The AvaSpec-NIR256 Fiber Optic Spectrometers is based on the AvaBench-50 symmetrical Czerny-Turner design with 256 pixel InGaAs Detector Array. The spectrometer has a fiber optic entrance connector (standard SMA, others possible), collimating and focusing mirror and diffractional grating. A choice of 3 gratings with different dispersion and blaze angles enable applications in the 900-2500nm range. The AvaSpec-NIR256 includes a 16 bit AD converter, and USB2.0 high speed interface. The AvaSpec- NIR256-1.7 is especially suitable for measuring in the NIR range from 900-1750nm applications, e.g. plastics and water absorbance. The AvaSpec- NIR256-2.2/2.5 have a 2-stage Thermo-electrical Peltier-cooled InGaAs detector, specially suitable for measuring in the NIR range from 1000-2200/2500nm.
Digital IO ports enable external triggering and control of shutter and pulsed light sources from the Avantes line of instruments.
The new AvaSpec-NIR256 series have a USB2 interface with fast datasampling of 940 spectra per second and datatransfer in 1.56 msec and supports analog in-and outputs as well. Optional Bluetooth® (-BT) communication and an SD card for on-board saving of spectra can be added. The AvaSpec-NIR-256-1.7 runs on USB power, the AvaSpec-NIR-256-2.2/2.5 comes in a desktop housing and runs on 100-240VAC. Both come with AvaSoft-basic, a complete manual and USB interface cable. Multiple (up to 127) USB2 spectrometers with different detector types can be externally coupled(see section multi-channel spectrometers).
Technical Data
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Spectrometer platform
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AvaSpec-NIR256-1.7
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AvaSpec-NIR256-2.2
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AvaSpec-NIR256-2.5
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Optical Bench
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Symmetrical Czerny-Turner, 50 mm focal length
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Wavelength range
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900 - 1750nm
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1000 - 2200nm
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1000 - 2500nm
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Resolution
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6.0 - 50 nm
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10.0 - 60 nm
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15-90 nm
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Stray light
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< 0.1%
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Sensitivity (AvaLight-HAL, 8 µm fiber) in counts (16-bit A/D)/µW per ms integration time
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350
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250
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200
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Detector
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InGaAs linear array, 256 pixels
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InGaAs linear array with 2 stage TE-cooling, 256 pixels
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Signal/Noise
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4000:1
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1200:1
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AD converter
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16 bit, 500kHzHz
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Integration time
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0.52 ms
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Interface
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USB 2.0 high speed, 480 Mbps
RS-232, 115.200 bps
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Sample speed with on-board averaging
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1.06 msec /scan
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Data transfer speed
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1.56 msec /scan
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Digital IO
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HD-26 connector, 2 Analog in, 2 Analog out, 3 Digital in, 12 Digital out, trigger, synchronization
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Power supply
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Default USB power, 350 mA Or with SPU2 external 12VDC, 350 mA
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External 100-240 VAC
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Dimensions
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175 x 165 x 85 mm
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9.5" desktop
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Grating selection table for AvaSpec-NIR256
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Useable range
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Spectral range (nm)
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Lines/mm
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Blaze (nm)
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Order code
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NIR
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900-1750
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750
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200
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1500
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NIRA
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NIR
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1000-2200
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980
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150
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2000
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NIRZ
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NIR
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1000-2500
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1470
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100
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2500
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NIRY
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Resolution table (FWHM) for AvaSpec-NIR256
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Slit size (µm)
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Grating (lines/mm)
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50
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100
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200
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500
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100
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15
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25
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50
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90
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150
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10
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15
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30
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60
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200
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6
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12
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24
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50
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Ordering Information
| AvaSpec-NIR256-1.7 |
Fiber Optic Spectrometer, 50 mm Avabench, 256 pixel InGaAs detector, USB powered high speed USB2 interface, incl. AvaSoft-Basic, USB interface cable, NIRA grating, 900-1750nm, OSF-1000, specify slit |
| AvaSpec-NIR256-2.2 |
Fiber Optic Spectrometer, 50 mm Avabench, 256 pixel InGaAs detector with 2stage TEC, high speed USB2 interface, incl. AvaSoft-Basic, USB interface cable, NIRZ grating, 1000-2200nm, OSF-1000, specify slit |
| AvaSpec-NIR256-2.5 |
Fiber Optic Spectrometer, 50 mm Avabench, 256 pixel InGaAs detector with 2stage TEC, high speed USB2 interface, incl. AvaSoft-Basic, USB interface cable, NIRY grating, 1000-2500nm, OSF-1000, specify slit |
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| Options |
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| BT |
Bluetooth® interface for USB2 platform only, including antenna |
| SDXXX |
Internal XXX MB SD card for on board data saving, for USB2 platform only |
| SLIT-XX |
Slit size, please specify XX = 50, 100, 200, 500 µm |
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