Apr-09
35
Avantes
www.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
Spectrometer platform
AvaSpec-NIR256-
1.7
AvaSpec-NIR256-
2.2
AvaSpec-
NIR256-2.5
Optical Bench
Symmetrical Czerny-Turner, 50 mm focal length
Wavelength range
900 - 1750nm
1000 - 2200nm
1000-2500nm
Resolution
6.0 - 50 nm
10.0 - 60 nm
15.0-90 nm
Stray light
< 0.1%
Sensitivity (AvaLight-HAL, 8 µm fiber)
counts (16-bit AD) per ms integration
time
350
250
200
Detector
InGaAs linear
array, 256 pixels
InGaAs linear array with 2 stage TE-
cooling, 256 pixels
Signal/Noise
4000:1
1200:1
AD converter
16 bit, 500kHzHz
Integration time
0.52 ms
