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New conditioner: PQBA-II ! Programmable Quad Bridge Amplifier ! Basic functionality of PQBA ! Added functionality: ! shunt calibration ! higher input range for capacitive accelerometers ! dynamic strain conditioning using balanced constant current excitation 24 Aerospace Testing Expo 2005
Dynamic strain measurements ! Standard ¼ bridge: ! Sensitivity depends on cable length ! No common mode rejection ! Unbalanced constant current: ! Sensitivity independent of cable length ! No common mode rejection ! Balanced constant current: ! Sensitivity independent of cable length ! High common mode rejection 25 Aerospace Testing Expo 2005
Page 1 and 2: AERO-ENGINE DYNAMIC TESTING tacklin
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Page 39 and 40: Outline ! Introduction to Jet Engin
Page 41: Thank you for your attention LMS Us

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