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2520 Datasheet(PDF) 2 Page - TEKTRONIX, INC. |
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2520 Datasheet(HTML) 2 Page - TEKTRONIX, INC. |
2 / 8 page Datasheet TEK.COM 2 LIV Test Capability The Model 2520 can perform pulsed LIV testing up to 5A and continuous LIV testing up to 1A. Its pulsed testing capability makes it suitable for testing a broad range of laser diodes, including the pump laser designs for Raman amplifiers. The instrument’s ability to perform both DC and pulsed LIV sweeps on the same device simplifies analyzing the impact of thermal transients on the LIV characteristics of the laser diode. Maximize Throughput and Eliminate Production Bottlenecks By working in cooperation with leading laser diode manufacturers, Keithley designed the Model 2520 specifically to enhance chip- and bar-level test stand yield and throughput. Its integrated design, ease of use, high speed, and high accuracy provides a complete solution to help laser diode manufacturers meet their production schedules. Producers of laser diodes face constant pressure to increase test throughput and optimize return on investment for their capital equipment used in production testing. Until recently, these producers were forced to use relatively slow and cumbersome test stands for testing laser diodes at the chip and bar level, which often led to production bottlenecks. Higher Resolution for Higher Yields To achieve the required signal-to-noise ratio, traditional chip- and bar-level LIV testing solutions have required the use of boxcar averagers or test system control software modifications to allow averaging several pulsed measurements. The resolution of these measurements is critical for the “kink” test and threshold current calculations. With earlier test system designs, particularly when performing the kink test, low resolution and poor linearity of the analog digitizer made it extremely difficult to discriminate between noise in the measurement and an actual device kink. The Model 2520’s unique DSP-based measurement approach automatically identifies the settled region of the pulsed waveforms measured. This means the Model 2520 stores only that portion of the pulse that is “flat” and contains meaningful data. All measurements made in the flat portion of the pulse are averaged to improve the Signal- to-Noise ratio still further. If greater resolution is required, the Model 2520 can be programmed to perform several pulse and measure cycles at the same pulse amplitude. By making it possible to conduct more thorough testing at the bar or chip level, the Model 2520 also eliminates the wasted time and costs associated with assembling then scrapping modules with non-compliant diodes. Simple, One-Box Test Solution The Model 2520 offers three channels of source and measurement circuitry. All three channels are controlled by a single digital signal processor (DSP), which ensures tight synchronization of the sourcing and measuring functions. The laser diode drive channel provides a current source coupled with voltage measurement capability. Each of the two photodetector channels supplies an adjustable voltage bias and voltage compliance, in addition to current measurement capability. These three channels provide all the source and measure capabilities needed for full LIV characterization of laser diodes prior to integration into temperature controlled modules. By eliminating the need for GPIB commands to perform test sweeps with multiple separate instruments, the Model 2520’s integrated sourcing and measurement allows a significant improvement in throughput. Ordering Information 2520 Pulsed Laser Diode Test System with Remote Test Head Accessories Supplied User’s Manual, Quick Reference Guide, Triax Cables (2), BNC 10W Coaxial Cables (4) Accessories Available 7007-1 Double Shielded GPIB Cable, 1m (3.3 ft.) 7007-2 Double Shielded GPIB Cable, 2m (6.6 ft.) KPCI-488LPA IEEE-488 Interface/ Controller for the PCI Bus KUSB-488B IEEE-488 USB-to-GPIB Adapter for USB Port Services Available 2520-3Y-EW 1-year factory warranty extended to 3 years from date of shipment C/2520-3Y-DATA 3 (Z540-1 compliant) calibrations within 3 years of purchase* *Not available in all countries |
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