Xi'an SYNC

Product overview

SYN4213 The analog phase-locked module with low phase noise and high stability is realized by high precision frequency discrimination and phase detection technology to realize the phase locking of the constant temperature crystal oscillator to the external input reference signal, ensuring that the phase and frequency of the output signal are highly correlated with the input reference signal, and improving the short term stability and the phase noise index of the input signal.The phase-locked module is usually used in conjunction with rubidium clock, cesium clock or hydrogen clock. It can greatly improve the stability and phase noise index of the atomic clock, and output the long stability of the atomic clock signal at the first level, so as to achieve the purpose of optimization for long stability and short stability.

The working principle of the phase-locked module: the phase-locked module consists of a precise frequency discriminator, a high precision constant temperature crystal oscillator 0CXO, a high precision DA, a CPU control part, a multi-channel low phase noise amplification module and a low ripple voltage regulator module.When the external reference input 10MHz signal first enters the frequency discriminator, the 10MHz of the constant temperature crystal oscillator is allocated and amplified, and one of them is sent to another port of the phase discriminator. The two signals are detected by phase detection, and a signal which is highly consistent with the phase difference is output. Through the CPU acquisition and analysis, the corresponding instructions are sent to the DA module to control the voltage control terminal of the constant temperature crystal oscillator to realize the adjustment of frequency and phase, so as to realize the whole phase locking function of the analog phase locked loop.

Key word Analog phase-locked loop, phase-locked module, phase-locked crystal oscillator

Product function

1) Improve the reference signal's short stability and phase noise.

2) One Standard 10MHz sinusoidal signal input;

3) Three Standard 10MHz sinusoidal signal output;

Product characteristics

A) Analog phase-locked technology;

B) High short and stable, low phase noise.

C) Industrial design has high reliability.

D) Multiplex and amplifying output 10MHz;

Typical application

1) Scientific research institutes, precision measurement, etc.

Technical index