Open AccessResearch and Application of Remote Control Test Method of Amplifier Indicators
Author(s) -
Liaoyuemin,
Liaohaiqian
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2141/1/012012
Subject(s) - amplifier , traverse , power (physics) , computer science , test (biology) , harmonic , point (geometry) , computer hardware , electronic engineering , engineering , telecommunications , bandwidth (computing) , paleontology , physics , geometry , mathematics , geodesy , quantum mechanics , biology , geography
As we all know, there are many test indicators for amplifiers, including saturated output power, 1dB compressed output power (P -1 ), harmonic suppression, etc. The saturated output power and 1dB compressed output power are tested step by step, and the harmonic suppression needs to traverse every frequency point to calculate the results, which require testers to pay more time and effort. When there are batches of power amplifiers to be tested, manual testing methods are unrealistic. In order to simplify the test steps, reduce the input of testers, and speed up the test progress, this article introduces a test method about instrument remote control, based on GPIB and C# after the study and research for the GPIB bus of the GPIB instrument. This method calls the VISA library to drive the GPIB card to communicate with the test instrument by SCPI programmable instrument standard commands and the respective remote control commands of each instrument to perform mixed programming with C#. Finally, we can complete the measurement, display and get the data by controlling the GPIB instruments on the PC side.