Digital calculation of network impedances

THE OPERATION of an electrical network may be defined by means of driving-point and transfer impedances. According to the American Standard Definitions of Electrical Terms, the driving-point impedance at any pair of terminals of a network is the ratio of an applied potential difference to the resultant current at these terminals, all terminals being terminated in any specified manner. Similarly, the transfer impedance between any two pairs of terminals of a network is the ratio of a potential difference applied at one pair of terminals to the resultant current at the other pair of terminals, all terminals being terminated in any specified manner.