| |
USB2000+
UV-VIS |
USB2000+
VIS-NIR |
USB2000+
UV-VIS-ES |
USB2000+
VIS-NIR-ES |
|
Computer Interface: |
-- Universal Serial Bus
(RS-232 available on side connector) -- |
|
Spectrometer
channels: |
-- Master spectrometer
channel only -- |
|
Detector: |
-- 2048-element linear
silicon CCD array -- |
|
Integration time: |
-- 1 ms - 65 seconds -- |
|
Useable range: |
200-850 nm
(grating-dependent) |
350-1000 nm
(grating-dependent) |
200-850 nm
(grating-dependent) |
350-1000 nm
(grating-dependent) |
Dynamic range:
|
-- 8.5 x 107
(system); 1300:1 (single acquisition) -- |
|
Sensitivity: |
-- 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)
-- |
|
Dark noise: |
-- 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) |
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
µm
width (height is 1000
mm)
-- |
|
Detector collection
lens: |
No |
No |
Yes |
Yes |
|
Focal length: |
-- 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 |
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) -- |
|
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 |
< 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) -- |
