The AvaSpec-NIR256-2.0/2.2/2.5 Fiber Optic Spectrometers are based on the AvaBench-50 symmetrical Czerny-Turner design with 256 pixel TE Cooled extended InGaAs Detector Arrays. The spectrometer has a fiber optic entrance connector (standard SMA, others possible), collimating and focusing mirror and diffractional grating. A choice of 4 gratings with different dispersion and blaze angles enables applications in the 900-2500nm range. The AvaSpec-NIR256-2.0/2.2/2.5 includes a 16 bit AD converter, and USB2.0 high speed interface. The AvaSpec- NIR256-2.0/2.2/2.5 have a 2-stage Thermo-electrical Peltier-cooled InGaAs detector, specially suitable for measuring in the NIR range from 1000-2000/2200/2500nm. The newly added AvaSpec-NIR256-2.0 has a very low dark noise level and therefore a much longer integration time can be used for low light level applications. Digital IO ports enable external triggering and control of shutter and pulsed light sources from the Avantes line of instruments.
The AvaSpec-NIR256 series have a USB2 interface with fast datasampling of 940 spectra per second and datatransfer in 1.56 ms and supports analog in- and outputs as well. Optional BluetoothÒ (-BT) communication and an SD card for on-board saving of spectra can be added. The AvaSpec-NIR-256-2.0/2.2/2.5 come in a desktop housing and run on 100-240VAC. They 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
| Spectrometer platform |
AvaSpec-NIR256-2.0 |
AvaSpec-NIR256-2.2 |
AvaSpec-NIR256-2.5 |
| Optical Bench |
Symmetrical Czerny-Turner, 50 mm focal length |
| Wavelength range |
1000 - 2000nm |
1000 - 2200nm |
1000 - 2500nm |
| Resolution |
6.0 - 60 nm |
6.0 - 60 nm |
6.0-90 nm |
| Stray light |
< 0.1% |
| Sensitivity (AvaLight-HAL, 8 µm fiber) in counts (16-bit A/D)/µW per ms integration time |
250 |
250 |
200 |
| Detector |
InGaAs linear array with 2 stage TE-cooling, 256 pixels |
| Signal/Noise |
1500:1 |
| AD converter |
16 bit, 500kHzHz |
| Integration time* |
0.52 ms- 6 seconds |
0.52-350 ms |
0.52-100 ms |
| Interface |
USB 2.0 high speed, 480 MbpsRS-232, 115.200 bps |
| Sample speed with on-board averaging |
1.06 ms /scan |
| Data transfer speed |
1.56 msec /scan (USB2)60 ms / scan (RS-232) |
| Digital IO |
HD-26 connector, 2 Analog in, 2 Analog out, 3 Digital in, 12 Digital out, trigger, synchronization |
| Power supply |
100-240 VAC, 50/60Hz, 35 W |
| Dimensions, weight |
315 x 235 x 135 mm, 5.1 kg |
*Integrating time with TE cooling set to -20°C
Grating selection table for AvaSpec-NIR256-2.0/2.2/2.5
|
Use
|
Useable range
|
Spectral range (nm)
|
Lines/mm
|
Blaze (nm)
|
Order code
|
|
NIR
|
1000-2500
|
1470
|
100
|
2500
|
NIR100-2.5
|
|
NIR
|
1000-2200
|
980
|
150
|
2000
|
NIR150-2.0
|
|
NIR
|
900-1750
|
750
|
200
|
1500
|
NIR200-1.5
|
|
NIR
|
1700-2500
|
650
|
200
|
2600
|
NIR200-2.6
|
Resolution table (FWHM) for AvaSpec-NIR256-2.0/2.2/2.5
|
Slit size (µm)
|
| Grating (lines/mm) |
50 |
100 |
200 |
500 |
| 100 |
15 |
25 |
50 |
90 |
| 150 |
10 |
15 |
30 |
60 |
| 200 |
6-8 |
12 |
24 |
50 |
Ordering Information
| AvaSpec-NIR256-2.0 |
Fiber Optic Spectrometer, 50 mm Avabench, 256 pixel InGaAs detector with 2stage TEC, USB powered high speed USB2 interface, incl. AvaSoft-Basic, USB interface cable, specify grating and wavelength range, 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, specify grating and wavelength range, 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, specify grating and wavelength range, OSF-1000, specify slit |
| Options |
|
| 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 |
|
