Service Manuals, User Guides, Schematic Diagrams or docs for : Agilent journals 1958-04

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                                                             HEWLETT- PAC K ARD


                                        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



5UBLISHED BY THE HEWLETT-PACKARD COMPANY, 275 PAGE MILL ROAD, PALO ALTO, CALIFORNIA                                                                                               APRIL, 1958




                      A Precision Delayed-Pulse Generator
                For Measuring and Generating Short Time Intervals
         DELAYED-PULSE generators, i.e., genera                                     tervals formed by the three pulses are each
               tors that produce a pulse at a known and                             separately adjustable by calibrated panel con
         selectable time following a trigger signal, give                           trols over a range from 1 to 10,000 microsec
         the laboratory and production engineer an ex                               onds from time zero in digital steps of 1 micro
         cellent tool with which to measure and estab                               second and with continuous interpolation be
         lish accurate time intervals in the microsecond                            tween steps. The pulses have less than ±0.01
         to millisecond region. Checking radar, loran,                              microsecond jitter, and their time of occurrence
         DME and Tacan system range calibration,                                    is accurate within ±0.1 microsecond ±0.001 %
         measuring resolution of fast circuits, measur                              of the selected delay. Three plug-in type output
         ing or simulating fast gates, and measuring de                             circuits have also been designed to provide the
         lays in circuits and devices are typical of the                            pulses with optimum characteristics for a given
         measuring situations where such a generator                                application.
         is applicable.                                                                The generator is particularly distinguished
            The new digital delay generator shown in                                by the fact that it is a direct slave to the external
         Fig. 1 provides an initial time zero reference                             trigger, which can have a random rate, but at
         pulse and two positionable pulses (Fig. 2), all                            the same time generates selectable delays di
         of which are accurately known in time with                                 rectly from a crystal-controlled oscillator. The
         respect to an external trigger pulse. The two                              instrument can also trigger from an internal
         positionable pulses and thus the two time in                               rate circuit over a 10 cps to 10 kc range.




    P R I N T E D   I N   U . S . A .                                                                                     C O P Y R I G H T   1 9 5 8   H E W L E T T - P A C K A R D   C O .




                                                        

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