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Version 01.2009-01
Operation Manual
BTS256-LED
Measurement Instrument for
Luminous Flux Φ, Spectral Distribution W/nm
and Color Data of LEDs
Gigahertz-Optik GmbH ● Postfach 1445 ● 82170 Puchheim GERMANY ●Tel: + 49 / 89 / 89 01 59 - 0 ● Fax: - 50 ● E-mail: contact@gigahertz-optik.com
Gigahertz-Optik Inc. ● 5 Perry Way ● Newburyport MA 01950 – 4009 USA ● Tel: +978.462.1818 ● Fax: +978.462.3677 ● E-mail: b.angelo@gigahertz-optik.com
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Summary of Contents for Gigahertz-Optik BTS256-LED
- Page 1 Color Data of LEDs Gigahertz-Optik GmbH ● Postfach 1445 ● 82170 Puchheim GERMANY ●Tel: + 49 / 89 / 89 01 59 - 0 ● Fax: - 50 ● E-mail: contact@gigahertz-optik.com Gigahertz-Optik Inc. ● 5 Perry Way ● Newburyport MA 01950 – 4009 USA ● Tel: +978.462.1818 ● Fax: +978.462.3677 ● E-mail: b.angelo@gigahertz-optik.com...
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Page 2: Table Of Contents
About LED Measurements Page 9 - 10 BTS256-LED Tester Description Page 11 BTS256-LED-150, -300 and –500 Tester for Large Size LEDs Page 12 - 20 G.O.O.S. Software for BTS256-LED Remote Control Measurement Device Set-up (Page 12-13) CW Measurement (Page 14-16) - Page 3 In no event shall Gigahertz-Optik or its suppliers be liable for any loss of use, interruption of business, lost profits, lost data, or indirect, special, incidental or consequential damages of any kind regardless of the form of action, whether in contract, tort (including negligence), strict liability, or otherwise, even if Gigahertz-Optik or its suppliers have been advised of the possibility of such damages.
- Page 4 Obey national environmental laws in the disposal of the battery / device. Warranty Gigahertz-Optik warrants that the product will be free from defects in materials and workmanship for a period of one (1) year from the date of purchase. If any such product proves defective during this warranty period, Gigahertz-Optik will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product.
- Page 5 Version 01.2009-01 Hazard Information: Useage Hazard: The BTS256-LED is a light measurement instrument de- signed for mobile and laboratory use with capability in many different kinds of end-user applications. During the meas- urement the user needs to align the device and read-out measurement information on a PC display requiring the user’s full attention.
- Page 6 Guidelines / Manual Version 01.2009-01 About LED Measurement The BTS256-LED tester is a light measurement device es- pecially designed to analyze the light output of printed cir- cuit board (PCB) mounted and operated Light Emitting Di- odes (LED). Basics of LED Measurements: LEDs are semiconductor light sources with a high efficiency electrical power to light power conversion.
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Page 7: Bts256-Led Tester
Common Incident Light teristics. An alternative method is to mate a photodiode with Polychromatic or Monochromatic a diode array sensor, e.g. Gigahertz-Optik’s BiTech Sen- sors BTS (picture 7.3). It’s photodiode with photometric sensitivity provides a precise linear ratio between light input... - Page 8 LED. The synchronization to the Time Average Intensity light output of the LED can be done with photodiodes be- cause of their fast response time. Picture 8.1: Pulse Width Modulated Signal BTS256-LED Tester / Page 8...
- Page 9 LED Drive Design (picture 9.1) and operating description: The BTS256-LED device is designed with a compact size integrating sphere. The integrating sphere coating is Giga- hertz-Optik’s robust ODM98 type OP.DI.MA. with a nearly Picture 9.1: BTS256-LED Base Design perfect diffuse reflection characteristic.
- Page 10 Both devices should only be used with the BTS256- LED and not on any other conventional interface device. To operate the BTS256-LED it needs to be connected to a laptop or PC with USB interface by using the USB-RS232 adapter (picture 10.2) supplied.
- Page 11 BTS256-LED-150, -300 and –500 for Large Size LEDs Large size LEDs or LED arrays require larger size integrat- ing spheres than the one built into the BTS256-LED tester. For these applications the BTS256-LED tester can be or- dered with larger diameter integrating spheres from 150mm (6 in) with port diameter ≥...
- Page 12 The main concept is hardware and functional DLLs with a graphical user interface (GUI). The G.O.O.S. version for the remote operation of the BTS256-LED supports the set-up of the LED tester, measurement routine, data display and pres- entation as well as documentation. The following pages describe the available tools and their use. The installation of the G.O.O.S.
- Page 13 The dark signal measurement is done ac- cording to the integration time set. If the integration time is changed the dark signal must measured again to reduce measurement uncertainty! 3/4. confirmation or canceling of set-up BTS256-LED Tester / Page 13...
- Page 14 1nm spectral bandwidth set-up for the diode array: 1. selects numerical display 2. selects graphical display 3. stops the measurement 4. reset button 5. start data storage 6. clear displays 7. starts protocol printout BTS256-LED Tester / Page 14...
- Page 15 Software for Remote Control Measurements and Documentation ( Continued ) 2D graphic of spectral flux distribution with activated cursor for wavelength intensity indication CIE chromaticity diagram with xy coor- dinates CIE chromaticity diagram with u’v’ coor- dinates BTS256-LED Tester / Page 15...
- Page 16 PC storage routines. .int includes all integral measurement data .sp3 includes scaled wavelength and spec- tral flux data Instructions for importing the ASCII data into Excel are provided at the end of this software description section. BTS256-LED Tester / Page 16...
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Page 17: Data Logger Measurement
Data logger measurement is initiated with the start button. Upon completion of the measurement sequence the data can be printed and/ or stored in ASCII file. Print-out preview BTS256-LED Tester / Page 17... -
Page 18: Substitution Correction
After the reference measurement the operator is asked (3) to set the BTS256-LED tester on the test sample (DUT). The DUT LED must be switched off! The evaluated substitution correction factor can be stored for future use (4 and 5). - Page 19 7. The evaluation steps are displayed 8. Application of the substitution error correction must be activated 9. Stored substitution correction factors can be loaded for use BTS256-LED Tester / Page 19...
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Page 20: Data Import Into Excel
BTS256-LED data shown: value0 unit peak lambda peakPower: u’ v’ Ra and R1 to R14 The diode array data (pixels and counts) are also stored. In 081207 BTS256-LED test.sp3 the wavelength dependent measurement values are stored. BTS256-LED Tester / Page 20... - Page 21 • BTS256-LED-150 • BTS256-LED-300 • BTS256-LED-500 is identical to the model BTS256-LED except for the extra LPS-100 lamp power supply set-up function used to power the auxiliary lamp for large size integrating spheres. The Phi button (1) opens the configura- tion window.
- Page 22 NOTE: If the substitution measurement is done without influence of the auxil- iary flux the substitution factor must be 1.000 as shown in our example ! The substitution factor can be stored (9) for future use (10). BTS256-LED Tester / Page 22...
- Page 23 Lamp will power off after a few seconds under the power supply off ramp func- tion. Do not switch the lamp off without using the ramp function to avoid micro cracks in the lamp filament. BTS256-LED Tester / Page 23...
- Page 24 Operating: 10 to 30°C Storage: -10 to 50°C Dimensions and Weight 160mm (6.3 in) L x 85mm (3.3) W x 60mm (2.4 in) H. Weight: 500g (1.1 lb) BTS256-LED sensitivity with add-on integrating spheres UMBB-150 Integral sensor: 2.5mlm to 25000lm...
- Page 25 The following manufacturer is responsible for this declaration: Name: GIGAHERTZ-OPTIK GmbH Address: Fischerstraße 4 82178 Puchheim Germany Person responsible for making this declaration: Name: Anton Gugg-Helminger, Dipl.-Ing.(FH) Position: Chairman Puchheim 08.12.2008 --------------------------- ---------------------- (Place) (Date) BTS256-LED Tester / Page 25...
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