Title:
【発明の名称】ディジタル同期掃引方法
Document Type and Number:
Japanese Patent JP3148225
Kind Code:
B2
Abstract:
A swept synthesizer signal source provides a digital synchronization signal for accurate internal synchronization of events and for external synchronization of data taking and other operations to predetermined frequencies generated by an oscillator during a sweep. The digital synchronization signal includes a predetermined number of digital pulses, regardless of the sweep time. A ramp voltage which controls the oscillator is corrected during a calibration period to sweep between predetermined limits, thereby insuring that the ramp voltage is synchronized to the digital synchronization signal. The slope of the frequency versus time sweep is also corrected to further improve accuracy. A power level correction technique insures precision power leveling regardless of the sweep range. A table of correction/frequency pairs is entered into the instrument, and an interpolation algorithm is employed to determine corrections at frequencies corresponding to each synchronization pulse. The source can be used in a network analyzer system wherein the synchronization pulses are provided to a receiver to trigger data taking. Two or more sources can be interconnected to provide synchronized sweeps.
Inventors:
Mikele Jay Sabel
Douglas E Flumer
Roger Day Shepherd
James E. Bossaller
Glen M Baker
Douglas E Flumer
Roger Day Shepherd
James E. Bossaller
Glen M Baker
Application Number:
JP26034990A
Publication Date:
March 19, 2001
Filing Date:
September 28, 1990
Export Citation:
Assignee:
AGILENT TECHNOLOGIES, INC.
International Classes:
G01R27/28; G01R23/173; G01R31/28; H03B23/00; H03L7/00; H03B1/00; H03B19/00; H03C3/09; (IPC1-7): G01R31/28; H03B23/00
Domestic Patent References:
| JP60111109U |
Other References:
【文献】米国特許4603305(US,A)
Attorney, Agent or Firm:
Kaoru Furuya (2 outside)