specbos 1201 is one of the smallest VIS spectroradiometers available worldwide (download datasheet). Its easy-to-use software has the full complement of radiometric and colorimetric functions requisite for research， diagnostic， and quality control applications. Several special calculations and features are implemented in the software JETI LiVal e.g. the calculation of RGB， PAR and circadian values， pass/ fail functions and a LED Ranker (Ranking of LED's and other light sources; see applications).

specbos 1201 can be used for measurements in Irradiance mode as well as in Radiance mode with measuring diameters beginning from 4 mm. The special model specbos 1201 focus can measure diameters of 3 mm， 1 mm and 0.5 mm in radiance mode. Furthermore the model specbos 1201 flash is available. It measures pulsed sources， both single and continously flashed， in Irradiance mode.

Specifications

Optical Parameters
Spectral range	380 nm .. 780 nm
Wavelength resolution (FWHM)	5 nm
Calculated wavelength step	1 nm
Digital electronic resolution	16 Bit ADC (15 Bit used)
Viewing angle (luminance mode)	1.8°
Measuring distance/ diameter	20 cm - Ø 6 mm; 100 cm - Ø 31 mm (luminance mode)
Measuring values	Spectral radiance; Total luminance/ total radiance; Total illuminance/ total irradiance; Chromaticity coordinates x，y; u'，v'; Correlated Color Temperature， color purity; Color Rendering Index; Circadian metrics， Photosynthetically Active Radiation
Measuring range and accuracies
Measuring range luminance	2 ... 7×10⁴ cd/m²(higher values with optional filter)
Measuring range illuminance	20 ... 5×10⁵ lx
Luminance accuracy	± 2 % (@ 100 cd/m² and illuminant A)
Luminance reproducibility	± 1 %
Chromaticity accuracy	± 0.002 x， y (@ illuminant A)
Color reproducibility	± 0.0005 x， y
CCT reproducibility	± 20 K (@ illuminant A)
Wavelength accuracy	± 0.5 nm
Technical Parameters
Dispersive element	Imaging grating (flat field)
Light receiving element	Photodiode array 1024 pixel (binned)
Power supply	USB powered
PC interface	USB 2.0 fullspeed
Dimensions (drawing)	140 mm x 58 mm x 34 mm
Weight	350 g
Operating conditions	Temperature 10 ... 40 °C Humidity 85 % relativ humidity at 35 °C
Miscellaneous
All inclusive accessories packet	Cosine corrector head-piece Tripod Transport box PC software JETI LiVal JETI SDK LabVIEW VI's (Virtual Instruments) Short instructions Operating instructions (digital) and firmware commands (digital) USB cable Trigger connector
Calibration	NIST traceable
Recommended recalibration interval	1 year

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