Abstract: A radar target simulator outputs multiple video and timing signals for a selected radar type from a single computer bus card slot. Several targets including cluster targets may be simulated at conveniently selectable signal-to-noise ratios. Multiple radar types may be simulated concurrently using additional bus card slots in a single desktop computer.

Abstract: The circuit comprises a differentiator, two nonretriggerable-gated-monoste-multivibrators, a clock decoder, a data flip-flop unit, and a multiphase and frequency logic circuit. The differentiator checks the incoming Manchester encoded signal and divides it into two trigger signals one with data associated with logic "0" transitions within the Manchester signal and the second trigger signal containing data associated with logic "1" transitions within the Manchester data. One trigger signal is fed to one of the nonretriggerable-gated-monostable-multivibrator and the other trigger signal is transmitted to the second similar unit. Within these monostable multivibrator units the signals are gated and delayed by a tapped delay line which outputs a plurality of delayed signals which have waveforms built upon the occurrence of transitions within the Manchester signal associated with the logic "0" and logic "1" occurrences.

Abstract: A circuit for a servo-amplifier saves power when the position servo has reached balance. The servo input is a high frequency differential transformer having its armature positioned by mechanical means driven by a servo motor controlled through amplifier circuitry. The power to the amplifier is turned off in the vicinity of the servo null point.