Abstract: A method and apparatus for testing circuit boards using two or a small number of probes for making resistive and radio frequency impedance measurements e.g. capacitive measurements. The combination of resistive and impedance measurements substantially reduces the number of tests required to verify the integrity of a circuit board. The impedance or capacitive "norm" values used in testing the circuit boards can be obtained by operating the system in a learning mode. Analysis of the data provides not only fault detection but also can indicate approximate fault location.

Abstract: A process for extending and fixing conductors to circuit board base surfaces between pre-established spaced points in straight paths and pre-established spaced points in inflected paths, the steps comprising, fixing the end of the conductor to a pad at the first of a pair of pre-selected points and, while feeding the conductor with a guide, moving the board and the guide relative to each other along a straight path to a pad at the second of the pair of pre-established points or to a pad at an inflection point, if the conductor is to be inflected, and then to said second pad. Severing said conductor at said second pad and affixing the conductor end to said second pad. Repeating the foregoing steps until the conductor has been affixed to the pre-established pairs of pads and to the pads at the inflection points.

Abstract: A multi-wire electrical interconnecting circuit member having a multi-wire matrix of insulated wires mechanically terminated on the multi-wire electrical interconnecting member. Wire retaining members positioned on the multi-wire electrical interconnecting member terminate the wires and establish a gas-tight electrical connection therewith. Each of the wire retaining members includes means for engaging a wire with sufficient force to penetrate any insulation thereon and establish and maintain a gas-tight electrical connection with the conductive core of the wire.

Abstract: Apparatus for advancing magnetic tape with respect to a recording head through small, discrete, and uniform displacement increments. A direct current drive motor has an armature shaft that drives a displaceable member. Controls develop signals that energize and deenergize the motor. Included in these controls are a speed responsive tachometer and an acceleration control utilizing a saturable amplifier.