High speed LED Spectroradiometer

  • Product No:GS-1190
  • Manufacturer:Gamma Scientific

The Gamma Scientific GS-1190 is a high performance, linear CCD array spectrometer, with an 800 kHz readout speed. The spectrometer utilizes a 2048 element detector with 16-bit resolution. Computer interface is USB 2.0. The GS-1190 is ideal for quick and easy LED measurements for users on a budget. Flexible custom configurations and application support are available for OEM applications. The spectrometer accepts an SMA905 fiber-optic input that can be connected to a wide variety of optics including integrating spheres for total flux measurements or CIE127 Conditions A and B for intensity measurements. The system comes with the GS-1190 Windows software package for LEDs with automated report generation.

  • Recommended measurement configurations for LED intensity and total flux

  • Near-real-time measurement

  • High resolution: 0.2 nm/pixel

  • Spectral range: 380-780 nm

  • USB 2.0 interface

  • Windows-based control/analysis software

  • NIST-traceable accuracy

Detector and Wavelength   Specifications


CCD Linear Array

Number of Pixels: 2048

Sensing Pixel size: 14μm x   200μm

Sensitivity: 1800 V/(l*s)   @660nm

Dimensions (mm)

6.3” L x 4.1” W x 2.1” H (160mm L x 103mm W x 54mm H)


0.7 lbs (0.3 kg)

Spectral Range

380-780 nm

Spectral Resolution

5-10nm dependent on slit width, and fiber diameter




Fiber: SMA 905 ,1000μm core Ø fiber Numerical Aperture   = 0.2 Slit: 50 ,100 ,150,350,600μm

USB 2.0 ,16 bit ,800KHz

USB 2.0 ,16 bit   ,800KHz

Power Input

5VDC, 140 mA

Temperature Range

15°C to 40°C


RadOMA-Lite software package

Measurement Specifications

Peak Wavelength Accuracy

+/- 0.5 nm

Dominant Wavelength Accuracy

+/- 0.5 nm

Luminous Flux

Range Depends on Sphere size

Accuracy: +/- 4%

CIE1931 x,y Accuracy

+/- 0.003

Correlated Color Temperature (CCT)

Range: 1000K to 100,000K

Accuracy: +/- 5%

Half-Power Bandwidth (FWHM) Accuracy

+/- 0.5nm

Spectral Purity

+/- 5%

Color Rendering Index (CRI)

+/- 5%