supply Terminal13-
14-USB Interface
15-AC/DC Signal Output Earphone Outlet
16-Calibration Potentiometer
17-Tripod Mounting Screw
18-Battery Cover

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Operating Instruction for Sound Level Meter
5-2.Symbols Used on LCD Display
1-Under Range
2-Maximum Hold
3-Bluetooth
4-Minimum Hold
5-Fast Response
6-Slow Response
7-Over Range
8-Range Indicate
9-Date/Time Indicate
123 5 6 7
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13 14 16
15 18 17
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10-4 Digits
11-Auto power off
12-Low Battery Indicate
13-Recording Data Into Computer
14-Memory Full
15-C-Weighting (Response to machine monitor)
16-A-Weighting (Response to human sense)
17-Data Hold Function
18-Auto Level Range Selection

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Operating Instruction for Sound Level Meter
6.Button & Functions
Backlight Button 6-1.
• Turn the backlight On/Off.
• Datalogger Response setting:
1.Press the Button continuously until “Int” symbol appears after the meter turn on.Backlight
2.Press the Button to set up the data memory response.LEVEL
3.Then press the Button to keep the setting.HOLD
MAX/MIN Button 6-2.
• Maximum and Minimum hold Press the MAX/MIN Button for one time to enter MAX/MIN measurement, “MAX”
will appear on LCD, maximum sound level will be captured and held until higher sound level is captured.
• Press the MAX/MIN Button again, “MIN” will appear on LCD and minimum sound level will be captured and held
until new lower sound level is captured.
• Press the MAX/MIN Button one more time to exit MAX/MIN measurement.
REC Button 6-3.
Datalogger Function 6-3-1.
• Press the REC Button after it power on, the display will show “REC” to start Data Recording.
• Press the REC Button again to exit the record.
Note: In order to avoid data error, please don’t power it off under REC condition, when the REC function is deleted
then it can power off.
Adjusting Datalogger Response 6-3-2.
• Press the Button continuously before power it on, then press the Button, it will be displayedBacklight Power
as following.
• Press the LEVEL Button to adjust memory time, press the HOLD Button to hold the setup.

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Operating Instruction for Sound Level Meter
6-3-3.Data Zero Function
Press the REC Button continuously before power it on, loosen the button when the display showing “CLR” after
the meter power on, which indicates that the data in Datalogger has been deleted.
HOLD Button 6-4.
Press the HOLD Button, the hold function freezes the reading in the display.
Frequency Weighting Select Button 6-5.
• A: A-Weighting
• C: C-Weighting
FAST/SLOW Button 6-6.
Time weighting selection.
FAST: St sampling measurement, 1 time per 125ms.
SLOW: Slow sampling measurement, 1 time per second.
Button 6-7.SETUP/Bluetooth
The Time Chip Adjustment and Bluetooth Switch 6-7-1.
1.Press the SETUP Button and then power it on, when “TIME” symbol displays then loosen the SETUP Button, the
meter will be under time adjustment mode, at the time the display will show the date as following.

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Operating Instruction for Sound Level Meter
2.Press the SETUP Button second time, the display showing; the display showing “minute” adjustment mode,
press the to make the adjustment, press the HOLD to keep the setup.LEVEL Button Button
3.Press the SETUP Button third time, the display showing; the display showing “hour” adjustment mode (h-P=P.M,
h-A=A.M), press the to make the adjustment, press the HOLD to keep the setup.LEVEL Button Button
4.Press the SETUP Button fourth time, the display showing; the display showing “date” adjustment mode, press
the to make the adjustment, press the HOLD to keep the setup.LEVEL Button Button

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Operating Instruction for Sound Level Meter
5.Press the SETUP Button fifth time, the display showing; the display showing “month” adjustment mode, press
the LEVEL Button to make the adjustment, press the HOLD Button to keep the setup.
6.Press the SETUP Button sixth time, the display showing; the display showing “year” adjustment mode, press
the LEVEL Button to make the adjustment, press the HOLD Button to keep the setup.
7.Press the SETUP Button seventh time, the display showing; the display showing initialization of the time chip,
press the HOLD Button to keep the setup; time and date have returned to factory setup; when the battery is
exhausted or replaced, if the time can’t be adjusted then please initialize the time chip first.

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Operating Instruction for Sound Level Meter
6 7-2 USB Communications Setting- .
• Turn on the meter, connect the meter with the computer correctly, choose the software COM3 (COM4).
• Then press the SETUP Button, “ ” disappears from the display to indicate and disable auto power off, that the
USB data is transmitting.
6 7-3 Bluetooth Communications Setting - .
When you press the SETUP Button or REC Button, “ ” disappears from the display to indicate and disable auto
power off, thattheBluetooth data is transmitting.
6 8 LEVEL Button: Level Range Selection - .
Each time you press the LEVEL Button, the level range will change between “Lo” level, “Med” level, “Hi”‘ level
and “Auto” level in the circular.
6 9 Power Button - .
Turn the meter power ON/OFF.
6 10 External DC 9V Power Supply Terminal - .
• For connection with DC 9V power supply.
• Aperture size: External diameter: 3.5mm; Internal diameter: 1.35mm.
6 11 USB Interface - .
USB signal output is a 9600 bps serial interface.
6 12 AC/DC Signal Output Earphone Outlet - .
AC Output Voltage: 1Vrms corresponding to each range step
AC Output Impedance: 100Ω
DC Output Voltage: 10mV/dB
DC Output Impedance: 1kΩ
6 13 Calibration Potentiometer (CALL) - .
For external standard level calibration adjustments.
GROUND
AC OUTPUT
DC OUTPUT

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Operating Instruction for Sound Level Meter
7. Calibration Procedures
1.Make the following switch settings:
• Frequency Weighting: A-Weighting
• Time Weighting: FAST
• Level Range: 50 to 100dB
2.Insert the microphone housing carefully into the 1/2 inch insertion hole of the calibrator (94dB at 1kHz).
3.Turn on the switch of calibrator and adjust the CALL potentiometer of the unit 94.0dB is displayed.
Note: All products are well calibrated before shipment. Recommended recalibration cycle 1 year.

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Operating Instruction for Sound Level Meter
8. Measurement Preparation
1.Remove the battery cover on the back and put in one 9V battery.
2.Recover the back cover.
3.When battery voltage drops below the operating voltage or battery aging, this symbol “ ” will appear on LCD,
replace the 9V battery.
4.When the AC adapter is used, insert the plug of the adapter (3.5Ø) into the DC 9V connector on the side panel.
9.Operating Procedure
1.Power on the meter.
2.Press the LEVEL Button to select desired level, base on “UNDER” or “OVER” do not appear on LCD.
3.Select “dBA” for general noise sound level and “dBC” or measuring sound level of acoustic material.
4.Select “FAST” for instant sound and “SLOW” for average sound level.
5.Select the MAX/MIN Button for measuring maximum and minimum noise level.
6.Hold the instrument comfortable in hand or fix on tripod and measure sound level at a distance of 1~1.5 meter.
10.Notice
• Do not store or operate the instrument at high temperature and high humidity environment.
• When not in use for long time, please take out the battery to avoid battery liquid leakage and cautery on the
instrument.
• When using the instrument in the presence of wind, it is a must to mount the windscreen to not pick up
undesirable signals.
• Keep microphone dry and avoid severe vibration.
11.Accessories
• Instruction Manual
• Installation CD
• Screwdriver
• Tripod Mounting
• Battery
• Power Source
• 3.5Ø Earphone Plug
• Windscreen
• Software
• USB Interface Cable

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Operating Instruction for Sound Level Meter
12. Installing the Software
1.Start Windows.
2.Insert the CD into the CD-drive.
3.Run “SETUP.exe” installation program in file DISK1, install it to the referred directory
4.Install CP210X drive software, connecting the meter with the computer by USB interface, install CP2102 drive
software in “My computer property:\hardware\facility management\ COM CP210X USB”.
5.USB Drive Installation.
• Copy the CP210XWIN Drivers to a certain directory, such as “C:\ usb_driver”.
• Connect the USB to the computer, the Windows system will show finding a new hardware, choose specific
directory “C:\ usb_driver” according to the instruction.
• After Driver installation, a new COM port will be added to the Ports in the Device Manager, port number will be
ranged following the primary COM ports, such as “COM3 or COM4”.
6.Once the drive software is installed, start the application software, connect the meter to the computer by USB,
then search for the COMX port occupied by CP210X, press the SETUP Button, the “ ”symbol will not appear on
the display, which indicate the meter is transmitting data to the computer.
7.More information please refer to the software help document.

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Operating Instruction for Sound Level Meter
13. Mobile APP Software
1.Start APP
2.Click “Connect Dcvice” to search for Bluetooth devices, and click Corresponding Equipment.

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Operating Instruction for Sound Level Meter
3.Select “Environment Meter” to enter the instrument display interface.
4.View real-time display noise data and select control instructions.
5.More information please refer to the software help document.

Rev.210605
Operating Instruction for Sound Level Meter