Triplett SLDL20 User manual

User Manual
SLDL20
Sound Level Datalogger

Introduction
Congratulations on your purchase of the Triplett SLDL20 Sound Level Meter
Datalogger. This device measures and stores approx. 129,920 readings.
Using the supplied Windows™software, the datalogger can be configured
for datalogging rate, high/low alarm limits, frequency weighting, response
time, start-mode, and other parameters. The software is also used to
download the stored data to a PC. Sound Level data can then be graphed,
printed and exported to other applications. The data logger is supplied with a
long-life lithium battery. This meter is shipped fully tested and calibrated and,
with proper use, will provide years of reliable service.
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.
⚫Environment conditions
Altitude: 2000 meters max.
Relative humidity ≤ 90% RH
Operation Ambient 32 to 104°F (0 to 40°C)
⚫Maintenance & Cleaning
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
abrasives.
⚫Safety symbols Complies with EMC

Maintenance
WARNING: To avoid electrical shock, disconnect the meter from
any circuit and turn OFF the meter before opening the case. Do not
operate with an open case.
Battery Replacement
1. Remove the green protective cover by pushing the bottom of the
meter until it slides through the opening at the top.
2. Remove the two Phillips head screws that secure the battery
compartment at the back of the meter.
3. Open the battery compartment and replace the 3.6V lithium battery
observing correct polarity.
4. Re-assemble the meter before use.
Safety: Please dispose of batteries responsibly; never dispose of
batteries in a fire, batteries may explode or leak. If the meter is not to be
used for 60 days or more, remove the battery and store separately.
Meter Description
1. Green LED
2. Red and Yellow LED
3. Button

Operation
The maximum number of data points that the logger can hold in its internal
memory is 129,920. The maximum number of Real Time measurements is
10,000.
Operating System Compatibility
WindowsTM 2000, XP, Vista, and Windows 7, 10
Minimum Hardware Requirements
•Desktop or Notebook PC with 90MHz (or better) clock speed
•32 MB RAM
•7 MB of hard disk space (for Datalogger USB software)
•Monitor display resolution of 1024 x 768 with High Color (16 bit)
Main Menu
⚫File
Save Save the recorded data to the disk.
Open Open a saved file.
Print Setup Change the printer and printing options.
Print Preview Preview the graph or the list before printing.
Print Print the graph or the list.
Exit Close the datalogger program.
⚫Instrument Cal Adjust Use the Calibration
Adjustment procedure if readings exceed the specified accuracy
tolerance.
Logger Setup Configure the sampling rate, the total number

of data points to log, high and low alarm limits,
the LED flash rate, storage (STOR) or real
time (RT) logging, frequency weighting
(dBA/dBC), response time (fast or slow), and
manual/automatic logging start
Download Download data from the datalogger.
Stop Running Stop datalogging (real time RT mode only).
Previous MeasurementThe most recent measurement data will be
recalled.
⚫Window
Instrument Show or hide the instrument window.
Info Dialog Show or hide the info dialog window.
⚫Help
About Display the software version number.
Help Topics Display the software help document.
Cal Adjust (Calibration Adjustment)
The Cal-Adjust feature corrects for error in the output of the microphone to
the calibrated reference value from a Sound Level Calibrator. Note that this
procedure can only be performed after the offset is determined empirically
from calibrator measurements.
Connect the meter to the computer using the
USB extension cable.
Click on the icon on the menu bar.
The following window appears:
Adjustment Value range: Adjustment Value is a single calibration value
range: "-12.5" to"12.5"，value "1.0" means "1dB.

For example, assume a reading of 94.5dB when the datalogger is connected
to a 94.0dB calibration signal.
Set the "Adjustment Value" to "-5" (-0.5dB) to correct for the 0.5db error.
Click “OK” and the “Total calibrated value is -5” statement will appear. The
calibration is now complete.
Datalogger Setup
Click the icon on the menu bar. The Setup window will appear as
shown below; Descriptions for each field in the Setup window are
provided directly below the illustration:

1. The ‘Sampling Setup’ field instructs the DATA LOGGER to log
readings at a specific rate and for a finite number of data points.
The Sampling Time ‘combo box’ located beneath the Sampling
Rate and Sampling Points fields shows the total number of days,
hours, minutes, and seconds the Datalogger will run based on the
Sample Rate and Sample Point settings. Note that a sample rate
of 50ms can only be selected for use in RT (real time) mode.
2. ‘Alarm Setup’ allows the user to set HIGH and LOW measurement
limits.
3. ‘LED Flash Cycle Setup’ allows the user to set the time in seconds
between each flash of the LED. Select “No Light” for maximum
battery life.
4. The Datalogging record mode can be set to STOR (store readings
to memory) or RT (real time) where readings are displayed in real
time on a PC.
5. The Datalogger frequency weighting can be set to dBA or dBC.
Note: With ‘A’ weighting selected, the meter responds like the
human ear (boosting and cutting the sound amplitude over the
frequency spectrum). ‘A’ weighting is used for environmental
measurements, OSHA regulatory testing, law enforcement, and
workplace design. Select ‘C’ weighting for flat response
measurements (no boost or cut). ‘C’ weighting is suitable for the
sound level analysis of machines, engines, etc. Most OSHA
related testing is performed using 'A' Weighting and SLOW
Response Time settings.
6. The Datalogger response time can be set to FAST or SLOW.
Note: Select FAST to capture noise peaks and noises that occur
very quickly. In FAST mode, the meter responds in 125ms. Select
the SLOW Mode (meter responds in 1 second) to monitor a sound
source that has a reasonably consistent noise level or to average

quickly changing levels. Selection of Fast or Slow is determined by
the application and any directives or standards related to that
application.
7. The Manual and Automatic select buttons allow the user to start
data logging immediately (Auto) or at a later time (Manual).
Click the SETUP button to save changes. Press the DEFAULT button to
return the Logger to its factory default condition. Press the CANCEL
button to abort the setup.
Note: Displayed data will be permanently erased when “Setup” is selected.
To save the displayed data, Select “Cancel” and then use the data
Download and Save functions to save the data.
Note: Always ensure that the remaining charge in the battery is sufficient
to last the complete duration of the logging exercise. If in doubt, install a
fresh battery before logging critical data.
Logging Readings with the Datalogger
1. Configure the Datalogger using the software as explained in this
HELP utility.
2. MANUAL LOGGING START: With the datalogger in the Manual
mode (configured using the Datalogger Setup screen) and
disconnected from the PC, press and hold the Datalogger’s push-
button for approx. 5 seconds to start logging readings; the LEDs will
flash Red, Green, and then Yellow indicating that logging has begun.
3. AUTOMATIC LOGGING START: With the datalogger in the
Automatic mode (configured using the Datalogger Setup screen) the
Datalogger will start immediately. The LEDs will flash Red, Green,
and then Yellow indicating that datalogging has begun.
4. During measurement sessions, the green LED flashes at the
frequency selected in the Datalogger Setup screen.
5. When the Datalogger memory is full, the yellow LED will flash for 10
seconds.
6. If the battery voltage runs critically low, the LEDs will display Red and
Green lights simultaneously.

7. Replace the battery with a ½ ‘AA’ 3.6V lithium battery. Battery
replacement instructions are provided later in this guide.
Datalogger Download
To transfer the data that is stored in the Logger to a PC:
1. Connect the DATA LOGGER to the same USB port used when the
DATALOGGER was initialized.
2. Open the Datalogger software program.
3. Click the Download icon .
4. The window shown below will appear. Click DOWNLOAD to begin
transferring readings. The logger will be empty of data once
readings are transferred.
If readings are successfully transferred, the Data graph window (shown
below) will appear. If the transfer fails, the most likely reason is that the
software driver was not correctly installed when the software was
installed. Un-install the program, re-install the program and then retry
the download.

The field at the top of the graph lists detailed information for the
transferred readings (start time, mode, number of data points, alarm
high, alarm low, data sampling rate, weighting unit, record speed, MAX
reading, MIN reading, and AVG reading).
Zoom in:
1. Click the left mouse button and drag a rectangle around the data area to
be expanded.
2. Release the mouse button.
3. Use the horizontal scrollbar to scroll through all of the data.
4. Use the left vertical scrollbar to scroll through the sound data.
Zoom out: Zoom out to full view by clicking .
Configure the X and Y Axis.

Y Axis Setup: Input the desired data range.
X Axis Setup: Input the desired number of data points.
The graph will appear based on the corresponding settings.
Set the background color, grid color and sound
graph color.

Customize the graph window.
Check the items in the above list to view (sound and low/high alarms)
Check to add the x or y axes.
Mark Points: Use dots on the traces that represent the actual data points
(essentially breaking up the continuous nature of the traces).
Import data to list
Click the list icon to import data to a list format.

The list shows specific time and date with the data.
File save and open
Click the icon to open the file save dialog box.
2. Name the file and save it using the default extension. The file will be
saved with the
“.sound” extension to be reopened in the Datalogger software program
and also as a “.xls” file to be opened in a spreadsheet program.
To open an existing data file for viewing on the data graph window, click
the icon. When prompted, select a “.sound” file that was saved
earlier.
Print graph and list
Click the icon to print the graph.
Click the icon to import data to list, and then click to print
the list.

Specifications
Standard
Applied
IEC61672-1 CLASS2
Ac curacy
士1.4dB
Frequency Range
31.5Hz to 8 kH z
Dynamic Ra nge
50dB
MeasureRange
30dB to 130dB
Data Memory
129920
Sampling Ra te
1second to24 hours
Frequency
Weighting
A and C
TimeWeighting
FAST 125ms，SLOW 1Second
Microphone
1/2 inch electret condenser microphone
Operating
Indication
GreenLEDflash
Memory Full
Indication
Yellow LEDflash
Data Output
USBdata traffic
Power
One 3.6 battery, specs:14250 or 1/2AAA
Electric Current
When measuring:5.5mA;when periphery power
is o.ff or stop measuring:30uA
Operation
Temperature
An d Humidity
0 to40 ℃ (32 10 104°F
10%RHto 90%RH
Storage
Temperature
and Humidity
-10 to 60.C{14 to 140 °F }
10%RHto 75%RH
Dimension
130x 30 x25mm (5.1x 1.1x0.9")
Weight
20g (1oz)
System
Requirement
Windows2000 I XP I Vi sta/7/10
Minimum
Hardware
Requirement
8M EMS memory.
2M hard dis k， a free USBjack

Warranty
Triplett / Jewell Instruments extends the following warranty to the original purchaser of
these goods for use. Triplett warrants to the original purchaser for use that the products
sold by it will be free from defects in workmanship and material for a period of (1) one
year from the date of purchase. This warranty does not apply to any of our products
which have been repaired or altered by unauthorized persons in any way or purchased
from unauthorized distributors so as, in our sole judgment, to injure their stability or
reliability, or which have been subject to misuse, abuse, misapplication, negligence,
accident or which have had the serial numbers altered, defaced, or removed.
Accessories, including batteries are not covered by this warranty
Copyright ©2022 Triplett
www.triplett.com
Accessories
User manual. Battery windscreeen, CD
Transparent cap