TITLE PAGE
I. Safety Information………………………….1
Environmental operating conditions..………1
Maintenance & Cleaning……...………….....1
Safety symbols……………………………… 1
II. General Description.…………………...…..1
III. Specifications……………..………………...2
IV. Names and Functions CM-150 ……….....3
V. Auto Power Off................................6
VI. Names and Functions CM-160.........7
VII. Data Logger Clock & Internal Setup........ 10
VIII. Calibration Procedures..……..………....... 1 1
IX. Measurement Preparation……..……….… 12
X. Operating Precautions………..…………... 12
XI. Measurement……………………………….. 13
XII. Setup Test Link SE-322
(Sound Level Meter) USB
Interface software............................................. 13
Tutorial - Quick Start to
Use SE322 Test Link........................................ 17
Frequently Asked Questions.......................... 20
I. 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; otherwise, the protection
provided by the meter may be impaired.
Environmental operating conditions
§Altitude up to 2000 meters
§Relative humidity 90% max.
§Ambient Operating Temperature 0 ~ 40ºC
Maintenance & Cleaning
§Repairs or servicing not covered in this manual should only be
performed by qualified personnel.
§Periodically wipe the case with a dry cloth. Do not use abrasives or
solvents on this instrument.
Safety symbols
Complies with EMC
CE
When servicing, use only specified replacement parts.
II. GENERAL DESCRIPTION
Thank you for using the Galaxy Audio Checkmate SPL meters. To ensure
that you can get the most from them, we recommend that you read and follow
the manual carefully before use.
These units conform to the IEC651 type2 and ANSI S1.4 Type2 for
Sound Level Meters.
internal memory can store up to 32000 records.(Note 1.)
It uses a USB interface to perform bi-directional communication with a
PC.
Note1:
Every time you press the “REC” button to start recording data and press the “REC” button
again to stop recording, there will be a data set placed in memory You can store as many
data sets as you want until the memory is full.
The CM 160 Data Logger Sound Level Meter’s
III. SPECIFICATIONS
Standard applied: IEC651 Type2, ANSI S1.4 Type2.
Frequency range: 31.5Hz ~ 8KHz
Measuring level range: 30 ~ 130dB
Frequency weighting: A / C
Microphone: 1/2 inch electret condenser microphone
Display: LCD
Digital display: 4 digits
Resolution: 0.1dB
Display Update: 0.5 sec.
Analog display: 50 segment bar graph
Resolution: 1dB
Display Update: CM-150 100 mS
CM-160 50 mS
Time weighting: FAST (125mS), SLOW (1 sec.)
Level ranges: Lo: 30 – 80 dB
Med: 50 – 100 dB
Hi: 80 – 130 dB
Auto: 30 – 130 dB
Accuracy: 1.5dB (under reference conditions @ 94dB, 1KHz)
Dynamic range: 100 dB
Alarm function: “OVER” is when the input is more than upper limit of range.
“UNDER” is when the input is less than lower limit of range.
MAX/MIN hold: Hold readings of the Maximum and Minimum Values.
AC output: 1 Vrms at FS (full scale).
Output impedance: Approx. 100
FS: means the upper limit of each level range.
DC output: 10mV / dB, output impedance approx. 1K
Power supply: One 9V battery, 006P or IEC 6F22 or NEDA 1604.
Power life: About 50hrs (alkaline battery)
AC adapter: Voltage 9 VDC (8-15VDC Max)
Supply current : > 30mADC Socket : pin Ground
Casing Positive External Diameter 3.5mm
Internal Diameter 1.35mm
±
Ω
Ω
Z
Z Z
Z
Electromagnetic Compatibility:
RF field = 3V/m
Total accuracy = specified accuracy + 0.5dB
Operation temperature: 0 to 40ºC ( 32 to 104ºF )
Operation humidity: 10 to 90%RH
Storage temperature: -10 to 60 ( 14 to 140 )
Storage humidity: 10 to 75%RH
Dimensions : 275 (L) x 64 (W) x 30 (H)mm
10.8 (L) x 2.5 (W) x 1.2 (H)inch
Weight: 285g (including battery)
Included Accessories: 9V battery, carrying case, screwdriver, instruction
manual, windscreen, 3.5 mm plug, software, and USB cable.
(Software, USB cable not included with CM-150).
ºC ºF
IV. NAME AND FUNCTIONS CM-150
Windscreen
If you operate at wind speeds over 10m/sec, install the windscreen
onto the meter’s microphone.
Display
SYMBOL FUNCTION
MAX Maximum value displayed
MIN Minimum value displayed
Over range
Under range
FAST Fast response
SLOW Slow response
dBA A-Weighting
dBC C-Weighting
Range Indicator
Low-Battery
Under range 20dB
AUTO Auto level range selected
Power & Backlight button
The key turns the CM-150 ON or OFF and the backlight ON & OFF.
¡
Press it once to turn on the CM-150.
Press it again for a moment to turn the backlight ON or OFF. .
Press and hold this button for 3 seconds to turn OFF the power.
MAX / MIN hold button
Select the proper level range before using MAX/MIN to ensure
that the reading value will not exceed the measurement range. Press
button to enter the maximum and minimum recording mode.
Press once to select MAX value. Press again to select MIN value,
and press again to select current value with “ MAX/MIN “ annunciator
blinking. Press and hold down button for 2 seconds to exit the
MAX/MIN mode.
Note: If the sound level range or A-C weighting is changed , the MAX/
MIN mode will clear.
Level range control switch
Each time the UP button is pressed, the range level is increased
from “ Lo ” Level to “ Hi “ Level to “Auto” Level.
Each time the DOWN button is pressed. The range level is
decreased from “Auto” Level to “ Hi ” Level to “ Lo “ Level.
Frequency Weighting select button
A: A - Weighting filters out low frequencies to approximate the response
of the human ear at lower SPL's.
C: C - Weighting filters less low frequencies to approximate the response
of the human ear at higher SPL's. (a flatter response.)
Time weighting select button
FAST: for normal measurements
SLOW: for checking average level of fluctuating noise.
Microphone
1/2 inch Electret Condenser microphone
CAL potentiometer
Calibration control for level calibration adjustment.
RS-232 Interface:
The USB signal output is a 9600 bps USB interface.
RX
TX
GND
Signal output terminal
AC: 1 Vrms Corresponding to each range step.
Output impedance = 100Ω
Output signal by standard 3.5mm mini stereo jack with signal on tip.
Note: At “Auto” level range, output signal is Auto select on “Lo” or
“Med” or “Hi” level range.
DC Signal
AC Signal Ground
DC: Output: 10mV/dB
Output impedance = 1KΩ
Output signal by standard 3.5mm mini stereo jack with signal on ring
External DC 9V power supply terminal
For connection with AC adapter.
Tripod mounting screw.
Battery Cover
V. AUTO POWER OFF
By default, when the meter is powered on, it is under auto power off
mode. The meter will shut itself off after 30 minutes if there is no key
operation, no USB communication, or no recording combination
selected at power up.
By pressing and holding the “FAST/SLOW” button and then turning on
the meter the will not show up, indicating that auto power off is
disabled.
80dB
Lo = 30
100dB
Med= 50
130dB
Hi = 80
130dB
Auto = 30
FAST
+
REC
+
Windscreen
If you operate at wind speeds over 10m/sec, install the windscreen
onto the meter’s microphone.
Display
SYMBOL FUNCTION
MAX Maximum value displayed
MIN Minimum value displayed
Over range
Under range
FAST Fast response
SLOW Slow response
dBA A-Weighting
dBC C-Weighting
Range Indicator
Low-Battery
Under range 20dB
AUTO Auto level range selected
REC Recording Data Logger
FULL Memory Full
Auto Power OFF active
Power & Backlight button
The key turns the CM-160 ON or OFF and the backlight ON or OFF.
¡
Press it once to turn on the CM-160. The backlight will stay on
until the meter is powered off.
Press and hold this button for 3 seconds to turn OFF the meter.
Note: When the CM-160 is turned ON, the LCD will show
how much memory space is available to use.
MAX / MIN hold button
Select the proper level range before using MAX/MIN to ensure
that the reading value will not exceed the measurement range.
Press button to enter the maximum and minimum recording
mode. Press once to select MAX value. Press again to select MIN
value, and press again to select current value with “ MAX/MIN “
annunciator blinking. Press and hold it down for 2 seconds to
exit the MAX/MIN mode.
Note: If the sound level range or A-C weighting is changed, the MAX/
MIN mode will clear.
Record Data logger button
When the button is pressed, the meter will start recording and
the “REC” annunciator is displayed. Press again to stop recording.
Frequency Weighting select button
A: A - Weighting filters out low frequencies to approximate the response
of the human ear at lower SPL's.
C: C - Weighting filters less low frequencies to approximate the response
of the human ear at higher SPL's. (a flatter response.)
Time weighting select button
FAST: for normal measurements
SLOW: for checking the average level of fluctuating noise.
Level range control button
Each time you press button, the level range will rotate between
“Lo” level, "Med” level, “Hi” level and “Auto” level.
Microphone
1/2 inch Electret Condenser microphone
CAL potentiometer
Calibration control for level calibration adjustment.
USB Interface:
The USB signal output is a 9600 bps USB interface.
RX
TX
GND
Signal output terminal
AC: 1 Vrms Corresponding to each range step.
Output impedance = 100Ω
Output signal by standard 3.5mm mini stereo jack with signal on tip.
Note: On “Auto” level range, output signal is Auto select on “Lo” or
“Med” or “Hi” level range.
DC: Output: 10mV/dB
Output impedance = 1KΩ
Output signal by standard 3.5mm mini stereo jack with signal on ring.
External DC 9V power supply terminal
For connection with AC adapter.
Tripod mounting screw.
Battery Cover
DC Signal
AC Signal Ground
VII. DATA LOGGER CLOCK & INTERVAL SETUP
DataLogger:
Ÿ
When the "REC" button is pressed, the meter will start
recording. Pressing the "REC" button again will stop
recording. If you want to clear the memory, power off the
meter. Press and hold the “REC” button and press the
power button and hold it for at least 5 seconds. The LCD will
show "CLR" and “SURE” to clear the memory.
Clock Setup :
1: press and hold the“A/C” button and then power up the
meter:
2: press the“MAX/MIN”(clock) button:
3: Press "REC" p or "LEVEL" q to increase or decrease
the number. Press the “MAX/MIN”(clock) button to
adjust the next item. The adjusting order is year Z month
Z day Z hour Z minute. Press the “MAX/MIN” (clock)
button to finish adjusting. If you want to abort during a
setup process, press the power button to cancel.
Recording Interval Setup :
Ÿ
1: press and hold the “A/C” button and then power up
the meter:
2: press the “FAST/SLOW"(INTV) button:
3: press "REC" p or "LEVEL" q to increase or
decrease the number. Press the “FAST/SLOW "
(INTV) button to adjust next item. Press
“FAST/SLOW” (INTV) to finish. If you want to abort
during a setup process, press the power button to
cancel.
Auto Power Off:
Ÿ
By default, when the meter is powered on, it is in the auto power off
mode. The meter will shut itself off after 30 minutes if there is no key
operation, no USB communication, or no recording combination selected
at power up.
By pressing the “FAST/SLOW” button and then turning on the
meter the will not show up , indicating that auto power off is
disabled.
VIII. CALIBRATION PROCEDURES
Using a standard Acoustic Calibrator
(94dB , 1KHz Sine wave)
Acoustic Calibrator
A
C
SETUP
MAX
FAST
MIN
CLOCK
REC
Lo = 30
Med=
Hi = 80
Auto=
POWER-UP OPTIONS
SLOW
INTV
LEVEL
L
A
C
2
3
2
S
80 dB
50
100 dB
130 dB
30
130 dB
R
T
U
P
T
U
O
V
9
C
D
Screwdriver
(1) Make the following switch settings.
Display: dBA
Time weighting : FAST
Measurement mode : MAX/MIN Mode function disabled.
Level range: 50 to 100dB
(2) Insert the microphone housing carefully into the insertion hole of the
calibrator.
(3) Turn on the calibrator and adjust the CAL potentiometer of the
SPL meter, until the value displayed matches the value supplied by
the calibrator. All products are well calibrated before shipment.
Recommended Recalibration cycle: 1 year.
IX. MEASUREMENT PREPARATION
(1) Battery Loading
Remove the battery cover on the back and put in one 9V Battery.
(2) Battery Replacement
When the battery voltage drops below the operating voltage, this
symbol will appear . Replace 9 Volt battery.
(1) AC Adapter Connection
When the AC adapter is used, insert the plug of the adapter into the
DC9V connector on the side panel.
X. OPERATING PRECAUTIONS
(1) Wind blowing across the microphone can cause extraneous noise.
When using the instrument in the presence of wind, mount the
windscreen to the mic to avoid picking up undesirable signals.
(2) Calibrate the instrument before operation if the instrument was not in
use for a long time or has been operated in an unfavorable
environment.
(3) Do not store or operate the instrument in high temperature or high
humidity environments.
(4) Keep the microphone dry and avoid severe vibration.
(5) Take out the battery and keep the instrument in a low humidity
environment when not in use.
XI. MEASUREMENT
(1) Open battery cover and install a 9V battery in the battery
compartment.
(2) Turn the power on and select the desired response Time and Weighting.
If the sound source consists of short bursts or only intermittent sound
peaks, set the response to FAST. To measure an average sound level,
use the SLOW setting. Select A-weighting which filters out low
frequencies to approximate the response of the human ear at lower
SPL's. C - Weighting filters less low frequencies to approximate the
response of the human ear at higher SPL's. (a flatter response.)
(3) Select desired Level Range.
(4) Hold the instrument comfortably in your hand or mount to a tripod and
point the microphone at the suspected noise source. The sound
pressure level will be displayed.
(5) When MAX/ MIN (maximum, minimum hold) mode is chosen. The
instrument captures and holds the maximum and minimum noise
level for a long period using any of the time weightings and ranges.
Press the MAX /MIN button for 2 seconds to clear the MAX/MIN
reading. MAX/MIN ” symbol disappears.
(6) Turn OFF the instrument. Remove the battery if the meter is not to
be used for an extended period.
XII. CM-150 / CM-160Setup Test Link SE-322 USB
interface software:
The Test Link package contains:
Ÿ
1. 80mm Test Link CD.
2. Custom designed USB cable for Test Link.
3. 80mm USB driver CD
System Required:
Ÿ
Windows 95, Windows 98, or Windows NT 4.0 and higher..
Minimum Hardware Required:
Ÿ
PC or Notebook with Pentium 90MHz or higher, 32 MB RAM.
At least 5 Mb hard disk space available to install Test Link.
Recommended resolution 800X600.
Ÿ Install TestLink:
1 It is recommended that all other applications be closed before
installing Test Link.
2. Insert setup CD disk into CD disk drive.
3. From the Start button on the Taskbar select Run.
4. Type E:\SETUP (where E is the letter of the CD drive) and choose OK.
The SE322.exe(executable file) and help file will be copied to the hard drive
(default is c:\program files\TestLink\SE322). For detailed operation
instructions, refer to online help while executing SE322.
Main Menu
Ÿ
File | Open- Retrieve files from the disk.
Save - Save the active window(when the caption bar is highlighted)
data to the disk.
Print - Print the data of the active window(graph or list).
Printer Setup - Select printer.
File | Exit: Terminates Test Link program.
View | Control Panel: By opening the Panel Window, the user can
control the meter via the button in this window.
View | Real-Time Graph: Open Real-Time Graph display to graph the
present data.
Real Time Data | Run - Start collecting real time data .
Stop - Stop collecting real time data .
Data Logger: By opening the Data Logger Window, the user can
load recorded data from the meter to the PC in this window.
Output To Graph - Graph tabular data.
- Display or hide Statistic1.
- Display or hide Statistic2.
- Normal cursor.
- When selected, the mouse cursor will become a cross sign when
moving on the graph. Click on the graph to mark a cross sign on
the graph.
- When selected, the mouse cursor will become a "T” sign when
moving on the graph. Click on the graph to add text annotations.
- Color graph.
- Monochrome graph.
You can choose a rectanglular area on the graph to zoom into for detail.
There are two vertical lines (CURSOR A and CURSOR B)in the graph.
There are time and value displays on the top and the right side of each cursor.
You can move the mouse cursor over cursor A or B and click to drag the
cursor to the left or right. Right below cursor A and B is a slider. You can also
click and drag the slider to move cursor A or B. Below the slider are the
statistics that display start time, sampling rate, data number, and maximum
and minimum levels shown on the graph. The statistics also display the
maximum, minimum, and average between cursor A and B. This data updates
automatically when cursor A or B is moving.
You can double click the graph to call up the option dialog. In the option
dialog, the graph style can be customized.
You can right click on the graph (not available for real time graphs) to call
up the popup menu.
You can Zoom the graph by using the mouse:
To Zoom:
1. Press the left mouse button and drag the cursor to select the area
on which you want to zoom in.
2. Release the mouse button.
To Undo the Zoom - Right click on the graph to bring up the
pop-up menu. Select Undo Zoom .
When you have a Sound Level DATA LOGGER meter connected to a
PC and select "Data Logger" from main menu or click from the tool
bar recorded data will be downloaded from the meter and there will be a
progress indicator to show the loading progress. If an error occurs, click
"Data Logger" again.
After the data is loaded, the left hand side will show how many data
sets were loaded and detailed information for each data set (start date,
start time, recording rate, and record numbers).
The first data set will be transferred to the graph and the tabular on the
right hand side every time after recorded data has been downloaded from
the Sound Level Meter. Click any data set to select that set for the graph.
On the right hand side is the waveform graph and statistics for the data set
that is chosen.
Tutorial - Quick Start to Use SE322 Test Link
Ÿ
(1.) Recording real time data in waveform.
1. Power on the Sound Level Meter and connect it to a
USB port with the USB cable.
2. Start the SE322 program.
3. If the connection is successful the panel will display the same
value as the Sound Level Meter. If there is a failure to connect the
meter with the PC, the display will read "No Connection" in the
Test Link Se322 panel window.
4. When the connection is successful, click to start recording
real time data, There will be a waveform displayed in the Real
Time Graph Window.
5. Click to start recording.
(2.) How to save the recorded real time data to a file.
1. Click the graph window you want to save and the graph window
will become active. Choose File | Save the from main menu or
click from the tool bar .
2. There will be a save dialog window where the file name and type
can be specified. There are three types of files that can be
chosen: binary file (*.ghf), text file (*.txt) and EXCEL format
file (*.csv). The *.ghf file uses much less disk space to save the
data than the other two file formats, but it can only be used in Test
Link SE322. The text file can be opened by Test Link SE322 and
any other word processor program like Word, Notepad, etc. EXCEL
format file can be opened by Test Link SE322 and Microsoft
EXCEL.
(3.) How to load the recorded data from the memory of a Sound Level
Meter and save it to a file
(Only for models with Data Logger)
1. Power on the Sound Level Meter.
2. Press the REC button of the meter to start recording data.
3. When finished, press the REC button again to stop recording data.
4. Connect the Sound Level Meter to a PC
5. Start SE322 program.
6. Choose Data Logger from the main menu or click from the tool
bar.
7. Proceed with download as described on page 17.
Frequently Asked Questions
Ÿ
1. I have connected a Sound Level Meter to a PC USB port and turned
meter power on, but the PC still shows "NO CONNECTION".
Answer: It could be that all USB ports are occupied by other
applications. Close all other applications . If there is still
"NO CONNECTION", restart your computer and run
Test Link SE322 again.
2. How can I save the graph to a file which can be used in EXCEL ?
Answer: When you save a graph to a file , the default file format is
"*.ghf" but you can select *.csv to save files. CSV is an
EXCEL file format. You can open it in EXCEL.
3. How do I uninstall Test Link SE322 ?
Answer: Uninstall Test Link SE322 by launching the Add/Remove
Programs applet out of the Control Panel, highlighting the
SE322, and clicking on the Add/Remove... push button. The
SE322 folder and files will be removed from your computer.
4. Why did data downloading fail?
Answer: This might be caused by the slow response of some
PC systems.
5. How do I zoom in on the graph?
Answer: Press the left mouse button and drag the cursor to select the
area on which you want to zoom in. Release the mouse button.
6. When I setup the real time sampling with a fast rate(eg. 0.1 sec),
some of the sampling data gets lost.
Answer: This might be caused by slow response time of some PC
systems.
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