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signal generator

A signal generation device and signal technology, applied in the direction of measuring devices, digital function generators, instruments, etc., can solve the problems of prolonged triggering of signal generation devices and test scenarios that cannot apply instantaneous response, etc., and achieve the effect of low trigger delay

Active Publication Date: 2022-07-01
ZHONGXING LIANHUA TECH BEIJING CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The present invention provides a signal generating device, which is used to solve the defect that the signal generating device in the prior art has a long trigger delay and cannot be applied to the test scene of instantaneous response, and realizes the low Trigger delay signal generator

Method used

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Embodiment Construction

[0041] figure 1 It is a schematic diagram of the implementation of the external trigger function in the prior art provided by the present invention, such as figure 1 As shown, the waveform storage medium stores the waveform sequence, the waveform sequence table stores the waveform sequence parameters, and the external trigger control unit receives the external trigger signal. First, after receiving the external trigger signal, the external trigger control unit reads the waveform sequence from the waveform sequence storage medium according to the waveform sequence parameters in the waveform sequence table; then, performs gain control, offset control and Flatness compensation and other processing; finally, use a digital to analog converter (DAC) to convert the processed waveform sequence from a digital signal to an analog signal.

[0042] figure 2 is a schematic diagram of the definition of trigger delay in the prior art provided by the present invention, such as figure 2 A...

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Abstract

The present invention provides a signal generating device, which comprises: a first-level cache and a control unit, a second-level cache and a control unit, and a digital-to-analog conversion unit; The first input end is connected; the first-level cache and the control unit are used for buffering, reading and waveform transformation processing of the waveform sequence; the second-level cache and the second input end of the control unit are used for receiving external trigger signals; the second-level cache and control The output end of the unit is connected with the input end of the digital-to-analog conversion unit; the second-level cache and the control unit are used to buffer the processed waveform sequence, and read the processed waveform sequence according to the external trigger signal; the digital-to-analog conversion unit is used for Convert waveform sequences from digital to analog. The invention adopts cascading buffer control and puts the external trigger control logic behind, which eliminates the influence of the previous stage time on the trigger delay, realizes the low trigger delay, and can be applied in the test scene of instantaneous response.

Description

technical field [0001] The invention relates to the technical field of testing and measurement, and in particular, to a signal generating device. Background technique [0002] A signal generator, also known as a signal source, is a device that can provide electrical signals of various frequencies, waveforms and output levels. The signal generator is used as a signal source or excitation source for testing when measuring the amplitude characteristics, frequency characteristics, transmission characteristics and other electrical parameters of various telecommunication systems or telecommunication equipment, as well as when measuring the characteristics and parameters of components. [0003] At present, for signal generating devices, there are mainly analog radio frequency sources that use frequency synthesizers to generate radio frequency signals, baseband signal generating devices based on the principle of Direct Digital Synthesizer (DDS), and arbitrarily switchable multi-func...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R1/28G06F1/03
CPCG01R1/28G06F1/0321
Inventor 程军强
Owner ZHONGXING LIANHUA TECH BEIJING CO LTD
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