1. Introduced group delay measurement methods and techniques with phase meter.

2. A specific phase meter module is used to control the phase continuation of modulated signals in the new MSK modulator.

3. Development process of the wide-band intermediate frequency phase meter is introduced completely in this paper.

4. The principle of the phase meter and it's block dia - gram are presented.

5. And introduce a key design of high precision and width frequency area of phase meter.

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6. In this article the design and the realization of virtual phase meter based on.

7. After function test and practical operation, it is confirmed that the YPH phase meter is highly reliable, stable in performance, easy in use, and low in power dissipation.

8. It is introduced that a design idea and method which is applied to portable three-phase multifunctional volt-ampere phase meter based on high-powered DSP TMS320LF2407A.

9. The designs of every component and the performance figures of the phase meter are illustrated.

10. In the electronic instrumentation aspect, the phase-locked loop in instruments and so on in frequency synthesizer and phase meter played the vital role.

11. So it is very significant to develop a high precision frequency and phase meter.