VS7000

Spectral coverage Option

UV-VIS:
200-860 nm with 250 nm blazed grating and built-in order sorting filter
VIS:
380-750 nm with VIS optimized grating and built-in longpass filter
UV-NIR:
200-1050 nm with dual blaze grating and built-in order sorting filter

Numerical aperture

F/3

Stray light rejection
Typical (Maximum)

0.04% (0.08%) for UV-VIS configuration.
Stray light note: measured with broad bandpass 510 nm filter, 75 μm slit width

CCD Detector & Typical Q.E.

Back-illuminated linear CCD with ultra-low etaloning in NIR region
QE: 65% at 250 nm - >90% at 650 nm - 70% at 850 nm

Detector height & Fiber diameter

~300 μm CCD height and 300 μm diameter fiber (optional; 1.5 m long)

Thermoelectric stabilization

None. Dark current (and CCD pattern noise) must be subtracted. User needs to turn off the light
source or install a manual shutter in the light path.
As with all CCD and PDA detectors, the QE slightly shifts with temperature.

Spectral resolution
Pixel resolution
Slit (factory configuration)

UV-VIS: 75 μm slit with 1024 pixels – 2.6 nm resolution –

0.65 nm per pixel
(Computed by measuring and averaging resolution at 253/365/435/546/696/811)
For sub-nanometer resolution, 12 μm and 37 μm slits are available.
For high volume OEM applications, other gratings and slits are available.

Improved CCD full well
Raw non linearity
Factory corrected linearity

168 Ke- (measured on 1024 pixel CCD version with linear correction)
<2.5%
<0.6%
Non linearity note: difference between maximum and minimum deviation from a straight line divided by 65000

Readout speed

4.45 ms (1 MHz mode) 225 spectra/s with 0 exposure time (Multi-Acq mode)

Maximum readout speed

2.35 ms (Ultra mode) 425 spectra/s with 0 exposure time (Multi-Acq mode)

Integration time

1 μs (+ readout time) to 5-10 s (see readout speed limit above)
For a few seconds exposure time, consider that there is SQRT (Dark Current) of added dark noise.

Typical Dark current

4 count/ms at 1 MHz mode at 20 °C room temperature (Max = 9 counts/ms)
Typical Offset: 1000 counts

Typical readout noise

30 e- at 1 MHz (Max = 35 e-)

 A/D converter & speed

16 bit, 1 MHz

Typical dynamic range

5,600:1 at 1 MHz (higher if CCD was running at lower speed)

Signal-to-noise ratio (typical)

405:1 (Square root of full well when limited by shot noise)

Gain

2.5 e-/count

Compliances

CE and RoHS compliant

Size

L 4.9 x W 3.9 x H 2.9 in (124.5 x 99 x 74 mm)
(Contact us for OEM volume special requirements, such as other form factors)

Weight

2 lb