| |
USB2000+UV-VIS |
|
USB2000+VIS-NIR |
|
Computer Interface: |
Universal Serial Bus
(RS-232 available on side connector) |
|
Universal Serial Bus
(RS-232 available on side connector) |
|
Spectrometer
channels: |
Master spectrometer
channel only |
|
Master spectrometer
channel only |
|
Detector: |
2048-element linear
silicon CCD array |
|
2048-element linear
silicon CCD array |
|
Integration time: |
1 ms - 65 seconds |
|
1 ms - 65 seconds |
|
Useable range: |
200-850 nm
(grating-dependent) |
|
350-1000 nm
(grating-dependent) |
|
Dynamic range: |
2 x 108 |
|
2 x 108 |
|
Sensitivity: |
75
photons/count; also, 2.9 x 10-17 joule/count
2.9 x 10-17
watts/count (for 1-second integration)
|
|
75
photons/count; also,
2.9 x 10-17 joule/count
2.9 x 10-17
watts/count (for 1-second integration) |
|
Signal-to-noise
ratio: |
250:1 (at full signal) |
|
250:1 (at full signal) |
|
Dark noise: |
50(RMS) |
|
50 (RMS) |
|
Grating: |
600 lines/mm, set to
200-850 nm (blazed at 300 nm) |
|
600
lines/mm, set to 350-1000 nm (blazed at 500 nm) |
|
Slit: |
25
mm
width (height is 1000
mm) |
|
25
mm
width (height is 1000 mm) |
|
Focal length: |
42 mm (input); 68 mm
(output) |
|
42 mm
(input); 68 mm (output) |
|
Order-sorting: |
Single-piece, multi-bandpass
detector coating to eliminate second-order effects from 200-850 nm |
|
Single-piece, multi-bandpass
detector coating to eliminate second-order effects from 350-1000 nm |
|
Resolution: |
1.5 nm (FWHM) |
|
1.5 nm (FWHM) |
|
Stray light: |
< 0.05% at 600 nm
< 0.10% at 435 nm
< 0.10% at 250 nm |
|
< 0.05% at
600 nm
< 0.10% at 435 nm |
|
Fiber optic connector: |
SMA 905
to single-strand optical fiber (0.22 NA) |
|
SMA 905 to
single-strand optical fiber (0.22 NA) |
