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COMMITTED TO EXCELLENCE IN U TIL N MANUA Tektronix, Inc . P .O. Box 500 Beaverton, Oregon 97077 Serial Number,-.- 070-2320-00 First Printing APRIL 1979 (V . 101 ; . : "IlLhoM me written permission of Tektronix, in and man- I i I dt K5()I I eK(!Uf I I X . k I y), lektronix U.K . Lir, -,ited . Ilic!ii w ~1 . ;-,.A. S! ,Hcification and price change Nriviiuyes are reserved . 7A29 Instruction PAGE PAGE LIST OF ILLUSTRATIONS . . . . . . . . . . . . . . . . . . . . ... .. . .. . . . . . . iii SECTION 3 THEORY OF OPERATION LIST OF TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . . . . . iii BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... .. . . 3-1 OPERATORS SAFETY SUMMARY . . . . . . . . . . . . ... .. . .. . . . . . . iv DETAILED CIRCUIT OPERATION . . . . . . . . . . . . . . . . ... .. . . 3-1 SERVICE SAFETY SUMMARY . . . . . . . . . . . . . . . . ... .. . .. . . . . . . .v INPUT SWITCHING AND READOUT . . . . . . . . . . ... .. . . 3-3 DELAY LINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... .. . . 3-3 AC-OFF-DC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... .. . . 3-3 SECTION 1 GENERAL INFORMATION INPUT ATTENUATORS . . . . . . . . . . . . . . . . . . . ... .. . . 3-3 INTRODUCTION . . . . . . . . . . . . . . . . . . .. . ... ... .. . .. . 1-1