18
Apr-09
Avantes
www.avantes.com
2.2
AvaSpec-256 Fiber Optic Spectrometer
AvaSpec-256
The AvaSpec-256 Fiber Optic Spectrometer is
based on the AvaBench-45 symmetrical Czerny-
Turner design with 256 pixel CMOS Detector
Array. The spectrometer has a fiber optic
entrance connector (standard SMA, others
possible), collimating and focusing mirror and
diffractional grating. A choice of 13 different
gratings with different dispersion and blaze
angles enable applications in the 200-1100nm
range. The AvaSpec-256 can be delivered with
2 platforms of electronics; either with USB1.1
with 14 bit AD converter or the new USB2.0
interface with 16 bit AD converter.
The AvaSpec-256 is specially suitable for low
noise applications. Digital IO ports enable external triggering and control of shutter and pulsed light
sources from the Avantes line of instruments.
The AvaSpec-256 is also available as dual channel or multiple channel instrument (up to 8 channels),
where all spectra are taken simultaneously.
The AvaSpec-256 comes with AvaSoft-basic, a complete manual, USB interface cable and a PS-
12V/1.0A power supply. AvaSoft-full and application software can be ordered separately.
Alternatively the AvaSpec-256-SPU has a switch to run on USB power or external power.
The new AvaSpec-USB2 has a USB2 interface with ultrafast datasampling of 1500 spectra per second
(with on board averaging) and datatransfer in 1.5msec 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-256-USB2 runs on USB power and comes with AvaSoft-basic, a complete manual
and USB interface cable. Multiple (up to 127) USB2 spectrometers with different detector types can
be externally coupled. AvaSoft-full and application software can be ordered separately.
Technical Data
Spectrometer platform
AvaSpec-256
AvaSpec-256-USB2
Optical Bench
Symmetrical Czerny-Turner, 45 mm focal length
Wavelength range
200-1100 nm
Resolution
0.4 –64 nm, depending on configuration (see table)
Stray light
< 0.2%
Sensitivity (AvaLight-HAL, 8 µm fiber)
counts/µW per ms integration time
30 (14-bit AD)
120 (16-bit AD)
Detector
CMOS linear array, 256 pixels
Signal/Noise
2000:1
AD converter
14 bit, 330 kHz
16 bit, 500 kHz
Integration time
2 msec – 60 seconds
0.6 msec – 10 minutes
SMA
entrance connector
