VS7000+

Spectral coverage Option

UV-VIS:
(200–860    nm), 250 nm optimized grating, built-in    order-sorting filter
VIS:
(380–750    nm), VIS-blazed    grating, built-in long-pass filter
UV-NIR:
(200–1050 nm), dual-blaze grating, built-in order-sorting filter

For other gratings, please contact us.

Numerical aperture

F/2.8

Stray light rejection
Typical (Maximum)

• 0.04% (0.08%) for UV-VIS configuration with 300 μm tall CCD.
  (measured with broad bandpass 510nm filter, 75μm slit-width)
• >2.4 AU linear range (5% variation) with caffeine 273nm absorption peak in 10mm    cuvette    and D lamp.

CCD Detector & Typical Q.E.

Back-illuminated linear CCD with low etaloning in NIR – 65% Peak QE in the UV

CCD Detector height & Fiber-optic option

300 μm standard CCD height ( 1000 μm CCD height is available as an option)
600 μm diameter, 1.5m long fiber-optic (Fiber is not an option; for the 1 mm tall CCD, prefer an 800-1000 μm diameter fiber)

Thermoelectric stabilization

None.Dark current and CCD-pattern noise    must be subtracted. User must switch off light source or install manual shutter in optical path. QE shifts slightly with temperature.

Spectral resolution
Pixel resolution
Slit (factory configuration)

UV-VIS: 75 μm slit - 2048 pixels - 2.7nm resolution – 0.33nm/pixel (configuration with 300 μm tall CCD)
Available slits: 12-25-37-50-62-75-100-125-150-200μm (For other gratings, please contact us.)

Improved CCD full well
Raw non linearity
Factory corrected linearity

>250Ke^- (sensitivity mode) and >450Ke^- (high FW mode)
<1% (sensitivity mode) < 3% (high FW mode)
< 0.4% (sensitivity mode) < 0.8% (high FW mode)

Readout speed

8.6ms (500kHz mode); 116 spectra/s with    0 exposure time (Multi-Acq mode)
Max: 4.5 ms (Ultra mode); 223 spectra/s with 0 exposure time (Multi-Acq mode)

Typical Dark current

2.8 count/ms at 20 °C room temperature; Typical Offset= 1000 counts

Typical readout noise

35 e^- (Max= 45e^-) in sensitivity mode and 75e^- (Max=90e^-) in High FW mode

A/D converter & speed

16 bit, 500KHz

Typical dynamic range

7,000:1 in sensitivity mode to 6,000:1 in high FW mode

Signal-to-noise ratio (typical)

500:1 (sensitivity mode) to 700:1 (high FW mode). Shot- noise-limited conditions

Gain selection

4 e^-/count and 8 e^-/count

Dimensions (H×  W×D)

2.9”× 4.1”× 4.3”(73.0mm × 103.2mm × 109.4mm)

Weight

1.8 lb (0.82 kg)

* Specifications, Form Factor and Spectrometer Covers are subject to change without notice.