Spectroscopy

Vernier-Ocean Optics Spectrometer Specifications

Vernier Spectrometer Ocean Optics Red Tide Spectrometer Ocean Optics Red Tide UV-VIS Spectrometer Ocean Optics VIS-NIR Spectrometer Ocean Optics UV-VIS Spectrometer
Ocean Optics Model USB650 and USB-ISS-VIS USB650-UV-VIS CHEMUSB4-VIS-NIR CHEMUSB4-UV-VIS
Physical
Dimensions (mm) 89.1 × 63.3 × 34.4
Weight (g) 190
Detector
Type Linear Silicon CCD Array Toshiba TCD1304AP Linear CCD Array
Pixels 325 enabled pixels 650 enabled pixels 3648 enabled pixels
Pixel Size (µm) 14 x 200 8 x 200
Pixel Well Depth ~62,500 100,000 electrons
Sensitivity (photons/count @ 400 nm) 75 130 photons/count at 400 nm;
60 photons/count at 600 nm
Optical Bench
Design f/4, asymmetrical crossed Czerny-Turner
Focal Length (mm) 42 (input); 68 (output)
Entrance Aperture 25 µm wide slit
Fiber Optic Connector SMA 905 SMA 905 to 0.22 numerical aperature single-strand optical fiber
Grating Grating #2 Grating #1 Grating #2 Grating #1
OFLV Filter OFLV-200-850 OFLV-350-1000 OFLV-200-850
Other Bench Filter Options Longpass OF-1 filters
Collimating and focusing mirrors Standard or SAG-UPG
UV enhanced window Yes, UV4
Spectroscopic
Wavelength Range (nm) 350-1000 200-850 350-1000 200-850
Signal-to-Noise Ratio 250:1 (at full signal) 300:1 (at full signal)
A/D Resolution (bit) 12 16
Dark Noise 3.2 RMS counts 50 RMS counts
Dynamic Range 2 × 108; 1300:1 for a single acquisition
Integration Time 3 ms to 65 s (15 s typical maximum) 3 ms to 65 s 3.8 ms to 10 s
Stray Light <0.05% @ 600 nm; <0.10% @ 435 nm
Corrected Linearity >99.8%
Electronics
Power consumption 90 mA @ 5 VDC 250 mA @ 5 VDC
Data transfer speed Full scans to memory every 13 ms with USB 2.0 port, 18 ms with USB 1.1 port Full scans to memory every 5 ms with USB 2.0 port, 18 ms with USB 1.1 port
Inputs/Outputs Yes, 8 onboard digital user-programmable GPIOs
Analog Channels No
Auto Nulling Yes
Breakout Box Compatible Yes, Requires Adapter Yes, HR4-BREAKOUT
Trigger Modes 5 4 5
Strobe Functions Yes
Connector 10-pin connector 22-pin connector
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