CCT Spectrometer Series User Guide
Revision: A, Date: March 05, 2025
Chapter 1 Introduction
1.1 Intended Use
The CCT Spectrometer is designed for general laboratory use. Integrated routines allow averaging, smoothing, peak indexing, as well as saving and recalling data sets. The CCT Spectrometer may only be used in accordance with the instructions described in this user guide. Any other use will invalidate the warranty.
1.2 Explanation of Safety Warnings
⚠ Warning indicates a hazard with a medium level of risk that, if not avoided, could result in death or serious injury.
ⓘ Indicates information considered important, but not hazard-related, such as possible damage to the product.
The [CE/UKCA markings] on the product are the manufacturer's declaration that the product complies with the essential requirements of the relevant European health, safety, and environmental protection legislation.
The [WEEE symbol] on the product, the accessories or packaging indicates that this device must not be treated as unsorted municipal waste but must be collected separately.
1.3 Description
Thorlabs' compact, Czerny-Turner CCT Spectrometer is available in three versions. The CCT10 Spectrometer offers a wide 200 nm - 1000 nm spectral range. Two versions feature sub-nanometer accuracy and have a detection range of 350 nm - 700 nm (Item # CCT11) or 500 nm - 1000 nm (Item # CCT12).
With a small footprint (112.0 mm x 93.8 mm x 41.5 mm), all units share features with larger spectrometers such as synchronization via a TTL trigger input and automatic compensation for dark current noise. The CCT Spectrometer features a shutter for background subtraction, optimizing the signal-to-noise ratio (SNR). It is equipped with a low jitter trigger input and output, crucial for applications like Laser-Induced Breakdown Spectroscopy. Additionally, it offers USB and Ethernet connections for flexible integration and data transfer.
ThorSpectra Software
The Thorlabs ThorSpectra Software fully supports the remote control of the CCT Spectrometer in direct, transmittance, and absorbance measurements, and also supports other Thorlabs optical spectrum analyzers.
1.3.1 Ordering Codes and Accessories
| Item # | Description |
|---|---|
| CCT10 | Compact Spectrometer, Broadband, 200 - 1000 nm, <2.0 nm Resolution |
| CCT11 | Compact Spectrometer, Visible, 350 - 700 nm, <0.5 nm Resolution |
| CCT12 | Compact Spectrometer, NIR, 500 - 1000 nm, <0.6 nm Resolution |
| CAL-CCT | Recalibration Service for CCT Series Compact Spectrometers |
Included Accessories
NOTICE: Use of Optical Fibers! Make sure to use the CCT Spectrometer only with the included optical fiber. The use of a different optical fiber will affect the amplitude correction calibration.
| Item # | Description |
|---|---|
| M111L02 | 105 m, 0.22 NA, SMA-SMA Fiber Patch Cable, 2 m Long; CCT10 Only |
| M14L02 | 50 m, 0.22 NA, SMA-SMA Fiber Patch Cable (Contains Item # FG050UGA Optical Fiber), High OH, 2m Long; CCT11 Only |
| 50 m, 0.22 NA, SMA-SMA Fiber Patch Cable, Low OH, 2 m Long; CCT12 Only |
Optional Accessories
| Item # | Description |
|---|---|
| CL4 | Compact Table Clamp for Tight Spaces |
| Cap Screw M6 x 1.0 (1/4"-20); Length Depends on Use Case |
1.4 Technical Data
1.4.1 Specifications
All technical data are valid at 23 5 C and 45 15% relative humidity (non-condensing).
| Item # | CCT10 | CCT11 | CCT12 |
|---|---|---|---|
| Optical Wavelength Range | 200 - 1000 nm | 350 - 700 nm | 500 - 1000 nm |
| Resolution Slit (W x H) | <2.0 nm | <0.5 nm 20 m x 1 mm | <0.6 nm |
| Number of Pixels on Detector | 2048 | 4096 | |
| Detector Technology | CMOS | ||
| Dark Noise (RMS) | 12 Counts | 14 Counts | |
| Scan Rate (GUI Limited) | 35 Hz | ||
| Stray Light | 0.2% | 0.3% | |
| Internal Shutter Switching Time | <10 ms | ||
| Sensor Integration Time | 0.01 ms - 30 000 ms (10 s - 30 s) | ||
| Internal Average | 10 000 frames | ||
| Signal to Noise Ratio | 330:1 | 300:1 | |
| Dynamic Range | 5100 | 4500 | |
| Trigger Input Connector | Female SMA Connector | ||
| Trigger Output Connector | Female SMA Connector | ||
| Trigger Level | 3.3 V TTL | ||
| Trigger Jitter | 1 s | ||
| Interface | USB 2.0 or Higher, Ethernet IPv4 | ||
| Operating Temperature Rangea | 0 C to 40 C | ||
| Storage Temperature Range | 0 C to 40 C | ||
| Dimensions (L x W x H) | 112.0 mm x 93.8 mm x 41.5 mm (4.41" x 3.69" x 1.63") | ||
| Weight | 0.5 kg (1.1 lbs) | ||
| Fiber Connector | SMA 905 | ||
a. Non-condensing
1.4.2 Mechanical Drawing
Description of Figure 1: Mechanical Drawing for the CCT Series Spectrometer. This diagram illustrates the physical dimensions and key features of the spectrometer unit, including mounting points and connector locations.
1.5 Components
Front Panel
Description of Figure 2: Front Panel of the CCT Series Spectrometer.
- 1: Female SMA Connector (Input for "Trigger" IN)
- 2: Female SMA Connector (Output for "Trigger" OUT)
- 3: USB Type-C Connector (USB 2.0 Type-C for Remote Operation or Software Control)
- 4: SMA 905 Connector (Input Connector for Fiber)
- 5: RJ45 Connector (Ethernet Interface for Remote Operation or Software Control)
- 6: Status LED (Indicates Device Status: White = "Active" State / Device Is Ready for Operation)
Top Panel
Description of Figure 3: Top Panel of the CCT Series Spectrometer.
- 1: Mounting Hole 1 (Mounting Option for Cap Screw M6 x 1.0 or 1/4"-20)
- 2: Mounting Hole 2 (Mounting Option for Cap Screw M6 x 1.0 or 1/4"-20)
1.6 Simplified Declaration of Conformity
The full text of the EU declaration of conformity is available at the following internet address: https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=3482
Chapter 2 Safety
The safety of any system incorporating the equipment is the responsibility of the assembler of the system. All statements regarding safety of operation and technical data in this instruction manual will only apply when the unit is operated correctly as it was designed for.
⚠ WARNING: Risk of Serious Injury and Even Death Due to Explosion! The CCT Spectrometer must not be operated in explosion endangered environments!
Chapter 3 Installation
3.1 Warranty and RMA Information
This precision device is only serviceable if returned and properly packed into the complete original packaging including the complete shipment plus the cardboard insert that holds the enclosed devices. If necessary, ask for replacement packaging. Refer servicing to qualified personnel.
General Terms and Conditions: https://www.thorlabs.com/Images/PDF/LG-PO-001_Thorlabs_terms_and_%20agreements.pdf and https://www.thorlabs.com/images/PDF/Terms%20and%20Conditions%20of%20Sales_ThorlabsGmbH_English.pdf
3.2 Packing List
The following items are included in the CCT10 Spectrometer package: CCT10 Spectrometer, USB 2.0 Type-C to Type-A Cable (2 m), Fiber Patch Cable SMA-SMA (Item # M111L02, 2 m), Test Report, Certificate of Calibration, Printed Quick Reference.
The following items are included in the CCT11 Spectrometer package: CCT11 Spectrometer, USB 2.0 Type-C to Type-A Cable (2 m), Fiber Patch Cable SMA-SMA (Contains Item # FG050UGA Optical Fiber, 2 m), Test Report, Certificate of Calibration, Printed Quick Reference.
The following items are included in the CCT12 Spectrometer package: CCT12 Spectrometer, USB 2.0 Type-C to Type-A Cable (2 m), Fiber Patch Cable SMA-SMA (Item # M14L02, 2 m), Test Report, Certificate of Calibration, Printed Quick Reference.
3.3 Unpacking Instructions
Please inspect the shipping container for damage. Do not cut through the cardboard, as the box might be needed for storage or returns. If the shipping container appears to be damaged, keep it until you have inspected the contents for completeness and tested the CCT Spectrometer mechanically and electrically. Verify that you have received the items listed in the chapter Packing List within the package.
3.4 Installing Instructions
- Place the CCT Spectrometer onto a stable, dry surface. The unit should be positioned less than 1.5 m (59.1") from the PC and less than 1.0 m (39.4") from the light source due to cable lengths.
- Download and install the ThorSpectra Software on the PC.
- Connect the CCT Spectrometer to the PC using the included USB 2.0 cable. If a USB Type-A port is unavailable, use a shielded USB Type-C cable.
- Start the ThorSpectra Software. The CCT Spectrometer is now ready for operation and recognized by the software. The operating system loads the appropriate USB drivers. Refer to the ThorSpectra Software manual for detailed instructions.
3.4.1 Mounting with Compact Table Clamps
Description of Figure 4: Mounted CCT Spectrometer with Compact Table Clamps on Breadboard. This illustrates the process of attaching the spectrometer to a breadboard using compact table clamps.
- Place the CCT Spectrometer vertically on the breadboard.
- Place the table clamps (Item # CL4) in the mounting pockets of the CCT Spectrometer.
- Align the CCT Spectrometer with the table clamps on the breadboard, ensuring the slotted holes of the table clamps match the threaded holes on the breadboard.
- Mount the cap screws with washers.
3.4.2 Mounting with Cap Screws via Mounting Pockets
Description of Figure 5: Mounted CCT Spectrometer with Cap Screws on Breadboard. This shows the method of securing the spectrometer using cap screws.
ⓘ NOTICE: Damage to the CCT Spectrometer! Excessive tightening torque can cause cracks or breaks in the CCT Spectrometer, impairing its function and leading to costly repairs. Use a torque wrench and ensure the recommended torque is not exceeded.
- Place the CCT Spectrometer on the breadboard.
- Mount the cap screws.
Maximum Tightening Torque for Cap Screws: 0.5 Nm (4.4 lb-in)
3.5 Return of Devices
This precision device is only serviceable if returned and properly packed into the complete, original packaging including the cardboard insert that holds the enclosed devices.
Chapter 4 ThorSpectra Software
The ThorSpectra Software is designed for straightforward use with the CCT Spectrometer. Specific instructions are provided in the chapters "Connecting CCTxx Spectrometer Series to ThorSpectra Software" and "Device Settings in ThorSpectra". For general instructions, refer to the ThorSpectra Software user guide, available for download from the Thorlabs website.
4.1 Software Requirements
Minimum Hardware Requirements:
- Processor (CPU): Intel Core i5 or AMD Athlon II
- Memory (RAM): 8 GB
- Monitor Resolution: 800 x 600 Pixels
- Hard Drive: 2 GB of Available Disk Space
- Interface: Free High-Speed USB 2.0 or Higher, Type-A or Type-C Connector
Software Requirements:
- Operating Systems: Windows® 10 (64-Bit), Windows® 11
- Microsoft .NET Framework: version 4.7.2 or higher is required.
4.2 Software Installation
The ThorSpectra Software, which supports the CCT Spectrometer, is available for download from the Thorlabs website. As part of Thorlabs' green initiative, physical data carriers are no longer shipped. Current and previous versions are always available online.
ⓘ NOTICE: Clean Installation! The installation package includes spectrometer-specific drivers and software that must be installed before the CCT Spectrometer is connected to the PC for the first time. Administrator privileges are required. Do not connect the CCT Spectrometer during installation. Exit all running applications and follow any reboot requests.
- Download the ThorSpectra Software from the website.
- Save the ZIP-file to your PC.
- Unpack the ZIP-file.
- Run setup.exe to install the ThorSpectra Software.
- Read and accept the End-User License Agreement and the GNU Lesser General Public License.
- After installation, connect the CCT Spectrometer via USB to the PC.
- Start the ThorSpectra Software from the desktop icon.
4.3 Connecting the CCT Spectrometer to ThorSpectra Software
There are two connection methods: USB Type-C and Ethernet. The first connection must always be made via USB. USB connection has priority over Ethernet.
4.3.1 Connecting via USB
Description of Figure 6 & 7: Screenshots of the ThorSpectra Software interface, showing connection status and measurement spectra.
- Connect the CCT Spectrometer via USB Type-C cable to the PC.
- Open the installed ThorSpectra Software. The CCT Spectrometer will be immediately recognized. If the device is connected while the software is open, select the "Connect Devices" button.
- In ThorSpectra, select the device and ensure the "Show", "Set as Active", and "Write" options are checked.
- Increase the integration time until the spectrum is displayed.
- Right-click into the data display area to auto-zoom the intensity axis to fit the spectrum.
4.3.2 Connecting via Ethernet
Description of Figure 8, 9, 10: Screenshots of the ThorSpectra Software for Ethernet connection configuration.
Note: The first connection must always be made via USB.
- Ensure the correct IP configuration settings are specified (consult your IT department if necessary).
- Click the "Apply Settings" button to save IP address changes.
- Boot the CCT Spectrometer to adopt the new IP address settings.
- Connect the CCT Spectrometer to a proper Ethernet port. The spectrometer will function with ThorSpectra Software as if connected via USB.
Optional: If the CCT Spectrometer IP address is in a different IP subnet than the PC, enter the IPv4 address in the System tab and click "OK" or "Apply Settings".
4.4 Device Settings in ThorSpectra
The following device settings can be configured with the ThorSpectra Software:
- Acquisition
- Wavelength Calibration
- Amplitude Correction
- Ethernet & USB Connection
- Advanced & Reset
4.4.1 Acquisition
Description of Figure 11: Screenshot of the Acquisition Tab in ThorSpectra Software. This section allows users to configure acquisition parameters such as integration time, averaging, smoothing, and peak indexing.
4.4.2 Wavelength Calibration
Description of Figure 12: Screenshot of the Wavelength Calibration Tab. This section details the process for performing wavelength calibration.
The CCT Spectrometer uses a CMOS line array sensor. Factory calibration maps wavelengths to specific pixels. User calibration can be performed using an available calibrated spectral source for 4 to 10 individual calibration points, replacing the factory calibration.
Calibration Steps:
- Apply the spectral source to the CCT Spectrometer input.
- Adjust the integration time to display maximum intensities without saturation.
- In ThorSpectra Software, open the "Device" interface and activate the "Wavelength Calibration" tab.
- Mark calibration points in the spectrum (left side). The peak is marked by a blue cross, and the pixel number is displayed.
- Move the mouse to the peak, right-click, and enter the corresponding wavelength in the "Calibration Point" panel.
- Select "Add/Update". The table will be updated. Repeat for up to 10 calibration points.
- Press "Save". User calibration points are stored in the spectrometer's EEPROM alongside the factory calibration.
- Switch between Factory and User Calibration by checking the "Enable User Wavelength Calibration" box. A new user calibration will overwrite the previous one.
4.4.3 Amplitude Correction
Description of Figure 13: Screenshot of the Amplitude Correction Tab. This tab allows users to activate the amplitude correction function using a checkbox.
4.4.4 Ethernet & USB Connection
Description of Figure 14: Screenshot of the Ethernet & USB Connection Tab. This section contains the connection settings for the CCT Spectrometer to the ThorSpectra Software via Ethernet or USB.
4.4.5 Advanced & Reset
Description of Figure 15: Screenshot of the Advanced & Reset Tab. This section displays information such as ADC Offset, current spectrometer temperature, firmware version, Electronic Board ID, Driver Software Version, and provides an option to Reset to Factory Settings.
Chapter 5 Custom Software
The Software Development Kit (SDK) for the CCT Spectrometer Series is built on the same software libraries (CCT Instrument Driver) that power the CCT Plugin for ThorSpectra Software. The CCT SDK includes tools and examples for various programming environments.
The CCT Instrument Driver is based on the .NET Platform and is cross-platform for .NET 8. It supports .NET Framework versions 4.8 and 4.7.2.
Programming Environments and Resources:
| Programming Environment | Summary of Resources |
|---|---|
| .NET (C#) | DLL Libraries, NuGet Packages, Example Console Application Written on C# |
| Python | Plain Script, Pip Package |
| LabVIEW™ | VI in LLB Container, Project File to Run Example Application |
Specific paths for examples are provided within the ThorSpectra Software installation directory (e.g., Examples\CompactSpectrometer\CSharp, Examples\CompactSpectrometer\Python, Examples\CompactSpectrometer\LabView).
Chapter 6 Maintenance and Cleaning
ⓘ NOTICE: Risk of Damaging the CCT Spectrometer! The CCT Spectrometer is not water resistant. If the CCT Spectrometer comes into contact with fluids, it can be damaged. To avoid damage, do not expose the CCT Spectrometer to sprays, liquids, solvents, or adverse weather conditions.
The unit does not require regular user maintenance and contains no user-serviceable components. If a malfunction occurs, refer to the "Return of Devices" section and contact Thorlabs for return instructions. Do not remove covers.
6.1 Recalibration Service for CCT Spectrometer Line
Thorlabs offers a wavelength recalibration and amplitude correction service for the CCT Series Spectrometers (Item # CAL-CCT). Recalibration is recommended every 12 months to ensure accurate measurements. Amplitude correction should be updated whenever a new patch cable is used. When sending the device for recalibration, include the patch cable. Contact Thorlabs Tech Support for more information.
Chapter 7 Disposal
Thorlabs verifies compliance with the WEEE (Waste Electrical and Electronic Equipment) directive. End-of-life Annex I category electrical and electronic equipment sold after August 13, 2005, can be returned to Thorlabs within the EC without disposal charges, provided units are marked with the [WEEE symbol], owned by an EC company/institute, and are not disassembled or contaminated. Contact Thorlabs for more information.
Waste treatment is the user's responsibility. "End of life" units must be returned to Thorlabs or handed to a company specializing in waste recovery. Do not dispose of the unit in a litter bin or at a public waste disposal site. It is the user's responsibility to delete all private data stored on the device prior to disposal.
Chapter 8 Thorlabs Worldwide Contacts
For technical support or sales inquiries, please visit www.thorlabs.com/contact for the most up-to-date contact information.
Corporate Headquarters:
Thorlabs, Inc.
43 Sparta Ave
Newton, New Jersey 07860
United States
Email: sales@thorlabs.com, techsupport@thorlabs.com
EU Importer:
Thorlabs GmbH
Münchner Weg 1
D-85232 Bergkirchen
Germany
Email: sales.de@thorlabs.com, europe@thorlabs.com
Product Manufacturer:
Thorlabs GmbH
Münchner Weg 1
D-85232 Bergkirchen
Germany
Email: sales.de@thorlabs.com, europe@thorlabs.com
UK Importer:
Thorlabs Ltd.
204 Lancaster Way Business Park
Ely CB6 3NX
United Kingdom
Email: sales.uk@thorlabs.com, techsupport.uk@thorlabs.com
mailto:europe@thorlabs.com
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