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A Digital Arbitrary Waveform Generator

An arbitrary waveform and waveform generation technology, applied in the direction of digital function generator, electric pulse generator circuit, etc., can solve the problems of unable to realize real-time hardware waveform generation and real-time hardware waveform modulation, unable to generate arbitrary waveform, unable to meet actual needs, etc. , to achieve the effects of friendly man-machine interface, high-speed real-time hardware waveform generation and modulation, and high reliability

Active Publication Date: 2016-04-27
QINGDAO HANTEK ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing analog and digital waveform generators generally can only generate limited waveforms, and cannot generate arbitrary waveforms, which cannot meet actual needs
Even digital waveform generators that can generate arbitrary waveforms need to be calculated in advance and stored in a limited storage area with limited storage depth, which cannot realize real-time hardware waveform generation and real-time hardware waveform modulation

Method used

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  • A Digital Arbitrary Waveform Generator
  • A Digital Arbitrary Waveform Generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment l

[0023] Such as figure 1 As shown, a digital arbitrary waveform generator includes a user control interface, an MCU control circuit, a waveform generation and storage module, two analog amplification and filtering modules, and a power supply module that supplies power to the entire waveform generator. The user control interface is installed on an ordinary On the PC, the PC and the MCU control circuit communicate serially through the USB interface; the MCU control circuit is connected to the waveform generation and storage module through a photoelectric isolator, and the input terminal of the analog amplification and filtering module is connected to the MCU control circuit.

[0024] The waveform generation and storage module includes FPGA real-time waveform generation circuit connected in sequence, DDR2 memory and LVDS level interface DAC circuit. Large-capacity DDR2 is used as the main memory, which can store arbitrary waveforms with a depth of 4Gbit. Through calculation and set...

Embodiment 2

[0028] Such as figure 2 As shown, a digital arbitrary waveform generator includes an external modulation signal conditioning module, a user control interface, an MCU control circuit, a waveform generation and storage module, two analog amplification and filtering modules, and a power supply module for supplying power to the entire waveform generator. The user control interface is installed on an ordinary PC, and the PC communicates with the MCU control circuit through a USB serial interface, and the MCU control circuit is connected with the waveform generation and storage module, and the analog amplification and filter module The input terminal is connected with the MCU control circuit.

[0029] The external modulation signal conditioning module includes an analog signal conditioning circuit, an automatic range acquisition circuit and an ADC acquisition module connected in sequence. The modulation uses a bipolar wide-range input, and through automatic range control, changes ...

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Abstract

The invention discloses a digital arbitrary waveform generator which comprises a user control interface installed on an ordinary PC (personal computer), an MCU (micro controller unit) control circuit, a waveform generation and storage module, at least one analog amplifying and filter module, a power module for supplying power for the whole waveform generator, and an external modulation signal conditioning module, wherein an external modulation signal passes by the conditioning module to form a digital signal, the waveform generation and storage module generates digital arbitrary waveforms and modulation waveforms, analog waveforms are restored by the analog amplifying and filter module, the MCU control circuit controls the generation and triggering of the waveforms, and man-machine interaction is realized by an LCD (liquid crystal display) display module and a key knob. By adopting the digital arbitrary waveform generator, high-speed real-time hardware waveform generation and modulation are realized, a more friendly man-machine interface is realized, richer functions are provided, and higher reliability and good waveform parameters are obtained.

Description

technical field [0001] The invention relates to the field of signal generators, in particular to a digital arbitrary waveform generator. Background technique [0002] A waveform generator is an electronic measuring instrument used to generate the voltage and current waveforms required for circuit testing. It is used in debugging, analyzing, and judging circuit faults. Arbitrary waveform generator is an electronic instrument that can generate a large number of standard signals and user-defined signals, and guarantees high precision, high stability, repeatability and easy operation. [0003] Existing analog and digital waveform generators generally can only generate limited waveforms, and cannot generate arbitrary waveforms, which cannot meet actual needs. Even a digital waveform generator that can generate arbitrary waveforms needs to be calculated in advance and stored in a limited storage area with a limited storage depth, which cannot realize real-time hardware waveform g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K3/02G06F1/02
Inventor 郝春华
Owner QINGDAO HANTEK ELECTRONICS