The AvaSpec-NIR256 fiber optic spectrometers is based on the AvaBench-50 symmetrical Czerny-Turner design with a 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 three gratings with different dispersion and blaze angles enable applications in the 900- to 2500-nm range. The AvaSpec-NIR256 features a 16-bit AD converter and USB2.0 high-speed interface and is especially suitable for measuring in the near-infrared (NIR) range from 900- to 1750-nm, e.g., plastics and water absorbance.

The AvaSpec- NIR256-2.2/2.5 has a two-stage thermoelectrical Peltier-cooled InGaAs detector suitable for measuring in the NIR range from 1000 to 2200/2500 nm. Digital IO ports enable external triggering and control of shutter and pulsed light sources from the Avantes line of instruments.

The NIR256 series has a USB2 interface with fast data sampling of 940 spectra per second and data transfer in 1.56 msec; it also supports analog inputs and outputs. Optional wireless communication and an SD card for on-board saving of spectra can be added.

The NIR-256-1.7 runs on USB power. The NIR-256-2.2/2.5 comes in a desktop housing and runs on 100-240VAC. Both include AvaSoft-basic, a complete manual and USB interface cable. Multiple (up to 127) USB2 spectrometers with different detector types can be externally coupled.

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