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Related Manuals for Scarlet Tech ST-12D
Summary of Contents for Scarlet Tech ST-12D
- Page 1 ST-12D Sound Level Meter User Guide...
- Page 2 Precaution - Use the sound level meter gently, especially the microphone, which is a sensitive sensor. Avoid crashing, knocking, or hitting the device, and prevent water or oil from entering. - When using alkaline batteries, choose high-capacity options. Remember to remove the batteries if the sound level meter will not be used for more than one week to prevent potential issues.
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Page 3: Table Of Contents
Contents 1. Introduction-----------------------------------------------------------------------------1 2. Packing Content ------------------------------------------------------------------------2 3. Technical Specifications ---------------------------------------------------------------3 4. Overview --------------------------------------------------------------------------------4 4.1 Front View ----------------------------------------------------------------------4 4.2 Bottom View--------------------------------------------------------------------4 4.3 Keypad--------------------------------------------------------------------------5 5. Installation & Setup --------------------------------------------------------------------6 5.1 Preparation---------------------------------------------------------------------6 5.2 Power Supply ------------------------------------------------------------------6 5.3 Calibration----------------------------------------------------------------------7 5.4 Basic Operation -------------------------------------------------------------- 10 6. -
Page 4: Introduction
1. Introduction ST-12D is the Class 1 sound level meter that complies with IEC 61672:2013 standard. It has the capability to conduct precise noise measurements with its comprehensive sound analyzers, which calculate all the crucial parameters, such as Leq, Lpeak, Lmax,... -
Page 5: Packing Content
This certificate is produced with advanced equipment & procedures which permit comprehensive quality assurance verification of all data supplied herein. III.! This certificate of calibration shall not be reproduced except in full, without written permission of the Scarlet Tech Co Ltd Taiwan. 1. Preliminary inspection ! OK 2. -
Page 6: Technical Specifications
3. Technical Specifications Item Description Fulfils Standard IEC 61672-1: 2013 Class 1 Measurement Range 25 ~ 140 dB (143 dB C Peak) Time Weightings ( Fast, Slow, Impulse, I10 Frequency Weightings ( A, C, Z Integrating Analysis p, L max, L min, L eq,T, L eq,t, L... -
Page 7: Overview
4. Overview 4.1 Front View Microphone Windscreen (Windshield) clip Preamplifier Overload indicator Display Keypad 4.2 Bottom View I/O port USB type C Analog output SD card slot Warning LED indicator: (AC/DC) (Reserved) - Flash Green every 2 sec when power is on - Flash Red when the set threshold is reached... -
Page 8: Keypad
4.3 Keypad Button Definition Power Power ON/OFF Play (Pause) Start, pause or continue the measurement Delete Terminate measurement; Delete measurement record Left Navigate to the left Right Navigate to the right Select; Confirm Previous Change to the previous option Next Change to the next option Back Cancel;... -
Page 9: Installation & Setup
5.2 Power Supply External Power Supply ST-12D can be connected with external power through the USB-C socket (5V, 1A) at the lower right of the device. When connected, the internal battery will automatically be cut-off. The shell of the plug as the cathode and the core of the plug as the anode. For continuous long-term use of the device, it is recommended to use an external power supply. -
Page 10: Start Calibration
5.3 Calibration Calibrate the ST-12D with a 1 kHz Class 1 certified sound calibrator. Scarlet also offers a Class 1 sound calibrator called the ST-120. Detailed instructions for using the ST-120 are provided separately in the ST-120 user guide. Before Calibration: Check Calibration Settings 1. - Page 11 Calibration Status Definitions Status Definition Ready The status before initiating calibration Calibrating Calibration is in progress. A 10-second countdown timer is displayed alongside Finish Calibration is complete if the current sensitivity level is within or equal to 3 dB of the previous record Fail Calibration fails if the current sensitivity level exceeds the previous record by more than 3 dB...
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Page 12: Calibration History
Calibration History 1. Navigate to Calibrate history by pressing Previous or Next on the calibration menu. 2. The calibration records are displayed in a list by date, with the most recent record at the top. Delete a Specific Calibration Record 1. -
Page 13: Basic Operation
Power the ST-12D On & Off Power On the ST-12D 1. Press and hold Power for 3 sec to turn on the ST-12D. 2. The device will take a self check while booting and then enter Main Menu after ready for operation. - Page 14 5.5 Select Measurement Function 1. Press Left or Right to navigate to the Measure, then press OK 2. Press Left or Right to navigate to the Integral, then press OK to enter Integral analyzer. (See Operation Interface section for more details) 5.6 Setting the Parameters of the Analyzer to navigate to Settings icon.
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Page 15: Frequency Weighting
Select Weightings 1. On Analyzer, navigate to the bottom right corner. 2. Press Previous or Next to select Frequency Weighting or Time Weighting. Frequency Weighting Time Weighting Start Measurement 1. On Analyzer, press Play to start the measurement. 2. In the bottom status bar, Ts label will switch to Tm (indicating the measurement time) and display the elapsed measurement time in hr:min:sec. - Page 16 Pause a Measurement 1. Press Play (Pause) to pause while measurement is running. 2. The measurement will stop and can be resumed by pressing Play again. Terminate Measurement 1. Press Back while measurement is running. 2. A confirmation popup will appear; press OK to exit the analyzer and stop the measurement manually.
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Page 17: Measurement Status
5.8 Measurement Status Status Definition Ready The status before initiating measurement Measurement is in progress. The current or remaining measurement time is displayed in hr:min:sec at the bottom left corner Pause Measurement is paused. Press Play to resume Stop Measurement has ended. The results are automatically stored Wait Measurement has been initiated but has not yet reached the trigger point 5.9 Enable Audio Recording... - Page 18 5.10 Export Data through USB Drive Mode 1. Connect the ST-12D with your PC using the USB-C cable. 2. Navigate to Memory settings. 3. Navigate to USB drive mode by pressing Left or Right to switch the option to On to enable USB drive mode 4.
- Page 19 5.11 Automatically Print Data After Measurement in Bluetooth Mode 1. Ensure Bluetooth printer is successfully connected. (See Settings-Bluetooth section for more details) 2. Navigate to Printer settings and configure the following options, then press OK save: • Connect method: Bluetooth •...
- Page 20 5.12 Print Historical Data via Bluetooth Mode 1. Ensure Bluetooth printer is successfully connected. (See Settings-Bluetooth section for more details). 2. Navigate to Printer settings page and configure the following options, then press to save: • Connect method: Bluetooth • Printing mode: Graph or Text only •...
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Page 21: Operation Interface
6. Operation Interface After powering on the device (ST-12D), Main Menu will be displayed. The following figure illustrates the page structure shown on the device. • Use the Left or Right key to navigate. • Use the Previous or Next key to change the option where it is located. -
Page 22: Basic Components
ST-12D interface includes several universal components that appear consistently across pages, such as top status bar, navigation, and bottom status bar. The figure below labels the fundamental components of ST-12D operation interface, each of which is described in the following tables:... -
Page 23: Navigation
Navigation Item Definition Analyzer Show current analyzer; Press Previous or Next to switch analyzer Display view Show current display view; Press Previous or Next to switch view Analyzer settings View and adjust analyzer measure settings, includes measurement run time, trigger mode Bottom Status Item Definition... -
Page 24: Measure
6.2 Measure Each analyzer supports different display views. Refer to the following sections for details. Integral ST-12D supports three types of display view for Integrating analysis: Main, Chart, and List. Main View Item Definition Integrating analyzer Show current analyzer: Integrating; Press Previous... -
Page 25: Chart View
Chart View Item Definition Integrating analyzer Show current analyzer: Integrating; Press Previous or Next to switch analyzer Main display view Show current display view: Main; Press Previous or Next switch view Integrating settings View and adjust Analyzer measure settings, includes measurement run time, trigger mode Measurement run time Measurement time;... -
Page 26: List View
List View Item Definition Integrating analyzer Show current analyzer: Integrating; Press Previous or Next switch analyzer List display view Show current display view: List; Press Previous or Next switch view Integrating settings View and adjust Analyzer measure settings, includes measurement run time, trigger mode Measurement run time Measurement time;... -
Page 27: Statistics
Statistics ST-12D supports three types of display views: List, Chart1 (Statistical chart), and Chart2 (Accumulation chart). List View Item Definition Statistics analyzer Show current analyzer: Statistics; Press Previous or Next switch analyzer List display view Show current display view: List; Press Previous... - Page 28 Statistical Chart View Item Definition Statistics analyzer Show current analyzer: Statistics; Press Previous or Next switch analyzer List display view Show current display view: List; Press Previous or Next switch view Statistics settings View and adjust Analyzer measure settings, includes measurement run time, trigger mode Measurement run time Measurement time;...
- Page 29 Accumulation Chart View Item Definition Statistics analyzer Show current analyzer: Statistics; Press Previous or Next switch analyzer List display view Show current display view: List; Press Previous or Next switch view Statistics settings View and adjust Analyzer measure settings, includes measurement run time, trigger mode Measurement run time Measurement time;...
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Page 30: Exposure
Exposure All supported sound exposure parameter are listed in Exposure analyzer. Item Definition Exposure analyzer Show current analyzer: Exposure; Press Previous or Next switch analyzer Exposure settings View and adjust Analyzer measure settings, includes measurement run time, trigger mode Measurement run time Measurement time;... -
Page 31: 24-Hour Statistical Analyzer
24-Hour Statistical Analyzer The 24-hour analyzer supports a matrix table for a matrix table view in Page 1 and Page 2 display views for one-day measurements. Switch to List or Chart view to check the details for each hour. Table View Item Definition 24-hour statistics analyzer... - Page 32 List View Item Definition 24-hour statistics analyzer Show current analyzer: 24-hour Statistics Page1 display view Show current display view: List; Press Previous or Next switch view 24-hour statistics settings View and adjust Analyzer measure settings, includes measurement run time, trigger mode Measurement run time Measurement time;...
- Page 33 Chart View Item Definition 24-hour statistics analyzer Show current analyzer: 24-hour Statistics Page1 display view Show current display view: List; Press Previous or Next switch view 24-hour statistics settings View and adjust Analyzer measure settings, includes measurement run time, trigger mode Measurement run time Measurement time;...
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Page 34: Analyzer Settings
Analyzer Settings Each analyzer has specific settings, including measurement time, measurement trigger mode, and analyzer-specific configurations. Measurement Time Item Definition Measurement time setting Select measurement time; Press Previous or Next on Ts to switch options: 10s, 1min, 5min, 10min, 15min, 20min, 30min, 1h, 2h, 4h, 8h, 24h Measure time interval Set measurement time in hr:min:sec... - Page 35 Each analyzer supports different trigger modes. Item Definition Trigger by manual Start measurement by pressing Play Delay Set a trigger delay time after pressing Play , ranging from 0s to 99s Trigger by parameter Start measurement when the selected noise parameter exceeds the threshold Parameter Specify parameter and value that triggers the measurement;...
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Page 36: Data
Analyzer-Specific Settings Item Definition Ln (Percentile level) Statistical noise level, representing the percentage of time that sound level is exceeded, where n = 1 to 99. By default: Ln1 = L5, Ln2 = L10, Ln3 = L50, Ln4 = L90, Ln5 = L95 Exchange rate (Q) Energy-based average used for noise dose calculation Threshold level... - Page 37 View The Chart Data supports chart viewing. For example, with Statistics historical record, once you enter the report details page, press OK again to display the chart. Navigate to the next chart page by pressing Previous or Next Replay The Audio Record Data supports audio playback.
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Page 38: Settings
Change date and time, start menu; or restore to factory settings Scheduled power on/off Set automatic power-on and power-off schedule instrument information Device information of ST-12D Logging Select signal recording configuration (parameter & interval) Audio recording Select audio recording configuration... -
Page 39: Display
Display Item Definition Backlight Adjust the backlight duration. The default setting is Always on, or choose between 10 sec and 900 sec for automatic turn-off Brightness Adjust display brightness; Range from 4 (darkest) to 49 (brightest) LED Indicator Item Definition Alarm Turn warning LED function on or off. -
Page 40: Output Interface
Output Interface Item Definition Baud rate Select the connection baud rate: 115200, 9600, 4800 AC output Turn the AC (Alternating current) signal output function on or off. The default setting is Off. Press Previous or Next to switch modes; On: AC signal output is enabled;... -
Page 41: Bluetooth
Scarlet’s portable printer is 0000 (four zeros). Press OK to confirm. 5. Once the printer is successfully connected to the ST-12D, the Bluetooth icon in the top bar will turn into white, and the name of the connected printer will appear above the list. -
Page 42: Printer
Printer ST-12D supports pairing with a portable printer for a simple printout of measurement data. The printer can be wirelessly connected to the ST-12D via Bluetooth or connected with a printer cable. Item Options Definition Connect method Bluetooth / Serial port... -
Page 43: General
Date Set device date Time Set device time Language ST-12D currently supports English Startup page Select the first screen displayed after the device boots up: Menu, Integral, Statistics, Exposure, 24-Hour Factory reset Restore the device configuration to factory settings (data will remain);... -
Page 44: Logging
Logging Item Definition Logging Turn Logging function on or off. The default setting is Off. Press Previous Next to switch modes; On: Logging is enabled; Off: Logging is disabled Analyzer Select the logging analyzer: Integral, Statistic, 1/1 oct, 1/3 oct. The default is Integral Parameter Select the specific parameter or all parameters to log Interval... -
Page 45: Audio Recording
Audio Recording Item Definition Recording Turn Audio recording function on or off. The default setting is Off. Press Previous or Next to switch modes; On: Audio recording is enabled; Off: Audio recording is disabled Analyzer Select the recording analyzer: Integral, Statistic, Exposure, 1/1 oct, 1/3 oct. The default is Integral Format Choose the recording file format: .wav, .mp3... -
Page 46: Appendices
7. Appendices 7.1 Appendix A: Free-Field Response Nominal Free-Field Response in the Reference Direction of a Sound Level Meter with ST-12D Microphone at Approximate Reference Environmental Conditions... - Page 47 Free-field response using the ST-12D microphone (dB) Frequency (Hz) -70.0 -14.5 -14.5 12.5 -63.7 -11.6 -11.6 -56.6 -8.6 -8.6 -50.6 -6.4 -6.4 -45.0 -4.7 -4.7 31.5 -39.7 -3.3 -3.3 -34.4 -1.9 -1.9 -30.5 -1.6 -1.6 -26.5 -1.1 -1.1 -22.7 -0.8 -0.8...
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Page 48: Appendix B: Free-Field Response Of Sound Level Meter At Different Directions
7.2 Appendix B: Free-Field Response of Sound Level Meter at Different Directions Free-field response using the ST-12D microphone at different directions (dB) Frequency (Hz) 30° 60° 90° 120° 150° 180° 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000... -
Page 49: Appendix C: Windshield Effects
7.3 Appendix C: Windshield Effects Effect of the windshield Frequency(Hz) Frequency (Hz) Effect of the windshield (dB) 1000 1250 1600 2000 2500 3150 4000 -0.1 5000 6300 8000 -0.3 10000 -0.8 12500 -0.9 16000 -1.0 20000 -1.2... -
Page 50: Safety, Handling & Maintenance
8. Safety, Handling & Maintenance 8.1 Important safety information WARNING: Failure to follow these safety instructions could result in fire, electric shock, or other injuries, as well as damage to the sound level meter or other property. Please read all the safety information below before using the sound level meter. - Page 51 Scarlet Tech Co., Ltd. © 2024 Scarlet Tech Co., Ltd. All rights reserved. 4F-3, No. 347 , HePing E Rd, 2nd Sec, DaAn District, Taipei City 106, Taiwan info@scarlet.com.tw www.scarlet-tech.com version 241226...
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