Service Manuals, User Guides, Schematic Diagrams or docs for : Agilent journals 1961-01

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1961-01


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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 l             (ORATORIES
                                                                                                                                                                          Vol. 12, No. 5

BUSHED CALIFORNIA THE HEWLETT-PACKARD COMPANY, 1501 PAGE MILL ROAD, PALO ALTO, CALIFORNIA                                                                            JANUARY, 1961




                          A New Frequency Counter Plug-In Unit
                       for Direct Frequency Measurements to 510 MC
         ONE of the significant steps in extending                                       because the action of the converter is to
                 the usefulness of the high-speed fre                                    subtract a selected, known harmonic of the
         quency counter was the development of the                                       counter's precision time base frequency from
         plug-in frequency converter. This convert                                       the frequency being measured, leaving a
         er enabled the accuracy, speed, and conven                                      difference frequency in the range from 0 to
                                     ience of the basic 10-                              10 megacycles to be measured by the counter
                  SEE AtSO:
          New microwave              megacycle counter to                                itself.
            frequency doubters, p. 3
                                     be extended by several                                 Despite the increase in the operating fre
         decades. Now, an additional converter has                                       quency range, the new converter's operation
         been developed that enables frequency                                           is even simpler than previous converters.
         measurements to be made from 100 mega                                           To measure a frequency with the new unit,
         cycles to above 500 megacycles. Like the                                        it is only necessary to tune one control until
         other converters, the new unit enables these                                    a reading is obtained on the panel meter.
         measurements to be made with the full accu                                      



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