X4-DE Light Analyzer
X4-BTS Sensor
GB-GD-360-V02 Goniometric Drive

The X4 Light Analyzer is designed for all types of light measurements in absolute radiometric and photometric units. To accomplish this the X4-DE base device featuring a diode array spectrometer can be combined with different detector heads and accessories to form the different required measurement geometries. For spatial luminous intensity distribution measurements the X4 light analyzer and its X4-BTS sensor can be combined with the GB-GD-360-V02 goniometer bench. The GB-GD-360-V02 goniometer consists of 2 meter long rail-bench, two axis goniometric drive assembled onto the bench and the BT256-LED carrier mounted on a linear translation stage for adjustable measurement distances between the test source and the measurement device. The goniometer drive offers a universal threaded hole pattern platform for mounting the test device. Four electrical connectors located on the front side of the platform are wired through the center axis to a connector on the back of the rotary table to avoid twisting of the cable. Adjustment of front of the test device to the goniometric reference axis is accomplished by rough and fine z-axis drives. The S-GB-X4 software supplied with the goniometer drive is Windows XP and Windows 7 (32bit and 64bit) compatible. It supports remote control operation of the X4 light analyzer and the goniometer bench via USB interface , the symmetrical or individual set-up of the measurement sequences, measured numerical and graphical data documentation and data transfer into IES and EULUMDAT format. Beside the spatial luminous intensity distribution data the effective luminous flux is calculated. The X4 with its X4-BTS sensor is calibrated for photometric and or radiometric sensitivity of the integral sensor and the absolute spectral sensitivity of the diode array spectrometer within the wavelength range from 400nm to 1050nm. Calibration is performed by Gigahertz-Optik’s calibration laboratory for light measurement quantities against calibration standards traceable to national and international metrology laboratories. Re-calibration is recommended every 12 months.