Abstract: Disclosed is a system for measuring multi-port amplifier errors (“SME”) of a multi-port power amplifier (“MPA”), where the MPA has a plurality of input ports and a plurality of output ports. The SME may include at least one input coupler, an output array of couplers, an input switch network, an output switch network, and a combiner.

Abstract: Disclosed is a multi-port power amplifier (“MPA”) having an input hybrid matrix (“IHM”), an output hybrid matrix (“OHM”), and a plurality of high-power amplifier (“HPA”) chains. The MPA may include a plurality of adjustable delay modules (“ADMs”) in signal communication with the IHM and the plurality of HPA chains. Each adjustable delay module (“ADM”) of the plurality of ADMs may be in signal communication with the IHM and a corresponding HPA chain of the plurality of HPA chains.

Abstract: A support substrate having an array of magnetically responsive sensors is mounted within the housing of a brushless DC motor in a plane perpendicular to the axis of the motor shaft having commutating magnets thereon. A ferromagnetic flux concentrating member in the form of a generally planar disc having an annular rim with radially inwardly directed spokes is mounted to the support substrate. Each spoke has a radial gap therein. A magnetically responsive sensor is received within each radial gap. The gap may divide the spoke into two discrete gap segments, or may alternatively form an enclosed recess with generally radially extending sidebars along each lateral edge of the spoke.

Abstract: An energy monitoring arrangement that is operatively associated with a centrifuge instrument monitors the magnitude of applied accelerating energy that is used to accelerate a rotor and to interrupt the continued application of accelerating energy if the magnitude of the applied accelerating energy exceeds a predetermined reference energy value. Preferably, the net applied accelerated energy to the rotor is monitored and used in the comparison with the energy reference. The invention may also be used in a predictive manner to provide, early in the centrifugation run, an indication of the energy of a rotor at an operator-ordered set velocity.

Abstract: The present invention is directed to a rotor identification system operable to identify each of a plurality of 2.sup.N rotors. Each rotor has at least two synchronizing detectable elements thereon and up to N additional identifying detectable elements. The identification system comprises a first and a second detector, each detector being operative to generate a synchronizing signal upon the passage of a synchronizing detectable element in proximity thereto; and means responsive to the substantially simultaneous generation of a synchronizing signal from each of the first and second detectors for generating an identification enabling signal. Rotor identification signal generating means responsive to the identification enabling signal is provided for generating a rotor identification signal in accordance with the number of identifying detectable elements provided on the rotor.

Abstract: A locking ring having castellations is provided for a swinging bucket-type centrifuge. The locking ring is constructed such that the castellations can be angularly positioned relative to the rotor to either block or permit the buckets to swing outwardly during operation. The angular positioning of the castellations relative to the buckets is accomplished by relative angular acceleration and deceleration between the rotor and the locking ring.