Apr-09 35
Avantes www.avantes.com info@avantes.com
2.9 AvaSpec-NIR256 Near-Infrared Fiber Optic Spectrometer
AvaSpec-NIR256
The AvaSpec-NIR256 Fiber Optic
Spectrometer 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.
Technical Data
Symmetrical Czerny-Turner, 50 mm focal length
Sensitivity (AvaLight-HAL, 8 µm fiber)
counts (16-bit AD) per ms integration
time
InGaAs linear
array, 256 pixels
InGaAs linear array with 2 stage TE-
cooling, 256 pixels
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