This standard specifies the test method for the frequency characteristic curve of the transmitting tube. This standard is applicable to the test of the frequency characteristic curve of the space charge controlled oscillation and power amplifier tube with anode dissipation power above 25W and frequency below 1000MHz. GB/T 3789.19-1991 Test method for the electrical performance of transmitting tubes Test method for frequency characteristic curve GB/T3789.19-1991 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Test methods of electrical properties of transmitting tubes
Test methods of frequency characteristic curve
Measurements af the ekectrical properties of transmitting tubesMeasurdng methods of frequency characteristic curveSubject content and scope of application
This standard specifies the test methods of frequency characteristic curve of transmitting tubes. GB/T 3789. 19-91
Replaces GB 3789. 19-83
This standard is applicable to the test of frequency characteristic curve of space charge controlled oscillator and power amplifier tubes with anode power consumption of more than 25W and frequency below 1000MHz. wwW.bzxz.Net
2. References
GB/T 3789.1 Test methods of electrical properties of transmitting tubesGeneral 3 Terminology
Frequency characteristic curvefrequency characteristic curveThe frequency characteristic curve is the relationship curve between the load power of the electron tube and the input power of the electron anode power supply and the oscillation frequency. 4 Test equipment and test rules
The test equipment and test rules shall comply with the provisions of GB/T3789,1. 5 Test method
5.1 The test work shall be carried out on the equipment for testing output power. 5.2 Keep the voltage of each pole at the specified value and adjust the oscillation system of the test equipment to the lowest frequency within the frequency range. 5.3 Select the oscillation system with the best equivalent impedance, adjust the excitation voltage and gate bias, etc. to obtain the maximum load power. 5.4 Adjust the oscillation system, gradually increase the test rate, maintain or reduce the anode and second grid voltages, and then adjust the resonant system to obtain the maximum load power at the test frequency. This measurement is carried out at least at more than 4 frequency points, including working at the extreme frequency points. Additional notes:
This standard was proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard was drafted by the Electronic Standardization Institute of the Ministry of Machinery and Electronics Industry and Factory 779. Approved by the State Bureau of Technical Supervision on August 15, 1991 and implemented on April 1, 1992
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