The design and testing of multi-channel data transmission systems for a transient turbine test rotor are presented. Two multi-channel systems were required for the conditioning and transmission of the electrical signals from thin film gauges and un-packaged embedded pressure transducers which are to be used for the measurement of rotor blade surface heat transfer and pressure respectively. All measurements will be taken from the same rotor at design Mach and Reyoolds numbers. Signal conditioning and amplification will be performed in the rotating frame to solve the problems associated with accurate sigoal transmission. Also, the use of a multi-chanoel array of light emitting diodes for data transmission is described which allows accurate signal reconstruction. Both systems have been initially stress screened and are shown to have an adequate bandwidth for resolving wake blade interactions.

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