Abstract: An electrically and mechanically modular design of a high impedance, passive tap is disclosed for use in distributed, serial transmission systems to provide a tap connection to the primary transmission line with minimum loading and reflection. The tap is comprised of the cable connectors and a microstrip circuit compatible with an associated transceiver.

Abstract: The disclosure teaches an improved connector containing a fold bushing for connecting an inner braid of a transmission line to its associated shield conductor within the connector and for minimizing the reflection signal induced by each connector affixed to the transmission line.

Abstract: An electrically and mechanically modular design of a high impedance, passive transceiver is disclosed for use in distributed, serial transmission systems to provide half uplex interfacing to multiple users with minimum loading and reflection. The transceiver is selectively operable in either of two modes: a receive mode for receiving low-level serial, bi-phase (3 state) Manchester coded signals and transmitting (2 wire, 2 state) signals at transistor-transistor logic (TTL) levels; and a transmit mode for receiving (2 wire, 2 state) signals at TTL levels and transmitting the low-level, serial bi-phase, (3 state) signals on the bus.

Abstract: A finite drive impedance, unbalanced transmission line system for transmitting only the differentiated transitions of a binary level digital signal is disclosed. The transmission line arrangement includes two identical, balanced-bridge transceivers at opposite ends of a coaxial cable whose alternating current (AC) transmission line characteristics are utilized to maintain waveform timing, i.e., the spacing between the differentiated transitions, independent of transmission line length. Integrated circuit (IC) transistor-transistor-logic (TTL) is utilized for the active elements.