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HEWLETT-PACKARD

JOURNAL
T E C H N I C A L I N F O R M A T I O N F R O M T H E - h p - L A B O R A T O R I E S Vol. 7 No. 3

'UBLISHED BY THE HEWLETT-PACKARD COMPANY, 275 PAGE MILL ROAD, PALO ALTO, CALIFORNIA NOVEMBER, 1955

Square Wave and Pulse Testing
of Linear Systems
A>J arbitrary input wave, when transmitted ber of sinusoids, the output from a linear sys
through even an ideally linear system, can tem will consist of these same sinusoids modi
be altered in a number of ways. Such a wave fied only in amplitude and phase. Each will be
can be altered, for example, in size, shape, and transmitted by the system as if it alone were
time of occurrence. There is, however, one class present (superposition). The simple sum of the
of waves or functions