LSM 350
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Catalog excerpts

LSM 350 - 1

We bring quality to light. LSM 350 4-quadrant Source and Measure Unit for LED Production Tests Product highlights Very short test cycles and parallel electrical measure ments 0 – 350 mA; 0 – 8 V Up to 4 test channels with optional switch matrix Dedicated test channel for μA range Measurement of breakdown voltage up to 40 V The LSM 350 source and measure unit was specifically developed to meet the requirements for production testing of LEDs and LED wafers. High test speeds and tailor-made functions make this unit an attractive solution for supplying current or voltage to LEDs with low to medium power output. Up to four test channels can be provided for multi-chip LEDs (e.g. RGB or RGBW). Combination with high-precision array spectrometers from Instrument Systems creates a test system that meets the highest requirements for optical and electrical testing carried out on LEDs. As a bipolar current and voltage source, the LSM 350 provides all the functions necessary for testing LEDs fast. The automatic polarity test feature can be used for single and multi-chip LEDs. Dedicated test channels permit particularly precise measurements at low forward currents of 1 μA, and measurement of reverse currents in the nA range. The basic module can be expanded by an option to measure breakdown voltages up to 40 V. Top priority was given to short settling times when the unit was being developed. As a result, test cycles are up to 40% below those of most standard current sources. The LED 350 is fully integrated in the LED Tester software from Instrument Systems, allowing test routines to be set up quickly and effortlessly with binning specifications and statistical analyses. light measurement

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LSM 350 - 2

We bring quality to light. Optimized for production testing Laboratory version The functionalities of the LSM 350 were tuned exactly to the requirements of online production testing of LEDs. This allows all the important parameters of LEDs to be determined quickly and reliably in a 24 h/7d application. The LSM 350 is available in a table-top enclosure for easy laboratory measurements under the same conditions as in production settings. This allows all tests that are normally carried out on automatic sorting machines to be carried out manually in the laboratory instead. The modular concept...

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LSM 350 - 3

We bring quality to light. Complete system for production The fact that the LSM 350 can deliver the benefit of very short test cycles is demonstrated by the following example. The standard job used here involves these measurements: An optical test at rated current and 9ms integration time of the spectrometer (this test also includes measurement of forward voltage at rated current), measurement of the reverse current, and electrical measurement at 1 μA in the forward direction. The LSM 350 can be integrated effortlessly into the modular concept of the LED Tester from Instrument Systems. This...

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LSM 350 - 4

We bring quality to light. Technical data and specifications Range Current mode Current mode HVR option (not bipolar) -10 – -1 μA Voltage mode 0.01 – 8 V Reverse current measurement Other Output settling times In current and voltage mode Ordering information Bestell-Nr. 1-channel bipolar current source for testing LEDs, OEM module, 0 to 350 mA, 0 to 8 V; 200 to 240 V mains supply 1-channel bipolar current source for testing LEDs, OEM module, 0 to 350 mA, 0 to 8 V; includes HVR option; 200 to 240 V mains supply, 1-channel bipolar current source for testing LEDs, 0 to 350 mA, 0 to 8 V; 200 to...

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