Agilent 1956-05 free download

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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. 9-10 PUBLISHED BY THE HEWLETT-PACKARD COMPANY, 275 PAGE MILL ROAD, PALO ALTO, CALIFORNIA MAY-JUNE, 1956 A New 10-15.5 KMC 10 MW Signal Generator THE new -hp- Model 626A SHF Signal Gen frequency dial accurate within 1%, a direct- erator operates over the range from 10 to reading attenuator with a 100 db range, and 15.5 kilomegacycles and provides a high out a flexible modulator that provides internal put of many milliwatts over this range. Al square-wave, pulse or f-m modulation of the though the generator is rated as providing a output signal. The new generator has been de maximum of at least 10 mil veloped as a companion to the recently-devel SEE ALSO liwatts over the whole oped -hp- 15-21 kmc generator'. "Simple Regulated Power Supply", p. 3 range, it usually provides Fig. 2 shows the generator's circuit arrange "Obtaining Balanced Square Waves", p. 4 more than 15 milliwatts at ment. The oscillator klystron operates with an all frequencies and over external resonator which is tuned with a non- most of the range the output is in the 30- milli contacting type plunger. Oscillator tube life watt or higher region. The generator is thus is thus unrelated to the number of times the valuable as a signal source for rough test work instrument is tuned through its frequency as well as for reflectometer, slotted line, and re range. Repeller voltage is automatically ceiver applications. tracked with the frequency dial so that no re- In addition to its relatively high maximum peller voltage adjustments are required. power output, the generator has the other fea The path from the klystron to the output tures that make any signal generator conven terminals is all contained in wave