The Series E-300 Sine-Square Wave Signal Generator was especially developed to answer many MODERN ELECTRONIC AMPLIFIER CIRCUIT TESTING PROBLEMS WHICH CANNOT BE HANDLED WITH JUST A ROUTINE COMPLEMENT OF TEST INSTRUMENTS. Specially note the "Performance Testing'' requirements for High Fidelity Audio System, TV Video Amplifiers and other wide bano oevices1. An up-to-date Test Equipment installation can no longer be considered complete, for comprehensive use, until an instrument such as the Series E-3OO has been acquired. For those who may not be familiar with Sine and Square Wave testing techniques, a portion of this manual has been especially prepared. A foundation is established as will permit the operator to interpret oscillographic waveforms in terms of Frequency Response, Distortion, etc. Practical experience in the use of Sine and Square Waves will develop recognition of moresustle differences in waveform indications versus circuit conditions. It will be found that certain circuits can apparently tolerate sizeable degree of distortion and DEPARTURE FROM "FLATNESS", - - - WHEREAS SUCH MAY NOT BE THE CASE FOR OTHER AND MORE CRITICAL TYPES OF CIRCUITS. IT IS THEREFORE ESSENTIAL THAT ONE BECOHE FAMILIAR WITH WHAT IS TO BE EXPECTED OF THE AMPLIFIER OR EQUIPMENT UNDER TEST BEFORE WAVEFORM ANALYSIS IS STARTED. THE BASIS OF COMPARISON IS USUALLY THE MANUFACTURER'S SPECIFICATIONS OR THE OPERATOR'S OWN EXPERIENCE WITH THE PARTICULAR AMPLIFIER WHOSE PERFORMANCE IS TO BE ANALYZED ANo/oR ADJUSTED. Appropriately applied, the Series E-300 Sine-Square Wave Signal Generator will afford considerable STREAMLINING OF AMPLIFIER TEST PROCEDURES WITH RESULTANT SAVINGS IN TIME AND EFFORT - - - AND WITH MORE UNIFORMLY HIGH STANDARDS OF APPARATUS PERFORMANCE.