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 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 AvaSpec-USB2 has a USB2 interface with ultrafast datasampling of 1500 spectra per second (with on-board averaging) and datatransfer in 1.5ms 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 (see section multi-channel spectrometers, page 37).
Technical Data
|
Spectrometer platform
|
AvaSpec-256
|
AvaSpec-256-USB2
|
|
Optical Bench
|
Symmetrical Czerny-Turner, 45 mm focal length
|
|
Wavelength range
|
200-1100 nm
|
|
Resolution
|
0.5 -79 nm, depending on configuration (see table)
|
|
Stray light
|
< 0.2%
|
|
Sensitivity (AvaLight-HAL, 8 µm fiber) in counts/µW per ms integration time
|
30 (14-bit AD)
|
120 (16-bit AD)
|
|
Detector
|
CMOS linear array, 256 pixels
|
|
Signal/Noise
|
700:1
|
|
AD converter
|
14 bit, 330 kHz
|
16 bit, 500 kHz
|
|
Integration time
|
1 ms - 60 seconds
|
0.6 ms - 10 minutes
|
|
Interface
|
USB 1.1, 12 Mbps
RS-232, 115.200 bps
|
USB 2.0 high speed, 480 Mbps
RS-232, 115.200 bps
|
|
Sample speed with on-board averaging
|
4 ms / scan
|
0.6 ms /scan
|
|
Data transfer speed
|
7-9 ms / scan (depending on # pixels transferred)
|
1.5 ms / scan (USB2)
60 ms / scan (RS-232)
|
|
Digital IO
|
DB-15 connector, 2 Digital in, 12 Digital out
|
HD-26 connector, 2 Analog in, 2 Analog out, 3 Digital in, 12 Digital out, trigger, sync.
|
|
Power supply
|
12 VDC, reverse polarity protection, 160 mA (PS-12V/1.0A) or 5VDC USB power
|
Default USB power, 350 mA
Or with SPU2 external 12VDC, 350 mA
|
|
Dimensions, weight
|
175 x 110 x 44 mm (1 channel), 716 grams
|
175 x 110 x 44 mm(1 channel), 716 grams
|
Grating selection table for AvaSpec-256
|
Use
|
Useable range
|
Spectral range (nm)
|
Lines/mm
|
Blaze (nm)
|
Order code
|
|
UV/VIS/NIR
|
200-1100*
|
900*
|
122
|
UV
|
UZ
|
|
UV/VIS/NIR
|
200-1100
|
400
|
300
|
300
|
UA
|
|
UV/VIS
|
200-850
|
200
|
600
|
300
|
UB
|
|
UV
|
200-750
|
100
|
1200
|
250
|
UC
|
|
UV/VIS
|
250-850
|
200
|
600
|
400
|
BB
|
|
VIS/NIR
|
300-1100*
|
800*
|
150
|
500
|
VZ
|
|
VIS/NIR
|
300-1100
|
400
|
300
|
500
|
VA
|
|
VIS
|
360-1000
|
200
|
600
|
500
|
VB
|
|
VIS
|
300-800
|
100
|
1200
|
500
|
VC
|
|
NIR
|
500-1050
|
200
|
600
|
750
|
NB
|
|
NIR
|
500-1050
|
100
|
1200
|
750
|
NC
|
|
NIR
|
600-1100
|
400
|
300
|
1000
|
IA
|
|
NIR
|
600-1100
|
200
|
600
|
1000
|
IB
|
* please note that not all 256 pixels will be used for the useable range
Resolution table (FWHM) for AvaSpec-256
|
Slit size (µm)
|
|
Grating (lines/mm)
|
25
|
50
|
100
|
200
|
500
|
|
122
|
5.5
|
7.9
|
15.7
|
32.0
|
79.0
|
|
150
|
4.5
|
6.4
|
12.8
|
26.0
|
64.0
|
|
300
|
2.5
|
3.2
|
6.4
|
13.0
|
32.0
|
|
600
|
1.0
|
1.5
|
3.0
|
6.0
|
16.0
|
|
1200
|
0.5
|
0.8
|
1.5
|
3.0
|
8.0
|
Ordering Information
| AvaSpec-256 |
Fiber Optic Spectrometer, 45 mm Avabench, 256 pixel CMOS detector, USB1.1/RS-232 interface, incl. AvaSoft-Basic, USB interface cable and a PS-12V/1.0A power supply, specify grating, wavelength range and options |
| AvaSpec-256-USB2 |
Fiber Optic Spectrometer, 45 mm Avabench, 256 pixel CMOS detector, USB powered high speed USB2 interface, incl AvaSoft-Basic, USB interface cable, specify grating, wavelength range and options |
| |
|
| Options |
|
| -SPU |
incl. switch for self powered USB1 or external power for RS-232 |
| -SPU2 |
incl. switch for self powered USB2 or external power for RS-232 |
| -SPU2-BT |
Bluetooth interface for USB2 platform only, including antenna and switch |
| SDXXX |
Internal XXX MB SD card for on-board data saving, for USB2 platform in combination with DLL only |
| SLIT-XX |
Slit size, please specify XX = 25, 50, 100, 200, 500 µm |
| OSF-YYY-3 |
Order sorting filter for reduction of 2nd order effects, 3 mm thick, please specify YYY= 385, 475, 515, 550, 600 nm |
|
Products