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​​SM240/SM440 Handheld CCD Spectrometer

The Choice for Spectral Applications


- Compact system, can be handheld or securely mounted
- Flexible optical input direct to slit or via fiber
- Designed from the ground up for applications
- Impact resistant housing
- High-performance electronics
- Standard design allows up to 850nm measurement window between 200nm and 1050nm.
- USB 1.1 and 2.0 interface with 16-bit dynamic range available
- Support up to 8 USB multi-channel configuration
UV enhancing coating (option)


The SM240/SM440 is a compact CCD Spectrometer for use with a PC. Based on the SM200/SM400 optical bench design, it supports many different applications where spectral or color measurements are required, including high dynamic range applications. The SM240/SM440 can accept light directly through its built-in slit or via optical fiber. The durable aluminum housing that encloses the SM240/SM440 provides stable optical bench operation over a wide range of temperatures.


The standard sensor arrays used are the Sony ILX 511 for SM240 and the Toshiba TCD1304 for SM440. The array driver electronics have been designed for highly sensitive yet stable operation. These arrays (in conjunction with our special UV coating process and custom order sorting filters) allow up to an 850nm measurement window located from 200nm to 1050nm (smaller measurement window sizes increase spectral resolution and light sensitivity). Standard interfaces to the SM240/SM440 include a USB 2.0 interface and a PCI card interface with a 16-bit dynamic range. Our USB board can support multichannel configurations up to 8. With this multichannel configuration, a high resolution for a wide range or a dual spectrometer system (one for measurement and the other for reference) is possible. Spectral Products applies a new UV enhancing coating on the CCD to increase the UV sensitivity below 450nm compared with the conventional UV coating that is widely used in CCD spectrometers. With the help of this new UV coating, the signal sensitivity below 500nm can get improved ~20-50% more in general. The black-anodized housing is available for OEM customers who are using the unit as it is with no need to install the optical bench and the electronic board separately (like SM200/SM400) in their systems. The electronic board is secured in the housing of the SM240/SM440, which is better for electronic noise protection. Software support includes an SDK and DLLs for dedicated applications development and our SM32Pro Windows-based spectral acquisition and analysis software. Both standard and legacy interface designs provide support for advanced acquisition programming and external triggering.


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Detector SONY ILX 511
Pixels: 2048
Sensing Pixel Size: 14um x 200um
Sensitivity: 200V (lx s) under 3200K uniform illumination
Toshiba TCD 1304
Pixels: 3648
Sensing Pixel Size: 8um x 200um
Sensitivity: 160V (lx s) under daylight fluorescent illumination
Spectral Resolution 0.15 to 10nm depending on the slit and grating choices
Spectral Range 200 - 1050nm
Spectrograph f# 2.7
Fiber Coupler SMA 905 or FC standard
Stray Light < 0.1% overall
Slit Options 5, 10, 25, 50, 100, 200, 400um
Orders Sorting Filter Longpass filter or linear variable filter installed per wavelength coverage
Computer Interface USB 1.1 / 2.0 16-bit (support up to 8 multi-channel configuration)

Windows 98/Me/2000/XP/VISTA/Win7/Win8.1/Win10 (both 32/64bit)

SM32Pro & SMProMX (free with spectrometer)
Includes DLL libraries and SDKs for easy custom application development

Dimensions 5.60H x 2.75W x 0.87D inches
Weight 0.9lbs
min. Integration Time 1ms 8ms
Dark Noise RMS < 50 RMS counts in 16bit @ 35msec integration time
Signal to Noise ratio 250 : 1
Trigger mode Free Run Mode
External Trigger Mode