• New compact model with new CCD
• Can be handheld or securely mounted
• Flexible optical input direct to slit or via fiber
• Designed from the ground up for a wide range of applications
• Impact resistant housing
• High performance electronics
• Standard design allows up to 200-1050nm range
• USB 1.1/2.0 interface with 16-bit dynamic range available!

The SM442 is a new compact design CCD Spectrometer for use with a PC. Based on SP's special optical bench design, it supports many different applications where spectral or color measurements are required, including high dynamic range applications.

The SM442 can accept light directly through its built-in slit or via optical fiber. A removable faceplate allows the use of standard SMA 905, FC, and custom fiber connectors. This faceplate also allows direct attachment to dedicated systems and a number of SMX Accessories. The durable aluminum housing that encloses the SM442 provides stable optical bench operation over a wide range of temperatures.

The standard sensor array used is the Toshiba TCD 1304. The array driver electronics have been designed for highly sensitive yet stable operation. This array (in conjunction with our special UV coating process and customized order sorting filters) allows up to a 850nm measurement window from 200nm to 1050nm (smaller measurement window sizes increase spectral resolution and light sensitivity). Thanks to increased pixel numbers from 2048 of old Sony CCD to 3648, the SM442 allows almost twice better resolution with narrower slit than the SM242.

Standard interface to the SM442 is a USB 1.1/2.0 compatible interface with 16-bit extended dynamic range.

The SM442 is a pre-configured model so if the desired wavelength range matches one of the standard wavelength ranges, SP can ship the unit within a couple of days.

Software support includes a SDK and DLLs for dedicated applications development and our SM32Pro Windows-based spectral acquisition and analysis software.

Software

• SM32Pro - Windows® 95/98/2000/NT/XP-based software for data acquisition and analysis
• Transmission, reflectance, and absorbance measurements
• Data export, zoom in and out, spectrum overlays, and many more features
• Color analysis tools included
• Signal average and integration time control
• DLL libraries available for easy user software development in DOS and Windows®
• VC++/VB/Labview examples available

Feature	Value
Detectors:	Toshiba CCD Linear Array Number of Pixels: 3648 Sensing Pixel Size: 8μm x 200μm Sensitivity: 160 V/(lx s) @ 660nm
Dimensions (inches):	3.82 (h) x 2.60 (w) x 1.85 (d)
Weight:	0.5 lbs ARO.
Standard Spectral Ranges:	UV: 200-400nm / 200-450nm / 200-600nm VIS: 350-700nm / 380-760nm / 400-800nm VIS/NIR: 650-1050nm / 550-1050nm / 350-1050nm UV/VIS: 200-700nm / 300-800nm / 200-850nm UV/VIS/NIR: 200-950nm / 300-1050nm / 200-1050nm other ranges are also configurable from 200nm to 1050nm
Spectral Resolution:	0.10 - 10nm dependent on spectral range, slit width, and fiber diameter
Available Gratings:	See Appendix A
Entrance:	Fiber: SMA 905 or FC fiber coupler 50-600μm core Ø fiber NA = 0.2 Slit: 5, 10, 25, 50, 100, 200 or 400μm
Dynamic Range:	16 bit or 65536:1
Signal to Noise Ratio:	>1300:1 (Root-Mean-Square), >400:1 (Peak-to-Valley)
Integration Time:	0.01 millisecond to 65 seconds
Computer Interface:	USB 1.1/2.0 compatible, 16 bit A/D
Temperature Range:	15°C to 40°C
Stray light:	<0.1% (typical)
Software:	SM32Pro