Gigahertz-Optik GmbH
An der Kälberweide 12
82299 Türkenfeld / Germany
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LED Tester for Luminous Intensity Distribution
BTS256-LED & GB-GD-360-V01
Product DescriptionThe BTS256-LED tester is an accurate handy light and color measurement device for LEDs and other light sources. Beside it’s main application range, the measurement of single LEDs assembled on printed circuit boards or other carriers, a diffuser window option is available for illuminance or luminous intensity measurements. With the diffuser installed the BTS256-LED can be combined with the GB-GD-360-V01 goniometer bench to measure the spatial luminous intensity distribution of LEDs and directional LED light sources.
The GB-GD-360-V01 contains a two meter long rail-bench, two axis goniometer drive mounted onto the bench and the BT256-LED carrier assembled on a linear translation stage for adjustable measurement distances between the test source and the measurement device. The goniometer drive features a universal assembly platform with threaded hole pattern for mounting the test sample. The four electrical connectors located on the front side of the assembly plate are wired through the axis to a connector on the back of the rotary table to avoid cable twisting. Rough and fine z-axis drives are used for the adjustment of the front of the test sample to the goniometric reference axis.
S-GB-BTS256-LED software supplied with the goniometer drive is Windows XP and Windows 7 (32bit and 64bit) compatible. It supports remote control operation (via USB interface) of the BTS256-LED tester and the goniometer bench, the symmetrical or individual set-up of the measurement sequences, the numerical and graphical data documentation and data transfer into IES and EULUMDAT format. Also effective luminous flux is calculated from the accumulated luminous intensity distribution data as well.
In short BTS256-LED tester with the BTS256-LED-DA diffuser window and the GB-GD-350-V01 options is a all-purpose light meter for total flux measurement of single LEDs, for illuminance measurements of LED sources and the spatial luminance intensity distribution measurement of compact luminaries with directional light output.
Specifications (Data)
| GB-GD-360-V01 | Goniometric Bench |
| Goniometric Drive | two axis rotary table for remote control of the Phi and Theta angle orientation of the source under test to the light meter. Stepping motor drive with belt drive. RS232 interface. 24VDC operation voltage |
| Setting Range | phi axis (horizontal) +/-90°. Resolution 0.1°. Reproducibility 0.2° theta axis (axial) +/-180°. Resolution 0.2°. Reproducibility 0.4° z axis (position of test sample to the goniometric reference axis) 100mm rough. Fine adjustment 5mm with <0,1mm resolution maximum load 1kg |
| Sample Fixing | rotary table with M4 threaded holes pattern and central M6 hole |
| Electrical Contact |
sample by four compact size sockets at the front side of the rotary table. Supply line connecting with Phoenix socket at the back side of the theta axis drive two diameter though-holes from the back side of the theta axis to the front side of the rotary table for additional leads, coaxial cables, vacuum tubes etc. |
| BTS256-LED | LED tester with BTS256-LED-DA diffuser window |
| Sensor Design | BiTech Sensor with fine photometric matching photodiode and 256 pixel CMOS photodiode array. Integrated shutter for remote controlled offset compensation. |
| Integral Sensor |
integration time setting from 100µs to 6s. Seven (7) measurement ranges with correction range transcendent offset correction. 12Bit SAE ADC spectral response with fine CIE photometric matching. On-line correction by spectral source data luminous intensity resolution xx cd. Maximum measureable luminous intensity xx cd |
| Spectral Sensor |
spectral range 380 to 750nm. Pixel resolution 1.5nm. Optical resolution 5nm integration time setting from 5.2ms to 30s. remote operated shutter for dark signal measurements with identical integrating time than that of the measurement. Delay 100ms open state, 100ms close state luminous intensity measurement range (white light):
peak wavelength: +/- 1nm dominant wavelength: +/- 1nm Δx, Δy reproducibility: Standard Illuminant A +/-0.0001, LEDs +/- 0.0002 at 2000cts peak power Δx, Δy uncertainty: Standard Illuminant A +/-0.005, LED +/- 0.005 average, max +/-0.01 CCT Measurement range: 1700 to 17000 K ΔCCT: Standard Illuminant A 50K; LED up to +/-6% depending of LED spectrum color Rendering Index Ra and R1 to R14 |
| Cosine Diffuser |
20mm diameter diffuse quartz glass in adapter with bayonet style mount specified cosine corrected field of few 60° total cosine error f2 = 2.5 % within the specified F.O.V. |
Microprocessor | 16Bit, 25ns instruction cycle time |
| Power | 5VDC to 7VDC, 250mA peak during aux lamp capacitance loading |
| Remote interface | RS232: 115200Baud, 8D, IS, N; 9PIN SUBD connector with PIN for DC voltage USB to RS232 converter with DC voltage transfer function from PC USB |
| Software | device set-up for auto or manual ranging with set-able integrating time, on-line or single offset compensation, frequency synchronization measurement modes: CW, manual and automatic data logger measurement data: Illuminance, Color Temperature, xy, u’v’ Color coordinates, Dominant wavelength, CRI color rendering Index (Ra, R1 - R14), Peak wavelength, Peak Intensity, luminous intensity at fix angle, luminous intensity distribution with set-able sequence graphical displays: Emission spectrum, CIE 1931 (x,y) and CIE 1976 (u’, v’) chromaticity diagram, luminous intensity distribution diagram, effective luminous flux measurement data storage in ASCI format, IES and EULUMDAT data format |
| Temperature | operating: 10 to 30°C Storage: -10 to 50°C |
| Dimensions/Weight | 160mm (6.3 in) L x 85mm (3.3) W x 60mm (2.4 in) H. Weight: 500g (1.1 lb) |
| Carrying case | hard case, 333 x 280 x 70mm, 650g |
Ordering Information
| Model | Item No.: | Description |
| BTS256-LED | 102494 | Measurement device with BTS256-LED-CA10 cone adapter, RS232/USB adapter, hard case, operation manual, software CD, calibration certificate with data user CD |
| BTS256-LED-DA | 102622 | Diffuser window adapter with bayonet type mount. Calibration in illuminance (lx) |
| GB-GD-360-V01 | 102654-1 | Photogoniometer for LEDs and LED lumiares for operation with BTS256-LED Tester |
| Re-Calibration: | ||
| K-BTS256-LED-I | 300264 | Re-calibration of BTS256-LED tester with 10mm cone adapter |
| K-BTS256-LED-DA-I | 301355 | Re-calibration of BTS256-LED tester with BTS256-LED-DA adapter in illuminance [lx] und spectral responsivity |
| Accessory: | ||
| BTS256-LED-CA5 | 102620-1 | Cone adapter with 5mm diameter |
| BTS256-LED-CA6 | 102620-1 | Cone adapter with 6mm diameter |
| BTS256-LED-CA7 | 102620-1 | Cone adapter with 7mm diameter |
| BTS256-LED-CA8 | 102620-4 | Cone adapter with 8mm diameter |
| BTS256-LED-CA9 | 102620-5 | Cone adapter with 9mm diameter |
| BTS256-LED-CA10 | 102620 | Cone adapter with 10mm diameter |
| BTS256-LED-CA11 | 102620-6 | Cone adapter with 11mm diameter |
| BTS256-LED-CA12 | 102620-7 | Cone adapter with 12mm diameter |
| BTS256-LED-CA13 | 102620-8 | Cone adapter with 13mm diameter |
| BTS256-LED-CA14 | 102620-9 | Cone adapter with 14mm diameter |
| ISD-21-V01 | 102733-01 | Integrating sphere for luminous flux of LEDs under test operated outside of the sphere. 210 mm diameter. 63.5 mm measurement port diameter. Auxiliary lamp. Optional calibration K-BTS256LED-U-I. Replaces model UMBB-210-BTS256LED |
| ISD-50-V01 | 102732-01 | Integrating sphere for luminous flux of LEDs under test operated outside of the sphere. 500 mm diameter. 127 mm measurement port diameter. Auxiliary lamp. Optional calibration K-BTS256LED-U-I. Replaces model UMBB-500-BTS256LED |
| ISD-50HF-V01 | 102717-1 | Integrating sphere for luminous flux of LEDs under test operated inside of the sphere. 500 mm diameter. UMSH-AP-500 sample holder. Auxiliary lamp. Optional calibration K-BTS256LED-U-I. |
| ISD-50HF-V02 | 102717-2 | Integrating sphere for luminous flux of LEDs under test operated inside of the sphere or outside of the sphere trough the 127mm diameter measurement port. 500 mm diameter. UMSH-AP-500 sample holder. Auxiliary lamp. Optional calibration K-BTS256LED-U-I. |
| ISD-100HF-V01 | 102693-1 | Integrating sphere for luminous flux of LEDs under test operated inside of the sphere. 1000 mm diameter. UMSH-AP-1000 sample holder. Auxiliary lamp. Optional calibration K-BTS256LED-U-I. |
| ISD-100HF-V02 | 102693-2 | Integrating sphere for luminous flux of LEDs under test operated inside of the sphere or outside of the sphere trough the 254mm diameter measurement port. 1000 mm diameter. UMSH-AP-1000 sample holder. Auxiliary lamp. Optional calibration K-BTS256LED-U-I. |
| K-BTS256LED-U-I | 300265 | Calibration or re-calibration of luminous flux [lm] and spectral flux of the BTS256-LED with ISD-type integrating sphere |
| BTS256-LED-ALP | 102621 | DC power supply to operate the auxiliary lamps of ISD-type integrating spheres in constant current mode. BTS256-LED-C-ALP interface adapter for remote On/Off control |
Related Products
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Productvideos
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Video 1: GB-AD-360-V01 in use with LED spot source