Automatic testing system of temperature compensating crystal oscillator

An automatic test system, crystal oscillator technology, applied in electronic circuit testing, instruments, measuring electricity, etc., can solve problems such as low test efficiency, unsatisfactory accuracy, and low production efficiency

Active Publication Date: 2009-12-23
GUANGDONG DAPU TELECOM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the existing digital compensation methods usually adopt a one-by-one compensation method, which requires a lot of time and manpower, and the production efficiency is extremely low
However, only a small number of crystal oscillator manufacturers in China have their own temperature-com

Method used

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  • Automatic testing system of temperature compensating crystal oscillator
  • Automatic testing system of temperature compensating crystal oscillator
  • Automatic testing system of temperature compensating crystal oscillator

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Embodiment Construction

[0022] Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements. As above, please refer to figure 1 The automatic test system 100 of the temperature compensated crystal oscillator of the present invention includes a power supply 1, a temperature box 5, a data transmission module 3, a central control module 2 and a crystal oscillator gating module 4, and the power supply 1 supplies the temperature box 5, the The data transmission module 3 and the central control module 2 supply power, the incubator 5 houses a plurality of crystal oscillators 410 to be tested, and the central control module 2 controls the temperature of the incubator 5 . Among them, please refer to figure 2 and image 3 , the central control module 2 includes a computer 22, a frequency standard 20, a frequency meter 21 and a temperature control unit 23, and the frequency meter 21 is electrically connected to the frequen...

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Abstract

The invention discloses an automatic testing system of a temperature compensating crystal oscillator, comprising a power supply, an incubator, a data transmission module, a plurality of crystal oscillating gate modules, a display module and a center control module, wherein the crystal oscillating gate modules comprise a plurality of testing control boards, a plurality of groups of decoders and a plurality of switches, wherein the testing control boards are arranged in the incubator; each testing control board is provided with a plurality of crystal oscillators to be tested; the center controlmodule comprises a computer, a frequency scale, a frequency meter and a temperature control unit, wherein the frequency meter is respectively and electrically connected with the frequency scale and the computer and provided with an interface connected with the crystal oscillators to be tested; and the computer is electrically connected with the crystal oscillators to be tested respectively through the crystal oscillating gate modules and the data transmission module and is also electrically connected with the incubator through the temperature control unit. The invention can test and compensate the crystal oscillator in large scale and high efficiency.

Description

technical field [0001] The present invention relates to crystal oscillators, and more particularly to an automatic test system for temperature-compensated crystal oscillators. Background technique [0002] With the development of society, crystal oscillators have become an essential part of the electronic communication industry due to their high frequency stability. However, the output frequency of the crystal oscillator is not absolutely stable, it will change with the change of temperature, and the change is more random and the consistency is poor, so the introduction of compensation has become a means to increase the frequency stability of the voltage-controlled crystal oscillator. [0003] At present, the most commonly used is to add a temperature compensation resistor network to the front end of the crystal oscillator, which is an analog compensation method. The frequency of the crystal oscillator is controlled by the output voltage of the compensation network. Using th...

Claims

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Application Information

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IPC IPC(8): G01R31/28G01R31/01
Inventor 刘朝胜
Owner GUANGDONG DAPU TELECOM TECH CO LTD
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