Agilent 1957-02 free download

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HEWLETT-PACKARD JOURNAL TECHNICAL INFORMATION FROM THE -dp- LABORATORIES ^H Vol. 8 No. 6 5LISHED BY THE HEWLETT-PACKARD COMPANY, 275 PAGE MILL ROAD, PALO ALTO, CALIFORNIA FEBRUARY, 1957 A New 8-12 KMC Voltage -Tuned Sweep Oscillator For Faster Microwave Evaluations ONE of the tools that has been needed in advantage of being voltage tuned. Use of this the microwave region has been a flexible tube also permits the instrument to be capable sweep oscillator. In addition to conventional of both amplitude and frequency modulation. uses, such an oscillator, when combined with These modulation capabilities further make the proper external components, has special the instrument suitable for forming into a value in the microwave region in that it per general-purpose swept or non-swept signal mits rapid wide-range evaluations to be made generator by use of an external calibrated at not only of reflection but of gain, attenuation, tenuator. and other network transfer characteristics as The flexibility of the new oscillator is in well. dicated in detail by the controls provided on The new -hp- 8.2 - 12.4 kmc sweep oscillator the panel (Fig. 1). The main frequency dial shown in Fig. 1 has been designed for such ap is a large six-inch dial which is accurate within plications and to that end provides any amount a few percent. An 8: 1 rim drive vernier is pro of sweep width up to 4.2 kmc at a wide range vided for fine frequency adjustment. of sweep rates. A special feature of the sweep The sweep controls are located at the upper is that it is linear over the entire 8.2 - 12.4 kmc right of the panel. The upper control adjusts band. Output power is relatively high