Portable double-amplitude shifted signal generator

Abstract

The invention belongs to the field of electronic technology test, in particular to a portable double-amplitude shifted signal generator with double-amplitude shifting. The portable double-amplitude shifted signal generator comprises a serial port communication module, a core processing module, a keyboard input and screen display module, an output signal generating and amplifying module, a shifted signal generating and amplifying module and a power supply transformation module and further comprises a two-way serial port communication channel. The power supply input of the portable double-amplitude shifted signal generator is 12V direct-current power supply, and both a power supply adapter and a battery can be used for supplying power; the portable double-amplitude shifted signal generator is capable of meeting various working conditions, light and convenient to carry. The portable double-amplitude shifted signal generator has an on-line mode, output signals can be controlled through an upper computer, and digital coding for the output signals can be realized; the portable double-amplitude shifted signal generator has a firmware upgrading function, and the system function can be upgraded without changing the system hardware.

Description

technical field [0001] The invention belongs to the field of electronic technology testing, and specifically relates to a portable full-amplitude offset signal generator with full-amplitude offset. Background technique [0002] The signal generator is an important testing instrument in the field of electronic technology. It is mainly used to provide the required signals for various testing tasks of the electronic system. Now there are various high, middle and low-end signal generating instruments, but the portable signal generator It is relatively rare; at the same time, the power supply of the instrument basically adopts a general-purpose AC power supply, which is difficult to meet the needs of field testing; at the same time, the cost of existing signal generators is generally high, and the cost performance is low. The price of low-end laboratory signal generators All are over a thousand dollars. [0003] Existing signal generators provide offset setting function, but the...

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Problems solved by technology

[0002] The signal generator is an important testing instrument in the field of electronic technology. It is mainly used to provide the required signals for various testing tasks of the electronic system. Now there are various high, middle and low-end signal generating instruments, but the portable signal generator It is relatively rare; at the same time, the power supply of the instrument basically adopts a general-purpose AC power supply, which is difficult to meet the needs of field testing; at the same time, the cost of existing signal generators is generally high, and the cost performance is low. The price of low-end laboratory signal generators all over a thousand yuan

[0003] Existing signal generators provide offset setting function, but the offset amplitude is not large enough, generally 50% of the maximum output amplitude, such as the commonly used Puyuan DG1022U signal generator, the output voltage is 0-20VPP , the offset value is ±5V or ±10V, the price of the whole machine is between 1500-1800

However, in some special test environments, the offset value of the signal needs to be large and accurately adjustable, which is a shortcoming of the existing signal generator

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