Abstract: A fluid level gauging probe having a flexible transmitter wherein the flexible transmitter includes a first flexible electrically conductive conduit flexibly and substantially coaxially supported within a second flexible conduit. The second flexible conduit includes an electrically conductive probe conduit portion forming an electrical capacitance member with the first conduit. Non conductive spacers are provided for flexibly and substantially coaxially supporting the first flexible conduit within the second flexible conduit. Non conducting locating pins are radically disposed through longitudinal slots in the first and second flexible conduits for the attaching the flexible transmitter to a probe housing and for maintaining the first and second flexible conduits in a substantially fixed longitudinal relationship when the flexible transmitter is flexed.

Abstract: A video synthesizer is adapted for connection to the input circuitry of an oscilloscope, and includes sampling and multiplexing circuitry for presentation of a multiplicity of input signals to a single channel of the oscilloscope. The signals are sampled sequentially, and the samples of respective ones of the signals are multiplexed with corresponding reference voltage levels of a voltage divider so as to vertically displace the signals on the face of the oscilloscope. For periodic input signals, the sequential sampling is repeated at a rate which is not harmonically related to the periodicity of the input signals to fully regenerate the signal waveforms on the oscilloscope. A memory is provided for storing intervals of the input signals in the case of nonperiodic signals, the stored signals then being outputted to the sampling and multiplexing circuitry.