Request InfoKeithley Instruments Inc.The model 7090 optical switching card from Keithley Instruments Inc. is available in 1 x 4 and 1 x 8 switching configurations for the assembly of systems that can accommodate up to four or eight devices under test. It enables DC and RD switching between several instruments, for a single instrument between multiple devices, or a combination of both. The company says it offers effective automation, faster testing, shorter integration time and improved ROI on existing test instruments. 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