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Title: A New Solid State Pulse Duration Telemetering Receiver
Author: R. W. Lowell
Source: 1979 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1979
Abstract: Time proven pulse duration -telemetering techniques are now updated with the introduction of the solid state Metameter receiver by Bristol. Traditionally, a pulse duration receiver has been an electro-mechanical device made up with gears, differentials, brake disks, a solenoid, and driven by a synchronous motor - the receiver ultimately positioning an output shaft according to the pulse duration input signal. The new solid state unit accomplishes exactly the same function (output shaft positioning) by use of electronics in place of electro-mechanical techniques and eliminates the clickety clack - the noise associated with mechanical receivers. The input to the receiver, in the form of a timed length of contact closure from the transmitter, is a 45 ma dc current flowing through the coil of the Input relay (290 ohms). The measurement signal is therefore completely isolated from the electronics in the receiver Itself and the input is not polarity sensitive.

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