Service Manuals, User Guides, Schematic Diagrams or docs for : Agilent journals 1950-04

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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. 1 No. 8


6LISHED BY THE HEWLETT-PACKARD COMPANY, 395 PAGE MILL ROAD, PALO ALTO, CALIFORNIA                                                                                                     APRIL, 1950




       Direct Measurement of Impedance
            in the 50-500 MC Range
      THE frequency range from 50 to 500                                              measuring almost any of the devices and
           megacycles, being too high for accurate                                    components usually encountered in high-
      use of conventional bridges and too low for                                     frequency work. In addition, the impedance
      economical construction of slotted line                                         range of the bridge can be extended with
      equipment, has heretofore been a difficult                                      some reduction in accuracy by using a known
                                                                                      length of transmission line.
      region for measuring impedance.
                                                                                         The usefulness of this new bridge in the
         The new -hp- Model 803A Bridge1 meas
                                                                                      modern laboratory can hardly be over-em
      ures impedance with good accuracy over
                                                                                      phasized. Measurements of impedance of
      this 50-500 me range. Measurements can be                                       high-frequency components, connectors, ter
      made over the much wider range from ap                                          minations, antennas, amplifier input circuits,
      proximately 5 to 700 me with relaxed accu                                       and transmission lines are all possible with
      racy and reduced phase angle range. The                                         the -hp- 803A. The operation of the instru
      bridge reads directly in impedance magni                                        ment is so convenient that accurate measure
      tude over a range from 2 to 2000 ohms and                                       ments can ordinarily be made at the rate of
      is also calibrated in impedance phase angle                                     one per minute. In our laboratories, -hp- en
      at 100 me. Phase angles between 

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