Abstract: The microwave pulse generator of the invention for generating microwave pulses with a pulse duration in the nanosecond range has a pulse generator that generates pulses of constant width, and a microwave resonant circuit for generating microwave oscillations. Additionally provided is a pulse-shortening stage, to which the pulses from the pulse generator are fed and which generates output pulses in the nanosecond range. The output pulses are fed as supply voltage pulses to a microwave oscillator, at the output of which the microwave pulses can be picked off. A voltage-controlled varicap diode arrangement is provided to influence the pulse lengths and/or pulse amplitudes.

Abstract: The microwave pulse generator of the invention for generating microwave pulses with a pulse duration in the nanosecond range has a pulse generator that generates pulses of constant width, and a microwave resonant circuit for generating microwave oscillations. Additionally provided is a pulse-shortening stage, to which the pulses from the pulse generator are fed and which generates output pulses in the nanosecond range. The output pulses are fed as supply voltage pulses to a microwave oscillator, at the output of which the microwave pulses can be picked off. A voltage-controlled varicap diode arrangement is provided to influence the pulse lengths and/or pulse amplitudes.

Abstract: The invention relates to a method and an electronic measuring device for detecting a process variable connectable to a two-wire line (101) for providing the supply energy and for digital communication with a process control, and a method for operating such a measuring device. An inventive measuring device comprises a sensor means (114, 115, 123, 124; 314, 315, 323, 324) for measuring the process variable, a controlling device (117; 317) for controlling components of the measuring device, a voltage measuring device (116; 316) for measuring the supply voltage applied through the two-wire line (101), and a current control unit (122; 322) by means of which the current for supplying the measuring devices can be modified in a temporally appropriate manner as a function of the supply voltage measured by the voltage measuring device (9; 316).

Abstract: In order to simplify display and modification of parameters of a measuring device and make them uniform for different measuring devices, it is proposed to transfer from a memory on the measuring device to the operating unit, in addition to parameter values, representational data that defines the presentation of the parameter values on operating unit (5). An Internet browser, a word-processing program or a spreadsheet program is used at operating unit (5) to display and optionally modify the parameter values; the representational data is stored in the measuring device in a file with a format adapted to the program used.